MAX7219 Digit Display - Not working anymore

majoto85 commented 1 year ago

The problem

Hello,

I updated to the latest ESPHome version (2022.12.0) and the MAX7219 digit display no longer works. I've reduced everything to the bare essentials to exclude other sources of error, but even a simple "Hello" is no longer displayed.

Thank you

Which version of ESPHome has the issue?

2022.12.0

What type of installation are you using?

Home Assistant Add-on

Which version of Home Assistant has the issue?

2022.12.5

What platform are you using?

ESP32

Board

NodeMCU

Component causing the issue

MAX7219 Digit Display

Example YAML snippet

display:
  - platform: max7219digit
    cs_pin: 5
    num_chips: 4
    intensity: 15
    id: my_display
    lambda: |-
            it.print(0, 0, id(digit_font), "HELLO!");

Anything in the logs that might be useful for us?

No

Additional information

No response

jtbnz commented 1 year ago

I also have this issue after flashing via serial. No errors in logs. Last displayed info was left on the display until a power cycle.

jtbnz commented 1 year ago

Trying to debug further, using log level very_verbose no errors are generated, the lamda is being executed.

display:

platform: max7219digit cs_pin: GPIO21 num_chips: 4 intensity: 15

lambda: |- ESP_LOGD("custom","Before Print"); it.print(0, 0, id(my_font), "123"); ESP_LOGD("custom","After Print");

From Logfile: [14:24:51][VV][scheduler:196]: Running interval 'update' with interval=500 last_execution=28994 (now=29495) [14:24:51][D][custom:091]: Before Print [14:24:51][D][custom:093]: After Print [14:24:52][VV][scheduler:196]: Running interval 'update' with interval=500 last_execution=29494 (now=29997) [14:24:52][D][custom:091]: Before Print [14:24:52][D][custom:093]: After Print

Full log attached logs_garagetimer_logs.txt

jtbnz commented 1 year ago

Changing the cs_pin from GPIO21 to GPIO17 and clk_pin from GPIO19 to GPIO04 fixed this for me.

3X ESP32 Dev kit C V2 has this issue and was fixed by moving pins

esphome / issues