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Diffstat (limited to 'os/hal/src/i2c.c')
| -rw-r--r-- | os/hal/src/i2c.c | 283 |
1 files changed, 0 insertions, 283 deletions
diff --git a/os/hal/src/i2c.c b/os/hal/src/i2c.c deleted file mode 100644 index 0ed77eeaf..000000000 --- a/os/hal/src/i2c.c +++ /dev/null @@ -1,283 +0,0 @@ -/*
- 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.
-*/
-/*
- Concepts and parts of this file have been contributed by Uladzimir Pylinsky
- aka barthess.
- */
-
-/**
- * @file i2c.c
- * @brief I2C Driver code.
- *
- * @addtogroup I2C
- * @{
- */
-#include "hal.h"
-
-#if (HAL_USE_I2C == TRUE) || defined(__DOXYGEN__)
-
-/*===========================================================================*/
-/* Driver local definitions. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver exported variables. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver local variables and types. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver local functions. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver exported functions. */
-/*===========================================================================*/
-
-/**
- * @brief I2C Driver initialization.
- * @note This function is implicitly invoked by @p halInit(), there is
- * no need to explicitly initialize the driver.
- *
- * @init
- */
-void i2cInit(void) {
-
- i2c_lld_init();
-}
-
-/**
- * @brief Initializes the standard part of a @p I2CDriver structure.
- *
- * @param[out] i2cp pointer to the @p I2CDriver object
- *
- * @init
- */
-void i2cObjectInit(I2CDriver *i2cp) {
-
- i2cp->state = I2C_STOP;
- i2cp->config = NULL;
-
-#if I2C_USE_MUTUAL_EXCLUSION == TRUE
- osalMutexObjectInit(&i2cp->mutex);
-#endif
-
-#if defined(I2C_DRIVER_EXT_INIT_HOOK)
- I2C_DRIVER_EXT_INIT_HOOK(i2cp);
-#endif
-}
-
-/**
- * @brief Configures and activates the I2C peripheral.
- *
- * @param[in] i2cp pointer to the @p I2CDriver object
- * @param[in] config pointer to the @p I2CConfig object
- *
- * @api
- */
-void i2cStart(I2CDriver *i2cp, const I2CConfig *config) {
-
- osalDbgCheck((i2cp != NULL) && (config != NULL));
- osalDbgAssert((i2cp->state == I2C_STOP) || (i2cp->state == I2C_READY) ||
- (i2cp->state == I2C_LOCKED), "invalid state");
-
- osalSysLock();
- i2cp->config = config;
- i2c_lld_start(i2cp);
- i2cp->state = I2C_READY;
- osalSysUnlock();
-}
-
-/**
- * @brief Deactivates the I2C peripheral.
- *
- * @param[in] i2cp pointer to the @p I2CDriver object
- *
- * @api
- */
-void i2cStop(I2CDriver *i2cp) {
-
- osalDbgCheck(i2cp != NULL);
- osalDbgAssert((i2cp->state == I2C_STOP) || (i2cp->state == I2C_READY) ||
- (i2cp->state == I2C_LOCKED), "invalid state");
-
- osalSysLock();
- i2c_lld_stop(i2cp);
- i2cp->state = I2C_STOP;
- osalSysUnlock();
-}
-
-/**
- * @brief Returns the errors mask associated to the previous operation.
- *
- * @param[in] i2cp pointer to the @p I2CDriver object
- * @return The errors mask.
- *
- * @api
- */
-i2cflags_t i2cGetErrors(I2CDriver *i2cp) {
-
- osalDbgCheck(i2cp != NULL);
-
- return i2c_lld_get_errors(i2cp);
-}
-
-/**
- * @brief Sends data via the I2C bus.
- * @details Function designed to realize "read-through-write" transfer
- * paradigm. If you want transmit data without any further read,
- * than set @b rxbytes field to 0.
- *
- * @param[in] i2cp pointer to the @p I2CDriver object
- * @param[in] addr slave device address (7 bits) without R/W bit
- * @param[in] txbuf pointer to transmit buffer
- * @param[in] txbytes number of bytes to be transmitted
- * @param[out] rxbuf pointer to receive buffer
- * @param[in] rxbytes number of bytes to be received, set it to 0 if
- * you want transmit only
- * @param[in] timeout the number of ticks before the operation timeouts,
- * the following special values are allowed:
- * - @a TIME_INFINITE no timeout.
- * .
- *
- * @return The operation status.
- * @retval MSG_OK if the function succeeded.
