ESP32 Forum

Code: Select all

// orig
// #define TFT_DC_DATA     GPIO_OUTPUT_SET(25, 1)
// #define TFT_DC_COMMAND  GPIO_OUTPUT_SET(25, 0)
// #define TFT_DC_INIT     PIN_FUNC_SELECT(PERIPHS_IO_MUX_GPIO25_U, FUNC_GPIO25_GPIO25); TFT_DC_DATA

/* changed rudi */
#define TFT_DC_DATA     GPIO_OUTPUT_SET(21, 1)
#define TFT_DC_COMMAND  GPIO_OUTPUT_SET(21, 0)
#define TFT_DC_INIT     PIN_FUNC_SELECT(PERIPHS_IO_MUX_GPIO21_U, FUNC_GPIO21_GPIO21); TFT_DC_DATA

// orig
// #define TFT_BKL_INIT    gpio_set_direction(GPIO_NUM_16,GPIO_MODE_OUTPUT);TFT_BKL_ON 
// #define TFT_BKL_ON      gpio_set_level(GPIO_NUM_16,1)
// #define TFT_BKL_OFF     gpio_set_level(GPIO_NUM_16,0)

/* changed rudi */
#define TFT_BKL_INIT    gpio_set_direction(GPIO_NUM_5,GPIO_MODE_OUTPUT);TFT_BKL_ON 
#define TFT_BKL_ON      gpio_set_level(GPIO_NUM_5,0)     // Important - here was 0,1 swap so your screen is now light 
#define TFT_BKL_OFF     gpio_set_level(GPIO_NUM_5,1)    // Important - here was 0,1 swap so your screen is now light

//  orig
// #define TFT_RST_ACTIVE    GPIO_OUTPUT_SET(17, 0)
// #define TFT_RST_DEACTIVE  GPIO_OUTPUT_SET(17, 1)
// #define TFT_RST_INIT      PIN_FUNC_SELECT(PERIPHS_IO_MUX_GPIO17_U, FUNC_GPIO17_GPIO17); TFT_RST_DEACTIVE

/* changed rudi */
#define TFT_RST_ACTIVE    GPIO_OUTPUT_SET(18, 0)
#define TFT_RST_DEACTIVE  GPIO_OUTPUT_SET(18, 1)
#define TFT_RST_INIT      PIN_FUNC_SELECT(PERIPHS_IO_MUX_GPIO18_U, FUNC_GPIO18_GPIO18); TFT_RST_DEACTIVE

Code: Select all

void hspi_init(void)
{
    /*GPIO Inits according to Dev board for ILI9341*/
    spi_fifo = (uint32_t*)SPI_W0_REG(HSPI); //needed?


	// orig
    // PIN_FUNC_SELECT(PERIPHS_IO_MUX_GPIO19_U, 2);  
    // PIN_FUNC_SELECT(PERIPHS_IO_MUX_GPIO23_U, 2);  
    // PIN_FUNC_SELECT(PERIPHS_IO_MUX_GPIO18_U, 2);  
    // PIN_FUNC_SELECT(PERIPHS_IO_MUX_GPIO5_U, 2);   
           
	/* changed rudi */
    PIN_FUNC_SELECT(PERIPHS_IO_MUX_GPIO25_U, 2);  //MISO GPIO19 // -> 25
    PIN_FUNC_SELECT(PERIPHS_IO_MUX_GPIO23_U, 2);  //MOSI GPIO23 // -> 23
    PIN_FUNC_SELECT(PERIPHS_IO_MUX_GPIO19_U, 2);  //CLK GPIO18  // -> 19
    PIN_FUNC_SELECT(PERIPHS_IO_MUX_GPIO22_U, 2);   //CS GPIO5   // -> 22
    
    // orig
    //  gpio_matrix_in(GPIO_NUM_19, HSPIQ_IN_IDX,0);
    //  gpio_matrix_out(GPIO_NUM_23, HSPID_OUT_IDX,0,0);
    //  gpio_matrix_out(GPIO_NUM_18, HSPICLK_OUT_IDX,0,0);
    
     /* changed rudi */
    gpio_matrix_in(GPIO_NUM_25, HSPIQ_IN_IDX,0);
    gpio_matrix_out(GPIO_NUM_23, HSPID_OUT_IDX,0,0);
    gpio_matrix_out(GPIO_NUM_19, HSPICLK_OUT_IDX,0,0);
    
	// orig
	// gpio_matrix_out(GPIO_NUM_5, HSPICS0_OUT_IDX,0,0);
    
	/* changed rudi */
	gpio_matrix_out(GPIO_NUM_22, HSPICS0_OUT_IDX,0,0);
    

    spi_attr_t hSpiAttr;
    hSpiAttr.mode     = SpiMode_Master;
    hSpiAttr.subMode  = SpiSubMode_0;
    hSpiAttr.speed    = SpiSpeed_20MHz;
    hSpiAttr.bitOrder = SpiBitOrder_MSBFirst;
    hSpiAttr.halfMode = SpiWorkMode_Half;
    spi_init(HSPI, &hSpiAttr);

}