BBC micro:bit board

3 files changed, 243 insertions, 0 deletions

diff --git a/os/hal/boards/MICROBIT/board.c b/os/hal/boards/MICROBIT/board.c
new file mode 100644
index 0000000..12f78e2
--- /dev/null
+++ b/os/hal/boards/MICROBIT/board.c
@@ -0,0 +1,91 @@
+/*
+    Copyright (C) 2017 Stéphane D'Alu
+
+    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__)
+
+/* RAM Banks
+ *  (Values are defined in Nordic gcc_startup_nrf51.s)
+ */
+#define NRF_POWER_RAMON_ADDRESS 0x40000524
+#define NRF_POWER_RAMONB_ADDRESS 0x40000554
+#define NRF_POWER_RAMONx_RAMxON_ONMODE_Msk 0x3
+
+/**
+ * @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 =
+{
+    .pads = {
+        PAL_MODE_OUTPUT_OPENDRAIN,    /* P0.0 : SCL      P19   */
+        PAL_MODE_UNCONNECTED,         /* P0.1 : PAD1     P2    */
+        PAL_MODE_UNCONNECTED,         /* P0.2 : PAD2     P1    */
+        PAL_MODE_UNCONNECTED,         /* P0.3 : PAD3     P0    */
+        PAL_MODE_OUTPUT_PUSHPULL,     /* P0.4 : COL1     P3    */
+        PAL_MODE_OUTPUT_PUSHPULL,     /* P0.5 : COL2     P4    */
+        PAL_MODE_OUTPUT_PUSHPULL,     /* P0.6 : COL3     P10   */
+        PAL_MODE_OUTPUT_PUSHPULL,     /* P0.7 : COL4           */
+        PAL_MODE_OUTPUT_PUSHPULL,     /* P0.8 : COL5           */
+        PAL_MODE_OUTPUT_PUSHPULL,     /* P0.9 : COL6           */
+        PAL_MODE_OUTPUT_PUSHPULL,     /* P0.10: COL7     P9    */
+        PAL_MODE_OUTPUT_PUSHPULL,     /* P0.11: COL8     P7    */
+        PAL_MODE_OUTPUT_PUSHPULL,     /* P0.12: COL9     P6    */
+        PAL_MODE_OUTPUT_PUSHPULL,     /* P0.13: ROW1           */
+        PAL_MODE_OUTPUT_PUSHPULL,     /* P0.14: ROW2           */
+        PAL_MODE_OUTPUT_PUSHPULL,     /* P0.15: ROW3           */
+        PAL_MODE_UNCONNECTED,         /* P0.16           P16   */
+        PAL_MODE_INPUT,               /* P0.17: BTN_A    P5    */
+        PAL_MODE_UNCONNECTED,         /* P0.18           P8    */
+        PAL_MODE_INPUT,               /* P0.19: BTN_RST        */
+        PAL_MODE_UNCONNECTED,         /* P0.20           P12   */
+        PAL_MODE_OUTPUT_PUSHPULL,     /* P0.21: SPI_MOSI P15   */
+        PAL_MODE_INPUT_PULLUP,        /* P0.22: SPI_MISO P14   */
+        PAL_MODE_OUTPUT_PUSHPULL,     /* P0.23: SPI_SCK  P13   */
+        PAL_MODE_OUTPUT_PUSHPULL,     /* P0.24: UART_TX        */
+        PAL_MODE_INPUT_PULLUP,        /* P0.25: UART_RX        */
+        PAL_MODE_INPUT,               /* P0.26: BTN_B    P11   */
+        PAL_MODE_INPUT,               /* P0.27: ACC_INT2       */
+        PAL_MODE_INPUT,               /* P0.28: ACC_INT1       */
+        PAL_MODE_INPUT,               /* P0.29: MAG_INT1       */
+        PAL_MODE_OUTPUT_OPENDRAIN,    /* P0.30: SDA      P20   */
+        PAL_MODE_UNCONNECTED,         /* P0.31                 */
+  },
+};
+#endif
+
+/**
+ * @brief   Early initialization code.
+ * @details This initialization is performed just after reset before BSS and
+ *          DATA segments initialization.
+ */
+void __early_init(void)
+{
+  /* Make sure ALL RAM banks are powered on */
+  *(uint32_t *)NRF_POWER_RAMON_ADDRESS  |= NRF_POWER_RAMONx_RAMxON_ONMODE_Msk;
+  *(uint32_t *)NRF_POWER_RAMONB_ADDRESS |= NRF_POWER_RAMONx_RAMxON_ONMODE_Msk;
+}
+
+/**
+ * @brief   Late initialization code.
