commit for I2C2 peripheral config with TX DMA channel, working on 400kHz fast mode.

Core/Inc/i2c.h

@@ -34,11 +34,14 @@ extern "C" {
 
 extern I2C_HandleTypeDef hi2c1;
 
+extern I2C_HandleTypeDef hi2c2;
+
 /* USER CODE BEGIN Private defines */
 
 /* USER CODE END Private defines */
 
 void MX_I2C1_Init(void);
+void MX_I2C2_Init(void);
 
 /* USER CODE BEGIN Prototypes */
 

Core/Inc/stm32g0xx_it.h

@@ -52,8 +52,10 @@ void EXTI0_1_IRQHandler(void);
 void EXTI4_15_IRQHandler(void);
 void DMA1_Channel1_IRQHandler(void);
 void DMA1_Channel2_3_IRQHandler(void);
+void DMA1_Ch4_5_DMAMUX1_OVR_IRQHandler(void);
 void TIM17_IRQHandler(void);
 void I2C1_IRQHandler(void);
+void I2C2_IRQHandler(void);
 void USART2_IRQHandler(void);
 /* USER CODE BEGIN EFP */
 

Core/Src/dma.c

@@ -49,6 +49,9 @@ void MX_DMA_Init(void)
   /* DMA1_Channel2_3_IRQn interrupt configuration */
   HAL_NVIC_SetPriority(DMA1_Channel2_3_IRQn, 3, 0);
   HAL_NVIC_EnableIRQ(DMA1_Channel2_3_IRQn);
+  /* DMA1_Ch4_5_DMAMUX1_OVR_IRQn interrupt configuration */
+  HAL_NVIC_SetPriority(DMA1_Ch4_5_DMAMUX1_OVR_IRQn, 3, 0);
+  HAL_NVIC_EnableIRQ(DMA1_Ch4_5_DMAMUX1_OVR_IRQn);
 
 }
 

Core/Src/gpio.c

@@ -83,10 +83,8 @@ void MX_GPIO_Init(void)
   GPIO_InitStruct.Pull = GPIO_NOPULL;
   HAL_GPIO_Init(ENCODER_B_INPUT_GPIO_Port, &GPIO_InitStruct);
 
-  /*Configure GPIO pins : PA5 PA6 PA7 PA11
+  /*Configure GPIO pins : PA5 PA6 PA7 PA15 */
-                           PA12 PA15 */
+  GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7|GPIO_PIN_15;
-  GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7|GPIO_PIN_11
-                          |GPIO_PIN_12|GPIO_PIN_15;
   GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
   GPIO_InitStruct.Pull = GPIO_NOPULL;
   HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

Core/Src/i2c.c

@@ -25,7 +25,9 @@
 /* USER CODE END 0 */
 
 I2C_HandleTypeDef hi2c1;
+I2C_HandleTypeDef hi2c2;
 DMA_HandleTypeDef hdma_i2c1_rx;
+DMA_HandleTypeDef hdma_i2c2_tx;
 
 /* I2C1 init function */
 void MX_I2C1_Init(void)
@@ -69,6 +71,49 @@ void MX_I2C1_Init(void)
 
   /* USER CODE END I2C1_Init 2 */
 
+}
+/* I2C2 init function */
+void MX_I2C2_Init(void)
+{
+
+  /* USER CODE BEGIN I2C2_Init 0 */
+
+  /* USER CODE END I2C2_Init 0 */
+
+  /* USER CODE BEGIN I2C2_Init 1 */
+
+  /* USER CODE END I2C2_Init 1 */
+  hi2c2.Instance = I2C2;
+  hi2c2.Init.Timing = 0x00C12166;
+  hi2c2.Init.OwnAddress1 = 0;
+  hi2c2.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
+  hi2c2.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
+  hi2c2.Init.OwnAddress2 = 0;
+  hi2c2.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
+  hi2c2.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
+  hi2c2.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
+  if (HAL_I2C_Init(&hi2c2) != HAL_OK)
+  {
+    Error_Handler();
+  }
+
+  /** Configure Analogue filter
+  */
+  if (HAL_I2CEx_ConfigAnalogFilter(&hi2c2, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
+  {
+    Error_Handler();
+  }
+
+  /** Configure Digital filter
+  */
+  if (HAL_I2CEx_ConfigDigitalFilter(&hi2c2, 0) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  /* USER CODE BEGIN I2C2_Init 2 */
+
+  /* USER CODE END I2C2_Init 2 */
+
 }
 
 void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
@@ -131,6 +176,52 @@ void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
 
