Jack Berkhout / BurstSPI

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Show/hide line numbers BurstSPI_STM32F4.cpp Source File

BurstSPI_STM32F4.cpp

00001 //#if (defined(TARGET_STM32F4) || defined(TARGET_STM32F7))
00002 #if defined(TARGET_STM32F4)
00003 #include "BurstSPI.h"
00004  
00005 void BurstSPI::fastWrite(int data) {
00006     
00007     SPI_TypeDef *spi = (SPI_TypeDef *)(_spi.spi);
00008     // Check if data is transmitted
00009     while ((spi->SR & SPI_SR_TXE) == 0);
00010     spi->DR = data;
00011 }
00012     
00013 void BurstSPI::clearRX( void ) {
00014     //Check if the RX buffer is busy
00015     SPI_TypeDef *spi = (SPI_TypeDef *)(_spi.spi);
00016     //While busy, keep checking
00017     while (spi->SR & SPI_SR_BSY){   
00018         // Check RX buffer readable
00019         while ((spi->SR & SPI_SR_RXNE) == 0);
00020         int dummy = spi->DR;
00021     }
00022 }
00023 #endif
00024
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