STM32F446RE with X-Nucleo-GFX01M1

[FTrom]

Hi

I have STM32F446RE and X-Nucleo-GFX01M1.

When flash my nucleo I get:

File download complete

Time elapsed during download operation: 00:00:03.366

Verifying ...

Download verified successfully 

Debugger connection lost.

Shutting down...

But I cannot see anything on my screen.

Probably because when I generate the code, the SW does not modify the SPI configuration and not initialize it.

reading the following document https://www.st.com/resource/en/user_manual/dm00720406-.pdf

for me, it is not clear how should I do it. Ex: mode: full/half duplex? CPL/CPA ? CRC calculation? LED? FMARK? etc.

Thanks

Fausto

[MM..1]

Debug conection lost exist when in code you use GPIO pin SWDIO SWDCLK or sleep stop standby mode and dont setup debuger for it, or when your MCU start app and this result to error for example hardfault...

[FTrom]

ok, but the display is still white :)

[Tesla DeLorean]

Then some other issue, then.

Perhaps try some other code, and port that, perhaps looking at the settings/configuration used there.

https://www.st.com/content/st_com/en/products/embedded-software/mcu-mpu-embedded-software/stm32-embedded-software/stm32cube-expansion-packages/x-cube-display.html

[Tesla DeLorean]

X-CUBE-DISPLAY_1_0_0\Projects\NUCLEO-G071RB\Applications\GFX01M1_HelloWorld\Core\Src\stm32g0xx_nucleo_bus.c

...
/* SPI1 init function */
 
__weak HAL_StatusTypeDef MX_SPI1_Init(SPI_HandleTypeDef* hspi)
{
  HAL_StatusTypeDef ret = HAL_OK;
  hspi->Instance = SPI1;
  hspi->Init.Mode = SPI_MODE_MASTER;
  hspi->Init.Direction = SPI_DIRECTION_2LINES;
  hspi->Init.DataSize = SPI_DATASIZE_8BIT;
  hspi->Init.CLKPolarity = SPI_POLARITY_LOW;
  hspi->Init.CLKPhase = SPI_PHASE_1EDGE;
  hspi->Init.NSS = SPI_NSS_SOFT;
  hspi->Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;
  hspi->Init.FirstBit = SPI_FIRSTBIT_MSB;
  hspi->Init.TIMode = SPI_TIMODE_DISABLE;
  hspi->Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
  hspi->Init.CRCPolynomial = 7;
  hspi->Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
  hspi->Init.NSSPMode = SPI_NSS_PULSE_DISABLE;
  if (HAL_SPI_Init(hspi) != HAL_OK)
  {
    ret = HAL_ERROR;
  }
 
  return ret;
}
DMA_HandleTypeDef hdma_spi1_tx;
 
static void SPI1_MspInit(SPI_HandleTypeDef* spiHandle)
{
  GPIO_InitTypeDef GPIO_InitStruct;
  /* USER CODE BEGIN SPI1_MspInit 0 */
 
  /* USER CODE END SPI1_MspInit 0 */
    /* Enable Peripheral clock */
    __HAL_RCC_SPI1_CLK_ENABLE();
 
    __HAL_RCC_GPIOA_CLK_ENABLE();
    /**SPI1 GPIO Configuration
    PA5     ------> SPI1_SCK
    PA6     ------> SPI1_MISO
    PA7     ------> SPI1_MOSI
    */
    GPIO_InitStruct.Pin = BUS_SPI1_SCK_GPIO_PIN;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_PULLDOWN;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
    GPIO_InitStruct.Alternate = BUS_SPI1_SCK_GPIO_AF;
    HAL_GPIO_Init(BUS_SPI1_SCK_GPIO_PORT, &GPIO_InitStruct);
 
    GPIO_InitStruct.Pin = BUS_SPI1_MISO_GPIO_PIN;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_PULLDOWN;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
    GPIO_InitStruct.Alternate = BUS_SPI1_MISO_GPIO_AF;
    HAL_GPIO_Init(BUS_SPI1_MISO_GPIO_PORT, &GPIO_InitStruct);
 
    GPIO_InitStruct.Pin = BUS_SPI1_MOSI_GPIO_PIN;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_PULLDOWN;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
    GPIO_InitStruct.Alternate = BUS_SPI1_MOSI_GPIO_AF;
    HAL_GPIO_Init(BUS_SPI1_MOSI_GPIO_PORT, &GPIO_InitStruct);
 
    /* Peripheral DMA init*/
 
    hdma_spi1_tx.Instance = DMA1_Channel1;
    hdma_spi1_tx.Init.Request = DMA_REQUEST_SPI1_TX;
    hdma_spi1_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
    hdma_spi1_tx.Init.PeriphInc = DMA_PINC_DISABLE;
    hdma_spi1_tx.Init.MemInc = DMA_MINC_ENABLE;
    hdma_spi1_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
    hdma_spi1_tx.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
    hdma_spi1_tx.Init.Mode = DMA_NORMAL;
    hdma_spi1_tx.Init.Priority = DMA_PRIORITY_LOW;
    if (HAL_DMA_Init(&hdma_spi1_tx) != HAL_OK)
    {
      Error_Handler( );
    }
 
  __HAL_LINKDMA(spiHandle,hdmatx,hdma_spi1_tx);
 
    /* Peripheral interrupt init */
    HAL_NVIC_SetPriority(SPI1_IRQn, 0, 0);
    HAL_NVIC_EnableIRQ(SPI1_IRQn);
  /* USER CODE BEGIN SPI1_MspInit 1 */
 
  /* USER CODE END SPI1_MspInit 1 */
}
...