je ne sais plus
BurstSPI_KL25Z.cpp
- Committer:
- FreeControl
- Date:
- 2015-06-17
- Revision:
- 0:3787bbf77ca8
File content as of revision 0:3787bbf77ca8:
#ifdef TARGET_KL25Z #include "FastSPI.h" void FastSPI::fastWrite(int data) { //Wait until FIFO has space while(((_spi.spi->S) & SPI_S_SPTEF_MASK) == 0); //transmit data _spi.spi->D = data; } void FastSPI::clearRX( void ) { //We put in a delay here, this function shouldn't be called very often, so not a huge problem //Without delay you will rise the CS line before it is finished (been there, done that) //We use time required to transmit 20 bits (8 bits being transmitted, 8 bits in FIFO, 4 bits safety margin float bytetime = 20.0/_hz; wait(bytetime); //Wait until status is flagged that we can read, read: while (_spi.spi->S & SPI_S_SPRF_MASK == 0); int dummy = _spi.spi->D; } #endif