/* I2C Slave with Interrupt Init */
void I2C_SlaveWithInterrupt_Init(I2C_TypeDef* I2Cx, uint32_t freq, int SlaveAddr, pin_t scl, pin_t sda){
NVIC_InitTypeDef i2c_slave_nvic;
uint8_t _i2c_er_irq;
I2C_Master_Init(I2Cx, freq, scl, sda);
I2C_Slave_Mode(I2Cx, 1);
I2C_Slave_Address(I2Cx, SlaveAddr);
/* Configure the Priority Group to 1 bit */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
if(I2Cx == I2C1){
_i2c_er_irq = I2C1_ER_IRQn;
i2c_slave_nvic.NVIC_IRQChannel = I2C1_EV_IRQn;
}else if(I2Cx == I2C2){
_i2c_er_irq = I2C2_ER_IRQn;
i2c_slave_nvic.NVIC_IRQChannel = I2C2_EV_IRQn;
}
i2c_slave_nvic.NVIC_IRQChannelPreemptionPriority = 1;
i2c_slave_nvic.NVIC_IRQChannelSubPriority = 0;
i2c_slave_nvic.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&i2c_slave_nvic);
i2c_slave_nvic.NVIC_IRQChannel = _i2c_er_irq;
NVIC_Init(&i2c_slave_nvic);
/* Enable Error Interrupt */
I2C_ITConfig(I2Cx, (I2C_IT_ERR | I2C_IT_EVT | I2C_IT_BUF), ENABLE);
}
//*********************************************************
void I2C_Main()
{
char i;
#if Slave_Mode == 1
if(I2C->SlaveGO)
{
I2C->SlaveGO=0;
I2C_Slave_Mode();
SSPIE=1;
if(I2C->SlaveTxGO)
{
I2C->SlaveTxGO=0;
SS1=0;
I2C->SS=0;
}
if(I2C->SlaveRxGO)
{
I2C->SlaveRxGO=0;
I2C_SetData(0);
}
LED2=~LED2;
}
#endif
#if Master_Mode == 1
if(I2C->MasterRxGO)
{
I2C->MasterRxGO=0;
I2C_Master_Reception();
TMain->Test=1;
LED2=~LED2;
#if UART_use == 1
for(i=0;i<32;i++)
{
UART->TxData[i]=I2C->BufferReader[i];
}
UART->TxGO=1;
#endif
}
else
{
if(SS1)
{
if(!I2C->SS)
{
I2C->SS=1;
I2C->MasterRxGO=1;
}
}
else
{
if(I2C->SS)
{
I2C->SS=0;
}
if(I2C->MasterTxGO)
{
I2C->MasterTxGO=0;
I2C_Master_Transmission();
}
}
}
#endif
}
/* I2C Slave Init */
void I2C_Slave_Init(I2C_TypeDef* I2Cx, uint32_t freq, int SlaveAddr, pin_t scl, pin_t sda){
I2C_Master_Init(I2Cx, freq, scl, sda);
I2C_Slave_Mode(I2Cx, 1);
I2C_Slave_Address(I2Cx, SlaveAddr);
}
