ESP32 C3 Classic (LuatOS) and LCD TFT SPI 128x160 ST7735 (TFT_eSPI)

Other Hardware Displays
1

Hi, i have ESP32 C3 Classic with LuatOS on the back side, mostly all features and pins for project is working fine.

However when i tried using TFT SPI display 1.8 inch with ST7735 and TFT_eSPI library, it start crashed. So i came to github issue and read the fix, which is replace 4 files of TFT_eSPI and TFT_eSPI_ESP32_C3 then "#define USE_HSPI_PORT"

It boot fine and print out all serial messages, but the display still blank white.
I tried change pins several times, copying from ESP32 and ESP32 C3 Mini but still blank white.

My current pins which does not work:

#define TFT_SCLK 4
#define TFT_MOSI 8
#define TFT_CS   5
#define TFT_DC   3
#define TFT_RST  -1

And user configs:

#define ST7735_DRIVER
#define TFT_RGB_ORDER TFT_RGB
#define TFT_WIDTH  128
#define TFT_HEIGHT 160
#define SPI_FREQUENCY  27000000

The screen is tested and working properly on ESP32 and ESP8266 (NodeMCU/Wemos D1 Mini) with TFT_eSPI library, but only not working on this ESP32 C3 LuatOS version.

Here is my Arduino Tools flash config:

image
image489×457 7.13 KB

LuatOS-CORE-ESP32-C3-pinout-low
LuatOS-CORE-ESP32-C3-pinout-low1440×1052 219 KB

image
image929×557 145 KB

2

Hi, I am working with this display recently on the STM32. I had similar issues and I found that the CS signal might be the cause. Maybe you can use an oscilloscope or logic analyser to check if the CS signal pulls down and selects the display correctly.