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fix status register clear

This commit is contained in:
Jorj Bauer 2022-01-22 21:01:05 -05:00
parent 7d4505c83f
commit 7464e05578
1 changed files with 2 additions and 2 deletions
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4
teensy/RA8875_t4.cpp
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@ -362,7 +362,7 @@ bool RA8875_t4::updateScreenAsync(bool update_cont)
maybeUpdateTCR(LPSPI_TCR_FRAMESZ(7) | LPSPI_TCR_RXMSK /*| LPSPI_TCR_CONT*/);
// Set up the DMA Enable Register to enable transmit DMA (and not receive DMA)
_pimxrt_spi->DER = LPSPI_DER_TDDE;
_pimxrt_spi->SR &= 0x3f00; // clear status flags RDF and TDF (rx and tx data flags), but leave error flags
_pimxrt_spi->SR = 0x3f00; // Clear error flags (these are w1c flags - "write 1 to clear")
_dmatx.triggerAtHardwareEvent( _spi_hardware->tx_dma_channel );
_dmatx = _dmasettings[0];
@ -507,7 +507,7 @@ void RA8875_t4::process_dma_interrupt(void) {
_pimxrt_spi->FCR = _spi_fcr_save;
_pimxrt_spi->DER = 0; // turn off tx and rx DMA
_pimxrt_spi->CR = LPSPI_CR_MEN | LPSPI_CR_RRF | LPSPI_CR_RTF; //RRF: reset receive FIFO; RTF: reset transmit FIFO; MEN: enable module
_pimxrt_spi->SR &= 0x3f00; // clear status flags RDF and TDF (rx and tx data flags), but leave error flags
_pimxrt_spi->SR = 0x3f00; // Clear error flags (these are w1c flags - "write 1 to clear")
maybeUpdateTCR(LPSPI_TCR_FRAMESZ(7));
_endSend();
_dma_state &= ~RA8875_DMA_ACTIVE;