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| author | Fabio Utzig <utzig@utzig.org> | 2015-05-15 20:44:03 -0300 |
|---|---|---|
| committer | Fabio Utzig <utzig@utzig.org> | 2015-05-15 20:44:03 -0300 |
| commit | 4ac0b638b92db47625d729b938e71b262dadbb43 (patch) | |
| tree | 4c10f74b19044b1ed2faefc2c3aa72de3bcd57a0 /os/hal/ports | |
| parent | aa43fd6554c1d35360c857a1b5d5fddcf1577a32 (diff) | |
| download | ChibiOS-Contrib-4ac0b638b92db47625d729b938e71b262dadbb43.tar.gz ChibiOS-Contrib-4ac0b638b92db47625d729b938e71b262dadbb43.tar.bz2 ChibiOS-Contrib-4ac0b638b92db47625d729b938e71b262dadbb43.zip | |
Add basic PAL driver
Diffstat (limited to 'os/hal/ports')
| -rw-r--r-- | os/hal/ports/NRF51/NRF51822/pal_lld.c | 129 | ||||
| -rw-r--r-- | os/hal/ports/NRF51/NRF51822/pal_lld.h | 373 | ||||
| -rw-r--r-- | os/hal/ports/NRF51/NRF51822/platform.mk | 1 |
3 files changed, 503 insertions, 0 deletions
diff --git a/os/hal/ports/NRF51/NRF51822/pal_lld.c b/os/hal/ports/NRF51/NRF51822/pal_lld.c new file mode 100644 index 0000000..ccbe20e --- /dev/null +++ b/os/hal/ports/NRF51/NRF51822/pal_lld.c @@ -0,0 +1,129 @@ +/*
+ Copyright (C) 2015 Fabio Utzig
+
+ 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.
+*/
+
+/**
+ * @file pal_lld.c
+ * @brief NRF51822 PAL subsystem low level driver source.
+ *
+ * @addtogroup PAL
+ * @{
+ */
+
+#include "osal.h"
+#include "hal.h"
+
+#if (HAL_USE_PAL == TRUE) || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables and types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+void _pal_lld_setpadmode(uint8_t pad, iomode_t mode)
+{
+ uint8_t value = 0;
+
+ osalDbgAssert(pad < 32, "invalid pad");
+
+ switch (mode) {
+ case PAL_MODE_RESET:
+ case PAL_MODE_UNCONNECTED:
+ value = 2;
+ break;
+ case PAL_MODE_INPUT:
+ case PAL_MODE_INPUT_ANALOG:
+ value = 0;
+ break;
+ case PAL_MODE_INPUT_PULLUP:
+ value = 0xC;
+ break;
+ case PAL_MODE_INPUT_PULLDOWN:
+ value = 4;
+ break;
+ case PAL_MODE_OUTPUT_PUSHPULL:
+ value = 1;
+ break;
+ case PAL_MODE_OUTPUT_OPENDRAIN:
+ value = 0x61;
+ break;
+ }
+
+ NRF_GPIO->PIN_CNF[pad] = value;
+}
+
+/*===========================================================================*/
+/* Driver interrupt handlers. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions. */
+/*===========================================================================*/
+
+/**
+ * @brief STM32 I/O ports configuration.
+ * @details Ports A-D(E, F, G, H) clocks enabled.
+ *
+ * @param[in] config the STM32 ports configuration
+ *
+ * @notapi
+ */
+void _pal_lld_init(const PALConfig *config)
+{
+ uint8_t i;
+
+ for (i = 0; i < TOTAL_GPIO_PADS; i++) {
+ pal_lld_setpadmode(IOPORT1, i, config->pads[i]);
+ }
+}
+
+/**
+ * @brief Pads mode setup.
+ * @details This function programs a pads group belonging to the same port
+ * with the specified mode.
