Johannes Stratmann
Fast SPI write, added LPC812 Target
Diff: BurstSPI_STM32F4.cpp
- Revision:
- 13:bc069279eb37
- Child:
- 15:8241b7d84ad2
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/BurstSPI_STM32F4.cpp Sat May 16 11:09:59 2015 +0000
@@ -0,0 +1,23 @@
+#if defined(TARGET_STM32F4)
+#include "BurstSPI.h"
+
+void BurstSPI::fastWrite(int data) {
+
+ SPI_TypeDef *spi = (SPI_TypeDef *)(_spi.spi);
+ // Check if data is transmitted
+ while ((spi->SR & SPI_SR_TXE) == 0);
+ spi->DR = data;
+}
+
+void BurstSPI::clearRX( void ) {
+ //Check if the RX buffer is busy
+ SPI_TypeDef *spi = (SPI_TypeDef *)(_spi.spi);
+ //While busy, keep checking
+ while (spi->SR & SPI_SR_BSY){
+ // Check RX buffer readable
+ while ((spi->SR & SPI_SR_RXNE) == 0);
+ int dummy = spi->DR;
+ }
+}
+#endif
+