mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/TARGET_STM/TARGET_STM32F0/device/stm32f0xx_hal_spi_ex.c@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
180:96ed750bd169 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /**
<> 144:ef7eb2e8f9f7 2 ******************************************************************************
<> 144:ef7eb2e8f9f7 3 * @file stm32f0xx_hal_spi_ex.c
<> 144:ef7eb2e8f9f7 4 * @author MCD Application Team
<> 144:ef7eb2e8f9f7 5 * @brief Extended SPI HAL module driver.
<> 144:ef7eb2e8f9f7 6 * This file provides firmware functions to manage the following
<> 144:ef7eb2e8f9f7 7 * SPI peripheral extended functionalities :
<> 144:ef7eb2e8f9f7 8 * + IO operation functions
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 ******************************************************************************
<> 144:ef7eb2e8f9f7 11 * @attention
<> 144:ef7eb2e8f9f7 12 *
<> 144:ef7eb2e8f9f7 13 * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
<> 144:ef7eb2e8f9f7 14 *
<> 144:ef7eb2e8f9f7 15 * Redistribution and use in source and binary forms, with or without modification,
<> 144:ef7eb2e8f9f7 16 * are permitted provided that the following conditions are met:
<> 144:ef7eb2e8f9f7 17 * 1. Redistributions of source code must retain the above copyright notice,
<> 144:ef7eb2e8f9f7 18 * this list of conditions and the following disclaimer.
<> 144:ef7eb2e8f9f7 19 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 144:ef7eb2e8f9f7 20 * this list of conditions and the following disclaimer in the documentation
<> 144:ef7eb2e8f9f7 21 * and/or other materials provided with the distribution.
<> 144:ef7eb2e8f9f7 22 * 3. Neither the name of STMicroelectronics nor the names of its contributors
<> 144:ef7eb2e8f9f7 23 * may be used to endorse or promote products derived from this software
<> 144:ef7eb2e8f9f7 24 * without specific prior written permission.
<> 144:ef7eb2e8f9f7 25 *
<> 144:ef7eb2e8f9f7 26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 144:ef7eb2e8f9f7 27 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 144:ef7eb2e8f9f7 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 144:ef7eb2e8f9f7 29 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
<> 144:ef7eb2e8f9f7 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
<> 144:ef7eb2e8f9f7 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
<> 144:ef7eb2e8f9f7 32 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
<> 144:ef7eb2e8f9f7 33 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
<> 144:ef7eb2e8f9f7 34 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<> 144:ef7eb2e8f9f7 35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 144:ef7eb2e8f9f7 36 *
<> 144:ef7eb2e8f9f7 37 ******************************************************************************
<> 144:ef7eb2e8f9f7 38 */
<> 144:ef7eb2e8f9f7 39
<> 144:ef7eb2e8f9f7 40 /* Includes ------------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 41 #include "stm32f0xx_hal.h"
<> 144:ef7eb2e8f9f7 42
<> 144:ef7eb2e8f9f7 43 /** @addtogroup STM32F0xx_HAL_Driver
<> 144:ef7eb2e8f9f7 44 * @{
<> 144:ef7eb2e8f9f7 45 */
<> 144:ef7eb2e8f9f7 46
<> 144:ef7eb2e8f9f7 47 /** @defgroup SPIEx SPIEx
<> 144:ef7eb2e8f9f7 48 * @brief SPI Extended HAL module driver
<> 144:ef7eb2e8f9f7 49 * @{
<> 144:ef7eb2e8f9f7 50 */
<> 144:ef7eb2e8f9f7 51 #ifdef HAL_SPI_MODULE_ENABLED
<> 144:ef7eb2e8f9f7 52
<> 144:ef7eb2e8f9f7 53 /* Private typedef -----------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 54 /* Private defines -----------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 55 /** @defgroup SPIEx_Private_Constants SPIEx Private Constants
<> 144:ef7eb2e8f9f7 56 * @{
<> 144:ef7eb2e8f9f7 57 */
Anna Bridge 180:96ed750bd169 58 #define SPI_FIFO_SIZE 4
<> 144:ef7eb2e8f9f7 59 /**
<> 144:ef7eb2e8f9f7 60 * @}
<> 144:ef7eb2e8f9f7 61 */
<> 144:ef7eb2e8f9f7 62
<> 144:ef7eb2e8f9f7 63 /* Private macros ------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 64 /* Private variables ---------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 65 /* Private function prototypes -----------------------------------------------*/
<> 144:ef7eb2e8f9f7 66 /* Exported functions ---------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 67
<> 144:ef7eb2e8f9f7 68 /** @defgroup SPIEx_Exported_Functions SPIEx Exported Functions
<> 144:ef7eb2e8f9f7 69 * @{
<> 144:ef7eb2e8f9f7 70 */
<> 144:ef7eb2e8f9f7 71
<> 144:ef7eb2e8f9f7 72 /** @defgroup SPIEx_Exported_Functions_Group1 IO operation functions
Anna Bridge 180:96ed750bd169 73 * @brief Data transfers functions
Anna Bridge 180:96ed750bd169 74 *
<> 144:ef7eb2e8f9f7 75 @verbatim
<> 144:ef7eb2e8f9f7 76 ==============================================================================
<> 144:ef7eb2e8f9f7 77 ##### IO operation functions #####
<> 144:ef7eb2e8f9f7 78 ===============================================================================
<> 144:ef7eb2e8f9f7 79 [..]