+ *
+ * @param[in] port the port identifier
+ * @param[in] mask the group mask
+ * @param[in] mode the mode
+ *
+ * @notapi
+ */
+void _pal_lld_setgroupmode(ioportid_t port,
+ ioportmask_t mask,
+ iomode_t mode)
+{
+ uint8_t i;
+
+ (void)mask;
+
+ for (i = 0; i < TOTAL_GPIO_PADS; i++) {
+ pal_lld_setpadmode(port, i, mode);
+ }
+}
+
+#endif /* HAL_USE_PAL == TRUE */
+
+/** @} */
diff --git a/os/hal/ports/NRF51/NRF51822/pal_lld.h b/os/hal/ports/NRF51/NRF51822/pal_lld.h new file mode 100644 index 0000000..2383cfe --- /dev/null +++ b/os/hal/ports/NRF51/NRF51822/pal_lld.h @@ -0,0 +1,373 @@ +/*
+ Copyright (C) 2015 Fabio Utzig
+
+ 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.
+*/
+
+/**
+ * @file pal_lld.h
+ * @brief NRF51822 PAL subsystem low level driver header.
+ *
+ * @addtogroup PAL
+ * @{
+ */
+
+#ifndef _PAL_LLD_H_
+#define _PAL_LLD_H_
+
+#if (HAL_USE_PAL == TRUE) || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Unsupported modes and specific modes */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* I/O Ports Types and constants. */
+/*===========================================================================*/
+
+#define TOTAL_GPIO_PADS 32
+
+/**
+ * @brief Generic I/O ports static initializer.
+ * @details An instance of this structure must be passed to @p palInit() at
+ * system startup time in order to initialized the digital I/O
+ * subsystem. This represents only the initial setup, specific pads
+ * or whole ports can be reprogrammed at later time.
+ * @note Implementations may extend this structure to contain more,
+ * architecture dependent, fields.
+ */
+typedef struct {
+ uint32_t pads[TOTAL_GPIO_PADS];
+} PALConfig;
+
+/**
+ * @brief Width, in bits, of an I/O port.
+ */
+#define PAL_IOPORTS_WIDTH 32U
+
+/**
+ * @brief Whole port mask.
+ * @brief This macro specifies all the valid bits into a port.
+ */
+#define PAL_WHOLE_PORT ((ioportmask_t)0xFFFFFFFFU)
+
+/**
+ * @brief Digital I/O port sized unsigned type.
+ */
+typedef uint32_t ioportmask_t;
+
+/**
+ * @brief Digital I/O modes.
+ */
+typedef uint32_t iomode_t;
+
+/**
+ * @brief Port Identifier.
+ * @details This type can be a scalar or some kind of pointer, do not make
+ * any assumption about it, use the provided macros when populating
+ * variables of this type.
+ */
+typedef uint32_t ioportid_t;
+
+/*===========================================================================*/
+/* I/O Ports Identifiers. */
+/*===========================================================================*/
+
+/**
+ * @brief First I/O port identifier.
+ * @details Low level drivers can define multiple ports, it is suggested to
+ * use this naming convention.
+ */
+#define IOPORT1 NRF_GPIO
+
+/*===========================================================================*/
+/* Implementation, some of the following macros could be implemented as */
+/* functions, if so please put them in pal_lld.c. */
+/*===========================================================================*/
+
+void _pal_lld_setpadmode(uint8_t pad, iomode_t mode);
+
+/**
+ * @brief Low level PAL subsystem initialization.
+ *
+ * @param[in] config architecture-dependent ports configuration
+ *
+ * @notapi
+ */
+#define pal_lld_init(config) _pal_lld_init(config)
+
+/**
+ * @brief Reads the physical I/O port states.
+ *
+ * @param[in] port port identifier
+ * @return The port bits.
+ *
+ * @notapi
+ */
+#define pal_lld_readport(port) 0U
+
+/**
+ * @brief Reads the output latch.
+ * @details The purpose of this function is to read back the latched output
+ * value.
+ *
+ * @param[in] port port identifier
+ * @return The latched logical states.
+ *
+ * @notapi
+ */
+#define pal_lld_readlatch(port) 0U
+
+/**
+ * @brief Writes a bits mask on a I/O port.
