diff options
Diffstat (limited to 'os/hal/src/spi.c')
| -rw-r--r-- | os/hal/src/spi.c | 262 |
1 files changed, 0 insertions, 262 deletions
diff --git a/os/hal/src/spi.c b/os/hal/src/spi.c deleted file mode 100644 index 8b8ea6f32..000000000 --- a/os/hal/src/spi.c +++ /dev/null @@ -1,262 +0,0 @@ -/*
- 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 spi.c
- * @brief SPI Driver code.
- * @addtogroup SPI
- * @{
- */
-
-#include "ch.h"
-#include "hal.h"
-
-#if CH_HAL_USE_SPI
-
-/**
- * @brief SPI Driver initialization.
- */
-void spiInit(void) {
-
- spi_lld_init();
-}
-
-/**
- * @brief Initializes the standard part of a @p SPIDriver structure.
- *
- * @param[in] spip pointer to the @p SPIDriver object
- */
-void spiObjectInit(SPIDriver *spip) {
-
- spip->spd_state = SPI_STOP;
-#if CH_USE_MUTEXES
- chMtxInit(&spip->spd_mutex);
-#elif CH_USE_SEMAPHORES
- chSemInit(&spip->spd_semaphore, 1);
-#endif
- spip->spd_config = NULL;
-}
-
-/**
- * @brief Configures and activates the SPI peripheral.
- *
- * @param[in] spip pointer to the @p SPIDriver object
- * @param[in] config pointer to the @p SPIConfig object
- */
-void spiStart(SPIDriver *spip, const SPIConfig *config) {
-
- chDbgCheck((spip != NULL) && (config != NULL), "spiStart");
-
- chSysLock();
- chDbgAssert((spip->spd_state == SPI_STOP) || (spip->spd_state == SPI_READY),
- "spiStart(), #1",
- "invalid state");
- spip->spd_config = config;
- spi_lld_start(spip);
- spip->spd_state = SPI_READY;
- chSysUnlock();
-}
-
-/**
- * @brief Deactivates the SPI peripheral.
- *
- * @param[in] spip pointer to the @p SPIDriver object
- */
-void spiStop(SPIDriver *spip) {
-
- chDbgCheck(spip != NULL, "spiStop");
-
- chSysLock();
- chDbgAssert((spip->spd_state == SPI_STOP) || (spip->spd_state == SPI_READY),
- "spiStop(), #1",
- "invalid state");
- spi_lld_stop(spip);
- spip->spd_state = SPI_STOP;
- chSysUnlock();
-}
-
-/**
- * @brief Asserts the slave select signal and prepares for transfers.
- * - * @param[in] spip pointer to the @p SPIDriver object
- */
-void spiSelect(SPIDriver *spip) {
-
- chDbgCheck(spip != NULL, "spiSelect");
-
- chSysLock();
- chDbgAssert((spip->spd_state == SPI_READY) ||
- (spip->spd_state == SPI_ACTIVE),
- "spiSelect(), #1",
- "not idle");
- spi_lld_select(spip);
- spip->spd_state = SPI_ACTIVE;
- chSysUnlock();
-}
-
-/**
- * @brief Deasserts the slave select signal.
- * @details The previously selected peripheral is unselected.
- * - * @param[in] spip pointer to the @p SPIDriver object
- */
-void spiUnselect(SPIDriver *spip) {
-
- chDbgCheck(spip != NULL, "spiUnselect");
-
- chSysLock();
- chDbgAssert((spip->spd_state == SPI_READY) ||
- (spip->spd_state == SPI_ACTIVE),
- "spiUnselect(), #1",
- "not locked");
- spi_lld_unselect(spip);
- spip->spd_state = SPI_READY;
- chSysUnlock();
-}
-
-/**
- * @brief Ignores data on the SPI bus.
- * @details This function transmits a series of idle words on the SPI bus and
- * ignores the received data. This function can be invoked even
- * when a slave select signal has not been yet asserted.
