Adds Proton C Conversion (#4661)

* adds proton c base

* fixes custom matrix include

* adds readme.md

* initial proton coversion, no pin mapping

* start of mcu selection

* add pin mapping and sweet16 test

* add at90 to list

* disable backlight, fix d7

* update flag names

* doc updates

* proton c update for mcu selection

4 files changed, 1325 insertions, 0 deletions

diff --git a/drivers/boards/GENERIC_STM32_F303XC/board.c b/drivers/boards/GENERIC_STM32_F303XC/board.c
new file mode 100644
index 000000000..4331155df
--- /dev/null
+++ b/drivers/boards/GENERIC_STM32_F303XC/board.c
@@ -0,0 +1,126 @@
+/*
+    ChibiOS - Copyright (C) 2006..2016 Giovanni Di Sirio
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+#include "hal.h"
+
+#if HAL_USE_PAL || defined(__DOXYGEN__)
+/**
+ * @brief   PAL setup.
+ * @details Digital I/O ports static configuration as defined in @p board.h.
+ *          This variable is used by the HAL when initializing the PAL driver.
+ */
+const PALConfig pal_default_config = {
+#if STM32_HAS_GPIOA
+  {VAL_GPIOA_MODER, VAL_GPIOA_OTYPER, VAL_GPIOA_OSPEEDR, VAL_GPIOA_PUPDR,
+   VAL_GPIOA_ODR,   VAL_GPIOA_AFRL,   VAL_GPIOA_AFRH},
+#endif
+#if STM32_HAS_GPIOB
+  {VAL_GPIOB_MODER, VAL_GPIOB_OTYPER, VAL_GPIOB_OSPEEDR, VAL_GPIOB_PUPDR,
+   VAL_GPIOB_ODR,   VAL_GPIOB_AFRL,   VAL_GPIOB_AFRH},
+#endif
+#if STM32_HAS_GPIOC
+  {VAL_GPIOC_MODER, VAL_GPIOC_OTYPER, VAL_GPIOC_OSPEEDR, VAL_GPIOC_PUPDR,
+   VAL_GPIOC_ODR,   VAL_GPIOC_AFRL,   VAL_GPIOC_AFRH},
+#endif
+#if STM32_HAS_GPIOD
+  {VAL_GPIOD_MODER, VAL_GPIOD_OTYPER, VAL_GPIOD_OSPEEDR, VAL_GPIOD_PUPDR,
+   VAL_GPIOD_ODR,   VAL_GPIOD_AFRL,   VAL_GPIOD_AFRH},
+#endif
+#if STM32_HAS_GPIOE
+  {VAL_GPIOE_MODER, VAL_GPIOE_OTYPER, VAL_GPIOE_OSPEEDR, VAL_GPIOE_PUPDR,
+   VAL_GPIOE_ODR,   VAL_GPIOE_AFRL,   VAL_GPIOE_AFRH},
+#endif
+#if STM32_HAS_GPIOF
+  {VAL_GPIOF_MODER, VAL_GPIOF_OTYPER, VAL_GPIOF_OSPEEDR, VAL_GPIOF_PUPDR,
+   VAL_GPIOF_ODR,   VAL_GPIOF_AFRL,   VAL_GPIOF_AFRH},
+#endif
+#if STM32_HAS_GPIOG
+  {VAL_GPIOG_MODER, VAL_GPIOG_OTYPER, VAL_GPIOG_OSPEEDR, VAL_GPIOG_PUPDR,
+   VAL_GPIOG_ODR,   VAL_GPIOG_AFRL,   VAL_GPIOG_AFRH},
+#endif
+#if STM32_HAS_GPIOH
+  {VAL_GPIOH_MODER, VAL_GPIOH_OTYPER, VAL_GPIOH_OSPEEDR, VAL_GPIOH_PUPDR,
+   VAL_GPIOH_ODR,   VAL_GPIOH_AFRL,   VAL_GPIOH_AFRH},
+#endif
+#if STM32_HAS_GPIOI
+  {VAL_GPIOI_MODER, VAL_GPIOI_OTYPER, VAL_GPIOI_OSPEEDR, VAL_GPIOI_PUPDR,
+   VAL_GPIOI_ODR,   VAL_GPIOI_AFRL,   VAL_GPIOI_AFRH}
+#endif
+};
+#endif
+
+void enter_bootloader_mode_if_requested(void);
+
+/**
+ * @brief   Early initialization code.
+ * @details This initialization must be performed just after stack setup
+ *          and before any other initialization.
+ */
+void __early_init(void) {
+  enter_bootloader_mode_if_requested();
+  stm32_clock_init();
+}
+
+#if HAL_USE_SDC || defined(__DOXYGEN__)
+/**
+ * @brief   SDC card detection.
+ */
+bool sdc_lld_is_card_inserted(SDCDriver *sdcp) {
+
+  (void)sdcp;
+  /* TODO: Fill the implementation.*/
+  return true;
+}
+
+/**
+ * @brief   SDC card write protection detection.
+ */
+bool sdc_lld_is_write_protected(SDCDriver *sdcp) {
+
+  (void)sdcp;
+  /* TODO: Fill the implementation.*/
+  return false;
+}
+#endif /* HAL_USE_SDC */
+
+#if HAL_USE_MMC_SPI || defined(__DOXYGEN__)
+/**
+ * @brief   MMC_SPI card detection.
+ */
+bool mmc_lld_is_card_inserted(MMCDriver *mmcp) {
+
+  (void)mmcp;
+  /* TODO: Fill the implementation.*/
+  return true;
+}
+
+/**
+ * @brief   MMC_SPI card write protection detection.
+ */
+bool mmc_lld_is_write_protected(MMCDriver *mmcp) {
+
+  (void)mmcp;
+  /* TODO: Fill the implementation.*/
+  return false;
+}
+#endif
+
+/**
+ * @brief   Board-specific initialization code.
+ * @todo    Add your board-specific code, if any.
+ */
+void boardInit(void) {
+}
diff --git a/drivers/boards/GENERIC_STM32_F303XC/board.h b/drivers/boards/GENERIC_STM32_F303XC/board.h
new file mode 100644
index 000000000..11120dfd7
--- /dev/null
+++ b/drivers/boards/GENERIC_STM32_F303XC/board.h
@@ -0,0 +1,1187 @@
+/*
+    ChibiOS - Copyright (C) 2006..2016 Giovanni Di Sirio
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+#ifndef _BOARD_H_
+#define _BOARD_H_
+
+/*
+ * Setup for Generic STM32_F303 Board
+ */
+
+/*
+ * Board identifier.
+ */
+#define BOARD_GENERIC_STM32_F303XC
+#define BOARD_NAME                  "STM32_F303"
+
+/*
+ * Board oscillators-related settings.
+ * NOTE: LSE not fitted.
+ */
+#if !defined(STM32_LSECLK)
+#define STM32_LSECLK                0U
+#endif
+
+#define STM32_LSEDRV                (3U << 3U)
+
+#if !defined(STM32_HSECLK)
+#define STM32_HSECLK                8000000U
+#endif
+
+// #define STM32_HSE_BYPASS
+
+/*
+ * MCU type as defined in the ST header.
+ */
+#define STM32F303xC
+
+/*
+ * IO pins assignments.