- * @retval MSG_RESET if one or more I2C errors occurred, the errors can
- * be retrieved using @p i2cGetErrors().
- * @retval MSG_TIMEOUT if a timeout occurred before operation end.
- *
- * @api
- */
-msg_t i2cMasterTransmitTimeout(I2CDriver *i2cp,
- i2caddr_t addr,
- const uint8_t *txbuf,
- size_t txbytes,
- uint8_t *rxbuf,
- size_t rxbytes,
- systime_t timeout) {
- msg_t rdymsg;
-
- osalDbgCheck((i2cp != NULL) && (addr != 0U) &&
- (txbytes > 0U) && (txbuf != NULL) &&
- ((rxbytes == 0U) || ((rxbytes > 0U) && (rxbuf != NULL))) &&
- (timeout != TIME_IMMEDIATE));
-
- osalDbgAssert(i2cp->state == I2C_READY, "not ready");
-
- osalSysLock();
- i2cp->errors = I2C_NO_ERROR;
- i2cp->state = I2C_ACTIVE_TX;
- rdymsg = i2c_lld_master_transmit_timeout(i2cp, addr, txbuf, txbytes,
- rxbuf, rxbytes, timeout);
- if (rdymsg == MSG_TIMEOUT) {
- i2cp->state = I2C_LOCKED;
- }
- else {
- i2cp->state = I2C_READY;
- }
- osalSysUnlock();
- return rdymsg;
-}
-
-/**
- * @brief Receives data from the I2C bus.
- *
- * @param[in] i2cp pointer to the @p I2CDriver object
- * @param[in] addr slave device address (7 bits) without R/W bit
- * @param[out] rxbuf pointer to receive buffer
- * @param[in] rxbytes number of bytes to be received
- * @param[in] timeout the number of ticks before the operation timeouts,
- * the following special values are allowed:
- * - @a TIME_INFINITE no timeout.
- * .
- *
- * @return The operation status.
- * @retval MSG_OK if the function succeeded.
- * @retval MSG_RESET if one or more I2C errors occurred, the errors can
- * be retrieved using @p i2cGetErrors().
- * @retval MSG_TIMEOUT if a timeout occurred before operation end.
- *
- * @api
- */
-msg_t i2cMasterReceiveTimeout(I2CDriver *i2cp,
- i2caddr_t addr,
- uint8_t *rxbuf,
- size_t rxbytes,
- systime_t timeout){
-
- msg_t rdymsg;
-
- osalDbgCheck((i2cp != NULL) && (addr != 0U) &&
- (rxbytes > 0U) && (rxbuf != NULL) &&
- (timeout != TIME_IMMEDIATE));
-
- osalDbgAssert(i2cp->state == I2C_READY, "not ready");
-
- osalSysLock();
- i2cp->errors = I2C_NO_ERROR;
- i2cp->state = I2C_ACTIVE_RX;
- rdymsg = i2c_lld_master_receive_timeout(i2cp, addr, rxbuf, rxbytes, timeout);
- if (rdymsg == MSG_TIMEOUT) {
- i2cp->state = I2C_LOCKED;
- }
- else {
- i2cp->state = I2C_READY;
- }
- osalSysUnlock();
- return rdymsg;
-}
-
-#if (I2C_USE_MUTUAL_EXCLUSION == TRUE) || defined(__DOXYGEN__)
-/**
- * @brief Gains exclusive access to the I2C bus.
- * @details This function tries to gain ownership to the I2C bus, if the bus
- * is already being used then the invoking thread is queued.
- * @pre In order to use this function the option @p I2C_USE_MUTUAL_EXCLUSION
- * must be enabled.
- *
- * @param[in] i2cp pointer to the @p I2CDriver object
- *
- * @api
- */
-void i2cAcquireBus(I2CDriver *i2cp) {
-
- osalDbgCheck(i2cp != NULL);
-
- osalMutexLock(&i2cp->mutex);
-}
-
-/**
- * @brief Releases exclusive access to the I2C bus.
- * @pre In order to use this function the option @p I2C_USE_MUTUAL_EXCLUSION
- * must be enabled.
- *
- * @param[in] i2cp pointer to the @p I2CDriver object
- *
- * @api
- */
-void i2cReleaseBus(I2CDriver *i2cp) {
-
- osalDbgCheck(i2cp != NULL);
-
- osalMutexUnlock(&i2cp->mutex);
-}
-#endif /* I2C_USE_MUTUAL_EXCLUSION == TRUE */
-
-#endif /* HAL_USE_I2C == TRUE */
-
-/** @} */
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