+ *
+ * @param[in] port port identifier
+ * @param[in] bits bits to be written on the specified port
+ *
+ * @notapi
+ */
+#define pal_lld_writeport(port, bits) \
+ do { \
+ (void)port; \
+ (void)bits; \
+ } while (false)
+
+
+/**
+ * @brief Sets a bits mask on a I/O port.
+ * @note The @ref PAL provides a default software implementation of this
+ * functionality, implement this function if can optimize it by using
+ * special hardware functionalities or special coding.
+ *
+ * @param[in] port port identifier
+ * @param[in] bits bits to be ORed on the specified port
+ *
+ * @notapi
+ */
+#define pal_lld_setport(port, bits) \
+ do { \
+ (void)port; \
+ (void)bits; \
+ } while (false)
+
+
+/**
+ * @brief Clears a bits mask on a I/O port.
+ * @note The @ref PAL provides a default software implementation of this
+ * functionality, implement this function if can optimize it by using
+ * special hardware functionalities or special coding.
+ *
+ * @param[in] port port identifier
+ * @param[in] bits bits to be cleared on the specified port
+ *
+ * @notapi
+ */
+#define pal_lld_clearport(port, bits) \
+ do { \
+ (void)port; \
+ (void)bits; \
+ } while (false)
+
+
+/**
+ * @brief Toggles a bits mask on a I/O port.
+ * @note The @ref PAL provides a default software implementation of this
+ * functionality, implement this function if can optimize it by using
+ * special hardware functionalities or special coding.
+ *
+ * @param[in] port port identifier
+ * @param[in] bits bits to be XORed on the specified port
+ *
+ * @notapi
+ */
+#define pal_lld_toggleport(port, bits) \
+ do { \
+ (void)port; \
+ (void)bits; \
+ } while (false)
+
+
+/**
+ * @brief Reads a group of bits.
+ * @note The @ref PAL provides a default software implementation of this
+ * functionality, implement this function if can optimize it by using
+ * special hardware functionalities or special coding.
+ *
+ * @param[in] port port identifier
+ * @param[in] mask group mask
+ * @param[in] offset group bit offset within the port
+ * @return The group logical states.
+ *
+ * @notapi
+ */
+#define pal_lld_readgroup(port, mask, offset) 0U
+
+/**
+ * @brief Writes a group of bits.
+ * @note The @ref PAL provides a default software implementation of this
+ * functionality, implement this function if can optimize it by using
+ * special hardware functionalities or special coding.
+ *
+ * @param[in] port port identifier
+ * @param[in] mask group mask
+ * @param[in] offset group bit offset within the port
+ * @param[in] bits bits to be written. Values exceeding the group width
+ * are masked.
+ *
+ * @notapi
+ */
+#define pal_lld_writegroup(port, mask, offset, bits) \
+ do { \
+ (void)port; \
+ (void)mask; \
+ (void)offset; \
+ (void)bits; \
+ } while (false)
+
+/**
+ * @brief Pads group mode setup.
+ * @details This function programs a pads group belonging to the same port
+ * with the specified mode.
+ * @note Programming an unknown or unsupported mode is silently ignored.
+ *
+ * @param[in] port port identifier
+ * @param[in] mask group mask
+ * @param[in] offset group bit offset within the port
+ * @param[in] mode group mode
+ *
+ * @notapi
+ */
+#define pal_lld_setgroupmode(port, mask, offset, mode) \
+ _pal_lld_setgroupmode(port, mask << offset, mode)
+
+/**
+ * @brief Reads a logical state from an I/O pad.
+ * @note The @ref PAL provides a default software implementation of this
+ * functionality, implement this function if can optimize it by using
+ * special hardware functionalities or special coding.
+ *
+ * @param[in] port port identifier
+ * @param[in] pad pad number within the port
+ * @return The logical state.
+ * @retval PAL_LOW low logical state.
+ * @retval PAL_HIGH high logical state.
+ *
+ * @notapi
+ */
+#define pal_lld_readpad(port, pad) PAL_LOW
+
+/**
+ * @brief Writes a logical state on an output pad.
+ * @note This function is not meant to be invoked directly by the
+ * application code.
