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Qout in 1m tick
uint32_t tick_i2c = 0 ;
uint16_t ReadQout()
{
if (i2c_state == I2C_INIT)
{
if (tick_i2c <= 300)
{
HAL_GPIO_WritePin(CmdQout_GPIO_Port, CmdQout_Pin, GPIO_PIN_SET);
}
else if (tick_i2c <= 400)
{
HAL_GPIO_WritePin(CmdQout_GPIO_Port, CmdQout_Pin, GPIO_PIN_RESET);
}
else
{
uint8_t status = HAL_I2C_Master_Transmit(&hi2c1, SFM3219_ADDRESS<<1, cmd, 3, 1000);
if (status == HAL_OK)
{
i2c_state = I2C_READ;
i2c_retry = 0;
}
else
{
HAL_UART_Transmit(&huart3, "INIT_ERROR\n\0", strlen("INIT_ERROR\n\0"), 100);
}
tick_i2c = 0;
}
tick_i2c++;
}
else if (i2c_state == I2C_READ)
{
uint8_t i2c_rcv_buff[3] = {0x00, 0x00, 0x00};
uint8_t status = HAL_I2C_Master_Receive(&hi2c1, SFM3219_ADDRESS<<1, i2c_rcv_buff, 3, 1000);
if (status == HAL_OK)
{
if (SF04_CheckCrc (i2c_rcv_buff, 2, i2c_rcv_buff[2]) != CHECKSUM_ERROR)
{
rawQout = (int16_t)(((uint16_t)i2c_rcv_buff[0])<<8 | i2c_rcv_buff[0]);
}
else
{
HAL_UART_Transmit(&huart3, "CHECKSUM_ERROR\n\0", strlen("CHECKSUM_ERROR\n\0"), 100);
i2c_retry++;
}
}
else
{
HAL_UART_Transmit(&huart3, "READING_ERROR\n\0", strlen("READING_ERROR\n\0"), 100);
i2c_retry++;
}
if (i2c_retry >= 10)
{
tick_i2c = 0;
i2c_state = I2C_INIT;
}
}
return rawQout ;
}
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