Posted on October 24, 2016 at 06:24Dear All,
Kindly help me to SPI receive only mode in this structure when I am using SPI1_IRQHandler, is it proper code to apply?
void SPI1_IRQHandler(void)
{
//* SPI in Slave Receiver mode--------------------------------------- */
if (SPI_I2S_GetITStatus(SPI1, SPI_I2S_IT_RXNE) == SET)
{
/*------- Master --> Slave */
if (CmdStatus == 0x00)
{
CmdReceived = SPI1_RXDR8;
Rx_Idx=0;
Tx_Idx=0;
switch(CmdReceived){
case 0x01:
receiveSPI=0x01;
CmdStatus = 0x01;
StartSend=0x00;
Cpt_Spi=0;
break;
case 0x81 :
SendSPI=0x01;
CmdStatus = 0x01;
Spi_Case=0x01;
if (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) != RESET)//wait for TXE = 1
SPI1_RXDR8=SPI_Tx1[Tx_Idx++]; // prepare the first byte to be send when the clock is received
break;
case 0x84:
SendSPI=0x01;
Spi_Case=0x02;
CmdStatus = 0x01;
if (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) != RESET)
SPI1_RXDR8=SPI_Tx2[Tx_Idx++]; // // prepare the first byte to be send when the clock is received
}
break;
default:
SendSPI=0x00;
Spi_Case=0x00;
CmdStatus = 0x00;
receiveSPI=0x00;
break;
}// end of switch
}// end of cmdStatus =0x00
else
{
if(receiveSPI) // in this case the slave receives data from the master
{
SPI_Rx[Rx_Idx++] = SPI1_RXDR8; // the array sent by the Master in the receive mode
} // end of receiveSPI
Before that I have been using following functions,
1. static void MX_DMA_Init(void)
2.static void MX_SPI1_Init(void)
3.void DMA_beginWrite()
4.void DMA1_Stream3_IRQHandler()
5. void SysTick_Handler(void)