+ * @note The @ref PAL provides a default software implementation of this
+ * functionality, implement this function if can optimize it by using
+ * special hardware functionalities or special coding.
+ *
+ * @param[in] port port identifier
+ * @param[in] pad pad number within the port
+ * @param[in] bit logical value, the value must be @p PAL_LOW or
+ * @p PAL_HIGH
+ *
+ * @notapi
+ */
+#define pal_lld_writepad(port, pad, bit) \
+ do { \
+ (void)port; \
+ (void)pad; \
+ (void)bit; \
+ } while (false)
+
+/**
+ * @brief Sets a pad logical state to @p PAL_HIGH.
+ * @note The @ref PAL provides a default software implementation of this
+ * functionality, implement this function if can optimize it by using
+ * special hardware functionalities or special coding.
+ *
+ * @param[in] port port identifier
+ * @param[in] pad pad number within the port
+ *
+ * @notapi
+ */
+#define pal_lld_setpad(port, pad) (NRF_GPIO->OUTSET = (uint32_t) 1 << (pad))
+
+/**
+ * @brief Clears a pad logical state to @p PAL_LOW.
+ * @note The @ref PAL provides a default software implementation of this
+ * functionality, implement this function if can optimize it by using
+ * special hardware functionalities or special coding.
+ *
+ * @param[in] port port identifier
+ * @param[in] pad pad number within the port
+ *
+ * @notapi
+ */
+#define pal_lld_clearpad(port, pad) (NRF_GPIO->OUTCLR = (uint32_t) 1 << (pad))
+
+/**
+ * @brief Toggles a pad logical state.
+ * @note The @ref PAL provides a default software implementation of this
+ * functionality, implement this function if can optimize it by using
+ * special hardware functionalities or special coding.
+ *
+ * @param[in] port port identifier
+ * @param[in] pad pad number within the port
+ *
+ * @notapi
+ */
+#define pal_lld_togglepad(port, pad) \
+ do { \
+ uint8_t bit = (NRF_GPIO->IN >> (pad)) & 1; \
+ if (bit) \
+ NRF_GPIO->OUTCLR = 1 << (pad); \
+ else \
+ NRF_GPIO->OUTSET = 1 << (pad); \
+ } while (0)
+
+
+/**
+ * @brief Pad mode setup.
+ * @details This function programs a pad with the specified mode.
+ * @note The @ref PAL provides a default software implementation of this
+ * functionality, implement this function if can optimize it by using
+ * special hardware functionalities or special coding.
+ * @note Programming an unknown or unsupported mode is silently ignored.
+ *
+ * @param[in] port port identifier
+ * @param[in] pad pad number within the port
+ * @param[in] mode pad mode
+ *
+ * @notapi
+ */
+#define pal_lld_setpadmode(port, pad, mode) _pal_lld_setpadmode(pad, mode)
+
+#if !defined(__DOXYGEN__)
+extern const PALConfig pal_default_config;
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void _pal_lld_init(const PALConfig *config);
+ void _pal_lld_setgroupmode(ioportid_t port,
+ ioportmask_t mask,
+ iomode_t mode);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HAL_USE_PAL == TRUE */
+
+#endif /* _PAL_LLD_H_ */
+
+/** @} */
diff --git a/os/hal/ports/NRF51/NRF51822/platform.mk b/os/hal/ports/NRF51/NRF51822/platform.mk index c905684..10aad23 100644 --- a/os/hal/ports/NRF51/NRF51822/platform.mk +++ b/os/hal/ports/NRF51/NRF51822/platform.mk @@ -1,6 +1,7 @@ # List of all the NRF51x platform files. PLATFORMSRC = ${CHIBIOS}/os/hal/ports/common/ARMCMx/nvic.c \ ${CHIBIOS}/community/os/hal/ports/NRF51/NRF51822/hal_lld.c \ + ${CHIBIOS}/community/os/hal/ports/NRF51/NRF51822/pal_lld.c \ ${CHIBIOS}/community/os/hal/ports/NRF51/NRF51822/serial_lld.c \ ${CHIBIOS}/community/os/hal/ports/NRF51/NRF51822/st_lld.c |