diff options
author | Dominik Sliwa <dominik.sliwa@toradex.com> | 2018-10-30 16:31:29 +0100 |
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committer | Dominik Sliwa <dominik.sliwa@toradex.com> | 2018-10-31 11:54:38 +0100 |
commit | 56e86c626df3dbf74c1021210636a7c5d92a49ce (patch) | |
tree | 54ba9581ad14d838d8926e4e6d673befad1f932c /drivers/src/fsl_dspi_freertos.c | |
parent | 4dfc5493fec8f6290457446b0478695b153da60a (diff) |
move to cmakeapalis-tk1-k20-freertos-v9
Signed-off-by: Dominik Sliwa <dominik.sliwa@toradex.com>
Diffstat (limited to 'drivers/src/fsl_dspi_freertos.c')
-rw-r--r-- | drivers/src/fsl_dspi_freertos.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/drivers/src/fsl_dspi_freertos.c b/drivers/src/fsl_dspi_freertos.c new file mode 100644 index 0000000..da5eeca --- /dev/null +++ b/drivers/src/fsl_dspi_freertos.c @@ -0,0 +1,121 @@ +/* + * 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_dspi_freertos.h" + +static void DSPI_RTOS_Callback(SPI_Type *base, dspi_master_handle_t *drv_handle, status_t status, void *userData) +{ + dspi_rtos_handle_t *handle = (dspi_rtos_handle_t *)userData; + BaseType_t reschedule; + + xSemaphoreGiveFromISR(handle->event, &reschedule); + portYIELD_FROM_ISR(reschedule); +} + +status_t DSPI_RTOS_Init(dspi_rtos_handle_t *handle, + SPI_Type *base, + const dspi_master_config_t *masterConfig, + uint32_t srcClock_Hz) +{ + if (handle == NULL) + { + return kStatus_InvalidArgument; + } + + if (base == NULL) + { + return kStatus_InvalidArgument; + } + + memset(handle, 0, sizeof(dspi_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->event = xSemaphoreCreateBinaryStatic(&handle->semaphoreBuffer); +#else + handle->event = xSemaphoreCreateBinary(); +#endif + if (handle->event == NULL) + { + vSemaphoreDelete(handle->mutex); + return kStatus_Fail; + } + + handle->base = base; + + DSPI_MasterInit(handle->base, masterConfig, srcClock_Hz); + DSPI_MasterTransferCreateHandle(handle->base, &handle->drv_handle, DSPI_RTOS_Callback, (void *)handle); + + return kStatus_Success; +} + +status_t DSPI_RTOS_Deinit(dspi_rtos_handle_t *handle) +{ + DSPI_Deinit(handle->base); + vSemaphoreDelete(handle->event); + vSemaphoreDelete(handle->mutex); + + return kStatus_Success; +} + +status_t DSPI_RTOS_Transfer(dspi_rtos_handle_t *handle, dspi_transfer_t *transfer) +{ + status_t status; + + /* Lock resource mutex */ + if (xSemaphoreTake(handle->mutex, portMAX_DELAY) != pdTRUE) + { + return kStatus_DSPI_Busy; + } + + status = DSPI_MasterTransferNonBlocking(handle->base, &handle->drv_handle, transfer); + if (status != kStatus_Success) + { + xSemaphoreGive(handle->mutex); + return status; + } + + /* Wait for transfer to finish */ + xSemaphoreTake(handle->event, portMAX_DELAY); + + /* Unlock resource mutex */ + xSemaphoreGive(handle->mutex); + + /* Return status captured by callback function */ + return handle->async_status; +} |