Bodmer/TFT_eSPI
1
0
Fork 1
mirror of https://github.com/Bodmer/TFT_eSPI.git synced 2025-08-04 05:04:42 +02:00
Code Issues Packages Projects Releases Wiki Activity

Use RP2040 built-in byte swap for DMA

Browse Source
This commit is contained in:
Bodmer
2021-04-24 01:12:55 +01:00
parent a0703e7880
commit 079d7f6ee5
1 changed files with 5 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
Processors/TFT_eSPI_RP2040.c
View File

@@ -309,16 +309,8 @@ void TFT_eSPI::pushPixelsDMA(uint16_t* image, uint32_t len)
dmaWait(); dmaWait();
if(_swapBytes) { channel_config_set_bswap(&dma_tx_config, !_swapBytes);
channel_config_set_transfer_data_size(&dma_tx_config, DMA_SIZE_16); dma_channel_configure(dma_tx_channel, &dma_tx_config, &spi_get_hw(spi0)->dr, (uint16_t*)buffer, len, true);
dma_channel_configure(dma_tx_channel, &dma_tx_config, &spi_get_hw(spi0)->dr, (uint16_t*)image, len, true);
}
else
{
spi_set_format(spi0, 8, (spi_cpol_t)0, (spi_cpha_t)0, SPI_MSB_FIRST);
channel_config_set_transfer_data_size(&dma_tx_config, DMA_SIZE_8);
dma_channel_configure(dma_tx_channel, &dma_tx_config, &spi_get_hw(spi0)->dr, (uint8_t*)image, len*2, true);
}
} }
/*************************************************************************************** /***************************************************************************************
@@ -365,17 +357,8 @@ void TFT_eSPI::pushImageDMA(int32_t x, int32_t y, int32_t w, int32_t h, uint16_t
setAddrWindow(x, y, dw, dh); setAddrWindow(x, y, dw, dh);
if(_swapBytes) { channel_config_set_bswap(&dma_tx_config, !_swapBytes);
channel_config_set_transfer_data_size(&dma_tx_config, DMA_SIZE_16); dma_channel_configure(dma_tx_channel, &dma_tx_config, &spi_get_hw(spi0)->dr, (uint16_t*)buffer, len, true);
dma_channel_configure(dma_tx_channel, &dma_tx_config, &spi_get_hw(spi0)->dr, (uint16_t*)buffer, len, true);
}
else
{
spi_set_format(spi0, 8, (spi_cpol_t)0, (spi_cpha_t)0, SPI_MSB_FIRST);
channel_config_set_transfer_data_size(&dma_tx_config, DMA_SIZE_8);
dma_channel_configure(dma_tx_channel, &dma_tx_config, &spi_get_hw(spi0)->dr, (uint8_t*)buffer, len*2, true);
}
} }
@@ -389,6 +372,7 @@ bool TFT_eSPI::initDMA(bool ctrl_cs)
dma_tx_channel = dma_claim_unused_channel(true); dma_tx_channel = dma_claim_unused_channel(true);
dma_tx_config = dma_channel_get_default_config(dma_tx_channel); dma_tx_config = dma_channel_get_default_config(dma_tx_channel);
channel_config_set_transfer_data_size(&dma_tx_config, DMA_SIZE_16); channel_config_set_transfer_data_size(&dma_tx_config, DMA_SIZE_16);
channel_config_set_dreq(&dma_tx_config, spi_get_index(spi0) ? DREQ_SPI1_TX : DREQ_SPI0_TX); channel_config_set_dreq(&dma_tx_config, spi_get_index(spi0) ? DREQ_SPI1_TX : DREQ_SPI0_TX);