diff options
Diffstat (limited to 'os')
-rw-r--r-- | os/io/platforms/STM32/spi_lld.c | 86 | ||||
-rw-r--r-- | os/io/platforms/STM32/spi_lld.h | 112 | ||||
-rw-r--r-- | os/io/spi.c | 20 | ||||
-rw-r--r-- | os/io/templates/spi_lld.c | 55 | ||||
-rw-r--r-- | os/io/templates/spi_lld.h | 2 |
5 files changed, 257 insertions, 18 deletions
diff --git a/os/io/platforms/STM32/spi_lld.c b/os/io/platforms/STM32/spi_lld.c new file mode 100644 index 000000000..4ef99e1ed --- /dev/null +++ b/os/io/platforms/STM32/spi_lld.c @@ -0,0 +1,86 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file templates/spi_lld.c
+ * @brief SPI Driver subsystem low level driver source template
+ * @addtogroup SPI_LLD
+ * @{
+ */
+
+#include <ch.h>
+#include <spi.h>
+
+/**
+ * @brief Low level SPI driver initialization. + */
+void spi_lld_init(void) {
+
+}
+
+/**
+ * @brief Low level SPI bus setup.
+ * + * @param[in] spip pointer to the @p SPIDriver object
+ */
+void spi_lld_setup(SPIDriver *spip) {
+
+}
+
+/**
+ * @brief Asserts the chip select signal and prepares for transfers.
+ *
+ * @param[in] spip pointer to the @p SPIDriver object
+ */
+void spi_lld_select(SPIDriver *spip) {
+
+}
+
+/**
+ * @brief De-asserts the chip select signal.
+ * @details The previously selected peripheral is unselected.
+ *
+ * @param[in] spip pointer to the @p SPIDriver object
+ */
+void spi_lld_unselect(SPIDriver *spip) {
+
+}
+
+/**
+ * @brief Exchanges data on the SPI bus.
+ * @details This function performs a simultaneous transmit/receive operation.
+ *
+ * @param[in] spip pointer to the @p SPIDriver object
+ * @param n number of words to be exchanged
+ * @param rxbuf the pointer to the receive buffer, if @p NULL is specified then
+ * the input data is discarded.
+ * Note that the buffer is organized as an uint8_t array for
+ * data sizes below or equal to 8 bits else it is organized as
+ * an uint16_t array.
+ * @param txbuf the pointer to the transmit buffer, if @p NULL is specified all
+ * ones are transmitted.
+ * Note that the buffer is organized as an uint8_t array for
+ * data sizes below or equal to 8 bits else it is organized as
+ * an uint16_t array.
+ */
+void spi_lld_exchange(SPIDriver *spip, size_t n, void *rxbuf, void *txbuf) {
+
+}
+
+/** @} */
diff --git a/os/io/platforms/STM32/spi_lld.h b/os/io/platforms/STM32/spi_lld.h new file mode 100644 index 000000000..26a70d0a4 --- /dev/null +++ b/os/io/platforms/STM32/spi_lld.h @@ -0,0 +1,112 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file templates/spi_lld.h
+ * @brief SPI Driver subsystem low level driver header template
+ * @addtogroup SPI_LLD
+ * @{
+ */
+
+#ifndef _SPI_LLD_H_
+#define _SPI_LLD_H_
+
+/*===========================================================================*/
+/* Driver pre-compile time settings. */
+/*===========================================================================*/
+
+/**
+ * @brief Enables the mutual exclusion APIs on the SPI bus. + */
+#if !defined(SPI_USE_MUTUAL_EXCLUSION) || defined(__DOXYGEN__)
+#define SPI_USE_MUTUAL_EXCLUSION TRUE
+#endif
+
+#if SPI_USE_MUTUAL_EXCLUSION && !CH_USE_MUTEXES && !CH_USE_SEMAPHORES
+#error "SPI_USE_MUTUAL_EXCLUSION requires CH_USE_MUTEXES and/or CH_USE_SEMAPHORES"
+#endif
+
+/*===========================================================================*/
+/* Driver data structures and types. */
+/*===========================================================================*/
+
+/**
+ * @brief Driver state machine possible states. + */
+typedef enum {
+ SPI_UNINIT = 0,//!< SPI_UNINIT
+ SPI_IDLE = 1, //!< SPI_IDLE
+ SPI_ACTIVE = 2 //!< SPI_ACTIVE
+} spistate_t;
+
+/**
+ * @brief Driver configuration structure. + */
+typedef struct {
+ /**
+ * @brief Clock pulses to be generated after initialization.
+ */
+ cnt_t spc_clkpulses;
+ /* End of the mandatory fields.*/
+} SPIConfig;
+
+/**
+ * @brief Structure representing a MAC driver.
+ */
+typedef struct {
+ /**
+ * @brief Driver state. + */
+ spistate_t spd_state;
+#if SPI_USE_MUTUAL_EXCLUSION || defined(__DOXYGEN__)
+#if CH_USE_MUTEXES || defined(__DOXYGEN__)
+ /**
+ * @brief Mutex protecting the bus.
+ */
+ Mutex spd_mutex;
+#elif CH_USE_SEMAPHORES
+ Semaphore spd_semaphore;
+#endif
+#endif /* SPI_USE_MUTUAL_EXCLUSION */
+ /**
+ * Current configuration data.
