pravin sarode / Mymbed-dev

MBED-DEV only fro Nucleo STM32F303K8T6

Fork of mbed-dev by mbed official

targets/TARGET_STM/TARGET_STM32F3/device/stm32f3xx_hal_spi_ex.c@151:acf04f8e7d03, 2016-11-19 (annotated)

Committer:
pravinautosys
Date:
Sat Nov 19 10:38:54 2016 +0000
Revision:
151:acf04f8e7d03
Parent:
149:156823d33999 
MyMBED-DEVWithSTM32F303K8T6;

Who changed what in which revision?

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<> 144:ef7eb2e8f9f7 1 /**
<> 144:ef7eb2e8f9f7 2 ******************************************************************************
<> 144:ef7eb2e8f9f7 3 * @file stm32f3xx_hal_spi_ex.c
<> 144:ef7eb2e8f9f7 4 * @author MCD Application Team
<> 144:ef7eb2e8f9f7 5 * @version V1.3.0
<> 144:ef7eb2e8f9f7 6 * @date 01-July-2016
<> 144:ef7eb2e8f9f7 7 * @brief Extended SPI HAL module driver.
<> 144:ef7eb2e8f9f7 8 * This file provides firmware functions to manage the following
<> 144:ef7eb2e8f9f7 9 * SPI peripheral extended functionalities :
<> 144:ef7eb2e8f9f7 10 * + IO operation functions
<> 144:ef7eb2e8f9f7 11 *
<> 144:ef7eb2e8f9f7 12 ******************************************************************************
<> 144:ef7eb2e8f9f7 13 * @attention
<> 144:ef7eb2e8f9f7 14 *
<> 144:ef7eb2e8f9f7 15 * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
<> 144:ef7eb2e8f9f7 16 *
<> 144:ef7eb2e8f9f7 17 * Redistribution and use in source and binary forms, with or without modification,
<> 144:ef7eb2e8f9f7 18 * are permitted provided that the following conditions are met:
<> 144:ef7eb2e8f9f7 19 * 1. Redistributions of source code must retain the above copyright notice,
<> 144:ef7eb2e8f9f7 20 * this list of conditions and the following disclaimer.
<> 144:ef7eb2e8f9f7 21 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 144:ef7eb2e8f9f7 22 * this list of conditions and the following disclaimer in the documentation
<> 144:ef7eb2e8f9f7 23 * and/or other materials provided with the distribution.
<> 144:ef7eb2e8f9f7 24 * 3. Neither the name of STMicroelectronics nor the names of its contributors
<> 144:ef7eb2e8f9f7 25 * may be used to endorse or promote products derived from this software
<> 144:ef7eb2e8f9f7 26 * without specific prior written permission.
<> 144:ef7eb2e8f9f7 27 *
<> 144:ef7eb2e8f9f7 28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 144:ef7eb2e8f9f7 29 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 144:ef7eb2e8f9f7 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 144:ef7eb2e8f9f7 31 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
<> 144:ef7eb2e8f9f7 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
<> 144:ef7eb2e8f9f7 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
<> 144:ef7eb2e8f9f7 34 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
<> 144:ef7eb2e8f9f7 35 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
<> 144:ef7eb2e8f9f7 36 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<> 144:ef7eb2e8f9f7 37 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 144:ef7eb2e8f9f7 38 *
<> 144:ef7eb2e8f9f7 39 ******************************************************************************
<> 144:ef7eb2e8f9f7 40 */
<> 144:ef7eb2e8f9f7 41
<> 144:ef7eb2e8f9f7 42 /* Includes ------------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 43 #include "stm32f3xx_hal.h"
<> 144:ef7eb2e8f9f7 44
<> 144:ef7eb2e8f9f7 45 /** @addtogroup STM32F3xx_HAL_Driver
<> 144:ef7eb2e8f9f7 46 * @{
<> 144:ef7eb2e8f9f7 47 */
<> 144:ef7eb2e8f9f7 48
<> 144:ef7eb2e8f9f7 49 /** @defgroup SPIEx SPIEx
<> 144:ef7eb2e8f9f7 50 * @brief SPI Extended HAL module driver
<> 144:ef7eb2e8f9f7 51 * @{
<> 144:ef7eb2e8f9f7 52 */
