How to connect an HX8357 to ESP32

[vascoferreira25]

I'm trying to use a HX8357 TFT panel with an ESP32 but the screen is always black.

I'm using the Elipse example and I changed the User_Setup.h to these values:

• I've set the #define TFT_PARALLEL_8_BIT although I don't know if it is needed.

#define HX8357D_DRIVER
#define TFT_PARALLEL_8_BIT

// The ESP32 and TFT the pins used for testing are:
#define TFT_CS   34  // Chip select control pin (library pulls permanently low
#define TFT_DC   15  // Data Command control pin - must use a pin in the range 0-31
#define TFT_RST  25  // Reset pin, toggles on startup

#define TFT_WR   32  // Write strobe control pin - must use a pin in the range 0-31
#define TFT_RD   33  // Read strobe control pin

#define TFT_D0   13  // Must use pins in the range 0-31 for the data bus
#define TFT_D1   23  // so a single register write sets/clears all bits.
#define TFT_D2   22  // Pins can be randomly assigned, this does not affect
#define TFT_D3   21  // TFT screen update performance.
#define TFT_D4   19
#define TFT_D5   18
#define TFT_D6   5
#define TFT_D7   17

#define LOAD_GLCD   // Font 1. Original Adafruit 8 pixel font needs ~1820 bytes in FLASH
#define LOAD_FONT2  // Font 2. Small 16 pixel high font, needs ~3534 bytes in FLASH, 96 characters
#define LOAD_FONT4  // Font 4. Medium 26 pixel high font, needs ~5848 bytes in FLASH, 96 characters
#define LOAD_FONT6  // Font 6. Large 48 pixel font, needs ~2666 bytes in FLASH, only characters 1234567890:-.apm
#define LOAD_FONT7  // Font 7. 7 segment 48 pixel font, needs ~2438 bytes in FLASH, only characters 1234567890:-.
#define LOAD_FONT8  // Font 8. Large 75 pixel font needs ~3256 bytes in FLASH, only characters 1234567890:-.
#define LOAD_GFXFF  // FreeFonts. Include access to the 48 Adafruit_GFX free fonts FF1 to FF48 and custom fonts

#define SMOOTH_FONT
#define SPI_FREQUENCY  40000000
#define SPI_READ_FREQUENCY  20000000
#define SPI_TOUCH_FREQUENCY  2500000

This is the schematics of the connection (please ignore the SD Card reader):

[fvanroie]

#define TFT_WR 32 // Write strobe control pin - must use a pin in the range 0-31

Pin 32 is not in the 0-31 range, maybe you can try another pin?

[vascoferreira25]

Completely missed the comments. I'll try it then I'll write an update.