fixed SPI_FLUSH. current implementation waits for rx buffer to fill first. Thus, if we call SPI_FLUSH to make sure the rx fifo is empty when the rx fifo is already empty, we enter an infinite loop

2014-07-21 23:25:12 -04:00 · 2014-07-21 23:25:12 -04:00 · 1e39c9a454
commit 1e39c9a454
parent d7cf3b1f74
1 changed files with 0 additions and 1 deletions
--- a/cpu/cc2538/spi-arch.h
+++ b/cpu/cc2538/spi-arch.h
@ -63,7 +63,6 @@
 #error "You must include spi-arch.h before spi.h for the CC2538."
 #endif
 #define SPI_FLUSH() do { \
-  SPI_WAITFOREORx(); \
  while (REG(SSI0_BASE + SSI_SR) & SSI_SR_RNE) { \
    SPI_RXBUF; \
  } \