Posted on January 27, 2017 at 23:28Hi.
I have problem by SPI that is :
When i want to send data for example in slave mode during receiving from master. data will corrupt ( if i just receive data and send to UART it works fine). I think it happens Because both TXE and RXNE occurs at same time and when MCU is in ISR data will rewrite in data register before transfer to Tx/Rx buffer . How can i Handle this in continuous transmission ? . it's my code :
-------------------------------------------------------------------------↓
//Slave Part
void
SPI2_IRQHandler(
void
){
static char counter =
0x40
;
if
( SPI2->SR & SPI_SR_RXNE ) {
sendToUart(SPI2->DR);
}
if
( SPI2->SR & SPI_SR_TXE ) {
SPI2->DR = counter;
counter++;
if(counter >=
0x5B
)counter=
0x40
;
}
}
-------------------------------------------------------------------------↑
