Solved
STM32U575 GPDMA1 Configuration Problem
Hello,
I have a board with a STM32U575RGTX CPU, and i use SPI1 with a 2.8" TFT ILI9341 Display.
I got problems with the GPDMA1 configuration, and need help.
main.c:
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_GPDMA1_Init();
MX_CRC_Init();
MX_TIM2_Init();
MX_SPI1_Init();
MX_ICACHE_Init();
/* USER CODE BEGIN 2 */
_lcd = ili9341_new(&hspi1, LCD_RESET_GPIO_Port, LCD_RESET_Pin, LCD_NSS_GPIO_Port, LCD_NSS_Pin, LCD_DC_GPIO_Port, LCD_DC_Pin, isoLandscape, LCD_CS_GPIO_Port,LCD_CS_Pin, LCD_IRQ_GPIO_Port, LCD_IRQ_Pin, itsNONE, itnNormalized);
ili9341_fill_screen(_lcd, ILI9341_RED); // FILL SCREEN RED
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
ILI9341:
void ili9341_fill_screen(ili9341_t *lcd, ili9341_color_t color)
{
ili9341_fill_rect(lcd, color,
0, 0, lcd->screen_size.width, lcd->screen_size.height);
}
void ili9341_fill_rect(ili9341_t *lcd, ili9341_color_t color,
int16_t x, int16_t y, uint16_t w, uint16_t h)
{
// verify we have something within screen dimensions to be drawn
if (ibNOT(ili9341_clip_rect(lcd, &x, &y, &w, &h)))
{ return; }
uint32_t num_pixels = w * h;
uint32_t rect_wc = num_pixels;
uint32_t block_wc = rect_wc;
if (block_wc > __SPI_TX_BLOCK_MAX__)
{ block_wc = __SPI_TX_BLOCK_MAX__; }
// fill entire block with ordered color data
uint16_t color_le = __LEu16(&color);
for (uint16_t i = 0; i < block_wc; ++i)
{ spi_tx_block[i] = color_le; }
// select target region
ili9341_spi_tft_set_address_rect(lcd, x, y, (x + w - 1), (y + h - 1));
ili9341_spi_tft_select(lcd);
HAL_GPIO_WritePin(lcd->data_command_port, lcd->data_command_pin, __GPIO_PIN_SET__);
// repeatedly send MIN(remaining-words, block-words) words of color data until
// all rect words have been sent.
uint32_t curr_wc;
while (rect_wc > 0) {
curr_wc = rect_wc;
if (curr_wc > block_wc)
{ curr_wc = block_wc; }
ili9341_transmit_color(lcd, curr_wc * 2/*16-bit words*/, spi_tx_block, ibYes);
rect_wc -= curr_wc;
}
ili9341_spi_tft_release(lcd);
}
void ili9341_transmit_color(ili9341_t *lcd, uint16_t size, uint16_t color[]/* already byte-swapped (LE) */, ili9341_bool_t wait)
{
if ((NULL == lcd) || (0 == size) || (NULL == color))
{ return; }
HAL_SPI_Transmit_DMA(lcd->spi_hal, (uint8_t *)color, size);
if (ibOK(wait))
{ ili9341_transmit_wait(lcd); }
}
When i use HAL_SPI_Transmit_DMA, then the colors on the TFT are not correct (Red=Magenta,Green=Green,Blue=Black), if i change the code to HAL_SPI_Transmit without DMA, then the colors are correct... what can be wrong in my DMA Config?
Here is my config:
SPI is configured with 8-Bit and MSB.