/**
* @brief Checks whether the specified I2C interrupt has occurred or not.
* @param I2Cx: where x can be 1 or 2 to select the I2C peripheral.
* @param I2C_IT: specifies the interrupt source to check.
* This parameter can be one of the following values:
* @arg I2C_IT_SMBALERT: SMBus Alert flag
* @arg I2C_IT_TIMEOUT: Timeout or Tlow error flag
* @arg I2C_IT_PECERR: PEC error in reception flag
* @arg I2C_IT_OVR: Overrun/Underrun flag (Slave mode)
* @arg I2C_IT_AF: Acknowledge failure flag
* @arg I2C_IT_ARLO: Arbitration lost flag (Master mode)
* @arg I2C_IT_BERR: Bus error flag
* @arg I2C_IT_TXE: Data register empty flag (Transmitter)
* @arg I2C_IT_RXNE: Data register not empty (Receiver) flag
* @arg I2C_IT_STOPF: Stop detection flag (Slave mode)
* @arg I2C_IT_ADD10: 10-bit header sent flag (Master mode)
* @arg I2C_IT_BTF: Byte transfer finished flag
* @arg I2C_IT_ADDR: Address sent flag (Master mode) "ADSL"
* Address matched flag (Slave mode)"ENDAD"
* @arg I2C_IT_SB: Start bit flag (Master mode)
* @retval The new state of I2C_IT (SET or RESET).
*/
ITStatus I2C_GetITStatus(I2C_TypeDef* I2Cx, uint32_t I2C_IT)
{
ITStatus bitstatus = RESET;
uint32_t enablestatus = 0;
/* Check the parameters */
assert_param(IS_I2C_ALL_PERIPH(I2Cx));
assert_param(IS_I2C_GET_IT(I2C_IT));
/* Check if the interrupt source is enabled or not */
enablestatus = (uint32_t)(((I2C_IT & ITEN_Mask) >> 16) & (I2Cx->CR2)) ;
/* Get bit[23:0] of the flag */
I2C_IT &= FLAG_Mask;
/* Check the status of the specified I2C flag */
if (((I2Cx->SR1 & I2C_IT) != (uint32_t)RESET) && enablestatus)
{
/* I2C_IT is set */
bitstatus = SET;
}
else
{
/* I2C_IT is reset */
bitstatus = RESET;
}
/* Return the I2C_IT status */
return bitstatus;
}
/*******************************************************************************
* Function Name : I2C_GetITStatus
* Description : Checks whether the specified I2C interrupt has occurred or not.
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral.
* - I2C_IT: specifies the interrupt source to check.
* This parameter can be one of the following values:
* - I2C_IT_SMBALERT: SMBus Alert flag
* - I2C_IT_TIMEOUT: Timeout or Tlow error flag
* - I2C_IT_PECERR: PEC error in reception flag
* - I2C_IT_OVR: Overrun/Underrun flag (Slave mode)
* - I2C_IT_AF: Acknowledge failure flag
* - I2C_IT_ARLO: Arbitration lost flag (Master mode)
* - I2C_IT_BERR: Bus error flag
* - I2C_IT_TXE: Data register empty flag (Transmitter)
* - I2C_IT_RXNE: Data register not empty (Receiver) flag
* - I2C_IT_STOPF: Stop detection flag (Slave mode)
* - I2C_IT_ADD10: 10-bit header sent flag (Master mode)
* - I2C_IT_BTF: Byte transfer finished flag
* - I2C_IT_ADDR: Address sent flag (Master mode) “ADSL”
* Address matched flag (Slave mode)”ENDAD”
* - I2C_IT_SB: Start bit flag (Master mode)
* Output : None
* Return : The new state of I2C_IT (SET or RESET).
*******************************************************************************/
ITStatus I2C_GetITStatus(I2C_TypeDef* I2Cx, u32 I2C_IT)
{
ITStatus bitstatus = RESET;
u32 i2cstatus = 0;
u32 Flag1 = 0, Flag2 = 0;
/* Check the parameters */
assert_param(IS_I2C_GET_IT(I2C_IT));
/* Read the I2Cx status register */
Flag1 = I2Cx->SR1;
Flag2 = I2Cx->SR2;
Flag2 = (Flag2 & I2C_FLAG_Mask) << 16;
/* Get the I2C status value */
i2cstatus = Flag1 | Flag2;
/* Get bit[27:0] of the flag */
I2C_IT &= I2C_FLAG_Mask;
/* Check the status of the specified I2C flag */
if ((i2cstatus & I2C_IT) != (u32)RESET)
{
/* I2C_IT is set */
bitstatus = SET;
}
else
{
/* I2C_IT is reset */
bitstatus = RESET;
}
/* Return the I2C_IT status */
return bitstatus;
}
