LuChiChick/STM32G030F6P6_Evaluation
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commit for I2C1 peripheral config with RX DMA channel, and set PC15 as MPU6050 INT pin input with EXTI interrupt line.

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This commit is contained in:
LuChiChick
2026-08-24 20:12:50 +08:00
parent 2d980d87ad
commit 983d63e3a5
14 changed files with 11486 additions and 28 deletions
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Core/Src/gpio.c
+12 -8
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@@ -51,22 +51,26 @@ void MX_GPIO_Init(void)
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
/*Configure GPIO pins : PB7 PB8 PB9 PB0
PB1 PB2 PB3 PB4
PB5 PB6 */
GPIO_InitStruct.Pin = GPIO_PIN_7|GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_0
|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4
|GPIO_PIN_5|GPIO_PIN_6;
/*Configure GPIO pins : PB7 PB0 PB1 PB2
PB3 PB4 PB5 PB6 */
GPIO_InitStruct.Pin = GPIO_PIN_7|GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2
|GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/*Configure GPIO pins : PC14 PC15 */
GPIO_InitStruct.Pin = GPIO_PIN_14|GPIO_PIN_15;
/*Configure GPIO pin : PC14 */
GPIO_InitStruct.Pin = GPIO_PIN_14;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
/*Configure GPIO pin : MPU6050_EXTI15_Pin */
GPIO_InitStruct.Pin = MPU6050_EXTI15_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(MPU6050_EXTI15_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pins : ENCODER_A_EXTI0_Pin ENCODER_S_EXTI4_Pin */
GPIO_InitStruct.Pin = ENCODER_A_EXTI0_Pin|ENCODER_S_EXTI4_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING_FALLING;
Core/Src/i2c.c
+169
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@@ -0,0 +1,169 @@
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file i2c.c
* @brief This file provides code for the configuration
* of the I2C instances.
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "i2c.h"
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
I2C_HandleTypeDef hi2c1;
DMA_HandleTypeDef hdma_i2c1_rx;
/* I2C1 init function */
void MX_I2C1_Init(void)
{
/* USER CODE BEGIN I2C1_Init 0 */
/* USER CODE END I2C1_Init 0 */
/* USER CODE BEGIN I2C1_Init 1 */
/* USER CODE END I2C1_Init 1 */
hi2c1.Instance = I2C1;
hi2c1.Init.Timing = 0x00C12166;
hi2c1.Init.OwnAddress1 = 0;
hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c1.Init.OwnAddress2 = 0;
hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if (HAL_I2C_Init(&hi2c1) != HAL_OK)
{
Error_Handler();
}
/** Configure Analogue filter
*/
if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
{
Error_Handler();
}
/** Configure Digital filter
*/
if (HAL_I2CEx_ConfigDigitalFilter(&hi2c1, 0) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN I2C1_Init 2 */
/* USER CODE END I2C1_Init 2 */
}
void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
if(i2cHandle->Instance==I2C1)
{
/* USER CODE BEGIN I2C1_MspInit 0 */
/* USER CODE END I2C1_MspInit 0 */
/** Initializes the peripherals clocks
*/
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_I2C1;
PeriphClkInit.I2c1ClockSelection = RCC_I2C1CLKSOURCE_PCLK1;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Error_Handler();
}
__HAL_RCC_GPIOB_CLK_ENABLE();
/**I2C1 GPIO Configuration
PB8 ------> I2C1_SCL
PB9 ------> I2C1_SDA
*/
