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Bodmer / TFT_eSPI

Arduino and PlatformIO IDE compatible TFT library optimised for the Raspberry Pi Pico (RP2040), STM32, ESP8266 and ESP32 that supports different driver chips
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STM32F405/407 DMA is not working (SPI ili9341) #3128

Open ToRoCu opened 5 months ago

ToRoCu commented 5 months ago

Hello Bodmer,

I have now tested a few things, without DMA all is working fine but slow. Tests with the DMA Example --> boing_ball were not successful. The grid is showing but the ball not. When i commend out the "initDMA" and rename "pushPixelsDMA" to "pushPixels" so it will show a ball.

I think there are more issues in the board package HAL, i have tryed to replace the HAL with LL Driver Registers but that is more difficult than I thought.

Tested with ili9341 on SPI 1&2 Tested board package 2.6.0 & 2.7.1

Continued to #3072

Bodmer commented 5 months ago

DMA for the STM32F processors used to work but it appears that a board package update at some point in the past has broken this. Have you tried earlier board packages?

ToRoCu commented 5 months ago

I have now tested all board packages down to 2.0.0, with the same result that only the grid is displayed in DMA Example --> boing_ball but not the ball.

Is it possible that there is another problem in the lib?

zenmetsu commented 1 month ago

possibly related, but I have a nucleo-144 STM32F767ZI and it also fails to display anything when DMA is enabled. I can use #define STM32 just fine and get the optimizations (this doesn't work with my STM32H743ZI2 though). DMA attempts however result in just a black display. The board is still responsive, and serial output shows some questionable claims...

04:34:28.965 -> 1010 fps
04:34:29.059 -> 961 fps
04:34:29.154 -> 1030 fps
04:34:29.247 -> 943 fps
04:34:29.342 -> 1000 fps

I have attempted to downgrade my board support package down to 2.0.0 with the same outcome. It does not appear to be something with the BSP. I am attempting this on SPI1 with an SSD1351 display. I have tried with an ILI9340C (using ILI9341 driver) and ST7789V with the same results; no display when DMA is selected but works if DMA is commented out.