+ */
+#define GPIOA_PIN0       0U
+#define GPIOA_PIN1       1U
+#define GPIOA_PIN2       2U
+#define GPIOA_PIN3       3U
+#define GPIOA_PIN4       4U
+#define GPIOA_PIN5       5U
+#define GPIOA_PIN6       6U
+#define GPIOA_PIN7       7U
+#define GPIOA_PIN8       8U
+#define GPIOA_PIN9       9U
+#define GPIOA_PIN10      10U
+#define GPIOA_USB_DM     11U
+#define GPIOA_USB_DP     12U
+#define GPIOA_SWDIO      13U
+#define GPIOA_SWCLK      14U
+#define GPIOA_PIN15      15U
+
+#define GPIOB_PIN0       0U
+#define GPIOB_PIN1       1U
+#define GPIOB_PIN2       2U
+#define GPIOB_PIN3       3U
+#define GPIOB_PIN4       4U
+#define GPIOB_PIN5       5U
+#define GPIOB_PIN6       6U
+#define GPIOB_PIN7       7U
+#define GPIOB_PIN8       8U
+#define GPIOB_PIN9       9U
+#define GPIOB_PIN10      10U
+#define GPIOB_PIN11      11U
+#define GPIOB_PIN12      12U
+#define GPIOB_PIN13      13U
+#define GPIOB_PIN14      14U
+#define GPIOB_PIN15      15U
+
+#define GPIOC_PIN0       0U
+#define GPIOC_PIN1       1U
+#define GPIOC_PIN2       2U
+#define GPIOC_PIN3       3U
+#define GPIOC_PIN4       4U
+#define GPIOC_PIN5       5U
+#define GPIOC_PIN6       6U
+#define GPIOC_PIN7       7U
+#define GPIOC_PIN8       8U
+#define GPIOC_PIN9       9U
+#define GPIOC_PIN10      10U
+#define GPIOC_PIN11      11U
+#define GPIOC_PIN12      12U
+#define GPIOC_PIN13      13U
+#define GPIOC_PIN14      14U
+#define GPIOC_PIN15      15U
+
+#define GPIOD_PIN0       0U
+#define GPIOD_PIN1       1U
+#define GPIOD_PIN2       2U
+#define GPIOD_PIN3       3U
+#define GPIOD_PIN4       4U
+#define GPIOD_PIN5       5U
+#define GPIOD_PIN6       6U
+#define GPIOD_PIN7       7U
+#define GPIOD_PIN8       8U
+#define GPIOD_PIN9       9U
+#define GPIOD_PIN10      10U
+#define GPIOD_PIN11      11U
+#define GPIOD_PIN12      12U
+#define GPIOD_PIN13      13U
+#define GPIOD_PIN14      14U
+#define GPIOD_PIN15      15U
+
+#define GPIOE_PIN0       0U
+#define GPIOE_PIN1       1U
+#define GPIOE_PIN2       2U
+#define GPIOE_PIN3       3U
+#define GPIOE_PIN4       4U
+#define GPIOE_PIN5       5U
+#define GPIOE_PIN6       6U
+#define GPIOE_PIN7       7U
+#define GPIOE_PIN8       8U
+#define GPIOE_PIN9       9U
+#define GPIOE_PIN10      10U
+#define GPIOE_PIN11      11U
+#define GPIOE_PIN12      12U
+#define GPIOE_PIN13      13U
+#define GPIOE_PIN14      14U
+#define GPIOE_PIN15      15U
+
+#define GPIOF_I2C2_SDA   0U
+#define GPIOF_I2C2_SCL   1U
+#define GPIOF_PIN2       2U
+#define GPIOF_PIN3       3U
+#define GPIOF_PIN4       4U
+#define GPIOF_PIN5       5U
+#define GPIOF_PIN6       6U
+#define GPIOF_PIN7       7U
+#define GPIOF_PIN8       8U
+#define GPIOF_PIN9       9U
+#define GPIOF_PIN10      10U
+#define GPIOF_PIN11      11U
+#define GPIOF_PIN12      12U
+#define GPIOF_PIN13      13U
+#define GPIOF_PIN14      14U
+#define GPIOF_PIN15      15U
+
+#define GPIOG_PIN0       0U
+#define GPIOG_PIN1       1U
+#define GPIOG_PIN2       2U
+#define GPIOG_PIN3       3U
+#define GPIOG_PIN4       4U
+#define GPIOG_PIN5       5U
+#define GPIOG_PIN6       6U
+#define GPIOG_PIN7       7U
+#define GPIOG_PIN8       8U
+#define GPIOG_PIN9       9U
+#define GPIOG_PIN10      10U
+#define GPIOG_PIN11      11U
+#define GPIOG_PIN12      12U
+#define GPIOG_PIN13      13U
+#define GPIOG_PIN14      14U
+#define GPIOG_PIN15      15U
+
+#define GPIOH_PIN0       0U
+#define GPIOH_PIN1       1U
+#define GPIOH_PIN2       2U
+#define GPIOH_PIN3       3U
+#define GPIOH_PIN4       4U
+#define GPIOH_PIN5       5U
+#define GPIOH_PIN6       6U
+#define GPIOH_PIN7       7U
+#define GPIOH_PIN8       8U
+#define GPIOH_PIN9       9U
+#define GPIOH_PIN10      10U
+#define GPIOH_PIN11      11U
+#define GPIOH_PIN12      12U
+#define GPIOH_PIN13      13U
+#define GPIOH_PIN14      14U
+#define GPIOH_PIN15      15U
+
+/*
+ * IO lines assignments.
+ */
+#define LINE_L3GD20_SDI             PAL_LINE(GPIOA, 7U)
+#define LINE_USB_DM                 PAL_LINE(GPIOA, 11U)
+#define LINE_USB_DP                 PAL_LINE(GPIOA, 12U)
+#define LINE_SWDIO                  PAL_LINE(GPIOA, 13U)
+#define LINE_SWCLK                  PAL_LINE(GPIOA, 14U)
+
+#define LINE_PIN6               PAL_LINE(GPIOF, 0U)
+#define LINE_PIN7               PAL_LINE(GPIOF, 1U)
+
+#define LINE_CAPS_LOCK               PAL_LINE(GPIOB, 7U)
+
+
+/*
+ * I/O ports initial setup, this configuration is established soon after reset
+ * in the initialization code.
+ * Please refer to the STM32 Reference Manual for details.
+ */
+#define PIN_MODE_INPUT(n)           (0U << ((n) * 2U))
+#define PIN_MODE_OUTPUT(n)          (1U << ((n) * 2U))
+#define PIN_MODE_ALTERNATE(n)       (2U << ((n) * 2U))
+#define PIN_MODE_ANALOG(n)          (3U << ((n) * 2U))
+#define PIN_ODR_LOW(n)              (0U << (n))
+#define PIN_ODR_HIGH(n)             (1U << (n))
+#define PIN_OTYPE_PUSHPULL(n)       (0U << (n))
+#define PIN_OTYPE_OPENDRAIN(n)      (1U << (n))
+#define PIN_OSPEED_VERYLOW(n)       (0U << ((n) * 2U))
+#define PIN_OSPEED_LOW(n)           (1U << ((n) * 2U))
+#define PIN_OSPEED_MEDIUM(n)        (2U << ((n) * 2U))
+#define PIN_OSPEED_HIGH(n)          (3U << ((n) * 2U))
+#define PIN_PUPDR_FLOATING(n)       (0U << ((n) * 2U))
+#define PIN_PUPDR_PULLUP(n)         (1U << ((n) * 2U))
+#define PIN_PUPDR_PULLDOWN(n)       (2U << ((n) * 2U))
+#define PIN_AFIO_AF(n, v)           ((v) << (((n) % 8U) * 4U))
+
+/*
+ * GPIOA setup:
+ *
+ * PA0  - NC
+ * PA1  - NC
+ * PA2  - COL1
+ * PA3  - COL2
+ * PA4  - SPEAKER1
+ * PA5  - SPEAKER2
+ * PA6  - COL3
+ * PA7  - COL8
+ * PA8  - COL6
+ * PA9  - COL7
+ * PA10 - ROW5
+ * PA11 - USB_DM                    (alternate 14).
+ * PA12 - USB_DP                    (alternate 14).
+ * PA13 - SWDIO                     (alternate 0).
+ * PA14 - SWCLK                     (alternate 0).
+ * PA15 - ROW4
+ */
+#define VAL_GPIOA_MODER             (PIN_MODE_INPUT(GPIOA_PIN0) |         \
+                                     PIN_MODE_ALTERNATE(GPIOA_PIN1) |           \
+                                     PIN_MODE_INPUT(GPIOA_PIN2) |           \
+                                     PIN_MODE_INPUT(GPIOA_PIN3) |           \
+                                     PIN_MODE_INPUT(GPIOA_PIN4) |           \
+                                     PIN_MODE_INPUT(GPIOA_PIN5) |   \
+                                     PIN_MODE_INPUT(GPIOA_PIN6) |  \
+                                     PIN_MODE_INPUT(GPIOA_PIN7) |  \
+                                     PIN_MODE_INPUT(GPIOA_PIN8) |           \
+                                     PIN_MODE_INPUT(GPIOA_PIN9) |           \
+                                     PIN_MODE_INPUT(GPIOA_PIN10) |          \
+                                     PIN_MODE_ALTERNATE(GPIOA_USB_DM) |     \
+                                     PIN_MODE_ALTERNATE(GPIOA_USB_DP) |     \
+                                     PIN_MODE_ALTERNATE(GPIOA_SWDIO) |      \
+                                     PIN_MODE_ALTERNATE(GPIOA_SWCLK) |      \
+                                     PIN_MODE_INPUT(GPIOA_PIN15))
+#define VAL_GPIOA_OTYPER            (PIN_OTYPE_PUSHPULL(GPIOA_PIN0) |     \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN1) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN2) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN3) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN4) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN5) |   \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN6) |  \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN7) |  \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN8) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN9) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN10) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_USB_DM) |     \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_USB_DP) |     \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_SWDIO) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_SWCLK) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN15))
+#define VAL_GPIOA_OSPEEDR           (PIN_OSPEED_VERYLOW(GPIOA_PIN0) |     \
+                                     PIN_OSPEED_HIGH(GPIOA_PIN1) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOA_PIN2) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOA_PIN3) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOA_PIN4) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOA_PIN5) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOA_PIN6) |     \
+                                     PIN_OSPEED_VERYLOW(GPIOA_PIN7) |     \
+                                     PIN_OSPEED_VERYLOW(GPIOA_PIN8) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOA_PIN9) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOA_PIN10) |      \
+                                     PIN_OSPEED_HIGH(GPIOA_USB_DM) |        \
+                                     PIN_OSPEED_VERYLOW(GPIOA_USB_DP) |     \
+                                     PIN_OSPEED_HIGH(GPIOA_SWDIO) |         \
+                                     PIN_OSPEED_HIGH(GPIOA_SWCLK) |         \
+                                     PIN_OSPEED_VERYLOW(GPIOA_PIN15))
+#define VAL_GPIOA_PUPDR             (PIN_PUPDR_FLOATING(GPIOA_PIN0) |     \
+                                     PIN_PUPDR_FLOATING(GPIOA_PIN1) |         \
+                                     PIN_PUPDR_PULLUP(GPIOA_PIN2) |         \
+                                     PIN_PUPDR_PULLUP(GPIOA_PIN3) |         \
+                                     PIN_PUPDR_PULLUP(GPIOA_PIN4) |         \
+                                     PIN_PUPDR_PULLUP(GPIOA_PIN5) |   \
+                                     PIN_PUPDR_PULLUP(GPIOA_PIN6) |    \
+                                     PIN_PUPDR_FLOATING(GPIOA_PIN7) |  \
+                                     PIN_PUPDR_PULLUP(GPIOA_PIN8) |         \
+                                     PIN_PUPDR_PULLUP(GPIOA_PIN9) |         \
+                                     PIN_PUPDR_PULLUP(GPIOA_PIN10) |        \
+                                     PIN_PUPDR_FLOATING(GPIOA_USB_DM) |     \
+                                     PIN_PUPDR_FLOATING(GPIOA_USB_DP) |     \
+                                     PIN_PUPDR_PULLUP(GPIOA_SWDIO) |        \
+                                     PIN_PUPDR_PULLDOWN(GPIOA_SWCLK) |      \
