Console log not showing anything in Serial (COM port) about badgy HOT 7 CLOSED

If you call display.init with a baud rate, it will try to initialize the Serial port again. Try just calling display.init() without a parameter. Serial is supported and 115200 should be fine.

from badgy.

Yes, I've excluded Serial.begin, as it is defined also in display.init(115200), but no text in console.

There was a readable text in console when connecting to WiFi, but my Serial.println is beeing ignored.

Does matter this settings of the board in Arduino IDE?

from badgy.

I've made a few tests and my observation is that console is fine with this code:

#include <GxEPD.h>
#include <GxGDEW029T5/GxGDEW029T5.h>
#include <GxIO/GxIO_SPI/GxIO_SPI.h>
#include <GxIO/GxIO.h>

GxIO_Class io(SPI, SS, 0, 2);
GxEPD_Class display(io); // default selection of D4, D2

void setup() {
  display.init(115200); // enable diagnostic output on Serial
  display.setRotation(3);
  Serial.println("Setup");
  Serial.print("..... :) .....");
  Serial.println();

  /*pinMode(1, INPUT_PULLUP); //down
    pinMode(3, INPUT_PULLUP); //left
    pinMode(5, INPUT_PULLUP); //center
    pinMode(12, INPUT_PULLUP); //right
    pinMode(10, INPUT_PULLUP); //up*/

  Serial.println("Setup done, yeah");
}

But when I enable pinMode lines, it won't show anything (even not timestamp in console):

When I look to schematic_v2.pdf, there is UP and DOWN connected to TXD/RXD. Aren't these shared with serial?

from badgy.

Ahh yes. The button is using the TX/RX pins. When you enable them, they are inputs, so no serial protocol output. I am sure I saw in some readme that you can't use serial output if using buttons - a vague memory I think??!

Steve

from badgy.

The shared pins with TX/RX for the buttons is a limitation of the ESP8266 module and the fact the paper display needs so many pins to operate. It's either use serial output, or use buttons, not both.

from badgy.

Found it - #27 (comment)

from badgy.

Thanks, it's clear now. It's sad.

It's fine to disable only GPIO1.

/pinMode(1, INPUT_PULLUP); //down/
pinMode(3, INPUT_PULLUP); //left
pinMode(5, INPUT_PULLUP); //center
pinMode(12, INPUT_PULLUP); //right
pinMode(10, INPUT_PULLUP); //up

from badgy.