ScStw/ESP32-HUB75-MatrixPanel-DMA
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Update gdma_lcd_parallel16.cpp

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mrfaptastic 2022-09-30 11:56:17 +01:00
parent 30f0014b0c
commit f0a5d1ad54
1 changed files with 12 additions and 2 deletions
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14
src/platforms/esp32s3/gdma_lcd_parallel16.cpp
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@ -7,10 +7,12 @@
and register poking. Probably more robust ways of doing this still TBD. and register poking. Probably more robust ways of doing this still TBD.
FULL CREDIT goes to AdaFruit FULL CREDIT goes to AdaFruit and https://github.com/PaintYourDragon
https://blog.adafruit.com/2022/06/21/esp32uesday-more-s3-lcd-peripheral-hacking-with-code/ https://blog.adafruit.com/2022/06/21/esp32uesday-more-s3-lcd-peripheral-hacking-with-code/
https://github.com/adafruit/Adafruit_Protomatter/blob/master/src/arch/esp32-s3.h
PLEASE SUPPORT THEM! PLEASE SUPPORT THEM!
*/ */
@ -71,7 +73,7 @@
LCD_CAM.lcd_user.lcd_reset = 1; LCD_CAM.lcd_user.lcd_reset = 1;
esp_rom_delay_us(100); esp_rom_delay_us(100);
auto lcd_clkm_div_num = 160000000 / _cfg.bus_freq / 2; auto lcd_clkm_div_num = 160000000 / _cfg.bus_freq;
ESP_LOGI(TAG, "Clock divider is %d", lcd_clkm_div_num); ESP_LOGI(TAG, "Clock divider is %d", lcd_clkm_div_num);
@ -185,11 +187,19 @@
}; };
gdma_apply_strategy(dma_chan, &strategy_config); gdma_apply_strategy(dma_chan, &strategy_config);
gdma_transfer_ability_t ability = {
.sram_trans_align = 0,
.psram_trans_align = 0,
};
gdma_set_transfer_ability(dma_chan, &ability);
// Enable DMA transfer callback // Enable DMA transfer callback
/*
static gdma_tx_event_callbacks_t tx_cbs = { static gdma_tx_event_callbacks_t tx_cbs = {
.on_trans_eof = dma_callback .on_trans_eof = dma_callback
}; };
gdma_register_tx_event_callbacks(dma_chan, &tx_cbs, NULL); gdma_register_tx_event_callbacks(dma_chan, &tx_cbs, NULL);
*/
// As mentioned earlier, the slowest clock we can get to the LCD // As mentioned earlier, the slowest clock we can get to the LCD
// peripheral is 40 MHz / 250 / 64 = 2500 Hz. To make an even slower // peripheral is 40 MHz / 250 / 64 = 2500 Hz. To make an even slower