+                                     PIN_PUPDR_PULLUP(GPIOA_PIN15))
+#define VAL_GPIOA_ODR               (PIN_ODR_HIGH(GPIOA_PIN0) |           \
+                                     PIN_ODR_HIGH(GPIOA_PIN1) |             \
+                                     PIN_ODR_HIGH(GPIOA_PIN2) |             \
+                                     PIN_ODR_HIGH(GPIOA_PIN3) |             \
+                                     PIN_ODR_HIGH(GPIOA_PIN4) |             \
+                                     PIN_ODR_HIGH(GPIOA_PIN5) |         \
+                                     PIN_ODR_HIGH(GPIOA_PIN6) |        \
+                                     PIN_ODR_HIGH(GPIOA_PIN7) |        \
+                                     PIN_ODR_HIGH(GPIOA_PIN8) |             \
+                                     PIN_ODR_HIGH(GPIOA_PIN9) |             \
+                                     PIN_ODR_HIGH(GPIOA_PIN10) |            \
+                                     PIN_ODR_HIGH(GPIOA_USB_DM) |           \
+                                     PIN_ODR_HIGH(GPIOA_USB_DP) |           \
+                                     PIN_ODR_HIGH(GPIOA_SWDIO) |            \
+                                     PIN_ODR_HIGH(GPIOA_SWCLK) |            \
+                                     PIN_ODR_HIGH(GPIOA_PIN15))
+#define VAL_GPIOA_AFRL              (PIN_AFIO_AF(GPIOA_PIN0, 0) |         \
+                                     PIN_AFIO_AF(GPIOA_PIN1, 1) |           \
+                                     PIN_AFIO_AF(GPIOA_PIN2, 0) |           \
+                                     PIN_AFIO_AF(GPIOA_PIN3, 0) |           \
+                                     PIN_AFIO_AF(GPIOA_PIN4, 0) |           \
+                                     PIN_AFIO_AF(GPIOA_PIN5, 5) |       \
+                                     PIN_AFIO_AF(GPIOA_PIN6, 5) |      \
+                                     PIN_AFIO_AF(GPIOA_PIN7, 5))
+#define VAL_GPIOA_AFRH              (PIN_AFIO_AF(GPIOA_PIN8, 0) |           \
+                                     PIN_AFIO_AF(GPIOA_PIN9, 0) |           \
+                                     PIN_AFIO_AF(GPIOA_PIN10, 0) |          \
+                                     PIN_AFIO_AF(GPIOA_USB_DM, 14) |        \
+                                     PIN_AFIO_AF(GPIOA_USB_DP, 14) |        \
+                                     PIN_AFIO_AF(GPIOA_SWDIO, 0) |          \
+                                     PIN_AFIO_AF(GPIOA_SWCLK, 0) |          \
+                                     PIN_AFIO_AF(GPIOA_PIN15, 0))
+
+/*
+ * GPIOB setup:
+ *
+ * PB0  - PIN0                      (input pullup).
+ * PB1  - PIN1                      (input pullup).
+ * PB2  - PIN2                      (input pullup).
+ * PB3  - PIN3                       (alternate 0).
+ * PB4  - PIN4                      (input pullup).
+ * PB5  - PIN5                      (input pullup).
+ * PB6  - PIN6 LSM303DLHC_SCL   (alternate 4).
+ * PB7  - PIN7 LSM303DLHC_SDA   (alternate 4).
+ * PB8  - PIN8                      (input pullup).
+ * PB9  - PIN9                      (input pullup).
+ * PB10 - PIN10                     (input pullup).
+ * PB11 - PIN11                     (input pullup).
+ * PB12 - PIN12                     (input pullup).
+ * PB13 - PIN13                     (input pullup).
+ * PB14 - PIN14                     (input pullup).
+ * PB15 - PIN15                     (input pullup).
+ */
+#define VAL_GPIOB_MODER             (PIN_MODE_INPUT(GPIOB_PIN0) |           \
+                                     PIN_MODE_INPUT(GPIOB_PIN1) |           \
+                                     PIN_MODE_INPUT(GPIOB_PIN2) |           \
+                                     PIN_MODE_ALTERNATE(GPIOB_PIN3) |        \
+                                     PIN_MODE_INPUT(GPIOB_PIN4) |           \
+                                     PIN_MODE_INPUT(GPIOB_PIN5) |           \
+                                     PIN_MODE_ALTERNATE(GPIOB_PIN6) |   \
+                                     PIN_MODE_OUTPUT(GPIOB_PIN7) |   \
+                                     PIN_MODE_INPUT(GPIOB_PIN8) |           \
+                                     PIN_MODE_INPUT(GPIOB_PIN9) |           \
+                                     PIN_MODE_INPUT(GPIOB_PIN10) |          \
+                                     PIN_MODE_INPUT(GPIOB_PIN11) |          \
+                                     PIN_MODE_INPUT(GPIOB_PIN12) |          \
+                                     PIN_MODE_INPUT(GPIOB_PIN13) |          \
+                                     PIN_MODE_INPUT(GPIOB_PIN14) |          \
+                                     PIN_MODE_INPUT(GPIOB_PIN15))
+#define VAL_GPIOB_OTYPER            (PIN_OTYPE_PUSHPULL(GPIOB_PIN0) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN1) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN2) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN3) |        \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN4) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN5) |       \
+                                     PIN_OTYPE_OPENDRAIN(GPIOB_PIN6) |  \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN7) |  \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN8) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN9) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN10) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN11) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN12) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN13) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN14) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN15))
+#define VAL_GPIOB_OSPEEDR           (PIN_OSPEED_VERYLOW(GPIOB_PIN0) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN1) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN2) |       \
+                                     PIN_OSPEED_HIGH(GPIOB_PIN3) |           \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN4) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN5) |       \
+                                     PIN_OSPEED_HIGH(GPIOB_PIN6) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN7) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN8) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN9) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN10) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN11) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN12) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN13) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN14) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN15))
+#define VAL_GPIOB_PUPDR             (PIN_PUPDR_PULLUP(GPIOB_PIN0) |         \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN1) |         \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN2) |         \
+                                     PIN_PUPDR_FLOATING(GPIOB_PIN3) |        \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN4) |         \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN5) |         \
+                                     PIN_PUPDR_FLOATING(GPIOB_PIN6) |   \
+                                     PIN_PUPDR_PULLDOWN(GPIOB_PIN7) |   \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN8) |         \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN9) |         \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN10) |        \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN11) |        \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN12) |        \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN13) |        \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN14) |        \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN15))
+#define VAL_GPIOB_ODR               (PIN_ODR_HIGH(GPIOB_PIN0) |             \
+                                     PIN_ODR_HIGH(GPIOB_PIN1) |             \
+                                     PIN_ODR_HIGH(GPIOB_PIN2) |             \
+                                     PIN_ODR_HIGH(GPIOB_PIN3) |              \
+                                     PIN_ODR_HIGH(GPIOB_PIN4) |             \
+                                     PIN_ODR_HIGH(GPIOB_PIN5) |             \
+                                     PIN_ODR_HIGH(GPIOB_PIN6) |         \
+                                     PIN_ODR_LOW(GPIOB_PIN7) |         \
+                                     PIN_ODR_HIGH(GPIOB_PIN8) |             \
+                                     PIN_ODR_HIGH(GPIOB_PIN9) |             \
+                                     PIN_ODR_HIGH(GPIOB_PIN10) |            \
+                                     PIN_ODR_HIGH(GPIOB_PIN11) |            \
+                                     PIN_ODR_HIGH(GPIOB_PIN12) |            \
+                                     PIN_ODR_HIGH(GPIOB_PIN13) |            \
+                                     PIN_ODR_HIGH(GPIOB_PIN14) |            \
+                                     PIN_ODR_HIGH(GPIOB_PIN15))
+#define VAL_GPIOB_AFRL              (PIN_AFIO_AF(GPIOB_PIN0, 0) |           \
+                                     PIN_AFIO_AF(GPIOB_PIN1, 0) |           \
+                                     PIN_AFIO_AF(GPIOB_PIN2, 0) |           \
+                                     PIN_AFIO_AF(GPIOB_PIN3, 0) |            \
+                                     PIN_AFIO_AF(GPIOB_PIN4, 0) |           \
+                                     PIN_AFIO_AF(GPIOB_PIN5, 0) |           \
+                                     PIN_AFIO_AF(GPIOB_PIN6, 4) |       \
+                                     PIN_AFIO_AF(GPIOB_PIN7, 0))
+#define VAL_GPIOB_AFRH              (PIN_AFIO_AF(GPIOB_PIN8, 0) |           \
+                                     PIN_AFIO_AF(GPIOB_PIN9, 0) |           \
+                                     PIN_AFIO_AF(GPIOB_PIN10, 0) |          \
+                                     PIN_AFIO_AF(GPIOB_PIN11, 0) |          \
+                                     PIN_AFIO_AF(GPIOB_PIN12, 0) |          \
+                                     PIN_AFIO_AF(GPIOB_PIN13, 0) |          \
+                                     PIN_AFIO_AF(GPIOB_PIN14, 0) |          \
+                                     PIN_AFIO_AF(GPIOB_PIN15, 0))
+
+/*
+ * GPIOC setup:
+ *
+ * PC0  - PIN0                      (input pullup).
