M5Dial TFT_eSPI pinout

gordsh

Does anyone know the correct pin assignment for the M5Dial SPI bus? I am trying to run LVGL with TFT_eSPI. I have tried the pin assignments I obtained from the M5Dial specifications page but I am having no luck. Here is what I have so far

// For ESP32 Dev board (only tested with GC9A01 display)
// The hardware SPI can be mapped to any pins

#define TFT_MOSI 5 // In some display driver board, it might be written as "SDA" and so on.
#define TFT_SCLK 6
#define TFT_CS 7 // Chip select control pin
#define TFT_DC 4 // Data Command control pin
#define TFT_RST 8 // Reset pin (could connect to Arduino RESET pin)
#define TFT_BL 9 // LED back-light

ajb2k3

Have you added the GC9A01 driver?

gordsh

@ajb2k3 said in M5Dial TFT_eSPI pinout:

GC9A01 driver

Hmm, no I did not. Let me do some research and try to find the driver

gordsh

Can any one get this simple GC9A01 test to run on the M5Dial

https://github.com/carlfriess/GC9A01_demo

My goal is to have LVGL running on the M5Dial so I am working my way through the display issues at this time.

ajb2k3

This is the Micropython code I used to get a basic "Hello World" working.

import os, sys, io
import M5
from M5 import *

label0 = None

def setup():
  global label0

  M5.begin()
  label0 = Widgets.Label("label", 50, 100, 1.0, 0xffffff, 0x222222, Widgets.FONTS.DejaVu18)

  label0.setCursor(x=50, y=100)
  label0.setText(str('Hello World'))
  label0.setVisible(True)

def loop():
  global label0
  M5.update()

if __name__ == '__main__':
  try:
    setup()
    while True:
      loop()
  except (Exception, KeyboardInterrupt) as e:
    try:
      from utility import print_error_msg
      print_error_msg(e)
    except ImportError:
      print("please update to latest firmware”)

gordsh

@ajb2k3 said in M5Dial TFT_eSPI pinout:

M5

Thank you.

felmue

Hello @gordsh

re TFT_eSPI : try adding the following define in Setup200_GC9A01.h

#define TFT_BACKLIGHT_ON HIGH

re GC9A01_demo : please find an M5Dial version here.

Thanks
Felix

gordsh

@felmue, thanks very much, This worked perfectly.