Unable to change interrupt pin for lilygo_t5_47 touchscreen

[special-k-uk]

The problem

The lilygo T5 4.7 Touchscreen component enforces GPIO13 as the interrupt pin, as specified in the docs.

interrupt_pin (Optional, Pin Schema): The touch detection pin. Must be GPIO13.

This works fine for the Lilygo T5 4.7 ESP32 v3 boards where the interrupt is GPIO13, but not for the newer ESP32-S3 board version where the interrupt is GPIO09.

I have 6 of the newer ESP32-S3 boards that the seller shipped instead of the purchased older v3 boards :-(

The Touchscreens docs specify the interrupt_pin is optional, yet if it is omitted from the yaml ESPHome warns that it IS a required option.

Setting the interrupt pin to GPIO09 in the yaml has no affect, and touches are not registered.

Which version of ESPHome has the issue?

2023.7.0

What type of installation are you using?

Home Assistant Add-on

Which version of Home Assistant has the issue?

2023.7.3

What platform are you using?

ESP32

Board

Lilygo T5 4.7 ESP32-S3 v2.3

Component causing the issue

Touchscreen

Example YAML snippet

touchscreen:
  - platform: lilygo_t5_47
    id: lilygo_touchscreen
    interrupt_pin: GPIO09
    address: 0x5A
    setup_priority: -100
    on_touch:
      then:
        - display.page.show_next: 't5_display'
        - component.update: 't5_display'

Anything in the logs that might be useful for us?

INFO ESPHome 2023.7.0
INFO Reading configuration /config/esphome/test.yaml...
INFO Detected timezone 'Europe/London'
INFO Detected timezone 'Europe/London'
INFO Starting log output from 192.168.1.51 using esphome API
INFO Successfully connected to 192.168.1.51
[20:51:14][I][app:102]: ESPHome version 2023.7.0 compiled on Jul 24 2023, 19:32:54
[20:51:14][C][wifi:543]: WiFi:
[20:51:14][C][wifi:379]:   Local MAC: 7C:DF:A1:FF:D2:2b
[20:51:14][C][wifi:380]:   SSID: [redacted]
[20:51:14][C][wifi:381]:   IP Address: 192.168.1.51
[20:51:14][C][wifi:383]:   BSSID: [redacted]
[20:51:14][C][wifi:384]:   Hostname: 'test'
[20:51:14][C][wifi:386]:   Signal strength: -69 dB ▂▄▆█
[20:51:14][V][wifi:388]:   Priority: 0.0
[20:51:14][C][wifi:390]:   Channel: 1
[20:51:14][C][wifi:391]:   Subnet: 255.255.255.0
[20:51:14][C][wifi:392]:   Gateway: 192.168.1.254
[20:51:14][C][wifi:393]:   DNS1: 192.168.1.253
[20:51:14][C][wifi:394]:   DNS2: 8.8.8.8
[20:51:14][C][logger:301]: Logger:
[20:51:14][C][logger:302]:   Level: VERBOSE
[20:51:14][C][logger:303]:   Log Baud Rate: 115200
[20:51:14][C][logger:305]:   Hardware UART: UART0
[20:51:14][C][i2c.arduino:053]: I2C Bus:
[20:51:14][C][i2c.arduino:054]:   SDA Pin: GPIO18
[20:51:14][C][i2c.arduino:055]:   SCL Pin: GPIO17
[20:51:14][C][i2c.arduino:056]:   Frequency: 50000 Hz
[20:51:14][C][i2c.arduino:059]:   Recovery: bus successfully recovered
[20:51:14][I][i2c.arduino:069]: Results from i2c bus scan:
[20:51:14][I][i2c.arduino:075]: Found i2c device at address 0x51
[20:51:14][I][i2c.arduino:075]: Found i2c device at address 0x5A
[20:51:14][C][gpio.binary_sensor:015]: GPIO Binary Sensor 'button21'
[20:51:14][C][gpio.binary_sensor:016]:   Pin: GPIO21
[20:51:14][C][PCF8563:022]: PCF8563:
[20:51:14][C][PCF8563:023]:   Address: 0x51
[20:51:14][C][PCF8563:027]:   Timezone: 'GMT0BST,M3.5.0/1,M10.5.0'
[20:51:14][C][homeassistant.time:010]: Home Assistant Time:
[20:51:14][C][homeassistant.time:011]:   Timezone: 'GMT0BST,M3.5.0/1,M10.5.0'
[20:51:14][C][t574:053]: T547
[20:51:14][C][t574:053]:   Rotations: 180 °
[20:51:14][C][t574:053]:   Dimensions: 960px x 540px
[20:51:14][C][t574:054]:   Update Interval: 7200.0s
[20:51:14][C][captive_portal:088]: Captive Portal:
[20:51:14][C][mdns:112]: mDNS:
[20:51:14][C][mdns:113]:   Hostname: test
[20:51:14][V][mdns:114]:   Services:
[20:51:14][V][mdns:116]:   - _esphomelib, _tcp, 6053
[20:51:14][V][mdns:118]:     TXT: friendly_name = test
[20:51:14][V][mdns:118]:     TXT: version = 2023.7.0
[20:51:14][V][mdns:118]:     TXT: mac = 7cdfa1ffd228
[20:51:14][V][mdns:118]:     TXT: platform = ESP32
[20:51:14][V][mdns:118]:     TXT: board = lilygo-t5-47-plus
[20:51:14][V][mdns:118]:     TXT: network = wifi
[20:51:14][V][mdns:118]:     TXT: api_encryption = Noise_NNpsk0_25519_ChaChaPoly_SHA256
[20:51:14][C][ota:093]: Over-The-Air Updates:
[20:51:14][C][ota:094]:   Address: 192.168.1.51:3232
[20:51:14][C][ota:097]:   Using Password.
[20:51:14][C][api:138]: API Server:
[20:51:14][C][api:139]:   Address: 192.168.1.51:6053
[20:51:14][C][api:141]:   Using noise encryption: YES
[20:51:14][C][lilygo_t5_47.touchscreen:174]: Lilygo T5 47 Touchscreen:
[20:51:14][C][lilygo_t5_47.touchscreen:175]:   Address: 0x5A
[20:51:14][C][lilygo_t5_47.touchscreen:176]:   Interrupt Pin: GPIO9