+ * PC1  - PIN1                      (input pullup).
+ * PC2  - PIN2                      (input pullup).
+ * PC3  - PIN3                      (input pullup).
+ * PC4  - PIN4                      (input pullup).
+ * PC5  - PIN5                      (input pullup).
+ * PC6  - PIN6                      (input pullup).
+ * PC7  - PIN7                      (input pullup).
+ * PC8  - PIN8                      (input pullup).
+ * PC9  - PIN9                      (input pullup).
+ * PC10 - PIN10                     (input pullup).
+ * PC11 - PIN11                     (input pullup).
+ * PC12 - PIN12                     (input pullup).
+ * PC13 - PIN13                     (input pullup).
+ * PC14 - PIN14                  (input floating).
+ * PC15 - PIN15                 (input floating).
+ */
+#define VAL_GPIOC_MODER             (PIN_MODE_INPUT(GPIOC_PIN0) |           \
+                                     PIN_MODE_INPUT(GPIOC_PIN1) |           \
+                                     PIN_MODE_INPUT(GPIOC_PIN2) |           \
+                                     PIN_MODE_INPUT(GPIOC_PIN3) |           \
+                                     PIN_MODE_INPUT(GPIOC_PIN4) |           \
+                                     PIN_MODE_INPUT(GPIOC_PIN5) |           \
+                                     PIN_MODE_INPUT(GPIOC_PIN6) |           \
+                                     PIN_MODE_INPUT(GPIOC_PIN7) |           \
+                                     PIN_MODE_INPUT(GPIOC_PIN8) |           \
+                                     PIN_MODE_INPUT(GPIOC_PIN9) |           \
+                                     PIN_MODE_INPUT(GPIOC_PIN10) |          \
+                                     PIN_MODE_INPUT(GPIOC_PIN11) |          \
+                                     PIN_MODE_INPUT(GPIOC_PIN12) |          \
+                                     PIN_MODE_INPUT(GPIOC_PIN13) |          \
+                                     PIN_MODE_INPUT(GPIOC_PIN14) |       \
+                                     PIN_MODE_INPUT(GPIOC_PIN15))
+#define VAL_GPIOC_OTYPER            (PIN_OTYPE_PUSHPULL(GPIOC_PIN0) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN1) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN2) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN3) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN4) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN5) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN6) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN7) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN8) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN9) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN10) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN11) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN12) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN13) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN14) |   \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN15))
+#define VAL_GPIOC_OSPEEDR           (PIN_OSPEED_VERYLOW(GPIOC_PIN0) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN1) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN2) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN3) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN4) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN5) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN6) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN7) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN8) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN9) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN10) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN11) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN12) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN13) |      \
+                                     PIN_OSPEED_HIGH(GPIOC_PIN14) |      \
+                                     PIN_OSPEED_HIGH(GPIOC_PIN15))
+#define VAL_GPIOC_PUPDR             (PIN_PUPDR_PULLUP(GPIOC_PIN0) |         \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN1) |         \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN2) |         \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN3) |         \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN4) |         \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN5) |         \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN6) |         \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN7) |         \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN8) |         \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN9) |         \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN10) |        \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN11) |        \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN12) |        \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN13) |        \
+                                     PIN_PUPDR_FLOATING(GPIOC_PIN14) |   \
+                                     PIN_PUPDR_FLOATING(GPIOC_PIN15))
+#define VAL_GPIOC_ODR               (PIN_ODR_HIGH(GPIOC_PIN0) |             \
+                                     PIN_ODR_HIGH(GPIOC_PIN1) |             \
+                                     PIN_ODR_HIGH(GPIOC_PIN2) |             \
+                                     PIN_ODR_HIGH(GPIOC_PIN3) |             \
+                                     PIN_ODR_HIGH(GPIOC_PIN4) |             \
+                                     PIN_ODR_HIGH(GPIOC_PIN5) |             \
+                                     PIN_ODR_HIGH(GPIOC_PIN6) |             \
+                                     PIN_ODR_HIGH(GPIOC_PIN7) |             \
+                                     PIN_ODR_HIGH(GPIOC_PIN8) |             \
+                                     PIN_ODR_HIGH(GPIOC_PIN9) |             \
+                                     PIN_ODR_HIGH(GPIOC_PIN10) |            \
+                                     PIN_ODR_HIGH(GPIOC_PIN11) |            \
+                                     PIN_ODR_HIGH(GPIOC_PIN12) |            \
+                                     PIN_ODR_HIGH(GPIOC_PIN13) |            \
+                                     PIN_ODR_HIGH(GPIOC_PIN14) |         \
+                                     PIN_ODR_HIGH(GPIOC_PIN15))
+#define VAL_GPIOC_AFRL              (PIN_AFIO_AF(GPIOC_PIN0, 0) |           \
+                                     PIN_AFIO_AF(GPIOC_PIN1, 0) |           \
+                                     PIN_AFIO_AF(GPIOC_PIN2, 0) |           \
+                                     PIN_AFIO_AF(GPIOC_PIN3, 0) |           \
+                                     PIN_AFIO_AF(GPIOC_PIN4, 0) |           \
+                                     PIN_AFIO_AF(GPIOC_PIN5, 0) |           \
+                                     PIN_AFIO_AF(GPIOC_PIN6, 0) |           \
+                                     PIN_AFIO_AF(GPIOC_PIN7, 0))
+#define VAL_GPIOC_AFRH              (PIN_AFIO_AF(GPIOC_PIN8, 0) |           \
+                                     PIN_AFIO_AF(GPIOC_PIN9, 0) |           \
+                                     PIN_AFIO_AF(GPIOC_PIN10, 0) |          \
+                                     PIN_AFIO_AF(GPIOC_PIN11, 0) |          \
+                                     PIN_AFIO_AF(GPIOC_PIN12, 0) |          \
+                                     PIN_AFIO_AF(GPIOC_PIN13, 0) |          \
+                                     PIN_AFIO_AF(GPIOC_PIN14, 0) |       \
+                                     PIN_AFIO_AF(GPIOC_PIN15, 0))
+
+/*
+ * GPIOD setup:
+ *
+ * PD0  - PIN0                      (input pullup).
+ * PD1  - PIN1                      (input pullup).
+ * PD2  - PIN2                      (input pullup).
+ * PD3  - PIN3                      (input pullup).
+ * PD4  - PIN4                      (input pullup).
+ * PD5  - PIN5                      (input pullup).
+ * PD6  - PIN6                      (input pullup).
+ * PD7  - PIN7                      (input pullup).
+ * PD8  - PIN8                      (input pullup).
+ * PD9  - PIN9                      (input pullup).
+ * PD11 - PIN10                     (input pullup).
+ * PD11 - PIN11                     (input pullup).
+ * PD12 - PIN12                     (input pullup).
+ * PD13 - PIN13                     (input pullup).
+ * PD14 - PIN14                     (input pullup).
+ * PD15 - PIN15                     (input pullup).
