/**
* @brief Selects the specified I2C PEC position.
* @param I2Cx: where x can be 1 or 2 to select the I2C peripheral.
* @param I2C_PECPosition: specifies the PEC position.
* This parameter can be one of the following values:
* @arg I2C_PECPosition_Next: indicates that the next byte is PEC
* @arg I2C_PECPosition_Current: indicates that current byte is PEC
*
* @note This function configures the same bit (POS) as I2C_NACKPositionConfig()
* but is intended to be used in SMBUS mode while I2C_NACKPositionConfig()
* is intended to used in I2C mode.
*
* @retval None
*/
void I2C_PECPositionConfig(I2C_TypeDef* I2Cx, uint16_t I2C_PECPosition) {
/* Check the parameters */
assert_param(IS_I2C_ALL_PERIPH(I2Cx));
assert_param(IS_I2C_PEC_POSITION(I2C_PECPosition));
if(I2C_PECPosition == I2C_PECPosition_Next) {
/* Next byte in shift register is PEC */
I2Cx->CR1 |= I2C_PECPosition_Next;
} else {
/* Current byte in shift register is PEC */
I2Cx->CR1 &= I2C_PECPosition_Current;
}
}
/*******************************************************************************
* Function Name : I2C_PECPositionConfig
* Description : Selects the specified I2C PEC position.
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral.
* - I2C_PECPosition: specifies the PEC position.
* This parameter can be one of the following values:
* - I2C_PECPosition_Next: PEC bit indicates that current
* byte is PEC
* - I2C_PECPosition_Current: PEC bit indicates that the
* next byte is PEC
* Output : None
* Return : None
*******************************************************************************/
void I2C_PECPositionConfig(I2C_TypeDef* I2Cx, u16 I2C_PECPosition)
{
/* Check the parameters */
assert_param(IS_I2C_PEC_POSITION(I2C_PECPosition));
if (I2C_PECPosition == I2C_PECPosition_Next)
{
/* PEC indicates that the next byte in shift register is PEC */
I2Cx->CR1 |= I2C_PECPosition_Next;
}
else
{
/* PEC indicates that the current byte in shift register is PEC */
I2Cx->CR1 &= I2C_PECPosition_Current;
}
}