配置I2C引脚,以PB6和PB7引脚作为I2C1的SCL和SDA线。配置I2C模式,设置I2C1为主模式,设置I2C传输速率为100Kbps。使能I2C1时钟。配置I2C时钟,使能I2C1时钟。对初始化I2C1接口。MPU6050的I2C地址为0x68。 初始化MPU6050,通过I2C发送初始化指令和参数,设置MPU6050的采样频率为1000Hz、陀螺仪的量程±250°/s,加速度计的量程为±2g。读取MPU6050的原始数据,只需发出读取指令就可以接收MPU6050传输回来的数据。写一段代码
时间: 2024-02-26 20:51:37 浏览: 216
以下是使用STM32CubeMX和HAL库初始化I2C1接口,并通过I2C1接口初始化MPU6050,读取原始数据的示例代码:
```c
#include "main.h"
#include "stdio.h"
I2C_HandleTypeDef hi2c1;
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_I2C1_Init(void);
#define MPU6050_ADDR (0x68 << 1)
uint8_t MPU6050_Init(void)
{
uint8_t check;
uint8_t Data;
// 检查设备ID
HAL_I2C_Mem_Read(&hi2c1, MPU6050_ADDR, 0x75, 1, &check, 1, 1000);
if (check != 0x68) {
printf("MPU6050 not found.");
return 1;
}
// 设置采样率为1kHz
Data = 0x07;
HAL_I2C_Mem_Write(&hi2c1, MPU6050_ADDR, 0x19, 1, &Data, 1, 1000);
// 设置陀螺仪量程为±250°/s
Data = 0x00;
HAL_I2C_Mem_Write(&hi2c1, MPU6050_ADDR, 0x1B, 1, &Data, 1, 1000);
// 设置加速度计量程为±2g
Data = 0x00;
HAL_I2C_Mem_Write(&hi2c1, MPU6050_ADDR, 0x1C, 1, &Data, 1, 1000);
// 使能低通滤波器
Data = 0x06;
HAL_I2C_Mem_Write(&hi2c1, MPU6050_ADDR, 0x1A, 1, &Data, 1, 1000);
// 使能数据输出
Data = 0x00;
HAL_I2C_Mem_Write(&hi2c1, MPU6050_ADDR, 0x6B, 1, &Data, 1, 1000);
return 0;
}
void MPU6050_Read_RawData(int16_t *Accelerometer_RawData, int16_t *Gyroscope_RawData)
{
uint8_t Data[14];
HAL_I2C_Mem_Read(&hi2c1, MPU6050_ADDR, 0x3B, 1, Data, 14, 1000);
Accelerometer_RawData[0] = (Data[0] << 8) | Data[1];
Accelerometer_RawData[1] = (Data[2] << 8) | Data[3];
Accelerometer_RawData[2] = (Data[4] << 8) | Data[5];
Gyroscope_RawData[0] = (Data[8] << 8) | Data[9];
Gyroscope_RawData[1] = (Data[10] << 8) | Data[11];
Gyroscope_RawData[2] = (Data[12] << 8) | Data[13];
}
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_I2C1_Init();
uint8_t MPU6050_Status = MPU6050_Init();
if (MPU6050_Status != 0) {
while (1);
}
int16_t Accelerometer_RawData[3];
int16_t Gyroscope_RawData[3];
while (1)
{
MPU6050_Read_RawData(Accelerometer_RawData, Gyroscope_RawData);
printf("Accelerometer: %d %d %d\n", Accelerometer_RawData[0], Accelerometer_RawData[1], Accelerometer_RawData[2]);
printf("Gyroscope: %d %d %d\n", Gyroscope_RawData[0], Gyroscope_RawData[1], Gyroscope_RawData[2]);
HAL_Delay(1000);
}
}
void MX_I2C1_Init(void)
{
hi2c1.Instance = I2C1;
hi2c1.Init.ClockSpeed = 100000;
hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
hi2c1.Init.OwnAddress1 = 0;
hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c1.Init.OwnAddress2 = 0;
hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if (HAL_I2C_Init(&hi2c1) != HAL_OK)
{
Error_Handler();
}
}
void Error_Handler(void)
{
}
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Configure the main internal regulator output voltage
*/
__HAL_RCC_PWR_CLK_ENABLE();
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
{
Error_Handler();
}
}
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
__HAL_RCC_GPIOB_CLK_ENABLE();
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6|GPIO_PIN_7, GPIO_PIN_RESET);
GPIO_InitStruct.Pin = GPIO_PIN_6|GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF1_I2C1;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
}
```
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