+ */
+#define VAL_GPIOD_MODER             (PIN_MODE_INPUT(GPIOD_PIN0) |           \
+                                     PIN_MODE_INPUT(GPIOD_PIN1) |           \
+                                     PIN_MODE_INPUT(GPIOD_PIN2) |           \
+                                     PIN_MODE_INPUT(GPIOD_PIN3) |           \
+                                     PIN_MODE_INPUT(GPIOD_PIN4) |           \
+                                     PIN_MODE_INPUT(GPIOD_PIN5) |           \
+                                     PIN_MODE_INPUT(GPIOD_PIN6) |           \
+                                     PIN_MODE_INPUT(GPIOD_PIN7) |           \
+                                     PIN_MODE_INPUT(GPIOD_PIN8) |           \
+                                     PIN_MODE_INPUT(GPIOD_PIN9) |           \
+                                     PIN_MODE_INPUT(GPIOD_PIN10) |          \
+                                     PIN_MODE_INPUT(GPIOD_PIN11) |          \
+                                     PIN_MODE_INPUT(GPIOD_PIN12) |          \
+                                     PIN_MODE_INPUT(GPIOD_PIN13) |          \
+                                     PIN_MODE_INPUT(GPIOD_PIN14) |          \
+                                     PIN_MODE_INPUT(GPIOD_PIN15))
+#define VAL_GPIOD_OTYPER            (PIN_OTYPE_PUSHPULL(GPIOD_PIN0) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN1) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN2) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN3) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN4) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN5) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN6) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN7) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN8) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN9) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN10) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN11) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN12) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN13) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN14) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN15))
+#define VAL_GPIOD_OSPEEDR           (PIN_OSPEED_VERYLOW(GPIOD_PIN0) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOD_PIN1) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOD_PIN2) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOD_PIN3) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOD_PIN4) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOD_PIN5) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOD_PIN6) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOD_PIN7) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOD_PIN8) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOD_PIN9) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOD_PIN10) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOD_PIN11) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOD_PIN12) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOD_PIN13) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOD_PIN14) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOD_PIN15))
+#define VAL_GPIOD_PUPDR             (PIN_PUPDR_PULLUP(GPIOD_PIN0) |         \
+                                     PIN_PUPDR_PULLUP(GPIOD_PIN1) |         \
+                                     PIN_PUPDR_PULLUP(GPIOD_PIN2) |         \
+                                     PIN_PUPDR_PULLUP(GPIOD_PIN3) |         \
+                                     PIN_PUPDR_PULLUP(GPIOD_PIN4) |         \
+                                     PIN_PUPDR_PULLUP(GPIOD_PIN5) |         \
+                                     PIN_PUPDR_PULLUP(GPIOD_PIN6) |         \
+                                     PIN_PUPDR_PULLUP(GPIOD_PIN7) |         \
+                                     PIN_PUPDR_PULLUP(GPIOD_PIN8) |         \
+                                     PIN_PUPDR_PULLUP(GPIOD_PIN9) |         \
+                                     PIN_PUPDR_PULLUP(GPIOD_PIN10) |        \
+                                     PIN_PUPDR_PULLUP(GPIOD_PIN11) |        \
+                                     PIN_PUPDR_PULLUP(GPIOD_PIN12) |        \
+                                     PIN_PUPDR_PULLUP(GPIOD_PIN13) |        \
+                                     PIN_PUPDR_PULLUP(GPIOD_PIN14) |        \
+                                     PIN_PUPDR_PULLUP(GPIOD_PIN15))
+#define VAL_GPIOD_ODR               (PIN_ODR_HIGH(GPIOD_PIN0) |             \
+                                     PIN_ODR_HIGH(GPIOD_PIN1) |             \
+                                     PIN_ODR_HIGH(GPIOD_PIN2) |             \
+                                     PIN_ODR_HIGH(GPIOD_PIN3) |             \
+                                     PIN_ODR_HIGH(GPIOD_PIN4) |             \
+                                     PIN_ODR_HIGH(GPIOD_PIN5) |             \
+                                     PIN_ODR_HIGH(GPIOD_PIN6) |             \
+                                     PIN_ODR_HIGH(GPIOD_PIN7) |             \
+                                     PIN_ODR_HIGH(GPIOD_PIN8) |             \
+                                     PIN_ODR_HIGH(GPIOD_PIN9) |             \
+                                     PIN_ODR_HIGH(GPIOD_PIN10) |            \
+                                     PIN_ODR_HIGH(GPIOD_PIN11) |            \
+                                     PIN_ODR_HIGH(GPIOD_PIN12) |            \
+                                     PIN_ODR_HIGH(GPIOD_PIN13) |            \
+                                     PIN_ODR_HIGH(GPIOD_PIN14) |            \
+                                     PIN_ODR_HIGH(GPIOD_PIN15))
+#define VAL_GPIOD_AFRL              (PIN_AFIO_AF(GPIOD_PIN0, 0) |           \
+                                     PIN_AFIO_AF(GPIOD_PIN1, 0) |           \
+                                     PIN_AFIO_AF(GPIOD_PIN2, 0) |           \
+                                     PIN_AFIO_AF(GPIOD_PIN3, 0) |           \
+                                     PIN_AFIO_AF(GPIOD_PIN4, 0) |           \
+                                     PIN_AFIO_AF(GPIOD_PIN5, 0) |           \
+                                     PIN_AFIO_AF(GPIOD_PIN6, 0) |           \
+                                     PIN_AFIO_AF(GPIOD_PIN7, 0))
+#define VAL_GPIOD_AFRH              (PIN_AFIO_AF(GPIOD_PIN8, 0) |           \
+                                     PIN_AFIO_AF(GPIOD_PIN9, 0) |           \
+                                     PIN_AFIO_AF(GPIOD_PIN10, 0) |          \
+                                     PIN_AFIO_AF(GPIOD_PIN11, 0) |          \
+                                     PIN_AFIO_AF(GPIOD_PIN12, 0) |          \
+                                     PIN_AFIO_AF(GPIOD_PIN13, 0) |          \
+                                     PIN_AFIO_AF(GPIOD_PIN14, 0) |          \
+                                     PIN_AFIO_AF(GPIOD_PIN15, 0))
+
+/*
+ * GPIOE setup:
+ *
+ * PE0  - PIN0               (input pullup).
+ * PE1  - PIN1               (input pullup).
+ * PE2  - PIN2           (input pullup).
+ * PE3  - PIN3 L3GD20_CS         (output pushpull maximum).
+ * PE4  - PIN4           (input pullup).
+ * PE5  - PIN5           (input pullup).
+ * PE6  - PIN6                      (input pullup).
+ * PE7  - PIN7                      (input pullup).
+ * PE8  - PIN8                 (output pushpull maximum).
+ * PE9  - PIN9                  (output pushpull maximum).
+ * PE10 - PIN10               (output pushpull maximum).
+ * PE11 - PIN11                (output pushpull maximum).
+ * PE12 - PIN12                 (output pushpull maximum).
+ * PE13 - PIN13                 (output pushpull maximum).
+ * PE14 - PIN14               (output pushpull maximum).
+ * PE15 - PIN15                (output pushpull maximum).
+ */
+#define VAL_GPIOE_MODER             (PIN_MODE_INPUT(GPIOE_PIN0) |    \
+                                     PIN_MODE_INPUT(GPIOE_PIN1) |    \
+                                     PIN_MODE_INPUT(GPIOE_PIN2) |\
+                                     PIN_MODE_OUTPUT(GPIOE_PIN3) |       \
+                                     PIN_MODE_INPUT(GPIOE_PIN4) |\
+                                     PIN_MODE_INPUT(GPIOE_PIN5) |\
+                                     PIN_MODE_INPUT(GPIOE_PIN6) |           \
+                                     PIN_MODE_INPUT(GPIOE_PIN7) |           \
+                                     PIN_MODE_OUTPUT(GPIOE_PIN8) |     \
+                                     PIN_MODE_OUTPUT(GPIOE_PIN9) |      \
+                                     PIN_MODE_OUTPUT(GPIOE_PIN10) |   \
+                                     PIN_MODE_OUTPUT(GPIOE_PIN11) |    \
+                                     PIN_MODE_OUTPUT(GPIOE_PIN12) |     \
+                                     PIN_MODE_OUTPUT(GPIOE_PIN13) |     \
+                                     PIN_MODE_OUTPUT(GPIOE_PIN14) |   \
+                                     PIN_MODE_OUTPUT(GPIOE_PIN15))
+#define VAL_GPIOE_OTYPER            (PIN_OTYPE_PUSHPULL(GPIOE_PIN0) |\
+                                     PIN_OTYPE_PUSHPULL(GPIOE_PIN1) |\
+                                     PIN_OTYPE_PUSHPULL(GPIOE_PIN2) |\
+                                     PIN_OTYPE_PUSHPULL(GPIOE_PIN3) |    \
+                                     PIN_OTYPE_PUSHPULL(GPIOE_PIN4) |\
+                                     PIN_OTYPE_PUSHPULL(GPIOE_PIN5) |\
+                                     PIN_OTYPE_PUSHPULL(GPIOE_PIN6) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOE_PIN7) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOE_PIN8) |  \
+                                     PIN_OTYPE_PUSHPULL(GPIOE_PIN9) |   \
+                                     PIN_OTYPE_PUSHPULL(GPIOE_PIN10) |\
+                                     PIN_OTYPE_PUSHPULL(GPIOE_PIN11) | \
+                                     PIN_OTYPE_PUSHPULL(GPIOE_PIN12) |  \
+                                     PIN_OTYPE_PUSHPULL(GPIOE_PIN13) |  \
+                                     PIN_OTYPE_PUSHPULL(GPIOE_PIN14) |\
+                                     PIN_OTYPE_PUSHPULL(GPIOE_PIN15))
+#define VAL_GPIOE_OSPEEDR           (PIN_OSPEED_VERYLOW(GPIOE_PIN0) |\
+                                     PIN_OSPEED_VERYLOW(GPIOE_PIN1) |\
+                                     PIN_OSPEED_VERYLOW(GPIOE_PIN2) |\
+                                     PIN_OSPEED_HIGH(GPIOE_PIN3) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOE_PIN4) |\
+                                     PIN_OSPEED_VERYLOW(GPIOE_PIN5) |\
+                                     PIN_OSPEED_VERYLOW(GPIOE_PIN6) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOE_PIN7) |       \
+                                     PIN_OSPEED_HIGH(GPIOE_PIN8) |     \
+                                     PIN_OSPEED_HIGH(GPIOE_PIN9) |      \
+                                     PIN_OSPEED_HIGH(GPIOE_PIN10) |   \
+                                     PIN_OSPEED_HIGH(GPIOE_PIN11) |    \
+                                     PIN_OSPEED_HIGH(GPIOE_PIN12) |     \
+                                     PIN_OSPEED_HIGH(GPIOE_PIN13) |     \
+                                     PIN_OSPEED_HIGH(GPIOE_PIN14) |   \
+                                     PIN_OSPEED_HIGH(GPIOE_PIN15))
+#define VAL_GPIOE_PUPDR             (PIN_PUPDR_PULLUP(GPIOE_PIN0) |  \
+                                     PIN_PUPDR_PULLUP(GPIOE_PIN1) |  \
