ScStw/ESP32-HUB75-MatrixPanel-DMA
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Update gdma_lcd_parallel16.cpp

Browse source
This commit is contained in:
mrfaptastic 2022-09-30 11:56:17 +01:00
parent 30f0014b0c
commit f0a5d1ad54
1 changed files with 12 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
src/platforms/esp32s3/gdma_lcd_parallel16.cpp
View file

@ -7,10 +7,12 @@
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://github.com/adafruit/Adafruit_Protomatter/blob/master/src/arch/esp32-s3.h
PLEASE SUPPORT THEM!
*/
@ -71,7 +73,7 @@
LCD_CAM.lcd_user.lcd_reset = 1;
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);
@ -185,11 +187,19 @@
};
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
/*
static gdma_tx_event_callbacks_t tx_cbs = {
.on_trans_eof = dma_callback
};
gdma_register_tx_event_callbacks(dma_chan, &tx_cbs, NULL);
*/
// 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