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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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Add STM32F4xx SPI 3 DMA support #1970

Closed jfkwhat closed 1 year ago

jfkwhat commented 2 years ago

IDE: PlatformIO TFT_eSPI Library Version: 2.4.75 Processor: STM32F411RE (Nucleo board) TFT driver: ILI9341 (https://www.adafruit.com/product/1770) Interface type: SPI Problem: DMA was not working with SPI 3. SPI3 works fine without DMA. I think the interrupt for stream 5 was not enabled so I made a change to the TFT_eSPI_STM32.c file inside the initDMA function and DMA works correctly. Could be a set-up issue too so I have attached my set-up file. Working on a similar project to the bouncy balls DMA example.

Was:

  #if (TFT_SPI_PORT == 1)
    HAL_NVIC_EnableIRQ(DMA2_Stream3_IRQn);  // Enable DMA end interrupt handler
  #elif (TFT_SPI_PORT == 2)
    HAL_NVIC_EnableIRQ(DMA1_Stream4_IRQn);  // Enable DMA end interrupt handler
  #endif
'''

Added a check to initialise DMA1_Stream5_IRQn:

if (TFT_SPI_PORT == 1)

HAL_NVIC_EnableIRQ(DMA2_Stream3_IRQn);  // Enable DMA end interrupt handler

elif (TFT_SPI_PORT == 2)

HAL_NVIC_EnableIRQ(DMA1_Stream4_IRQn);  // Enable DMA end interrupt handler

#elif (TFT_SPI_PORT == 3) HAL_NVIC_EnableIRQ(DMA1_Stream5_IRQn);

endif



[User_Setup.zip](https://github.com/Bodmer/TFT_eSPI/files/9385790/User_Setup.zip)
Bodmer commented 2 years ago

OK, I will add at the next update. Thanks.

Bodmer commented 1 year ago

Update added, thanks.