   /* USER CODE END I2C1_MspInit 1 */
   }
+  else if(i2cHandle->Instance==I2C2)
+  {
+  /* USER CODE BEGIN I2C2_MspInit 0 */
+
+  /* USER CODE END I2C2_MspInit 0 */
+
+    __HAL_RCC_GPIOA_CLK_ENABLE();
+    /**I2C2 GPIO Configuration
+    PA11 [PA9]     ------> I2C2_SCL
+    PA12 [PA10]     ------> I2C2_SDA
+    */
+    GPIO_InitStruct.Pin = GPIO_PIN_11|GPIO_PIN_12;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+    GPIO_InitStruct.Alternate = GPIO_AF6_I2C2;
+    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+    /* I2C2 clock enable */
+    __HAL_RCC_I2C2_CLK_ENABLE();
+
+    /* I2C2 DMA Init */
+    /* I2C2_TX Init */
+    hdma_i2c2_tx.Instance = DMA1_Channel4;
+    hdma_i2c2_tx.Init.Request = DMA_REQUEST_I2C2_TX;
+    hdma_i2c2_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
+    hdma_i2c2_tx.Init.PeriphInc = DMA_PINC_DISABLE;
+    hdma_i2c2_tx.Init.MemInc = DMA_MINC_ENABLE;
+    hdma_i2c2_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
+    hdma_i2c2_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
+    hdma_i2c2_tx.Init.Mode = DMA_NORMAL;
+    hdma_i2c2_tx.Init.Priority = DMA_PRIORITY_LOW;
+    if (HAL_DMA_Init(&hdma_i2c2_tx) != HAL_OK)
+    {
+      Error_Handler();
+    }
+
+    __HAL_LINKDMA(i2cHandle,hdmatx,hdma_i2c2_tx);
+
+    /* I2C2 interrupt Init */
+    HAL_NVIC_SetPriority(I2C2_IRQn, 3, 0);
+    HAL_NVIC_EnableIRQ(I2C2_IRQn);
+  /* USER CODE BEGIN I2C2_MspInit 1 */
+
+  /* USER CODE END I2C2_MspInit 1 */
+  }
 }
 
 void HAL_I2C_MspDeInit(I2C_HandleTypeDef* i2cHandle)
@@ -161,6 +252,31 @@ void HAL_I2C_MspDeInit(I2C_HandleTypeDef* i2cHandle)
 
   /* USER CODE END I2C1_MspDeInit 1 */
   }
+  else if(i2cHandle->Instance==I2C2)
+  {
+  /* USER CODE BEGIN I2C2_MspDeInit 0 */
+
+  /* USER CODE END I2C2_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_I2C2_CLK_DISABLE();
+
+    /**I2C2 GPIO Configuration
+    PA11 [PA9]     ------> I2C2_SCL
+    PA12 [PA10]     ------> I2C2_SDA
+    */
+    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_11);
+
+    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_12);
+
+    /* I2C2 DMA DeInit */
+    HAL_DMA_DeInit(i2cHandle->hdmatx);
+
+    /* I2C2 interrupt Deinit */
+    HAL_NVIC_DisableIRQ(I2C2_IRQn);
+  /* USER CODE BEGIN I2C2_MspDeInit 1 */
+
+  /* USER CODE END I2C2_MspDeInit 1 */
+  }
 }
 
 /* USER CODE BEGIN 1 */

Core/Src/main.c

@@ -96,6 +96,7 @@ int main(void)
   MX_USART2_UART_Init();
   MX_TIM1_Init();
   MX_I2C1_Init();
+  MX_I2C2_Init();
   /* USER CODE BEGIN 2 */
 
   /* USER CODE END 2 */

Core/Src/stm32g0xx_it.c

@@ -56,7 +56,9 @@
 
 /* External variables --------------------------------------------------------*/
 extern DMA_HandleTypeDef hdma_i2c1_rx;
+extern DMA_HandleTypeDef hdma_i2c2_tx;
 extern I2C_HandleTypeDef hi2c1;
+extern I2C_HandleTypeDef hi2c2;
 extern DMA_HandleTypeDef hdma_usart2_rx;
 extern DMA_HandleTypeDef hdma_usart2_tx;
 extern UART_HandleTypeDef huart2;
@@ -164,6 +166,20 @@ void DMA1_Channel2_3_IRQHandler(void)
   /* USER CODE END DMA1_Channel2_3_IRQn 1 */
 }
 