<> 144:ef7eb2e8f9f7 53 #ifdef HAL_SPI_MODULE_ENABLED
<> 144:ef7eb2e8f9f7 54
<> 144:ef7eb2e8f9f7 55 /* Private typedef -----------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 56 /* Private defines -----------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 57 /** @defgroup SPIEx_Private_Constants SPIEx Private Constants
<> 144:ef7eb2e8f9f7 58 * @{
<> 144:ef7eb2e8f9f7 59 */
<> 144:ef7eb2e8f9f7 60 #define SPI_FIFO_SIZE 4
<> 144:ef7eb2e8f9f7 61 /**
<> 144:ef7eb2e8f9f7 62 * @}
<> 144:ef7eb2e8f9f7 63 */
<> 144:ef7eb2e8f9f7 64
<> 144:ef7eb2e8f9f7 65 /* Private macros ------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 66 /* Private variables ---------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 67 /* Private function prototypes -----------------------------------------------*/
<> 144:ef7eb2e8f9f7 68 /* Exported functions ---------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 69
<> 144:ef7eb2e8f9f7 70 /** @defgroup SPIEx_Exported_Functions SPIEx Exported Functions
<> 144:ef7eb2e8f9f7 71 * @{
<> 144:ef7eb2e8f9f7 72 */
<> 144:ef7eb2e8f9f7 73
<> 144:ef7eb2e8f9f7 74 /** @defgroup SPIEx_Exported_Functions_Group1 IO operation functions
<> 144:ef7eb2e8f9f7 75 * @brief Data transfers functions
<> 144:ef7eb2e8f9f7 76 *
<> 144:ef7eb2e8f9f7 77 @verbatim
<> 144:ef7eb2e8f9f7 78 ==============================================================================
<> 144:ef7eb2e8f9f7 79 ##### IO operation functions #####
<> 144:ef7eb2e8f9f7 80 ===============================================================================
<> 144:ef7eb2e8f9f7 81 [..]
<> 144:ef7eb2e8f9f7 82 This subsection provides a set of extended functions to manage the SPI
<> 144:ef7eb2e8f9f7 83 data transfers.
<> 144:ef7eb2e8f9f7 84
<> 144:ef7eb2e8f9f7 85 (#) Rx data flush function:
<> 144:ef7eb2e8f9f7 86 (++) HAL_SPIEx_FlushRxFifo()
<> 144:ef7eb2e8f9f7 87
<> 144:ef7eb2e8f9f7 88 @endverbatim
<> 144:ef7eb2e8f9f7 89 * @{
<> 144:ef7eb2e8f9f7 90 */
<> 144:ef7eb2e8f9f7 91
<> 144:ef7eb2e8f9f7 92 /**
<> 144:ef7eb2e8f9f7 93 * @brief Flush the RX fifo.
<> 144:ef7eb2e8f9f7 94 * @param hspi: pointer to a SPI_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 95 * the configuration information for the specified SPI module.
<> 144:ef7eb2e8f9f7 96 * @retval HAL status
<> 144:ef7eb2e8f9f7 97 */
<> 144:ef7eb2e8f9f7 98 HAL_StatusTypeDef HAL_SPIEx_FlushRxFifo(SPI_HandleTypeDef *hspi)
<> 144:ef7eb2e8f9f7 99 {
<> 144:ef7eb2e8f9f7 100 __IO uint32_t tmpreg;
<> 144:ef7eb2e8f9f7 101 uint8_t count = 0;
<> 144:ef7eb2e8f9f7 102 while((hspi->Instance->SR & SPI_FLAG_FRLVL) != SPI_FRLVL_EMPTY)
<> 144:ef7eb2e8f9f7 103 {
<> 144:ef7eb2e8f9f7 104 count++;
<> 144:ef7eb2e8f9f7 105 tmpreg = hspi->Instance->DR;
<> 144:ef7eb2e8f9f7 106 UNUSED(tmpreg); /* To avoid GCC warning */
<> 144:ef7eb2e8f9f7 107 if(count == SPI_FIFO_SIZE)
<> 144:ef7eb2e8f9f7 108 {
<> 144:ef7eb2e8f9f7 109 return HAL_TIMEOUT;
<> 144:ef7eb2e8f9f7 110 }
<> 144:ef7eb2e8f9f7 111 }
<> 144:ef7eb2e8f9f7 112 return HAL_OK;
<> 144:ef7eb2e8f9f7 113 }
<> 144:ef7eb2e8f9f7 114
<> 144:ef7eb2e8f9f7 115 /**
<> 144:ef7eb2e8f9f7 116 * @}
<> 144:ef7eb2e8f9f7 117 */
<> 144:ef7eb2e8f9f7 118
<> 144:ef7eb2e8f9f7 119 /**
<> 144:ef7eb2e8f9f7 120 * @}
<> 144:ef7eb2e8f9f7 121 */
<> 144:ef7eb2e8f9f7 122
<> 144:ef7eb2e8f9f7 123 #endif /* HAL_SPI_MODULE_ENABLED */
<> 144:ef7eb2e8f9f7 124
<> 144:ef7eb2e8f9f7 125 /**
<> 144:ef7eb2e8f9f7 126 * @}
<> 144:ef7eb2e8f9f7 127 */
<> 144:ef7eb2e8f9f7 128
<> 144:ef7eb2e8f9f7 129 /**
<> 144:ef7eb2e8f9f7 130 * @}
<> 144:ef7eb2e8f9f7 131 */
<> 144:ef7eb2e8f9f7 132
<> 144:ef7eb2e8f9f7 133 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/