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Dual-buffer for LCD

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This commit is contained in:
Damjan Adamic
2014-12-04 21:11:27 +01:00
parent e32da2ba4a
commit 0d1362e476
4 changed files with 27 additions and 7 deletions
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radio/src/targets/taranis/lcd_driver.cpp
+9 -4
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@@ -193,11 +193,17 @@ void lcdRefresh(bool wait)
DMA1_Stream7->CR &= ~DMA_SxCR_EN ; // Disable DMA
DMA1->HIFCR = DMA_HIFCR_CTCIF7 | DMA_HIFCR_CHTIF7 | DMA_HIFCR_CTEIF7 | DMA_HIFCR_CDMEIF7 | DMA_HIFCR_CFEIF7 ; // Write ones to clear bits
#if defined(LCD_DUAL_BUFFER)
//switch LCD buffer
DMA1_Stream7->M0AR = (uint32_t)displayBuf;
displayBuf = (displayBuf == displayBuf1) ? displayBuf2 : displayBuf1;
#endif
DMA1_Stream7->CR |= DMA_SxCR_EN | DMA_SxCR_TCIE; // Enable DMA & tXe interrupt
SPI3->CR2 |= SPI_CR2_TXDMAEN ;
}
// #if !defined(SIMU)
extern "C" void DMA1_Stream7_IRQHandler()
{
//clear interrupt flag
@@ -207,15 +213,14 @@ extern "C" void DMA1_Stream7_IRQHandler()
DMA1_Stream7->CR &= ~DMA_SxCR_EN ; // Disable DMA
while ( SPI3->SR & SPI_SR_BSY ) {
/* Wait for SPI to finis sending data
The DMA Tx End interrupt comes two bytes before the end of SPI transmission,
/* Wait for SPI to finish sending data
The DMA TX End interrupt comes two bytes before the end of SPI transmission,
therefore we have to wait here.
*/
}
LCD_NCS_HIGH();
lcd_busy = false;
}
// #endif // #if !defined(SIMU)
#else // #if defined(REVPLUS)
void lcdRefresh()