/**
* @brief This function handles I2Cx event interrupt request.
* @param None
* @retval None
*/
void I2Cx_EV_IRQHandler(void)
{
#if defined (I2C_SLAVE)
/* Get Last I2C Event */
Event = I2C_GetLastEvent(I2Cx);
switch (Event)
{
/*****************************************************************************/
/* Slave Transmitter Events */
/* */
/* ***************************************************************************/
/* Check on EV1 */
case I2C_EVENT_SLAVE_TRANSMITTER_ADDRESS_MATCHED:
I2C_SendData(I2Cx, TxBuffer[Tx_Idx++]);
/* Enable I2C event interrupt */
I2C_ITConfig(I2Cx, I2C_IT_BUF, ENABLE);
break;
/* Check on EV3 */
case I2C_EVENT_SLAVE_BYTE_TRANSMITTING:
case I2C_EVENT_SLAVE_BYTE_TRANSMITTED:
if (Tx_Idx < NbrOfDataToSend)
I2C_SendData(I2Cx, TxBuffer[Tx_Idx++]);
else
/* Disable I2C event interrupt */
I2C_ITConfig(I2Cx, I2C_IT_EVT | I2C_IT_BUF, DISABLE);
break;
default:
break;
}
#endif /* I2C_SLAVE*/
#if defined (I2C_MASTER)
/*****************************************************************************/
/* Master Receiver */
/* */
/* ***************************************************************************/
#ifdef I2C_10BITS_ADDRESS
/* Check on SB Flag and clear it */
if(I2C_GetITStatus(I2Cx, I2C_IT_SB)== SET)
{
if (Send_HeaderStatus == 0x00)
{
/* Send Header to Slave for write */
I2C_SendData(I2Cx, HEADER_ADDRESS_Write);
Send_HeaderStatus = 0x01;
GenerateStartStatus = 0x01;
}
else
{
/* Send Header to Slave for Read */
I2C_SendData(I2Cx, HEADER_ADDRESS_Read);
Send_HeaderStatus = 0x00;
if (NumberOfByteToReceive == 0x03)
{
/* Disable buffer Interrupts */
I2C_ITConfig(I2Cx, I2C_IT_BUF , DISABLE);
}
else
{
/* Enable buffer Interrupts */
I2C_ITConfig(I2Cx, I2C_IT_BUF , ENABLE);
}
}
}
/* Check on ADD10 Flag */
else if(I2C_GetITStatus(I2Cx, I2C_IT_ADD10)== SET)
{
/* Send slave Address */
I2C_Send7bitAddress(I2Cx, (uint8_t)SLAVE_ADDRESS, I2C_Direction_Transmitter);
}
#else /* I2C_7BITS_ADDRESS */
/* Check on EV5 */
if(I2C_GetITStatus(I2Cx, I2C_IT_SB)== SET)
{
/* Send slave Address for read */
I2C_Send7bitAddress(I2Cx, SLAVE_ADDRESS, I2C_Direction_Receiver);
if (NumberOfByteToReceive == 0x03)
{
/* Disable buffer Interrupts */
I2C_ITConfig(I2Cx, I2C_IT_BUF , DISABLE);
}
else
{
/* Enable buffer Interrupts */
I2C_ITConfig(I2Cx, I2C_IT_BUF , ENABLE);
}
}
#endif /* I2C_10BITS_ADDRESS */
else if(I2C_GetITStatus(I2Cx, I2C_IT_ADDR)== SET)
{
if (NumberOfByteToReceive == 1)
{
I2C_AcknowledgeConfig(I2Cx, DISABLE);
}
/* Clear ADDR Register */
(void)(I2Cx->SR1);
(void)(I2Cx->SR2);
if (GenerateStartStatus == 0x00)
{
if (NumberOfByteToReceive == 1)
{
I2C_GenerateSTOP(I2Cx, ENABLE);
}
if (NumberOfByteToReceive == 2)
{
I2C_AcknowledgeConfig(I2Cx, DISABLE);
I2C_PECPositionConfig(I2Cx, I2C_PECPosition_Next);
/* Disable buffer Interrupts */
I2C_ITConfig(I2Cx, I2C_IT_BUF , DISABLE);
}
}
#ifdef I2C_10BITS_ADDRESS
if (GenerateStartStatus == 0x01)
{
/* Repeated Start */
I2C_GenerateSTART(I2Cx, ENABLE);
GenerateStartStatus = 0x00;
}
#endif /* I2C_10BITS_ADDRESS */
}
else if((I2C_GetITStatus(I2Cx, I2C_IT_RXNE)== SET)&&(I2C_GetITStatus(I2Cx, I2C_IT_BTF)== RESET))
{
/* Store I2C received data */
RxBuffer[Rx_Idx++] = I2C_ReceiveData (I2Cx);
NumberOfByteToReceive--;
if (NumberOfByteToReceive == 0x03)
{
/* Disable buffer Interrupts */
I2C_ITConfig(I2Cx, I2C_IT_BUF , DISABLE);
}
if (NumberOfByteToReceive == 0x00)
{
/* Disable Error and Buffer Interrupts */
I2C_ITConfig(I2Cx, (I2C_IT_EVT | I2C_IT_BUF), DISABLE);