+/**
+  * @brief This function handles DMA1 channel 4, channel 5 and DMAMUX1 interrupts.
+  */
+void DMA1_Ch4_5_DMAMUX1_OVR_IRQHandler(void)
+{
+  /* USER CODE BEGIN DMA1_Ch4_5_DMAMUX1_OVR_IRQn 0 */
+
+  /* USER CODE END DMA1_Ch4_5_DMAMUX1_OVR_IRQn 0 */
+  HAL_DMA_IRQHandler(&hdma_i2c2_tx);
+  /* USER CODE BEGIN DMA1_Ch4_5_DMAMUX1_OVR_IRQn 1 */
+
+  /* USER CODE END DMA1_Ch4_5_DMAMUX1_OVR_IRQn 1 */
+}
+
 /**
   * @brief This function handles TIM17 global interrupt.
   */
@@ -199,6 +215,27 @@ void I2C1_IRQHandler(void)
   /* USER CODE END I2C1_IRQn 1 */
 }
 
+/**
+  * @brief This function handles I2C2 global interrupt.
+  */
+void I2C2_IRQHandler(void)
+{
+  /* USER CODE BEGIN I2C2_IRQn 0 */
+
+  /* USER CODE END I2C2_IRQn 0 */
+  if (hi2c2.Instance->ISR & (I2C_FLAG_BERR | I2C_FLAG_ARLO | I2C_FLAG_OVR))
+  {
+    HAL_I2C_ER_IRQHandler(&hi2c2);
+  }
+  else
+  {
+    HAL_I2C_EV_IRQHandler(&hi2c2);
+  }
+  /* USER CODE BEGIN I2C2_IRQn 1 */
+
+  /* USER CODE END I2C2_IRQn 1 */
+}
+
 /**
   * @brief This function handles USART2 global interrupt / USART2 wake-up interrupt through EXTI line 26.
   */