+                                     PIN_PUPDR_PULLUP(GPIOE_PIN2) |\
+                                     PIN_PUPDR_FLOATING(GPIOE_PIN3) |    \
+                                     PIN_PUPDR_PULLUP(GPIOE_PIN4) |\
+                                     PIN_PUPDR_PULLUP(GPIOE_PIN5) |\
+                                     PIN_PUPDR_PULLUP(GPIOE_PIN6) |         \
+                                     PIN_PUPDR_PULLUP(GPIOE_PIN7) |         \
+                                     PIN_PUPDR_PULLUP(GPIOE_PIN8) |    \
+                                     PIN_PUPDR_PULLUP(GPIOE_PIN9) |     \
+                                     PIN_PUPDR_PULLUP(GPIOE_PIN10) |  \
+                                     PIN_PUPDR_FLOATING(GPIOE_PIN11) | \
+                                     PIN_PUPDR_PULLUP(GPIOE_PIN12) |    \
+                                     PIN_PUPDR_FLOATING(GPIOE_PIN13) |  \
+                                     PIN_PUPDR_FLOATING(GPIOE_PIN14) |\
+                                     PIN_PUPDR_FLOATING(GPIOE_PIN15))
+#define VAL_GPIOE_ODR               (PIN_ODR_HIGH(GPIOE_PIN0) |      \
+                                     PIN_ODR_HIGH(GPIOE_PIN1) |      \
+                                     PIN_ODR_HIGH(GPIOE_PIN2) |  \
+                                     PIN_ODR_HIGH(GPIOE_PIN3) |          \
+                                     PIN_ODR_HIGH(GPIOE_PIN4) |  \
+                                     PIN_ODR_HIGH(GPIOE_PIN5) |  \
+                                     PIN_ODR_HIGH(GPIOE_PIN6) |             \
+                                     PIN_ODR_HIGH(GPIOE_PIN7) |             \
+                                     PIN_ODR_LOW(GPIOE_PIN8) |         \
+                                     PIN_ODR_LOW(GPIOE_PIN9) |          \
+                                     PIN_ODR_LOW(GPIOE_PIN10) |       \
+                                     PIN_ODR_LOW(GPIOE_PIN11) |        \
+                                     PIN_ODR_LOW(GPIOE_PIN12) |         \
+                                     PIN_ODR_LOW(GPIOE_PIN13) |         \
+                                     PIN_ODR_LOW(GPIOE_PIN14) |       \
+                                     PIN_ODR_LOW(GPIOE_PIN15))
+#define VAL_GPIOE_AFRL              (PIN_AFIO_AF(GPIOE_PIN0, 0) |    \
+                                     PIN_AFIO_AF(GPIOE_PIN1, 0) |    \
+                                     PIN_AFIO_AF(GPIOE_PIN2, 0) |\
+                                     PIN_AFIO_AF(GPIOE_PIN3, 0) |        \
+                                     PIN_AFIO_AF(GPIOE_PIN4, 0) |\
+                                     PIN_AFIO_AF(GPIOE_PIN5, 0) |\
+                                     PIN_AFIO_AF(GPIOE_PIN6, 0) |           \
+                                     PIN_AFIO_AF(GPIOE_PIN7, 0))
+#define VAL_GPIOE_AFRH              (PIN_AFIO_AF(GPIOE_PIN8, 0) |      \
+                                     PIN_AFIO_AF(GPIOE_PIN9, 0) |       \
+                                     PIN_AFIO_AF(GPIOE_PIN10, 0) |    \
+                                     PIN_AFIO_AF(GPIOE_PIN11, 0) |     \
+                                     PIN_AFIO_AF(GPIOE_PIN12, 0) |      \
+                                     PIN_AFIO_AF(GPIOE_PIN13, 0) |      \
+                                     PIN_AFIO_AF(GPIOE_PIN14, 0) |    \
+                                     PIN_AFIO_AF(GPIOE_PIN15, 0))
+
+/*
+ * GPIOF setup:
+ *
+ * PF0  - I2C2_SDA                    (input floating).
+ * PF1  - I2C2_SCL                   (input floating).
+ * PF2  - PIN2                      (input pullup).
+ * PF3  - PIN3                      (input pullup).
+ * PF4  - PIN4                      (input pullup).
+ * PF5  - PIN5                      (input pullup).
+ * PF6  - PIN6                      (input pullup).
+ * PF7  - PIN7                      (input pullup).
+ * PF8  - PIN8                      (input pullup).
+ * PF9  - PIN9                      (input pullup).
+ * PF10 - PIN10                     (input pullup).
+ * PF11 - PIN11                     (input pullup).
+ * PF12 - PIN12                     (input pullup).
+ * PF13 - PIN13                     (input pullup).
+ * PF14 - PIN14                     (input pullup).
+ * PF15 - PIN15                     (input pullup).
+ */
+#define VAL_GPIOF_MODER             (PIN_MODE_INPUT(GPIOF_I2C2_SDA) |         \
+                                     PIN_MODE_INPUT(GPIOF_I2C2_SCL) |        \
+                                     PIN_MODE_INPUT(GPIOF_PIN2) |           \
+                                     PIN_MODE_INPUT(GPIOF_PIN3) |           \
+                                     PIN_MODE_INPUT(GPIOF_PIN4) |           \
+                                     PIN_MODE_INPUT(GPIOF_PIN5) |           \
+                                     PIN_MODE_INPUT(GPIOF_PIN6) |           \
+                                     PIN_MODE_INPUT(GPIOF_PIN7) |           \
+                                     PIN_MODE_INPUT(GPIOF_PIN8) |           \
+                                     PIN_MODE_INPUT(GPIOF_PIN9) |           \
+                                     PIN_MODE_INPUT(GPIOF_PIN10) |          \
+                                     PIN_MODE_INPUT(GPIOF_PIN11) |          \
+                                     PIN_MODE_INPUT(GPIOF_PIN12) |          \
+                                     PIN_MODE_INPUT(GPIOF_PIN13) |          \
+                                     PIN_MODE_INPUT(GPIOF_PIN14) |          \
+                                     PIN_MODE_INPUT(GPIOF_PIN15))
+#define VAL_GPIOF_OTYPER            (PIN_OTYPE_PUSHPULL(GPIOF_I2C2_SDA) |     \
+                                     PIN_OTYPE_PUSHPULL(GPIOF_I2C2_SCL) |    \
+                                     PIN_OTYPE_PUSHPULL(GPIOF_PIN2) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOF_PIN3) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOF_PIN4) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOF_PIN5) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOF_PIN6) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOF_PIN7) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOF_PIN8) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOF_PIN9) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOF_PIN10) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOF_PIN11) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOF_PIN12) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOF_PIN13) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOF_PIN14) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOF_PIN15))
+#define VAL_GPIOF_OSPEEDR           (PIN_OSPEED_HIGH(GPIOF_I2C2_SDA) |        \
+                                     PIN_OSPEED_HIGH(GPIOF_I2C2_SCL) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOF_PIN2) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOF_PIN3) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOF_PIN4) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOF_PIN5) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOF_PIN6) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOF_PIN7) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOF_PIN8) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOF_PIN9) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOF_PIN10) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOF_PIN11) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOF_PIN12) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOF_PIN13) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOF_PIN14) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOF_PIN15))
+#define VAL_GPIOF_PUPDR             (PIN_PUPDR_FLOATING(GPIOF_I2C2_SDA) |     \
+                                     PIN_PUPDR_FLOATING(GPIOF_I2C2_SCL) |    \
+                                     PIN_PUPDR_PULLUP(GPIOF_PIN2) |         \
+                                     PIN_PUPDR_PULLUP(GPIOF_PIN3) |         \
+                                     PIN_PUPDR_PULLUP(GPIOF_PIN4) |         \
+                                     PIN_PUPDR_PULLUP(GPIOF_PIN5) |         \
+                                     PIN_PUPDR_PULLUP(GPIOF_PIN6) |         \
+                                     PIN_PUPDR_PULLUP(GPIOF_PIN7) |         \
+                                     PIN_PUPDR_PULLUP(GPIOF_PIN8) |         \
+                                     PIN_PUPDR_PULLUP(GPIOF_PIN9) |         \
+                                     PIN_PUPDR_PULLUP(GPIOF_PIN10) |        \
+                                     PIN_PUPDR_PULLUP(GPIOF_PIN11) |        \
+                                     PIN_PUPDR_PULLUP(GPIOF_PIN12) |        \
+                                     PIN_PUPDR_PULLUP(GPIOF_PIN13) |        \
+                                     PIN_PUPDR_PULLUP(GPIOF_PIN14) |        \
+                                     PIN_PUPDR_PULLUP(GPIOF_PIN15))
+#define VAL_GPIOF_ODR               (PIN_ODR_HIGH(GPIOF_I2C2_SDA) |           \
+                                     PIN_ODR_HIGH(GPIOF_I2C2_SCL) |          \
+                                     PIN_ODR_HIGH(GPIOF_PIN2) |             \
+                                     PIN_ODR_HIGH(GPIOF_PIN3) |             \
+                                     PIN_ODR_HIGH(GPIOF_PIN4) |             \
+                                     PIN_ODR_HIGH(GPIOF_PIN5) |             \
+                                     PIN_ODR_HIGH(GPIOF_PIN6) |             \
+                                     PIN_ODR_HIGH(GPIOF_PIN7) |             \
+                                     PIN_ODR_HIGH(GPIOF_PIN8) |             \
+                                     PIN_ODR_HIGH(GPIOF_PIN9) |             \
+                                     PIN_ODR_HIGH(GPIOF_PIN10) |            \
+                                     PIN_ODR_HIGH(GPIOF_PIN11) |            \
+                                     PIN_ODR_HIGH(GPIOF_PIN12) |            \
+                                     PIN_ODR_HIGH(GPIOF_PIN13) |            \
+                                     PIN_ODR_HIGH(GPIOF_PIN14) |            \
+                                     PIN_ODR_HIGH(GPIOF_PIN15))
+#define VAL_GPIOF_AFRL              (PIN_AFIO_AF(GPIOF_I2C2_SDA, 0) |         \
+                                     PIN_AFIO_AF(GPIOF_I2C2_SCL, 0) |        \
+                                     PIN_AFIO_AF(GPIOF_PIN2, 0) |           \
+                                     PIN_AFIO_AF(GPIOF_PIN3, 0) |           \
+                                     PIN_AFIO_AF(GPIOF_PIN4, 0) |           \
+                                     PIN_AFIO_AF(GPIOF_PIN5, 0) |           \
+                                     PIN_AFIO_AF(GPIOF_PIN6, 0) |           \
+                                     PIN_AFIO_AF(GPIOF_PIN7, 0))
+#define VAL_GPIOF_AFRH              (PIN_AFIO_AF(GPIOF_PIN8, 0) |           \
+                                     PIN_AFIO_AF(GPIOF_PIN9, 0) |           \
+                                     PIN_AFIO_AF(GPIOF_PIN10, 0) |          \
+                                     PIN_AFIO_AF(GPIOF_PIN11, 0) |          \
+                                     PIN_AFIO_AF(GPIOF_PIN12, 0) |          \
+                                     PIN_AFIO_AF(GPIOF_PIN13, 0) |          \
+                                     PIN_AFIO_AF(GPIOF_PIN14, 0) |          \
+                                     PIN_AFIO_AF(GPIOF_PIN15, 0))
+
+/*
+ * GPIOG setup:
+ *
+ * PG0  - PIN0                      (input pullup).