+ */
+ const SPIConfig *spd_config;
+ /* End of the mandatory fields.*/
+} SPIDriver;
+
+/*===========================================================================*/
+/* External declarations. */
+/*===========================================================================*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void spi_lld_init(void);
+ void spi_lld_setup(SPIDriver *spip);
+ void spi_lld_select(SPIDriver *spip);
+ void spi_lld_unselect(SPIDriver *spip);
+ void spi_lld_exchange(SPIDriver *spip, size_t n, void *rxbuf, void *txbuf);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SPI_LLD_H_ */
+
+/** @} */
diff --git a/os/io/spi.c b/os/io/spi.c index 7060c693d..2ea8f8909 100644 --- a/os/io/spi.c +++ b/os/io/spi.c @@ -27,17 +27,6 @@ #include <ch.h>
#include <spi.h>
-/*
- * The following macros are used to enforce a correct sequence of operations
- * when the OS asserts are enabled. The overhead is removed when not in debug
- * mode. - */
-#ifdef CH_DBG_ENABLE_ASSERTS
-#define SPI_SET_STATE(spip, sts) (spip)->spd_state = (sts)
-#else
-#define SPI_SET_STATE(spip, sts)
-#endif
-
/**
* @brief SPI Driver initialization.
*/
@@ -53,7 +42,7 @@ void spiInit(void) { */
void spiObjectInit(SPIDriver *spip) {
- SPI_SET_STATE(spip, SPI_IDLE);
+ spip->spd_state = SPI_IDLE;
#if CH_USE_MUTEXES
chMtxInit(&spip->spd_mutex);
#elif CH_USE_SEMAPHORES
@@ -80,10 +69,8 @@ void spiSetup(SPIDriver *spip, const SPIConfig *config) { /**
* @brief Asserts the chip select signal and prepares for transfers.
- * @details The SPI bus is configured and a peripheral selected.
* * @param[in] spip pointer to the @p SPIDriver object
- * @param config pointer to the @p SPIConfig object */
void spiSelect(SPIDriver *spip) {
@@ -94,7 +81,7 @@ void spiSelect(SPIDriver *spip) { "not idle");
spi_lld_select(spip);
- SPI_SET_STATE(spip, SPI_ACTIVE);
+ spip->spd_state = SPI_ACTIVE;
chSysUnlock();
}
@@ -113,7 +100,7 @@ void spiUnselect(SPIDriver *spip) { "not locked");
spi_lld_unselect(spip);
- SPI_SET_STATE(spip, SPI_IDLE);
+ spip->spd_state = SPI_IDLE;
chSysUnlock();
}
@@ -174,6 +161,7 @@ void spiAcquireBus(SPIDriver *spip) { void spiReleaseBus(SPIDriver *spip) {
#if CH_USE_MUTEXES
+ (void)spip;
chMtxUnlock();
#elif CH_USE_SEMAPHORES
chSemSignal(&spip->spd_semaphore);
diff --git a/os/io/templates/spi_lld.c b/os/io/templates/spi_lld.c index 172edbc07..4ef99e1ed 100644 --- a/os/io/templates/spi_lld.c +++ b/os/io/templates/spi_lld.c @@ -27,5 +27,60 @@ #include <ch.h>
#include <spi.h>
+/**
+ * @brief Low level SPI driver initialization. + */
+void spi_lld_init(void) {
+
+}
+
+/**
+ * @brief Low level SPI bus setup.
+ * + * @param[in] spip pointer to the @p SPIDriver object
+ */
+void spi_lld_setup(SPIDriver *spip) {
+
+}
+
+/**
+ * @brief Asserts the chip select signal and prepares for transfers.
+ *
+ * @param[in] spip pointer to the @p SPIDriver object
+ */
+void spi_lld_select(SPIDriver *spip) {
+
+}
+
+/**
+ * @brief De-asserts the chip select signal.
+ * @details The previously selected peripheral is unselected.
+ *
+ * @param[in] spip pointer to the @p SPIDriver object
+ */
+void spi_lld_unselect(SPIDriver *spip) {
+
+}
+
+/**
+ * @brief Exchanges data on the SPI bus.
+ * @details This function performs a simultaneous transmit/receive operation.
+ *
+ * @param[in] spip pointer to the @p SPIDriver object
+ * @param n number of words to be exchanged
+ * @param rxbuf the pointer to the receive buffer, if @p NULL is specified then
+ * the input data is discarded.
+ * Note that the buffer is organized as an uint8_t array for
+ * data sizes below or equal to 8 bits else it is organized as
+ * an uint16_t array.
+ * @param txbuf the pointer to the transmit buffer, if @p NULL is specified all
+ * ones are transmitted.
+ * Note that the buffer is organized as an uint8_t array for
+ * data sizes below or equal to 8 bits else it is organized as
+ * an uint16_t array.
+ */
+void spi_lld_exchange(SPIDriver *spip, size_t n, void *rxbuf, void *txbuf) {
+
+}
/** @} */
diff --git a/os/io/templates/spi_lld.h b/os/io/templates/spi_lld.h index 8b17ace1a..26a70d0a4 100644 --- a/os/io/templates/spi_lld.h +++ b/os/io/templates/spi_lld.h @@ -70,12 +70,10 @@ typedef struct { * @brief Structure representing a MAC driver.
*/
typedef struct {
-#if CH_DBG_ENABLE_ASSERTS || defined(__DOXYGEN__)
/**
* @brief Driver state. */
spistate_t spd_state;
-#endif /* CH_DBG_ENABLE_ASSERTS */
#if SPI_USE_MUTUAL_EXCLUSION || defined(__DOXYGEN__)
#if CH_USE_MUTEXES || defined(__DOXYGEN__)
/**
|