+ * @note    This initialization is performed after BSS and DATA segments
+ *          initialization and before invoking the main() function.
+ */
+void boardInit(void)
+{
+}
diff --git a/os/hal/boards/MICROBIT/board.h b/os/hal/boards/MICROBIT/board.h
new file mode 100644
index 0000000..7798634
--- /dev/null
+++ b/os/hal/boards/MICROBIT/board.h
@@ -0,0 +1,147 @@
+/*
+    Copyright (C) 2016 Stephane D'Alu
+
+    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_
+
+/*
+ * See: https://www.microbit.co.uk/device/pins
+ *      https://lancaster-university.github.io/microbit-docs/ubit/display/
+ */
+
+/* Board identifier. */
+#define BOARD_MICROBIT
+#define BOARD_NAME              "micro:bit"
+
+/* Board oscillators-related settings. */
+#define NRF51_XTAL_VALUE        16000000
+#define NRF51_LFCLK_SOURCE      0  /* RC oscillator */
+
+/*
+ * IO pins assignments.
+ */
+#define IOPORT1_P0              3U
+#define IOPORT1_P1              2U
+#define IOPORT1_P2              1U
+#define IOPORT1_P3              4U
+#define IOPORT1_P4              5U
+#define IOPORT1_P5             17U
+#define IOPORT1_P6             12U
+#define IOPORT1_P7             11U
+#define IOPORT1_P8             18U
+#define IOPORT1_P9             10U
+#define IOPORT1_P10             6U
+#define IOPORT1_P11            26U
+#define IOPORT1_P12            20U
+#define IOPORT1_P13            23U
+#define IOPORT1_P14            22U
+#define IOPORT1_P15            21U
+#define IOPORT1_P16            16U
+#define IOPORT1_P19             0U
+#define IOPORT1_P20            30U
+#define IOPORT1_BTN_A          17U
+#define IOPORT1_BTN_B          26U
+#define IOPORT1_BTN_RST        19U  
+#define IOPORT1_LED_COL_1       4U
+#define IOPORT1_LED_COL_2       5U
+#define IOPORT1_LED_COL_3       6U
+#define IOPORT1_LED_COL_4       7U
+#define IOPORT1_LED_COL_5       8U
+#define IOPORT1_LED_COL_6       9U
+#define IOPORT1_LED_COL_7      10U
+#define IOPORT1_LED_COL_8      11U
+#define IOPORT1_LED_COL_9      12U
+#define IOPORT1_LED_ROW_1      13U
+#define IOPORT1_LED_ROW_2      14U
+#define IOPORT1_LED_ROW_3      15U
+#define IOPORT1_PAD_1           1U
+#define IOPORT1_PAD_2           2U
+#define IOPORT1_PAD_3           3U
+#define IOPORT1_SPI_MOSI       21U
+#define IOPORT1_SPI_MISO       22U
+#define IOPORT1_SPI_SCK        23U
+#define IOPORT1_I2C_SCL         0U
+#define IOPORT1_I2C_SDA        30U
+#define IOPORT1_UART_TX        24U
+#define IOPORT1_UART_RX        25U
+#define IOPORT1_ACC_INT1       28U
+#define IOPORT1_ACC_INT2       27U
+#define IOPORT1_MAG_INT1       29U
+
+
+/*
+ * IO lines assignments.
