请问如何使用stm32的硬件I2C读写HMC5883L?
请问如何使用stm32的硬件I2C读写HMC5883L?去参考下基于STM32 的硬件 I2C 读取 MPU6050 数据，关于STM32f103 的硬件IIC I2C 调试心得，关于HMC5883L驱动书写及调试的总结，HMC5883L手册总结与经验分析 详解，调试hmc5883l,为什么i2c发送字节是这么写，等文章， 附上讀寫EEPROM的代碼，你再試著去改成HMC5883L的讀寫方式
I2C_HandleTypeDef hi2c_eeprom;
void MX_I2C_EEPROM_Init(void)
{
hi2c_eeprom.Instance = EEPROM_I2Cx;
hi2c_eeprom.Init.ClockSpeed = I2C_SPEEDCLOCK;
hi2c_eeprom.Init.DutyCycle = I2C_DUTYCYCLE;
hi2c_eeprom.Init.OwnAddress1 = 0;
hi2c_eeprom.Init.AddressingMode= I2C_ADDRESSINGMODE_7BIT;
hi2c_eeprom.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c_eeprom.Init.OwnAddress2 = 0;
hi2c_eeprom.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c_eeprom.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
HAL_I2C_Init(&hi2c_eeprom);
}
void HAL_I2C_MspInit(I2C_HandleTypeDef* hi2c)
{
GPIO_InitTypeDef GPIO_InitStruct;
if(hi2c->Instance==EEPROM_I2Cx)
{
EEPROM_I2C_RCC_CLK_ENABLE();
EEPROM_I2C_GPIO_CLK_ENABLE();
/**I2C1 GPIO Configuration
PB6 ------> I2C1_SCL
PB7 ------> I2C1_SDA
*/
GPIO_InitStruct.Pin = EEPROM_I2C_SCL_PIN|EEPROM_I2C_SDA_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(EEPROM_I2C_GPIO_PORT, &GPIO_InitStruct);
}
}
void I2C_EEPROM_WriteByte(uint16_t Addr, uint8_t Reg, uint8_t Value)
{
HAL_StatusTypeDef status = HAL_OK;
status = HAL_I2C_Mem_Write(&hi2c_eeprom, Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT, &Value, 1, I2cxTimeout);
if(status != HAL_OK)
{
I2C_EEPROM_Error();
}
}
uint8_t I2C_EEPROM_Readbyte(uint16_t Addr, uint8_t Reg)
{
HAL_StatusTypeDef status = HAL_OK;
uint8_t value = 0;
status = HAL_I2C_Mem_Read(&hi2c_eeprom, Addr, Reg, I2C_MEMADD_SIZE_8BIT, &value, 1, I2cxTimeout);
if(status != HAL_OK)
{
I2C_EEPROM_Error();
}
return value;
}
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