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Tentative SPIv1 I2S driver fix. 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@13212 27425a3e-05d8-49a3-a47f-9c15f0e5edd8
This commit is contained in:
Giovanni Di Sirio 2019-12-07 08:53:10 +00:00
parent ed07403b31
commit e480f49e58
1 changed files with 17 additions and 5 deletions
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22
os/hal/ports/STM32/LLD/SPIv1/hal_i2s_lld.c
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@ -557,14 +557,26 @@ void i2s_lld_stop_exchange(I2SDriver *i2sp) {
to wait for TXE = 1 and BSY = 0.*/
while ((i2sp->spi->SR & (SPI_SR_TXE | SPI_SR_BSY)) != SPI_SR_TXE)
;
/* Stop SPI/I2S peripheral.*/
i2sp->spi->I2SCFGR &= ~SPI_I2SCFGR_I2SE;
}
/* Stop SPI/I2S peripheral.*/
i2sp->spi->I2SCFGR &= ~SPI_I2SCFGR_I2SE;
/* Stop RX DMA, if enabled.*/
if (NULL != i2sp->dmarx)
/* Stop RX DMA, if enabled then draining the RX DR.*/
if (NULL != i2sp->dmarx) {
dmaStreamDisable(i2sp->dmarx);
/* Waiting for some data to be present in RX DR.*/
while ((i2sp->spi->SR & SPI_SR_RXNE) != SPI_SR_RXNE)
;
/* Stop SPI/I2S peripheral.*/
i2sp->spi->I2SCFGR &= ~SPI_I2SCFGR_I2SE;
/* Purging data in DR.*/
while ((i2sp->spi->SR & SPI_SR_RXNE) != 0)
(void) i2sp->spi->DR;
}
}
#endif /* HAL_USE_I2S */