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Discard excess/bogus data in DR

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jflyper 2019-01-21 01:02:10 +09:00
parent 62da4d09e6
commit 35ade68bb3
1 changed files with 2 additions and 0 deletions
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2
src/main/drivers/bus_spi_stdperiph.c
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@ -113,6 +113,8 @@ uint8_t spiTransferByte(SPI_TypeDef *instance, uint8_t txByte)
{ {
uint16_t spiTimeout = 1000; uint16_t spiTimeout = 1000;
instance->DR;
while (SPI_I2S_GetFlagStatus(instance, SPI_I2S_FLAG_TXE) == RESET) while (SPI_I2S_GetFlagStatus(instance, SPI_I2S_FLAG_TXE) == RESET)
if ((spiTimeout--) == 0) if ((spiTimeout--) == 0)
return spiTimeoutUserCallback(instance); return spiTimeoutUserCallback(instance);