Hi
I have (had) a working project with an EXT interrupt which was wired to the CS pin of a SPI bus.
Although it was working I had various bugs, particularly a timer interrupt, which TDK helped me resolve earlier.
I've had great success with SPI master, full duplex on another project, so I thought I would try the Hardware NSS combined with interrupt on that SPI port.
Here's what I'm doing - probably not the best way:
inside my timer interrupt callback:
if (htim->Instance == TIM2) {
HAL_GPIO_TogglePin(RUNLED_GPIO_Port, RUNLED_Pin);
if (SPI_Flag == 0) {
if (HAL_SPI_Receive_IT(&hspi1, (uint8_t*)(&h743_spi_rx_), 6) != HAL_OK) {
Error_Handler();
}
}
And I'm using this callback:
void HAL_SPI_RxCpltCallback(SPI_HandleTypeDef *hspi)
It does the job fine, however, it only does it once.
Note the Flag I have in the timer interrupt, this is to make sure I dont accidentally call another SPI IT if I have already one pending.
I was doing some digging online and found people saying the IRQ needs to be cleared. It mostly applied to DMA stuff. I wonder if it might my problem here?
Cheers