Additional information

No response

[nodacat]

Same issue here! any progress on your end?

[nodacat]

FYI I have it working. Try using GPIO47 instead of GPIO09 - I'm using esphome's component.

[special-k-uk]

DOH!

Well spotted @nodacat . I don't know why I didn't check the schematics, I've worked with a few different Lilygo screens and I ALWAYS need to check them as their printed docs tend to be very wrong.

:scratches_head: Why didn't I check them this time? Don't I feel stupid for not checking :-)

Yep, all working with GPIO47

[nodacat]

Hahah oh you weren’t the only one! I was so locked in on that pinmap graphic from lilygo, many others mistook the RTC pins for the touchscreen, which lilygo left off this time oddly. Glad I could help!

[special-k-uk]

Yeah, sometimes you just go so far down the rabbit hole, that the obvious just isn't obvious anymore!

I had the same issue with the TTGO T5s 2.7". Cracking little board (used them for air quality sensors), but the silk screening and docs are a mess. I'd swear the schematics were for a different board compared to the AliExpress listing!

Anyways, the WAF has significantly increased now these 6 screens are touchable again!

[nielsnl68]

@special-k-uk when this issue seems to be fixed would you mind closing this issue.

[special-k-uk]

@nodacat . Probably a dumb question, as it's been a really long day, I'm looking at the T5-4.7-plus.pdf from here . Where abouts did you pick up on GPIO47 for the interrupt?

[nodacat]

@special-k-uk check out section B4 (using the row/column headers around the pdf). There's a 6 pin connector (only 6 pin connector on the physical board) and to the left a pinout of INT/SDA/SCL. Match that pinout to the circuit diagram and you'll see INT=>47. You'll find a similar 6 pin connector on the other older T5-4.7.pdf . Comparing the two, you'll see the change from GPIO13 to GPIO47 (as well as the SDA/SCL changes).

[special-k-uk]

Ah, got it. It's the big red letters I didnt see. Thanks for your help with this one, really appreciated

[nodacat]

Haha no problem, it wasn’t super obvious that that was related to the touchscreen connector at first, I only figured that out by process of elimination with the other header/connectors when inspecting the board. But anyway, cheers man! Glad I could save someone else from further headache… now on to the rest of the yaml lol