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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

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This commit is contained in:
William Huang 2014-07-21 23:25:12 -04:00
parent d7cf3b1f74
commit 1e39c9a454
1 changed files with 0 additions and 1 deletions
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cpu/cc2538/spi-arch.h
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@ -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; \
} \