<> 144:ef7eb2e8f9f7 80 This subsection provides a set of extended functions to manage the SPI
<> 144:ef7eb2e8f9f7 81 data transfers.
<> 144:ef7eb2e8f9f7 82
<> 144:ef7eb2e8f9f7 83 (#) Rx data flush function:
<> 144:ef7eb2e8f9f7 84 (++) HAL_SPIEx_FlushRxFifo()
<> 144:ef7eb2e8f9f7 85
<> 144:ef7eb2e8f9f7 86 @endverbatim
<> 144:ef7eb2e8f9f7 87 * @{
<> 144:ef7eb2e8f9f7 88 */
<> 144:ef7eb2e8f9f7 89
<> 144:ef7eb2e8f9f7 90 /**
<> 144:ef7eb2e8f9f7 91 * @brief Flush the RX fifo.
Anna Bridge 180:96ed750bd169 92 * @param hspi pointer to a SPI_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 93 * the configuration information for the specified SPI module.
<> 144:ef7eb2e8f9f7 94 * @retval HAL status
<> 144:ef7eb2e8f9f7 95 */
<> 144:ef7eb2e8f9f7 96 HAL_StatusTypeDef HAL_SPIEx_FlushRxFifo(SPI_HandleTypeDef *hspi)
<> 144:ef7eb2e8f9f7 97 {
<> 144:ef7eb2e8f9f7 98 __IO uint32_t tmpreg;
<> 156:95d6b41a828b 99 uint8_t count = 0U;
<> 156:95d6b41a828b 100 while ((hspi->Instance->SR & SPI_FLAG_FRLVL) != SPI_FRLVL_EMPTY)
<> 144:ef7eb2e8f9f7 101 {
<> 144:ef7eb2e8f9f7 102 count++;
<> 144:ef7eb2e8f9f7 103 tmpreg = hspi->Instance->DR;
<> 144:ef7eb2e8f9f7 104 UNUSED(tmpreg); /* To avoid GCC warning */
<> 156:95d6b41a828b 105 if (count == SPI_FIFO_SIZE)
<> 144:ef7eb2e8f9f7 106 {
<> 144:ef7eb2e8f9f7 107 return HAL_TIMEOUT;
<> 144:ef7eb2e8f9f7 108 }
<> 144:ef7eb2e8f9f7 109 }
<> 144:ef7eb2e8f9f7 110 return HAL_OK;
<> 144:ef7eb2e8f9f7 111 }
<> 144:ef7eb2e8f9f7 112
<> 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 #endif /* HAL_SPI_MODULE_ENABLED */
<> 144:ef7eb2e8f9f7 122
<> 144:ef7eb2e8f9f7 123 /**
<> 144:ef7eb2e8f9f7 124 * @}
<> 144:ef7eb2e8f9f7 125 */
<> 144:ef7eb2e8f9f7 126
<> 144:ef7eb2e8f9f7 127 /**
<> 144:ef7eb2e8f9f7 128 * @}
<> 144:ef7eb2e8f9f7 129 */
<> 144:ef7eb2e8f9f7 130
<> 144:ef7eb2e8f9f7 131 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/