GPIO_InitStruct.Pin = GPIO_PIN_8|GPIO_PIN_9;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct.Alternate = GPIO_AF6_I2C1;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* I2C1 clock enable */
__HAL_RCC_I2C1_CLK_ENABLE();
/* I2C1 DMA Init */
/* I2C1_RX Init */
hdma_i2c1_rx.Instance = DMA1_Channel3;
hdma_i2c1_rx.Init.Request = DMA_REQUEST_I2C1_RX;
hdma_i2c1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
hdma_i2c1_rx.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_i2c1_rx.Init.MemInc = DMA_MINC_ENABLE;
hdma_i2c1_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
hdma_i2c1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
hdma_i2c1_rx.Init.Mode = DMA_NORMAL;
hdma_i2c1_rx.Init.Priority = DMA_PRIORITY_LOW;
if (HAL_DMA_Init(&hdma_i2c1_rx) != HAL_OK)
{
Error_Handler();
}
__HAL_LINKDMA(i2cHandle,hdmarx,hdma_i2c1_rx);
/* I2C1 interrupt Init */
HAL_NVIC_SetPriority(I2C1_IRQn, 3, 0);
HAL_NVIC_EnableIRQ(I2C1_IRQn);
/* USER CODE BEGIN I2C1_MspInit 1 */
/* USER CODE END I2C1_MspInit 1 */
}
}
void HAL_I2C_MspDeInit(I2C_HandleTypeDef* i2cHandle)
{
if(i2cHandle->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
PB8 ------> I2C1_SCL
PB9 ------> I2C1_SDA
*/
HAL_GPIO_DeInit(GPIOB, GPIO_PIN_8);
HAL_GPIO_DeInit(GPIOB, GPIO_PIN_9);
/* I2C1 DMA DeInit */
HAL_DMA_DeInit(i2cHandle->hdmarx);
/* I2C1 interrupt Deinit */
HAL_NVIC_DisableIRQ(I2C1_IRQn);
/* USER CODE BEGIN I2C1_MspDeInit 1 */
/* USER CODE END I2C1_MspDeInit 1 */
}
}
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
Core/Src/main.c
+2
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@@ -20,6 +20,7 @@
#include "main.h"
#include "cmsis_os.h"
#include "dma.h"
#include "i2c.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"
@@ -94,6 +95,7 @@ int main(void)
MX_DMA_Init();
MX_USART2_UART_Init();
MX_TIM1_Init();
MX_I2C1_Init();
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */
Core/Src/stm32g0xx_it.c
+25
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@@ -55,6 +55,8 @@
/* USER CODE END 0 */
/* External variables --------------------------------------------------------*/
extern DMA_HandleTypeDef hdma_i2c1_rx;
extern I2C_HandleTypeDef hi2c1;
extern DMA_HandleTypeDef hdma_usart2_rx;
extern DMA_HandleTypeDef hdma_usart2_tx;
extern UART_HandleTypeDef huart2;
@@ -127,6 +129,7 @@ void EXTI4_15_IRQHandler(void)
/* USER CODE END EXTI4_15_IRQn 0 */
HAL_GPIO_EXTI_IRQHandler(ENCODER_S_EXTI4_Pin);
HAL_GPIO_EXTI_IRQHandler(MPU6050_EXTI15_Pin);
/* USER CODE BEGIN EXTI4_15_IRQn 1 */
/* USER CODE END EXTI4_15_IRQn 1 */
@@ -155,6 +158,7 @@ void DMA1_Channel2_3_IRQHandler(void)
/* USER CODE END DMA1_Channel2_3_IRQn 0 */
HAL_DMA_IRQHandler(&hdma_usart2_tx);
HAL_DMA_IRQHandler(&hdma_i2c1_rx);
/* USER CODE BEGIN DMA1_Channel2_3_IRQn 1 */
/* USER CODE END DMA1_Channel2_3_IRQn 1 */
@@ -174,6 +178,27 @@ void TIM17_IRQHandler(void)
/* USER CODE END TIM17_IRQn 1 */
}
/**
* @brief This function handles I2C1 event global interrupt / I2C1 wake-up interrupt through EXTI line 23.
*/
void I2C1_IRQHandler(void)
{
/* USER CODE BEGIN I2C1_IRQn 0 */
/* USER CODE END I2C1_IRQn 0 */
if (hi2c1.Instance->ISR & (I2C_FLAG_BERR | I2C_FLAG_ARLO | I2C_FLAG_OVR))
{
HAL_I2C_ER_IRQHandler(&hi2c1);
}
else
{
HAL_I2C_EV_IRQHandler(&hi2c1);
}
/* USER CODE BEGIN I2C1_IRQn 1 */
/* USER CODE END I2C1_IRQn 1 */
}
/**
* @brief This function handles USART2 global interrupt / USART2 wake-up interrupt through EXTI line 26.
*/