STM32G030F6P6_Evaluation.ioc

@@ -19,10 +19,28 @@ Dma.I2C1_RX.2.SyncEnable=DISABLE
 Dma.I2C1_RX.2.SyncPolarity=HAL_DMAMUX_SYNC_NO_EVENT
 Dma.I2C1_RX.2.SyncRequestNumber=1
 Dma.I2C1_RX.2.SyncSignalID=NONE
+Dma.I2C2_TX.3.Direction=DMA_MEMORY_TO_PERIPH
+Dma.I2C2_TX.3.EventEnable=DISABLE
+Dma.I2C2_TX.3.Instance=DMA1_Channel4
+Dma.I2C2_TX.3.MemDataAlignment=DMA_MDATAALIGN_BYTE
+Dma.I2C2_TX.3.MemInc=DMA_MINC_ENABLE
+Dma.I2C2_TX.3.Mode=DMA_NORMAL
+Dma.I2C2_TX.3.PeriphDataAlignment=DMA_PDATAALIGN_BYTE
+Dma.I2C2_TX.3.PeriphInc=DMA_PINC_DISABLE
+Dma.I2C2_TX.3.Polarity=HAL_DMAMUX_REQ_GEN_RISING
+Dma.I2C2_TX.3.Priority=DMA_PRIORITY_LOW
+Dma.I2C2_TX.3.RequestNumber=1
+Dma.I2C2_TX.3.RequestParameters=Instance,Direction,PeriphInc,MemInc,PeriphDataAlignment,MemDataAlignment,Mode,Priority,SignalID,Polarity,RequestNumber,SyncSignalID,SyncPolarity,SyncEnable,EventEnable,SyncRequestNumber
+Dma.I2C2_TX.3.SignalID=NONE
+Dma.I2C2_TX.3.SyncEnable=DISABLE
+Dma.I2C2_TX.3.SyncPolarity=HAL_DMAMUX_SYNC_NO_EVENT
+Dma.I2C2_TX.3.SyncRequestNumber=1
+Dma.I2C2_TX.3.SyncSignalID=NONE
 Dma.Request0=USART2_RX
 Dma.Request1=USART2_TX
 Dma.Request2=I2C1_RX
-Dma.RequestsNb=3
+Dma.Request3=I2C2_TX
+Dma.RequestsNb=4
 Dma.USART2_RX.0.Direction=DMA_PERIPH_TO_MEMORY
 Dma.USART2_RX.0.EventEnable=DISABLE
 Dma.USART2_RX.0.Instance=DMA1_Channel1
@@ -70,25 +88,31 @@ GPIO.groupedBy=Group By Peripherals
 I2C1.I2C_Speed_Mode=I2C_Fast
 I2C1.IPParameters=Timing,I2C_Speed_Mode
 I2C1.Timing=0x00C12166
+I2C2.I2C_Speed_Mode=I2C_Fast
+I2C2.IPParameters=Timing,I2C_Speed_Mode
+I2C2.Timing=0x00C12166
 KeepUserPlacement=false
 Mcu.CPN=STM32G030F6P6TR
 Mcu.Family=STM32G0
 Mcu.IP0=DMA
 Mcu.IP1=FREERTOS
 Mcu.IP2=I2C1
-Mcu.IP3=NVIC
+Mcu.IP3=I2C2
-Mcu.IP4=RCC
+Mcu.IP4=NVIC
-Mcu.IP5=SYS
+Mcu.IP5=RCC
-Mcu.IP6=TIM1
+Mcu.IP6=SYS
-Mcu.IP7=USART2
+Mcu.IP7=TIM1
-Mcu.IPNb=8
+Mcu.IP8=USART2
+Mcu.IPNb=9
 Mcu.Name=STM32G030F6Px
 Mcu.Package=TSSOP20
 Mcu.Pin0=PB8
 Mcu.Pin1=PB9
-Mcu.Pin10=PA14-BOOT0
+Mcu.Pin10=PA12 [PA10]
-Mcu.Pin11=VP_FREERTOS_VS_CMSIS_V1
+Mcu.Pin11=PA13
-Mcu.Pin12=VP_SYS_VS_tim17
+Mcu.Pin12=PA14-BOOT0
+Mcu.Pin13=VP_FREERTOS_VS_CMSIS_V1
+Mcu.Pin14=VP_SYS_VS_tim17
 Mcu.Pin2=PC15-OSC32_OUT (PC15)
 Mcu.Pin3=PA0
 Mcu.Pin4=PA1
@@ -96,13 +120,14 @@ Mcu.Pin5=PA2
 Mcu.Pin6=PA3
 Mcu.Pin7=PA4
 Mcu.Pin8=PA8
-Mcu.Pin9=PA13
+Mcu.Pin9=PA11 [PA9]
-Mcu.PinsNb=13
+Mcu.PinsNb=15
 Mcu.ThirdPartyNb=0
 Mcu.UserConstants=
 Mcu.UserName=STM32G030F6Px
 MxCube.Version=6.18.0
 MxDb.Version=DB.6.0.180
+NVIC.DMA1_Ch4_5_DMAMUX1_OVR_IRQn=true\:3\:0\:false\:false\:true\:true\:false\:true\:true
 NVIC.DMA1_Channel1_IRQn=true\:3\:0\:false\:false\:true\:true\:false\:true\:true
 NVIC.DMA1_Channel2_3_IRQn=true\:3\:0\:false\:false\:true\:true\:false\:true\:true
 NVIC.EXTI0_1_IRQn=true\:3\:0\:false\:false\:true\:true\:true\:true\:true
@@ -110,6 +135,7 @@ NVIC.EXTI4_15_IRQn=true\:3\:0\:false\:false\:true\:true\:true\:true\:true
 NVIC.ForceEnableDMAVector=true
 NVIC.HardFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false\:false
 NVIC.I2C1_IRQn=true\:3\:0\:false\:false\:true\:true\:true\:true\:true
+NVIC.I2C2_IRQn=true\:3\:0\:false\:false\:true\:true\:true\:true\:true
 NVIC.NonMaskableInt_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false\:false
 NVIC.PendSV_IRQn=true\:3\:0\:false\:false\:false\:true\:false\:false\:false
 NVIC.SVC_IRQn=true\:0\:0\:false\:false\:false\:false\:false\:false\:true
@@ -130,6 +156,10 @@ PA1.GPIOParameters=GPIO_Label
 PA1.GPIO_Label=ENCODER_B_INPUT
 PA1.Locked=true
 PA1.Signal=GPIO_Input
+PA11\ [PA9].Mode=I2C
+PA11\ [PA9].Signal=I2C2_SCL
+PA12\ [PA10].Mode=I2C
+PA12\ [PA10].Signal=I2C2_SDA
 PA13.Mode=Serial_Wire
 PA13.Signal=SYS_SWDIO
 PA14-BOOT0.Mode=Serial_Wire
@@ -205,7 +235,7 @@ ProjectManager.ToolChainLocation=
 ProjectManager.UAScriptAfterPath=
 ProjectManager.UAScriptBeforePath=
 ProjectManager.UnderRoot=false
-ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_DMA_Init-DMA-false-HAL-true,4-MX_USART2_UART_Init-USART2-false-HAL-true,5-MX_TIM1_Init-TIM1-false-HAL-true,6-MX_I2C1_Init-I2C1-false-HAL-true
+ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_DMA_Init-DMA-false-HAL-true,4-MX_USART2_UART_Init-USART2-false-HAL-true,5-MX_TIM1_Init-TIM1-false-HAL-true,6-MX_I2C1_Init-I2C1-false-HAL-true,7-MX_I2C2_Init-I2C2-false-HAL-true
 RCC.ADCFreq_Value=64000000
 RCC.AHBFreq_Value=64000000
 RCC.APBFreq_Value=64000000