+ * PG1  - PIN1                      (input pullup).
+ * PG2  - PIN2                      (input pullup).
+ * PG3  - PIN3                      (input pullup).
+ * PG4  - PIN4                      (input pullup).
+ * PG5  - PIN5                      (input pullup).
+ * PG6  - PIN6                      (input pullup).
+ * PG7  - PIN7                      (input pullup).
+ * PG8  - PIN8                      (input pullup).
+ * PG9  - PIN9                      (input pullup).
+ * PG10 - PIN10                     (input pullup).
+ * PG11 - PIN11                     (input pullup).
+ * PG12 - PIN12                     (input pullup).
+ * PG13 - PIN13                     (input pullup).
+ * PG14 - PIN14                     (input pullup).
+ * PG15 - PIN15                     (input pullup).
+ */
+#define VAL_GPIOG_MODER             (PIN_MODE_INPUT(GPIOG_PIN0) |           \
+                                     PIN_MODE_INPUT(GPIOG_PIN1) |           \
+                                     PIN_MODE_INPUT(GPIOG_PIN2) |           \
+                                     PIN_MODE_INPUT(GPIOG_PIN3) |           \
+                                     PIN_MODE_INPUT(GPIOG_PIN4) |           \
+                                     PIN_MODE_INPUT(GPIOG_PIN5) |           \
+                                     PIN_MODE_INPUT(GPIOG_PIN6) |           \
+                                     PIN_MODE_INPUT(GPIOG_PIN7) |           \
+                                     PIN_MODE_INPUT(GPIOG_PIN8) |           \
+                                     PIN_MODE_INPUT(GPIOG_PIN9) |           \
+                                     PIN_MODE_INPUT(GPIOG_PIN10) |          \
+                                     PIN_MODE_INPUT(GPIOG_PIN11) |          \
+                                     PIN_MODE_INPUT(GPIOG_PIN12) |          \
+                                     PIN_MODE_INPUT(GPIOG_PIN13) |          \
+                                     PIN_MODE_INPUT(GPIOG_PIN14) |          \
+                                     PIN_MODE_INPUT(GPIOG_PIN15))
+#define VAL_GPIOG_OTYPER            (PIN_OTYPE_PUSHPULL(GPIOG_PIN0) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOG_PIN1) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOG_PIN2) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOG_PIN3) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOG_PIN4) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOG_PIN5) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOG_PIN6) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOG_PIN7) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOG_PIN8) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOG_PIN9) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOG_PIN10) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOG_PIN11) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOG_PIN12) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOG_PIN13) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOG_PIN14) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOG_PIN15))
+#define VAL_GPIOG_OSPEEDR           (PIN_OSPEED_VERYLOW(GPIOG_PIN0) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOG_PIN1) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOG_PIN2) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOG_PIN3) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOG_PIN4) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOG_PIN5) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOG_PIN6) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOG_PIN7) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOG_PIN8) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOG_PIN9) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOG_PIN10) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOG_PIN11) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOG_PIN12) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOG_PIN13) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOG_PIN14) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOG_PIN15))
+#define VAL_GPIOG_PUPDR             (PIN_PUPDR_PULLUP(GPIOG_PIN0) |         \
+                                     PIN_PUPDR_PULLUP(GPIOG_PIN1) |         \
+                                     PIN_PUPDR_PULLUP(GPIOG_PIN2) |         \
+                                     PIN_PUPDR_PULLUP(GPIOG_PIN3) |         \
+                                     PIN_PUPDR_PULLUP(GPIOG_PIN4) |         \
+                                     PIN_PUPDR_PULLUP(GPIOG_PIN5) |         \
+                                     PIN_PUPDR_PULLUP(GPIOG_PIN6) |         \
+                                     PIN_PUPDR_PULLUP(GPIOG_PIN7) |         \
+                                     PIN_PUPDR_PULLUP(GPIOG_PIN8) |         \
+                                     PIN_PUPDR_PULLUP(GPIOG_PIN9) |         \
+                                     PIN_PUPDR_PULLUP(GPIOG_PIN10) |        \
+                                     PIN_PUPDR_PULLUP(GPIOG_PIN11) |        \
+                                     PIN_PUPDR_PULLUP(GPIOG_PIN12) |        \
+                                     PIN_PUPDR_PULLUP(GPIOG_PIN13) |        \
+                                     PIN_PUPDR_PULLUP(GPIOG_PIN14) |        \
+                                     PIN_PUPDR_PULLUP(GPIOG_PIN15))
+#define VAL_GPIOG_ODR               (PIN_ODR_HIGH(GPIOG_PIN0) |             \
+                                     PIN_ODR_HIGH(GPIOG_PIN1) |             \
+                                     PIN_ODR_HIGH(GPIOG_PIN2) |             \
+                                     PIN_ODR_HIGH(GPIOG_PIN3) |             \
+                                     PIN_ODR_HIGH(GPIOG_PIN4) |             \
+                                     PIN_ODR_HIGH(GPIOG_PIN5) |             \
+                                     PIN_ODR_HIGH(GPIOG_PIN6) |             \
+                                     PIN_ODR_HIGH(GPIOG_PIN7) |             \
+                                     PIN_ODR_HIGH(GPIOG_PIN8) |             \
+                                     PIN_ODR_HIGH(GPIOG_PIN9) |             \
+                                     PIN_ODR_HIGH(GPIOG_PIN10) |            \
+                                     PIN_ODR_HIGH(GPIOG_PIN11) |            \
+                                     PIN_ODR_HIGH(GPIOG_PIN12) |            \
+                                     PIN_ODR_HIGH(GPIOG_PIN13) |            \
+                                     PIN_ODR_HIGH(GPIOG_PIN14) |            \
+                                     PIN_ODR_HIGH(GPIOG_PIN15))
+#define VAL_GPIOG_AFRL              (PIN_AFIO_AF(GPIOG_PIN0, 0) |           \
+                                     PIN_AFIO_AF(GPIOG_PIN1, 0) |           \
+                                     PIN_AFIO_AF(GPIOG_PIN2, 0) |           \
+                                     PIN_AFIO_AF(GPIOG_PIN3, 0) |           \
+                                     PIN_AFIO_AF(GPIOG_PIN4, 0) |           \
+                                     PIN_AFIO_AF(GPIOG_PIN5, 0) |           \
+                                     PIN_AFIO_AF(GPIOG_PIN6, 0) |           \
+                                     PIN_AFIO_AF(GPIOG_PIN7, 0))
+#define VAL_GPIOG_AFRH              (PIN_AFIO_AF(GPIOG_PIN8, 0) |           \
+                                     PIN_AFIO_AF(GPIOG_PIN9, 0) |           \
+                                     PIN_AFIO_AF(GPIOG_PIN10, 0) |          \
+                                     PIN_AFIO_AF(GPIOG_PIN11, 0) |          \
+                                     PIN_AFIO_AF(GPIOG_PIN12, 0) |          \
+                                     PIN_AFIO_AF(GPIOG_PIN13, 0) |          \
+                                     PIN_AFIO_AF(GPIOG_PIN14, 0) |          \
+                                     PIN_AFIO_AF(GPIOG_PIN15, 0))
+
+/*
+ * GPIOH setup:
+ *
+ * PH0  - PIN0                      (input pullup).
+ * PH1  - PIN1                      (input pullup).
+ * PH2  - PIN2                      (input pullup).
+ * PH3  - PIN3                      (input pullup).
+ * PH4  - PIN4                      (input pullup).
+ * PH5  - PIN5                      (input pullup).
+ * PH6  - PIN6                      (input pullup).
+ * PH7  - PIN7                      (input pullup).
