diff options
Diffstat (limited to 'drivers/fsl_i2c_freertos.c')
-rw-r--r-- | drivers/fsl_i2c_freertos.c | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/drivers/fsl_i2c_freertos.c b/drivers/fsl_i2c_freertos.c deleted file mode 100644 index e622fbe..0000000 --- a/drivers/fsl_i2c_freertos.c +++ /dev/null @@ -1,121 +0,0 @@ -/* - * Copyright (c) 2015, Freescale Semiconductor, Inc. - * Copyright 2016-2017 NXP - * - * Redistribution and use in source and binary forms, with or without modification, - * are permitted provided that the following conditions are met: - * - * o Redistributions of source code must retain the above copyright notice, this list - * of conditions and the following disclaimer. - * - * o Redistributions in binary form must reproduce the above copyright notice, this - * list of conditions and the following disclaimer in the documentation and/or - * other materials provided with the distribution. - * - * o Neither the name of the copyright holder nor the names of its - * contributors may be used to endorse or promote products derived from this - * software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR - * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include "fsl_i2c_freertos.h" - -static void I2C_RTOS_Callback(I2C_Type *base, i2c_master_handle_t *drv_handle, status_t status, void *userData) -{ - i2c_rtos_handle_t *handle = (i2c_rtos_handle_t *)userData; - BaseType_t reschedule; - handle->async_status = status; - xSemaphoreGiveFromISR(handle->semaphore, &reschedule); - portYIELD_FROM_ISR(reschedule); -} - -status_t I2C_RTOS_Init(i2c_rtos_handle_t *handle, - I2C_Type *base, - const i2c_master_config_t *masterConfig, - uint32_t srcClock_Hz) -{ - if (handle == NULL) - { - return kStatus_InvalidArgument; - } - - if (base == NULL) - { - return kStatus_InvalidArgument; - } - - memset(handle, 0, sizeof(i2c_rtos_handle_t)); -#if (configSUPPORT_STATIC_ALLOCATION == 1) - handle->mutex = xSemaphoreCreateMutexStatic(&handle->mutexBuffer); -#else - handle->mutex = xSemaphoreCreateMutex(); -#endif - if (handle->mutex == NULL) - { - return kStatus_Fail; - } -#if (configSUPPORT_STATIC_ALLOCATION == 1) - handle->semaphore = xSemaphoreCreateBinaryStatic(&handle->semaphoreBuffer); -#else - handle->semaphore = xSemaphoreCreateBinary(); -#endif - if (handle->semaphore == NULL) - { - vSemaphoreDelete(handle->mutex); - return kStatus_Fail; - } - - handle->base = base; - - I2C_MasterInit(handle->base, masterConfig, srcClock_Hz); - I2C_MasterTransferCreateHandle(base, &handle->drv_handle, I2C_RTOS_Callback, (void *)handle); - - return kStatus_Success; -} - -status_t I2C_RTOS_Deinit(i2c_rtos_handle_t *handle) -{ - I2C_MasterDeinit(handle->base); - - vSemaphoreDelete(handle->semaphore); - vSemaphoreDelete(handle->mutex); - - return kStatus_Success; -} - -status_t I2C_RTOS_Transfer(i2c_rtos_handle_t *handle, i2c_master_transfer_t *transfer) -{ - status_t status; - - /* Lock resource mutex */ - if (xSemaphoreTake(handle->mutex, portMAX_DELAY) != pdTRUE) - { - return kStatus_I2C_Busy; - } - - status = I2C_MasterTransferNonBlocking(handle->base, &handle->drv_handle, transfer); - if (status != kStatus_Success) - { - xSemaphoreGive(handle->mutex); - return status; - } - - /* Wait for transfer to finish */ - xSemaphoreTake(handle->semaphore, portMAX_DELAY); - - /* Unlock resource mutex */ - xSemaphoreGive(handle->mutex); - - /* Return status captured by callback function */ - return handle->async_status; -} |