Enable I2C1

[home-hw.git] / Src / main.c

diff --git a/Src/main.c b/Src/main.c
index 02220adda978003e7bc1dd0548c9177cb37f073a..5552021b51cf1363a354f4f95d78a65ea84fd830 100644 (file)
--- a/Src/main.c
+++ b/Src/main.c
@@ -55,6 +55,7 @@ static void LL_Init(void);
 void SystemClock_Config(void);
 static void MX_GPIO_Init(void);
 static void MX_USART2_UART_Init(void);
+static void MX_I2C1_Init(void);
 
 /* USER CODE BEGIN PFP */
 /* Private function prototypes -----------------------------------------------*/
@@ -95,19 +96,20 @@ int main(void)
   /* Initialize all configured peripherals */
   MX_GPIO_Init();
   MX_USART2_UART_Init();
+  MX_I2C1_Init();
   /* USER CODE BEGIN 2 */
 
+  run_test();
+
   /* USER CODE END 2 */
 
   /* Infinite loop */
   /* USER CODE BEGIN WHILE */
   while (1)
   {
-
   /* USER CODE END WHILE */
 
   /* USER CODE BEGIN 3 */
-
   }
   /* USER CODE END 3 */
 
@@ -177,10 +179,66 @@ void SystemClock_Config(void)
 
   LL_SetSystemCoreClock(32000000);
 
+  LL_RCC_SetI2CClockSource(LL_RCC_I2C1_CLKSOURCE_HSI);
+
   /* SysTick_IRQn interrupt configuration */
   NVIC_SetPriority(SysTick_IRQn, 0);
 }
 
+/* I2C1 init function */
+static void MX_I2C1_Init(void)
+{
+
+  LL_I2C_InitTypeDef I2C_InitStruct;
+
+  LL_GPIO_InitTypeDef GPIO_InitStruct;
+
+  /**I2C1 GPIO Configuration  
+  PB6   ------> I2C1_SCL
+  PB7   ------> I2C1_SDA 
+  */
+  GPIO_InitStruct.Pin = LL_GPIO_PIN_6;
+  GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
+  GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_HIGH;
+  GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
+  GPIO_InitStruct.Pull = LL_GPIO_PULL_UP;
+  GPIO_InitStruct.Alternate = LL_GPIO_AF_1;
+  LL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+
+  GPIO_InitStruct.Pin = LL_GPIO_PIN_7;
+  GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
+  GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_HIGH;
+  GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
+  GPIO_InitStruct.Pull = LL_GPIO_PULL_UP;
+  GPIO_InitStruct.Alternate = LL_GPIO_AF_1;
+  LL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+
+  /* Peripheral clock enable */
+  LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_I2C1);
+
+    /**I2C Initialization 
+    */
+  I2C_InitStruct.PeripheralMode = LL_I2C_MODE_I2C;
+  I2C_InitStruct.Timing = 0x2000090E;
+  I2C_InitStruct.AnalogFilter = LL_I2C_ANALOGFILTER_ENABLE;
+  I2C_InitStruct.DigitalFilter = 0;
+  I2C_InitStruct.OwnAddress1 = 0;
+  I2C_InitStruct.TypeAcknowledge = LL_I2C_ACK;
+  I2C_InitStruct.OwnAddrSize = LL_I2C_OWNADDRESS1_7BIT;
+  LL_I2C_Init(I2C1, &I2C_InitStruct);
+
+  LL_I2C_EnableAutoEndMode(I2C1);
+
+  LL_I2C_SetOwnAddress2(I2C1, 0, LL_I2C_OWNADDRESS2_NOMASK);
+
+  LL_I2C_DisableOwnAddress2(I2C1);
+
+  LL_I2C_DisableGeneralCall(I2C1);
+
+  LL_I2C_EnableClockStretching(I2C1);
+
+}
+
 /* USART2 init function */
 static void MX_USART2_UART_Init(void)
 {
@@ -212,7 +270,7 @@ static void MX_USART2_UART_Init(void)
   GPIO_InitStruct.Alternate = LL_GPIO_AF_1;
   LL_GPIO_Init(USART_RX_GPIO_Port, &GPIO_InitStruct);
 
-  USART_InitStruct.BaudRate = 38400;
+  USART_InitStruct.BaudRate = 115200;
   USART_InitStruct.DataWidth = LL_USART_DATAWIDTH_8B;
   USART_InitStruct.StopBits = LL_USART_STOPBITS_1;
   USART_InitStruct.Parity = LL_USART_PARITY_NONE;
@@ -248,6 +306,7 @@ static void MX_GPIO_Init(void)
   LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOC);
   LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOF);
   LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOA);
+  LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOB);
 
   /**/
   LL_GPIO_ResetOutputPin(LD2_GPIO_Port, LD2_Pin);