Using with RP2040-PiZero and 1.3inch display HAT

[hasaranga]

Hi,

I'm trying to use this library with RP2040-PiZero board and 1.3inch display HAT. Board: https://www.waveshare.com/wiki/RP2040-PiZero Display: https://www.waveshare.com/1.3inch-lcd-hat.htm

I'm using Colour_Test example. But there is nothing on screen. Backlight is working.

Here is my User_Setup.h content:

//=======================================

#define ST7789_DRIVER

#define TFT_WIDTH 240 #define TFT_HEIGHT 240

#define TFT_BL 24 #define TFT_BACKLIGHT_ON HIGH

#define TFT_MOSI 10 #define TFT_SCLK 11 #define TFT_CS 8 #define TFT_DC 25 #define TFT_RST 27

#define LOAD_GLCD #define LOAD_FONT2 #define LOAD_FONT4 #define LOAD_FONT6 #define LOAD_FONT7 #define LOAD_FONT8 #define LOAD_GFXFF

#define SMOOTH_FONT

#define TFT_SPI_PORT 1 #define SPI_FREQUENCY 27000000

#define SPI_READ_FREQUENCY 20000000 #define SPI_TOUCH_FREQUENCY 2500000

//=======================================

[istvanzk]

Hi @hasaranga. I had similar problem but for a different screen (https://learn.sparkfun.com/tutorials/sparkfun-micromod-input-and-display-carrier-board-hookup-guide). My problem was that the SPI settings were incorrect for these pins

#define TFT_MISO  xx
#define TFT_MOSI  xx
#define TFT_SCLK  xx

Additionally, the SPI frequency needed to be lowered in my case. I hope it helps.

[hasaranga]

No miso pin in my display. I tried to change the spi speed and mosi pin with sclk but the result is same.

[hasaranga]

I was able to use Adafruit-ST7735-ST7789 library with this panel successfully by configuring SPI1 pins manually.

See here: github.com/adafruit/Adafruit-ST7735-Library/issues/198