sebastien videau / BurstSPI

Lib BurstSPI give access to fastWrite function and clearRX function, this lib is now compatible with Nucleo L152RE board

Fork of BurstSPI by Erik -

BurstSPI.cpp@0:600eecd89a78, 2013-01-03 (annotated)

Committer:
Sissors
Date:
Thu Jan 03 09:14:10 2013 +0000
Revision:
0:600eecd89a78
v1.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Sissors 0:600eecd89a78 1 #include "BurstSPI.h"
Sissors 0:600eecd89a78 2
Sissors 0:600eecd89a78 3 BurstSPI::BurstSPI(PinName mosi, PinName miso, PinName sclk) : SPI(mosi, miso, sclk){
Sissors 0:600eecd89a78 4
Sissors 0:600eecd89a78 5 }
Sissors 0:600eecd89a78 6
Sissors 0:600eecd89a78 7
Sissors 0:600eecd89a78 8 void BurstSPI::fastWrite(int data) {
Sissors 0:600eecd89a78 9 //Wait until FIFO has space
Sissors 0:600eecd89a78 10 while(((_spi.spi->SR) & 0x02) == 0);
Sissors 0:600eecd89a78 11
Sissors 0:600eecd89a78 12 //transmit data
Sissors 0:600eecd89a78 13 _spi.spi->DR = data;
Sissors 0:600eecd89a78 14 }
Sissors 0:600eecd89a78 15
Sissors 0:600eecd89a78 16 void BurstSPI::setFormat( void ) {
Sissors 0:600eecd89a78 17 format(_bits, _mode);
Sissors 0:600eecd89a78 18 frequency(_hz);
Sissors 0:600eecd89a78 19 }
Sissors 0:600eecd89a78 20
Sissors 0:600eecd89a78 21 void BurstSPI::clearRX( void ) {
Sissors 0:600eecd89a78 22 //Do it while either data in RX buffer, or while it is busy
Sissors 0:600eecd89a78 23 while(((_spi.spi->SR) & ((1<<4) + (1<<2))) != 0) {
Sissors 0:600eecd89a78 24 //Wait until data in RX buffer
Sissors 0:600eecd89a78 25 while(((_spi.spi->SR) & (1<<2)) == 0);
Sissors 0:600eecd89a78 26 int dummy = _spi.spi->DR;
Sissors 0:600eecd89a78 27 }
Sissors 0:600eecd89a78 28 }