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Display ST7735 not working with esphome #2396

Closed pioneershahid closed 2 years ago

pioneershahid commented 3 years ago

The problem

Hi, this is my first ever post on GitHub so please bear with me.

I am trying to use the ST7735 display bought from Aliexpress. here is the link of the product.

I can successfully test it using Adafruit default graphictest on Nodemcu using the following pinout. No issue.

define TFT_CS D1

define TFT_RST D4

define TFT_DC D2

define TFT_MOSI D7

define TFT_SCLK D5

when I try to use the esphome ver 2021.8.2 on nodmcu using the code below there is nothing coming up on the screen. The display stays white.

Which version of ESPHome has the issue?

2021.8.2

What type of installation are you using?

Home Assistant Add-on

Which version of Home Assistant has the issue?

2021.9.3

What platform are you using?

ESP8266

Board

nodmcu

Component causing the issue

st7735

Example YAML snippet

font:
  - file: "webfont.ttf"
    id: my_font
    size: 20

spi:
  clk_pin: D5
  mosi_pin: D7

display:
  - platform: st7735
    model: "INITR_18BLACKTAB"
    reset_pin: D4
    cs_pin: D1
    dc_pin: D2
    rotation: 0
    device_width: 128
    device_height: 160
    col_start: 0
    row_start: 0
    eight_bit_color: true
    update_interval: 5s
    lambda: |-
      it.print(10, 10, id(my_font), "HELLO!");

Anything in the logs that might be useful for us?

I also tried to use different model such as "INITR_BLACKTAB" without any success.

Additional information

can anyone please advise if there is something wrong in the code or an error in esphome settings? any pointer would be greatly appreciated with thanks.

probot-esphome[bot] commented 3 years ago

Hey there @senexcrenshaw, mind taking a look at this issue as it has been labeled with an integration (st7735) you are listed as a code owner for? Thanks! (message by CodeOwnersMention)

WeekendWarrior1 commented 3 years ago

Weird ask, but can you try swapping the mosi_pin for a miso_pin and let me know if it works?

spi:
  clk_pin: D5
  miso_pin: D7
pioneershahid commented 3 years ago

Weird ask, but can you try swapping the mosi_pin for a miso_pin and let me know if it works?

spi:
  clk_pin: D5
  miso_pin: D7

Hi, same result. no display on the screen. wifi blue lights turn on and blink after few seconds.

WeekendWarrior1 commented 3 years ago

I tried your config with a D1 mini and a ST7735 display I had lying around, and it worked fine for me. Only difference was I used a different font, and used the greentab option Have you checked your wiring?

pioneershahid commented 2 years ago

@WeekendWarrior1 Thanks for looking into it. my wiring was correct as it's the same wiring I was using to test via Adafruit default graphictest. when I changed the font to Comic Sans MS.ttf, it worked. looks like an issue with the fonts I was originally using. thanks once again for all your help.