+ */
+#define LINE_P0                PAL_LINE(IOPORT1, IOPORT1_P0)
+#define LINE_P1                PAL_LINE(IOPORT1, IOPORT1_P1)
+#define LINE_P2                PAL_LINE(IOPORT1, IOPORT1_P2)
+#define LINE_P3                PAL_LINE(IOPORT1, IOPORT1_P3)
+#define LINE_P4                PAL_LINE(IOPORT1, IOPORT1_P4)
+#define LINE_P5                PAL_LINE(IOPORT1, IOPORT1_P5)
+#define LINE_P6                PAL_LINE(IOPORT1, IOPORT1_P6)
+#define LINE_P7                PAL_LINE(IOPORT1, IOPORT1_P7)
+#define LINE_P8                PAL_LINE(IOPORT1, IOPORT1_P8)
+#define LINE_P9                PAL_LINE(IOPORT1, IOPORT1_P9)
+#define LINE_P10               PAL_LINE(IOPORT1, IOPORT1_P10)
+#define LINE_P11               PAL_LINE(IOPORT1, IOPORT1_P11)
+#define LINE_P12               PAL_LINE(IOPORT1, IOPORT1_P12)
+#define LINE_P13               PAL_LINE(IOPORT1, IOPORT1_P13)
+#define LINE_P14               PAL_LINE(IOPORT1, IOPORT1_P14)
+#define LINE_P15               PAL_LINE(IOPORT1, IOPORT1_P15)
+#define LINE_P16               PAL_LINE(IOPORT1, IOPORT1_P16)
+#define LINE_P19               PAL_LINE(IOPORT1, IOPORT1_P19)
+#define LINE_P20               PAL_LINE(IOPORT1, IOPORT1_P20)
+#define LINE_BTN_A             PAL_LINE(IOPORT1, IOPORT1_BTN_A)
+#define LINE_BTN_B             PAL_LINE(IOPORT1, IOPORT1_BTN_B)
+#define LINE_BTN_RST           PAL_LINE(IOPORT1, IOPORT1_BTN_RST)
+#define LINE_LED_COL_1         PAL_LINE(IOPORT1, IOPORT1_LED_COL_1)
+#define LINE_LED_COL_2         PAL_LINE(IOPORT1, IOPORT1_LED_COL_2)
+#define LINE_LED_COL_3         PAL_LINE(IOPORT1, IOPORT1_LED_COL_3)
+#define LINE_LED_COL_4         PAL_LINE(IOPORT1, IOPORT1_LED_COL_4)
+#define LINE_LED_COL_5         PAL_LINE(IOPORT1, IOPORT1_LED_COL_5)
+#define LINE_LED_COL_6         PAL_LINE(IOPORT1, IOPORT1_LED_COL_6)
+#define LINE_LED_COL_7         PAL_LINE(IOPORT1, IOPORT1_LED_COL_7)
+#define LINE_LED_COL_8         PAL_LINE(IOPORT1, IOPORT1_LED_COL_8)
+#define LINE_LED_COL_9         PAL_LINE(IOPORT1, IOPORT1_LED_COL_9)
+#define LINE_LED_ROW_1         PAL_LINE(IOPORT1, IOPORT1_LED_ROW_1)
+#define LINE_LED_ROW_2         PAL_LINE(IOPORT1, IOPORT1_LED_ROW_2)
+#define LINE_LED_ROW_3         PAL_LINE(IOPORT1, IOPORT1_LED_ROW_3)
+#define LINE_PAD_1             PAL_LINE(IOPORT1, IOPORT1_PAD_1)
+#define LINE_PAD_2             PAL_LINE(IOPORT1, IOPORT1_PAD_2)
+#define LINE_PAD_3             PAL_LINE(IOPORT1, IOPORT1_PAD_3)
+#define LINE_SPI_MOSI          PAL_LINE(IOPORT1, IOPORT1_SPI_MOSI)
+#define LINE_SPI_MISO          PAL_LINE(IOPORT1, IOPORT1_SPI_MISO)
+#define LINE_SPI_SCK           PAL_LINE(IOPORT1, IOPORT1_SPI_SCK)
+#define LINE_I2C_SCL           PAL_LINE(IOPORT1, IOPORT1_I2C_SCL)
+#define LINE_I2C_SDA           PAL_LINE(IOPORT1, IOPORT1_I2C_SDA)
+#define LINE_UART_TX           PAL_LINE(IOPORT1, IOPORT1_UART_TX)
+#define LINE_UART_RX           PAL_LINE(IOPORT1, IOPORT1_UART_RX)
+#define LINE_ACC_INT1          PAL_LINE(IOPORT1, IOPORT1_ACC_INT1)
+#define LINE_ACC_INT2          PAL_LINE(IOPORT1, IOPORT1_ACC_INT2)
+#define LINE_MAG_INT1          PAL_LINE(IOPORT1, IOPORT1_MAG_INT1)
+
+
+#if !defined(_FROM_ASM_)
+#ifdef __cplusplus
+extern "C" {
+#endif
+  void boardInit(void);
+#ifdef __cplusplus
+}
+#endif
+#endif /* _FROM_ASM_ */
+
+#endif /* _BOARD_H_ */
diff --git a/os/hal/boards/MICROBIT/board.mk b/os/hal/boards/MICROBIT/board.mk
new file mode 100644
index 0000000..3595b1a
--- /dev/null
+++ b/os/hal/boards/MICROBIT/board.mk
@@ -0,0 +1,5 @@
+# List of all the board related files.
+BOARDSRC = ${CHIBIOS_CONTRIB}/os/hal/boards/MICROBIT/board.c
+
+# Required include directories
+BOARDINC = ${CHIBIOS_CONTRIB}/os/hal/boards/MICROBIT