Duplicate - merged.
Please don't start multiple threads on the same topic.
Hello dear friends,
I have an STM32L433 project written using the Low Layer (LL) library, and I’m trying to integrate the CLRC663 NFC reader into it. However, I’ve been struggling to convert the HAL_SPI_TransmitReceive function into its equivalent using only LL functions. I cannot use the HAL library at all, since there are other slave devices in the system and compatibility issues arise.
I’ve searched the internet and found some LL-based SPI examples, some of which I’ve attached screenshots of, but unfortunately, none of them worked. What I need is a fully functional equivalent of HAL_SPI_TransmitReceive written using only LL. Where can I find such an implementation?
Any help would be greatly appreciated.
WORKING CODE:
void mfrc630_SPI_transfer(const uint8_t* tx, uint8_t* rx, uint16_t len)
{
switch(HAL_SPI_TransmitReceive(&hspi2, tx, rx, len, 1000))
{
case HAL_OK:
// Communication is completed, dont do anything.
break;
case HAL_TIMEOUT:
printf("Timeout\n");
case HAL_ERROR:
printf("Some error\n");
Error_Handler();
break;
default:
break;
}
}
THE CODE THAT DOESN'T WORK AND I TRY TO WRITE WITH LL:
uint8_t SPI2_ByteSend (uint8_t val)
{
LL_SPI_TransmitData8(SPI2, val);
while (LL_SPI_IsActiveFlag_BSY(SPI2));
return(LL_SPI_ReceiveData8(SPI2));
}
void mfrc630_SPI_transfer(const uint8_t* tx, uint8_t* rx, uint16_t len)
{
mfrc630_SPI_select();
for (uint16_t i = 0; i < len; i++) {
// SPI2_ByteSend her gönderilen byte'in karsiliginda dönen byte'i döner
rx[i] = SPI2_ByteSend(tx[i]);
}
mfrc630_SPI_unselect();
}
PLEASE HELP!