}
}
/* BUSY, MSL and RXNE flags */
else if(I2C_GetITStatus(I2Cx, I2C_IT_BTF)== SET)
{
/* if Three bytes remaining for reception */
if (NumberOfByteToReceive == 3)
{
I2C_AcknowledgeConfig(I2Cx, DISABLE);
/* Store I2C received data */
RxBuffer[Rx_Idx++] = I2C_ReceiveData (I2Cx);
NumberOfByteToReceive--;
}
else if (NumberOfByteToReceive == 2)
{
I2C_GenerateSTOP(I2Cx, ENABLE);
/* Store I2C received data */
RxBuffer[Rx_Idx++] = I2C_ReceiveData (I2Cx);
NumberOfByteToReceive--;
/* Store I2C received data */
RxBuffer[Rx_Idx++] = I2C_ReceiveData (I2Cx);
NumberOfByteToReceive--;
/* Disable Error and Buffer Interrupts */
I2C_ITConfig(I2Cx, (I2C_IT_EVT | I2C_IT_BUF), DISABLE);
}
else
{
/* Store I2C received data */
RxBuffer[Rx_Idx++] = I2C_ReceiveData (I2Cx);
NumberOfByteToReceive--;
}
}
#endif /* I2C_MASTER*/
}
/*************************************************************
* I2C initialization code template
**************************************************************/
void I2C1_Init()
{
#if (STRCMP($interruptEn$, 0) == 0)
NVIC_InitTypeDef NVIC_InitStructure;
#endif
I2C_InitTypeDef I2C_InitStructure;
//PUT_A_NEW_LINE_HERE
//
// Enable I2C clock
//
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);
#if (STRCMP($SCL1$, DISABLE) == 0 || STRCMP($SDA1$, DISABLE) == 0)
//PUT_A_NEW_LINE_HERE
//
// Enable AFIO and I2C clock
//
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
//PUT_A_NEW_LINE_HERE
//
// I2C SCL pin remap to PB8, I2C SDA pin remap to PB8
//
GPIO_PinRemapConfig(GPIO_Remap_I2C1,ENABLE);
#endif
//PUT_A_NEW_LINE_HERE
//
// I2C config
//
I2C_InitStructure.I2C_Mode = $mode$;
I2C_InitStructure.I2C_DutyCycle = $dutyCycle$;
I2C_InitStructure.I2C_OwnAddress1 = $ownAddress$;
I2C_InitStructure.I2C_Ack = $ack$;
I2C_InitStructure.I2C_AcknowledgedAddress = $ackAddress$;
I2C_InitStructure.I2C_ClockSpeed = $speed$;
I2C_Init($I2C$, &I2C_InitStructure);
//PUT_A_NEW_LINE_HERE
//
// Enable I2C
//
I2C_Cmd($I2C$, ENABLE);
I2C_Init($I2C$, &I2C_InitStructure);
#if (STRCMP($interruptEn$, 0) == 0)
//PUT_A_NEW_LINE_HERE
//
// Enable I2C DualAddress
//
I2C_OwnAddress2Config($I2C$, $ownAddress2$);
I2C_DualAddressCmd($I2C$, ENABLE);
#endif
#if($modeSelect$)
//PUT_A_NEW_LINE_HERE
//
// Transmits the address byte to select the slave device
//
I2C_Send7bitAddress($I2C$, $slaveAddress$, $transferDirection$);
#endif
#if(STRCMP($GenCallEn$, DISABLE) == 0)
//PUT_A_NEW_LINE_HERE
//
// Enables I2C1 general call feature
//
I2C_GeneralCallCmd($I2C$, ENABLE);
#endif
#if(STRCMP($StrchClkEn$, DISABLE) == 0)
//PUT_A_NEW_LINE_HERE
//
// Enables I2C1 Clock stretching
//
I2C_StretchClockCmd($I2C$, ENABLE);
#endif
#if (STRCMP($interruptEn$, 0) == 0)
//PUT_A_NEW_LINE_HERE
//
// Interrupt config
//
I2C_ITConfig($I2C$, $interruptEn$, ENABLE);
NVIC_InitStructure.NVIC_IRQChannel = I2C1_EV_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
#endif
#if($pecTransmitEn$)
//PUT_A_NEW_LINE_HERE
//
// PEC Transmit Enable
//
#if($pecTransmitEn$)
I2C_TransmitPEC($I2C$, ENABLE);
#endif
#if($pecCalculateEn$)
I2C_CalculatePEC($I2C$, ENABLE);
#endif
#if(STRCMP($pecPosition$, I2C_PECPosition_Next))
I2C_PECPositionConfig($I2C$, $pecPosition$);
#endif
#if(STRCMP($pecPosition$, I2C_PECPosition_Current))
I2C_PECPositionConfig($I2C$, $pecPosition$);
#endif
#endif
#if(!STRCMP($mode$, I2C_Mode_I2C))
//PUT_A_NEW_LINE_HERE
//
// PEC Transmit Enable
//
I2C_SMBusAlertConfig($I2C$, $SMBusAlertCfg$);
I2C_ARPCmd($I2C$, $ARPEn$);
#endif
}