+ * PH8  - PIN8                      (input pullup).
+ * PH9  - PIN9                      (input pullup).
+ * PH10 - PIN10                     (input pullup).
+ * PH11 - PIN11                     (input pullup).
+ * PH12 - PIN12                     (input pullup).
+ * PH13 - PIN13                     (input pullup).
+ * PH14 - PIN14                     (input pullup).
+ * PH15 - PIN15                     (input pullup).
+ */
+#define VAL_GPIOH_MODER             (PIN_MODE_INPUT(GPIOH_PIN0) |           \
+                                     PIN_MODE_INPUT(GPIOH_PIN1) |           \
+                                     PIN_MODE_INPUT(GPIOH_PIN2) |           \
+                                     PIN_MODE_INPUT(GPIOH_PIN3) |           \
+                                     PIN_MODE_INPUT(GPIOH_PIN4) |           \
+                                     PIN_MODE_INPUT(GPIOH_PIN5) |           \
+                                     PIN_MODE_INPUT(GPIOH_PIN6) |           \
+                                     PIN_MODE_INPUT(GPIOH_PIN7) |           \
+                                     PIN_MODE_INPUT(GPIOH_PIN8) |           \
+                                     PIN_MODE_INPUT(GPIOH_PIN9) |           \
+                                     PIN_MODE_INPUT(GPIOH_PIN10) |          \
+                                     PIN_MODE_INPUT(GPIOH_PIN11) |          \
+                                     PIN_MODE_INPUT(GPIOH_PIN12) |          \
+                                     PIN_MODE_INPUT(GPIOH_PIN13) |          \
+                                     PIN_MODE_INPUT(GPIOH_PIN14) |          \
+                                     PIN_MODE_INPUT(GPIOH_PIN15))
+#define VAL_GPIOH_OTYPER            (PIN_OTYPE_PUSHPULL(GPIOH_PIN0) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOH_PIN1) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOH_PIN2) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOH_PIN3) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOH_PIN4) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOH_PIN5) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOH_PIN6) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOH_PIN7) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOH_PIN8) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOH_PIN9) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOH_PIN10) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOH_PIN11) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOH_PIN12) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOH_PIN13) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOH_PIN14) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOH_PIN15))
+#define VAL_GPIOH_OSPEEDR           (PIN_OSPEED_VERYLOW(GPIOH_PIN0) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOH_PIN1) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOH_PIN2) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOH_PIN3) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOH_PIN4) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOH_PIN5) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOH_PIN6) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOH_PIN7) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOH_PIN8) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOH_PIN9) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOH_PIN10) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOH_PIN11) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOH_PIN12) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOH_PIN13) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOH_PIN14) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOH_PIN15))
+#define VAL_GPIOH_PUPDR             (PIN_PUPDR_PULLUP(GPIOH_PIN0) |         \
+                                     PIN_PUPDR_PULLUP(GPIOH_PIN1) |         \
+                                     PIN_PUPDR_PULLUP(GPIOH_PIN2) |         \
+                                     PIN_PUPDR_PULLUP(GPIOH_PIN3) |         \
+                                     PIN_PUPDR_PULLUP(GPIOH_PIN4) |         \
+                                     PIN_PUPDR_PULLUP(GPIOH_PIN5) |         \
+                                     PIN_PUPDR_PULLUP(GPIOH_PIN6) |         \
+                                     PIN_PUPDR_PULLUP(GPIOH_PIN7) |         \
+                                     PIN_PUPDR_PULLUP(GPIOH_PIN8) |         \
+                                     PIN_PUPDR_PULLUP(GPIOH_PIN9) |         \
+                                     PIN_PUPDR_PULLUP(GPIOH_PIN10) |        \
+                                     PIN_PUPDR_PULLUP(GPIOH_PIN11) |        \
+                                     PIN_PUPDR_PULLUP(GPIOH_PIN12) |        \
+                                     PIN_PUPDR_PULLUP(GPIOH_PIN13) |        \
+                                     PIN_PUPDR_PULLUP(GPIOH_PIN14) |        \
+                                     PIN_PUPDR_PULLUP(GPIOH_PIN15))
+#define VAL_GPIOH_ODR               (PIN_ODR_HIGH(GPIOH_PIN0) |             \
+                                     PIN_ODR_HIGH(GPIOH_PIN1) |             \
+                                     PIN_ODR_HIGH(GPIOH_PIN2) |             \
+                                     PIN_ODR_HIGH(GPIOH_PIN3) |             \
+                                     PIN_ODR_HIGH(GPIOH_PIN4) |             \
+                                     PIN_ODR_HIGH(GPIOH_PIN5) |             \
+                                     PIN_ODR_HIGH(GPIOH_PIN6) |             \
+                                     PIN_ODR_HIGH(GPIOH_PIN7) |             \
+                                     PIN_ODR_HIGH(GPIOH_PIN8) |             \
+                                     PIN_ODR_HIGH(GPIOH_PIN9) |             \
+                                     PIN_ODR_HIGH(GPIOH_PIN10) |            \
+                                     PIN_ODR_HIGH(GPIOH_PIN11) |            \
+                                     PIN_ODR_HIGH(GPIOH_PIN12) |            \
+                                     PIN_ODR_HIGH(GPIOH_PIN13) |            \
+                                     PIN_ODR_HIGH(GPIOH_PIN14) |            \
+                                     PIN_ODR_HIGH(GPIOH_PIN15))
+#define VAL_GPIOH_AFRL              (PIN_AFIO_AF(GPIOH_PIN0, 0) |           \
+                                     PIN_AFIO_AF(GPIOH_PIN1, 0) |           \
+                                     PIN_AFIO_AF(GPIOH_PIN2, 0) |           \
+                                     PIN_AFIO_AF(GPIOH_PIN3, 0) |           \
+                                     PIN_AFIO_AF(GPIOH_PIN4, 0) |           \
+                                     PIN_AFIO_AF(GPIOH_PIN5, 0) |           \
+                                     PIN_AFIO_AF(GPIOH_PIN6, 0) |           \
+                                     PIN_AFIO_AF(GPIOH_PIN7, 0))
+#define VAL_GPIOH_AFRH              (PIN_AFIO_AF(GPIOH_PIN8, 0) |           \
+                                     PIN_AFIO_AF(GPIOH_PIN9, 0) |           \
+                                     PIN_AFIO_AF(GPIOH_PIN10, 0) |          \
+                                     PIN_AFIO_AF(GPIOH_PIN11, 0) |          \
+                                     PIN_AFIO_AF(GPIOH_PIN12, 0) |          \
+                                     PIN_AFIO_AF(GPIOH_PIN13, 0) |          \
+                                     PIN_AFIO_AF(GPIOH_PIN14, 0) |          \
+                                     PIN_AFIO_AF(GPIOH_PIN15, 0))
+
+
+/*
+ * USB bus activation macro, required by the USB driver.
+ */
+// #define usb_lld_connect_bus(usbp)
+#define usb_lld_connect_bus(usbp) (palSetPadMode(GPIOA, GPIOA_USB_DP, PAL_MODE_ALTERNATE(14)))
+// #define usb_lld_connect_bus(usbp) palSetPadMode(GPIOA, 12, PAL_MODE_INPUT)
+/*
+ * USB bus de-activation macro, required by the USB driver.
+ */
+// #define usb_lld_disconnect_bus(usbp)
+#define usb_lld_disconnect_bus(usbp) (palSetPadMode(GPIOA, GPIOA_USB_DP, PAL_MODE_OUTPUT_PUSHPULL)); palClearPad(GPIOA, GPIOA_USB_DP)
+// #define usb_lld_disconnect_bus(usbp) palSetPadMode(GPIOA, 12, PAL_MODE_OUTPUT_PUSHPULL); palClearPad(GPIOA, 12)
+
+#if !defined(_FROM_ASM_)
+#ifdef __cplusplus
+extern "C" {
+#endif
+  void boardInit(void);
+#ifdef __cplusplus
+}
+#endif
+#endif /* _FROM_ASM_ */
+
+#endif /* _BOARD_H_ */
diff --git a/drivers/boards/GENERIC_STM32_F303XC/board.mk b/drivers/boards/GENERIC_STM32_F303XC/board.mk
new file mode 100644
index 000000000..43377629a
--- /dev/null
+++ b/drivers/boards/GENERIC_STM32_F303XC/board.mk
@@ -0,0 +1,5 @@
+# List of all the board related files.
+BOARDSRC = $(BOARD_PATH)/boards/GENERIC_STM32_F303XC/board.c
+
+# Required include directories
+BOARDINC = $(BOARD_PATH)/boards/GENERIC_STM32_F303XC
diff --git a/drivers/boards/GENERIC_STM32_F303XC/bootloader_defs.h b/drivers/boards/GENERIC_STM32_F303XC/bootloader_defs.h
new file mode 100644
index 000000000..3b0e9d20a
--- /dev/null
+++ b/drivers/boards/GENERIC_STM32_F303XC/bootloader_defs.h
@@ -0,0 +1,7 @@
+/* Address for jumping to bootloader on STM32 chips. */
+/* It is chip dependent, the correct number can be looked up here:
+ * http://www.st.com/web/en/resource/technical/document/application_note/CD00167594.pdf
+ * This also requires a patch to chibios:
+ *  <tmk_dir>/tmk_core/tool/chibios/ch-bootloader-jump.patch
+ */
+#define STM32_BOOTLOADER_ADDRESS 0x1FFFD800