stm32读取目标芯片_STM32通过IIC读取MPU6050陀螺仪芯片数据核心程序
时间: 2023-12-17 19:03:20 浏览: 164
好的,以下是读取MPU6050陀螺仪芯片数据的STM32核心程序:
首先需要定义I2C的初始化函数,如下:
```c
void I2C_GPIO_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);
}
void I2C_Config(void)
{
I2C_InitTypeDef I2C_InitStructure;
I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
I2C_InitStructure.I2C_OwnAddress1 = 0x00;
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
I2C_InitStructure.I2C_ClockSpeed = 400000;
I2C_Init(I2C1, &I2C_InitStructure);
I2C_Cmd(I2C1, ENABLE);
}
```
然后在主函数中调用这两个函数即可初始化I2C。
接下来是读取数据的函数:
```c
uint8_t I2C_ReadOneByte(uint8_t I2C_Addr,uint8_t addr)
{
uint8_t result=0;
I2C_GenerateSTART(I2C1, ENABLE);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C1, I2C_Addr, I2C_Direction_Transmitter);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
I2C_SendData(I2C1, addr);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_GenerateSTART(I2C1, ENABLE);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C1, I2C_Addr, I2C_Direction_Receiver);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));
I2C_AcknowledgeConfig(I2C1, DISABLE);
I2C_GenerateSTOP(I2C1, ENABLE);
while(I2C_GetFlagStatus(I2C1, I2C_FLAG_RXNE) == RESET);
result=I2C_ReceiveData(I2C1);
return result;
}
int16_t I2C_ReadTwoByte(uint8_t I2C_Addr,uint8_t addr)
{
uint8_t H_byte=0;
uint8_t L_byte=0;
int16_t result=0;
H_byte=I2C_ReadOneByte(I2C_Addr,addr);
L_byte=I2C_ReadOneByte(I2C_Addr,addr+1);
result=((int16_t)H_byte<<8)|L_byte;
return result;
}
```
其中`I2C_ReadOneByte()`函数是读取一个字节的数据,`I2C_ReadTwoByte()`函数是读取两个字节的数据。
最后,在主函数中调用这两个函数即可读取MPU6050陀螺仪芯片的数据。
希望这个程序对你有所帮助!
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