Lesson #1: HeartBeat
Milko Denis
diff --git a/stm32f4xx_hal_msp.c b/stm32f4xx_hal_msp.c
new file mode 100644
index 0000000..efcd206
--- /dev/null
+++ b/stm32f4xx_hal_msp.c
@@ -0,0 +1,297 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * File Name : stm32f4xx_hal_msp.c
+ * Description : This file provides code for the MSP Initialization
+ * and de-Initialization codes.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© Copyright (c) 2019 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+/* Private typedef -----------------------------------------------------------*/
+/* USER CODE BEGIN TD */
+
+/* USER CODE END TD */
+
+/* Private define ------------------------------------------------------------*/
+/* USER CODE BEGIN Define */
+
+/* USER CODE END Define */
+
+/* Private macro -------------------------------------------------------------*/
+/* USER CODE BEGIN Macro */
+
+/* USER CODE END Macro */
+
+/* Private variables ---------------------------------------------------------*/
+/* USER CODE BEGIN PV */
+
+/* USER CODE END PV */
+
+/* Private function prototypes -----------------------------------------------*/
+/* USER CODE BEGIN PFP */
+
+/* USER CODE END PFP */
+
+/* External functions --------------------------------------------------------*/
+/* USER CODE BEGIN ExternalFunctions */
+
+/* USER CODE END ExternalFunctions */
+
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+/**
+ * Initializes the Global MSP.
+ */
+void HAL_MspInit(void)
+{
+ /* USER CODE BEGIN MspInit 0 */
+
+ /* USER CODE END MspInit 0 */
+
+ __HAL_RCC_SYSCFG_CLK_ENABLE();
+ __HAL_RCC_PWR_CLK_ENABLE();
+
+ HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_0);
+
+ /* System interrupt init*/
+
+ /* USER CODE BEGIN MspInit 1 */
+
+ /* USER CODE END MspInit 1 */
+}
+
+/**
+* @brief I2C MSP Initialization
+* This function configures the hardware resources used in this example
+* @param hi2c: I2C handle pointer
+* @retval None
+*/
+void HAL_I2C_MspInit(I2C_HandleTypeDef* hi2c)
+{
+ GPIO_InitTypeDef GPIO_InitStruct = {0};
+ if(hi2c->Instance==I2C1)
+ {
+ /* USER CODE BEGIN I2C1_MspInit 0 */
+
+ /* USER CODE END I2C1_MspInit 0 */
+
+ __HAL_RCC_GPIOB_CLK_ENABLE();
+ /**I2C1 GPIO Configuration
+ PB6 ------> I2C1_SCL
+ PB9 ------> I2C1_SDA
+ */
+ GPIO_InitStruct.Pin = Audio_SCL_Pin|Audio_SDA_Pin;
+ GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
+ GPIO_InitStruct.Pull = GPIO_PULLUP;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+ GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
+ HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+
+ /* Peripheral clock enable */
+ __HAL_RCC_I2C1_CLK_ENABLE();
+ /* USER CODE BEGIN I2C1_MspInit 1 */
+
+ /* USER CODE END I2C1_MspInit 1 */
+ }
+
+}
+
+/**
+* @brief I2C MSP De-Initialization
+* This function freeze the hardware resources used in this example
+* @param hi2c: I2C handle pointer
+* @retval None
+*/
+void HAL_I2C_MspDeInit(I2C_HandleTypeDef* hi2c)
+{
+ if(hi2c->Instance==I2C1)
+ {
+ /* USER CODE BEGIN I2C1_MspDeInit 0 */
+
+ /* USER CODE END I2C1_MspDeInit 0 */
+ /* Peripheral clock disable */
+ __HAL_RCC_I2C1_CLK_DISABLE();
+
+ /**I2C1 GPIO Configuration
+ PB6 ------> I2C1_SCL
+ PB9 ------> I2C1_SDA
+ */
+ HAL_GPIO_DeInit(GPIOB, Audio_SCL_Pin|Audio_SDA_Pin);
+
+ /* USER CODE BEGIN I2C1_MspDeInit 1 */
+
+ /* USER CODE END I2C1_MspDeInit 1 */
+ }
+
+}
+
+/**
+* @brief I2S MSP Initialization
+* This function configures the hardware resources used in this example
+* @param hi2s: I2S handle pointer
+* @retval None
+*/
+void HAL_I2S_MspInit(I2S_HandleTypeDef* hi2s)
