3. M5Dial TFT_eSPI pinout

M5Dial TFT_eSPI pinout


  • 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

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  • Have you added the GC9A01 driver?

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  • @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

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

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

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  • 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”)
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  • @ajb2k3 said in M5Dial TFT_eSPI pinout:

    M5

    Thank you.

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  • 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

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  • @felmue, thanks very much, This worked perfectly.

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