Paulo Bruckmann / BurstSPI

Added support for STM32F103RB

BurstSPI_STM32F4.cpp@14:8872ab64789c, 2020-04-24 (annotated)

Committer:
peekpt
Date:
Fri Apr 24 11:09:03 2020 +0000
Revision:
14:8872ab64789c
Parent:
13:bc069279eb37 
Added support for STM32F103RB

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Sissors 13:bc069279eb37 1 #if defined(TARGET_STM32F4)
Sissors 13:bc069279eb37 2 #include "BurstSPI.h"
Sissors 13:bc069279eb37 3
Sissors 13:bc069279eb37 4 void BurstSPI::fastWrite(int data) {
Sissors 13:bc069279eb37 5
Sissors 13:bc069279eb37 6 SPI_TypeDef *spi = (SPI_TypeDef *)(_spi.spi);
Sissors 13:bc069279eb37 7 // Check if data is transmitted
Sissors 13:bc069279eb37 8 while ((spi->SR & SPI_SR_TXE) == 0);
Sissors 13:bc069279eb37 9 spi->DR = data;
Sissors 13:bc069279eb37 10 }
Sissors 13:bc069279eb37 11
Sissors 13:bc069279eb37 12 void BurstSPI::clearRX( void ) {
Sissors 13:bc069279eb37 13 //Check if the RX buffer is busy
Sissors 13:bc069279eb37 14 SPI_TypeDef *spi = (SPI_TypeDef *)(_spi.spi);
Sissors 13:bc069279eb37 15 //While busy, keep checking
Sissors 13:bc069279eb37 16 while (spi->SR & SPI_SR_BSY){
Sissors 13:bc069279eb37 17 // Check RX buffer readable
Sissors 13:bc069279eb37 18 while ((spi->SR & SPI_SR_RXNE) == 0);
Sissors 13:bc069279eb37 19 int dummy = spi->DR;
Sissors 13:bc069279eb37 20 }
Sissors 13:bc069279eb37 21 }
Sissors 13:bc069279eb37 22 #endif
Sissors 13:bc069279eb37 23