So I am currently trying out SPI connections for the ILI9341 on the 747I-Discovery board connections are as follows
#define SPI_RES_Pin GPIO_PIN_1
#define SPI_RES_GPIO_Port GPIOK
#define SPI_DC_Pin GPIO_PIN_6
#define SPI_DC_GPIO_Port GPIOJ
#define SPI_CS_Pin GPIO_PIN_5
#define SPI_CS_GPIO_Port GPIOJ
hspi5.Instance = SPI5;
hspi5.Init.Mode = SPI_MODE_MASTER;
hspi5.Init.Direction = SPI_DIRECTION_2LINES_TXONLY;
hspi5.Init.DataSize = SPI_DATASIZE_8BIT;
hspi5.Init.CLKPolarity = SPI_POLARITY_LOW;
hspi5.Init.CLKPhase = SPI_PHASE_1EDGE;
hspi5.Init.NSS = SPI_NSS_SOFT;
hspi5.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16;
hspi5.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi5.Init.TIMode = SPI_TIMODE_DISABLE;
hspi5.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi5.Init.CRCPolynomial = 0x0;
hspi5.Init.NSSPMode = SPI_NSS_PULSE_ENABLE;
hspi5.Init.NSSPolarity = SPI_NSS_POLARITY_LOW;
hspi5.Init.FifoThreshold = SPI_FIFO_THRESHOLD_01DATA;
hspi5.Init.TxCRCInitializationPattern = SPI_CRC_INITIALIZATION_ALL_ZERO_PATTERN;
hspi5.Init.RxCRCInitializationPattern = SPI_CRC_INITIALIZATION_ALL_ZERO_PATTERN;
hspi5.Init.MasterSSIdleness = SPI_MASTER_SS_IDLENESS_00CYCLE;
hspi5.Init.MasterInterDataIdleness = SPI_MASTER_INTERDATA_IDLENESS_00CYCLE;
hspi5.Init.MasterReceiverAutoSusp = SPI_MASTER_RX_AUTOSUSP_DISABLE;
hspi5.Init.MasterKeepIOState = SPI_MASTER_KEEP_IO_STATE_DISABLE;
hspi5.Init.IOSwap = SPI_IO_SWAP_DISABLE;
if (HAL_SPI_Init(&hspi5) != HAL_OK)
{
Error_Handler();
}
I am currently trying to just change the colour of the pixel like this ILI9341_DrawPixel(0, 0, 0xF800); but nothing changes.
void ILI9341_DrawPixel(uint16_t x,uint16_t y,uint16_t color)
{
if((x >=LCD_WIDTH) || (y >=LCD_HEIGHT)) return;
uint8_t bufferX[4] = {x>>8, x, (x+1)>>8, (x+1)};
uint8_t bufferY[4] = {y>>8, y, (y+1)>>8, (y+1)};
uint8_t bufferC[2] = {color>>8, color};
ILI9341_WriteCommand(0x2A); //ADDRESS
ILI9341_WriteBuffer(bufferX, sizeof(bufferX)); //XDATA
ILI9341_WriteCommand(0x2B); //ADDRESS
ILI9341_WriteBuffer(bufferY, sizeof(bufferY)); //YDATA
ILI9341_WriteCommand(0x2C); //ADDRESS
ILI9341_WriteBuffer(bufferC, sizeof(bufferC)); //COLOR
}
could someone help I am not sure where to look to check what is wrong.
Edited by ST Moderator to apply source code formatting - please follow the recommendation in this article How to insert source code
