1 files changed, 115 insertions, 0 deletions
diff --git a/fw/hid-dials/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_spi_ex.c b/fw/hid-dials/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_spi_ex.c
new file mode 100644
index 0000000..b746553
--- /dev/null
+++ b/fw/hid-dials/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_spi_ex.c
@@ -0,0 +1,115 @@
+/**
+  ******************************************************************************
+  * @file    stm32f0xx_hal_spi_ex.c
+  * @author  MCD Application Team
+  * @brief   Extended SPI HAL module driver.
+  *          This file provides firmware functions to manage the following
+  *          SPI peripheral extended functionalities :
+  *           + IO operation functions
+  *
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under BSD 3-Clause license,
+  * the "License"; You may not use this file except in compliance with the
+  * License. You may obtain a copy of the License at:
+  *                        opensource.org/licenses/BSD-3-Clause
+  *
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f0xx_hal.h"
+
+/** @addtogroup STM32F0xx_HAL_Driver
+  * @{
+  */
+
+/** @defgroup SPIEx SPIEx
+  * @brief SPI Extended HAL module driver
+  * @{
+  */
+#ifdef HAL_SPI_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private defines -----------------------------------------------------------*/
+/** @defgroup SPIEx_Private_Constants SPIEx Private Constants
+  * @{
+  */
+#define SPI_FIFO_SIZE       4UL
+/**
+  * @}
+  */
+
+/* Private macros ------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Exported functions --------------------------------------------------------*/
+
+/** @defgroup SPIEx_Exported_Functions SPIEx Exported Functions
+  * @{
+  */
+
+/** @defgroup SPIEx_Exported_Functions_Group1 IO operation functions
+  *  @brief   Data transfers functions
+  *
+@verbatim
+  ==============================================================================
+                      ##### IO operation functions #####
+ ===============================================================================
+ [..]
+    This subsection provides a set of extended functions to manage the SPI
+    data transfers.
+
+    (#) Rx data flush function:
+        (++) HAL_SPIEx_FlushRxFifo()
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Flush the RX fifo.
+  * @param  hspi pointer to a SPI_HandleTypeDef structure that contains
+  *               the configuration information for the specified SPI module.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_SPIEx_FlushRxFifo(SPI_HandleTypeDef *hspi)
+{
+  __IO uint32_t tmpreg;
+  uint8_t  count = 0U;
+  while ((hspi->Instance->SR & SPI_FLAG_FRLVL) !=  SPI_FRLVL_EMPTY)
+  {
+    count++;
+    tmpreg = hspi->Instance->DR;
+    UNUSED(tmpreg); /* To avoid GCC warning */
+    if (count == SPI_FIFO_SIZE)
+    {
+      return HAL_TIMEOUT;
+    }
+  }
+  return HAL_OK;
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#endif /* HAL_SPI_MODULE_ENABLED */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/