HT32: SPI: fix data transmission

Data transmission should occur when SPI shift register and TX buffer are empty. This is done by checking TXE flag instead of TXBE flag. Not sure why, but this fixes transmission issues on HT32F1654.
hansemro · Dec 22, 2022 · 149fd60 · 149fd60
1 parent b3fc9f7
commit 149fd60
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/os/hal/ports/HT32/LLD/SPIv1/hal_spi_lld.c b/os/hal/ports/HT32/LLD/SPIv1/hal_spi_lld.c
@@ -76,7 +76,7 @@ static void spi_lld_tx(SPIDriver * const spip) {
 
     while (spip->txcnt) {
         sr = spip->SPI->SR;
-        if ((sr & SPI_SR_TXBE) == 0)
+        if ((sr & SPI_SR_TXE) == 0)
             return;
         if (spip->txptr) {
             fd = *spip->txptr++;