+{
+ GPIO_InitTypeDef GPIO_InitStruct = {0};
+ if(hi2s->Instance==SPI3)
+ {
+ /* USER CODE BEGIN SPI3_MspInit 0 */
+
+ /* USER CODE END SPI3_MspInit 0 */
+ /* Peripheral clock enable */
+ __HAL_RCC_SPI3_CLK_ENABLE();
+
+ __HAL_RCC_GPIOA_CLK_ENABLE();
+ __HAL_RCC_GPIOC_CLK_ENABLE();
+ /**I2S3 GPIO Configuration
+ PA4 ------> I2S3_WS
+ PC7 ------> I2S3_MCK
+ PC10 ------> I2S3_CK
+ PC12 ------> I2S3_SD
+ */
+ GPIO_InitStruct.Pin = I2S3_WS_Pin;
+ GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+ GPIO_InitStruct.Pull = GPIO_NOPULL;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+ GPIO_InitStruct.Alternate = GPIO_AF6_SPI3;
+ HAL_GPIO_Init(I2S3_WS_GPIO_Port, &GPIO_InitStruct);
+
+ GPIO_InitStruct.Pin = I2S3_MCK_Pin|I2S3_SCK_Pin|I2S3_SD_Pin;
+ GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+ GPIO_InitStruct.Pull = GPIO_NOPULL;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+ GPIO_InitStruct.Alternate = GPIO_AF6_SPI3;
+ HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
+
+ /* USER CODE BEGIN SPI3_MspInit 1 */
+
+ /* USER CODE END SPI3_MspInit 1 */
+ }
+
+}
+
+/**
+* @brief I2S MSP De-Initialization
+* This function freeze the hardware resources used in this example
+* @param hi2s: I2S handle pointer
+* @retval None
+*/
+void HAL_I2S_MspDeInit(I2S_HandleTypeDef* hi2s)
+{
+ if(hi2s->Instance==SPI3)
+ {
+ /* USER CODE BEGIN SPI3_MspDeInit 0 */
+
+ /* USER CODE END SPI3_MspDeInit 0 */
+ /* Peripheral clock disable */
+ __HAL_RCC_SPI3_CLK_DISABLE();
+
+ /**I2S3 GPIO Configuration
+ PA4 ------> I2S3_WS
+ PC7 ------> I2S3_MCK
+ PC10 ------> I2S3_CK
+ PC12 ------> I2S3_SD
+ */
+ HAL_GPIO_DeInit(I2S3_WS_GPIO_Port, I2S3_WS_Pin);
+
+ HAL_GPIO_DeInit(GPIOC, I2S3_MCK_Pin|I2S3_SCK_Pin|I2S3_SD_Pin);
+
+ /* USER CODE BEGIN SPI3_MspDeInit 1 */
+
+ /* USER CODE END SPI3_MspDeInit 1 */
+ }
+
+}
+
+/**
+* @brief SPI MSP Initialization
+* This function configures the hardware resources used in this example
+* @param hspi: SPI handle pointer
+* @retval None
+*/
+void HAL_SPI_MspInit(SPI_HandleTypeDef* hspi)
+{
+ GPIO_InitTypeDef GPIO_InitStruct = {0};
+ if(hspi->Instance==SPI1)
+ {
+ /* USER CODE BEGIN SPI1_MspInit 0 */
+
+ /* USER CODE END SPI1_MspInit 0 */
+ /* Peripheral clock enable */
+ __HAL_RCC_SPI1_CLK_ENABLE();
+
+ __HAL_RCC_GPIOA_CLK_ENABLE();
+ /**SPI1 GPIO Configuration
+ PA5 ------> SPI1_SCK
+ PA6 ------> SPI1_MISO
+ PA7 ------> SPI1_MOSI
+ */
+ GPIO_InitStruct.Pin = SPI1_SCK_Pin|SPI1_MISO_Pin|SPI1_MOSI_Pin;
+ GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+ GPIO_InitStruct.Pull = GPIO_NOPULL;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+ GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
+ HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+ /* USER CODE BEGIN SPI1_MspInit 1 */
+
+ /* USER CODE END SPI1_MspInit 1 */
+ }
+
+}
+
+/**
+* @brief SPI MSP De-Initialization
+* This function freeze the hardware resources used in this example
+* @param hspi: SPI handle pointer
+* @retval None
+*/
+void HAL_SPI_MspDeInit(SPI_HandleTypeDef* hspi)
+{
+ if(hspi->Instance==SPI1)
+ {
+ /* USER CODE BEGIN SPI1_MspDeInit 0 */
+
+ /* USER CODE END SPI1_MspDeInit 0 */
+ /* Peripheral clock disable */
+ __HAL_RCC_SPI1_CLK_DISABLE();
+
+ /**SPI1 GPIO Configuration
+ PA5 ------> SPI1_SCK
+ PA6 ------> SPI1_MISO
+ PA7 ------> SPI1_MOSI
+ */
+ HAL_GPIO_DeInit(GPIOA, SPI1_SCK_Pin|SPI1_MISO_Pin|SPI1_MOSI_Pin);
+
+ /* USER CODE BEGIN SPI1_MspDeInit 1 */
+
+ /* USER CODE END SPI1_MspDeInit 1 */
+ }
+
+}
+
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/