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Add dmaWait() for STM32

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Bodmer
2020-11-19 00:15:21 +00:00
parent 788048155c
commit bf5bf1852e
1 changed files with 12 additions and 2 deletions
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14
Processors/TFT_eSPI_STM32.c
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@@ -401,8 +401,7 @@ void TFT_eSPI::pushPixels(const void* data_in, uint32_t len)
** Function name: dmaBusy
** Description: Check if DMA is busy (usefully non-blocking!)
***************************************************************************************/
// Use "while(tft.dmaBusy());" in sketch for a blocking wait for DMA to complete
// or "while( tft.dmaBusy() ) {Do-something-useful;}"
// Use while( tft.dmaBusy() ) {Do-something-useful;}"
bool TFT_eSPI::dmaBusy(void)
{
//return (dmaHal.State == HAL_DMA_STATE_BUSY); // Do not use, SPI may still be busy
@@ -410,6 +409,17 @@ bool TFT_eSPI::dmaBusy(void)
}
/***************************************************************************************
** Function name: dmaWait
** Description: Wait until DMA is over (blocking!)
***************************************************************************************/
void TFT_eSPI::dmaWait(void)
{
//return (dmaHal.State == HAL_DMA_STATE_BUSY); // Do not use, SPI may still be busy
while (spiHal.State == HAL_SPI_STATE_BUSY_TX); // Check if SPI Tx is busy
}
/***************************************************************************************
** Function name: pushImageDMA
** Description: Push pixels to TFT (len must be less than 32767)