I have 2 slave i2c interfaced with master , Im working with HAL_I2C_MasterRxCpltCallback
I want select the slaves based with slave address , then I using the register hi2c1.Instance->CR2 & I2C_CR2_SADD for select them :
In the main I have :
// slave 1
HAL_I2C_Master_Transmit_IT(&hi2c1, I2C_ADDRESS_1, ®Address, 1);
// slave 2
HAL_I2C_Master_Transmit_IT(&hi2c1, I2C_ADDRESS_2, ®Address, 1);
void HAL_I2C_MasterRxCpltCallback(I2C_HandleTypeDef *hi2c)
{
{
if (hi2c1.Instance->CR2 & I2C_CR2_SADD== I2C_ADDRESS_1)
{
......
}
if (hi2c1.Instance->CR2 & I2C_CR2_SADD== I2C_ADDRESS_2)
{
......
}
}
My problem is that not work :
In debug the value of (hi2c1.Instance->CR2 & I2C_CR2_SADD) is fixed to zero .
I would like to know where I'm wrong, and above all .,
I would like to know where I am wrong, and above all I thought that in the main when I decide to transmit using HAL_I2C_Master_Transmit_IT to that particular address the field (hi2c1.Instance->CR2 & I2C_CR2_SADD)would be filled with that value(I2C_ADDRESS_1 or I2C_ADDRESS_2).
Can I have a working code.
THANKS