- * - * @param[in] spip pointer to the @p SPIDriver object
- * @param[in] n number of words to be ignored
- */
-void spiIgnore(SPIDriver *spip, size_t n) {
-
- chDbgCheck((spip != NULL) && (n > 0), "spiIgnore");
- chDbgAssert((spip->spd_state == SPI_READY) || (spip->spd_state == SPI_ACTIVE),
- "spiIgnore(), #1",
- "not active");
-
- spi_lld_ignore(spip, n);
-}
-
-/**
- * @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[in] n number of words to be exchanged - * @param[in] txbuf the pointer to the transmit buffer
- * @param[out] rxbuf the pointer to the receive buffer
- *
- * @note The buffers are organized as uint8_t arrays for data sizes below or
- * equal to 8 bits else it is organized as uint16_t arrays.
- */
-void spiExchange(SPIDriver *spip, size_t n, const void *txbuf, void *rxbuf) {
-
- chDbgCheck((spip != NULL) && (n > 0) && (rxbuf != NULL) && (txbuf != NULL),
- "spiExchange");
- chDbgAssert(spip->spd_state == SPI_ACTIVE,
- "spiExchange(), #1",
- "not active");
-
- spi_lld_exchange(spip, n, txbuf, rxbuf);
-}
-
-/**
- * @brief Sends data ever the SPI bus.
- *
- * @param[in] spip pointer to the @p SPIDriver object
- * @param[in] n number of words to send
- * @param[in] txbuf the pointer to the transmit buffer
- *
- * @note The buffers are organized as uint8_t arrays for data sizes below or
- * equal to 8 bits else it is organized as uint16_t arrays.
- */
-void spiSend(SPIDriver *spip, size_t n, const void *txbuf) {
-
- chDbgCheck((spip != NULL) && (n > 0) && (txbuf != NULL),
- "spiSend");
- chDbgAssert(spip->spd_state == SPI_ACTIVE,
- "spiSend(), #1",
- "not active");
-
- spi_lld_send(spip, n, txbuf);
-}
-
-/**
- * @brief Receives data from the SPI bus.
- *
- * @param[in] spip pointer to the @p SPIDriver object
- * @param[in] n number of words to receive
- * @param[out] rxbuf the pointer to the receive buffer
- *
- * @note The buffers are organized as uint8_t arrays for data sizes below or
- * equal to 8 bits else it is organized as uint16_t arrays.
- */
-void spiReceive(SPIDriver *spip, size_t n, void *rxbuf) {
-
- chDbgCheck((spip != NULL) && (n > 0) && (rxbuf != NULL),
- "spiReceive");
- chDbgAssert(spip->spd_state == SPI_ACTIVE,
- "spiReceive(), #1",
- "not active");
-
- spi_lld_receive(spip, n, rxbuf);
-}
-
-#if SPI_USE_MUTUAL_EXCLUSION || defined(__DOXYGEN__)
-/**
- * @brief Gains exclusive access to the SPI bus.
- * @details This function tries to gain ownership to the SPI bus, if the bus
- * is already being used then the invoking thread is queued.
- *
- * @param[in] spip pointer to the @p SPIDriver object
- *
- * @note This function is only available when the @p SPI_USE_MUTUAL_EXCLUSION
- * option is set to @p TRUE.
- */
-void spiAcquireBus(SPIDriver *spip) {
-
- chDbgCheck(spip != NULL, "spiAcquireBus");
-
-#if CH_USE_MUTEXES
- chMtxLock(&spip->spd_mutex);
-#elif CH_USE_SEMAPHORES
- chSemWait(&spip->spd_semaphore);
-#endif
-}
-
-/**
- * @brief Releases exclusive access to the SPI bus.
- *
- * @param[in] spip pointer to the @p SPIDriver object
- *
- * @note This function is only available when the @p SPI_USE_MUTUAL_EXCLUSION
- * option is set to @p TRUE.
- */
-void spiReleaseBus(SPIDriver *spip) {
-
- chDbgCheck(spip != NULL, "spiReleaseBus");
-
-#if CH_USE_MUTEXES
- (void)spip;
- chMtxUnlock();
-#elif CH_USE_SEMAPHORES
- chSemSignal(&spip->spd_semaphore);
-#endif
-}
-#endif /*SPI_USE_MUTUAL_EXCLUSION */
-
-#endif /* CH_HAL_USE_SPI */
-
-/** @} */
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