ESP32 not working, giving out gibberish after connected.

[espruino-discuss3]

Posted at 2025-01-10 by tabanopro

Hello, I received my esp 32 a few days ago. I flashed the firmware to the espruino firmware using esptools.py. I connected it to the espurino web ide, it started giving out random characters, and there was a message that said No response from the board.
The console looks like this in the picture.

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Attachments:

• Screenshot 2025-01-10 191334.png

[espruino-discuss3]

Posted at 2025-01-11 by @MaBecker

change baud rate to 115200

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Posted at 2025-01-11 by tabanopro

I'm new, how do I do it in the ide? When I flashed the firmware the band rate is set to that.

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Posted at 2025-01-11 by @MaBecker

click the gear and select communications

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Attachments:

• Espruino Web IDE.png

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Posted at 2025-01-11 by tabanopro

Thank you, that did work but I am getting this now in the console.

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Attachments:

• Screenshot 2025-01-11 191534.png

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Posted at 2025-01-12 by @MaBecker

use this to flash your board

https://forum.espruino.com/conversations/401440/#comment17610998

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Posted at 2025-01-12 by tabanopro

Thank you, it worked. Why aren't some modules recognized such as ST7789.js or Graphics

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Attachments:

• Screenshot 2025-01-12 194708.png

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Posted at 2025-01-12 by tabanopro

thanks

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Posted at 2025-01-13 by @MaBecker

please check the module page

https://www.espruino.com/Modules

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Posted at 2025-01-13 by @MaBecker

there is a page explaining howto connect an ST7789 display

https://www.espruino.com/ST7789

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Posted at 2025-01-13 by @MaBecker

btw which board do you use?

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Posted at 2025-01-13 by tabanopro

I use esp32? apparently the module is found in my phone but not in my pc.

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Posted at 2025-01-13 by @enaon

in order for the module to be available, the webIde does some background magic, it auto downloads the module from github and sends it to the device, if you upload some code that uses it.

You cannot just connect to a "fresh" device from the web ide and do a "require("ST7789")" on the left side, the module will not be found.

place some code on the right hand side that calls "require("ST7789")" , then upload to ram, then you can use the "require("ST7789")" on the left hand side, the webIde will auto download the module for you.

for example, you can type

test=require("ST7789");

on the right hand side, and then upload this to a file named "test" in the flash using the webIde's "send to espruino" button.

Then, using the disk button on the webIde, you can view the "test" file you just uploaded, and you will notice that it also includes the module.

So, if you later reset(); and call this file from the left hand side,

require("Storage").read("test")

the module "ST7789" will be available on the left hand side, without the need for the loader to download it again for you.

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Posted at 2025-01-13 by @fanoush

Why aren't some modules recognized such as ... Graphics

That's a builtin class, not module https://www.espruino.com/Reference#Graphics

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Posted at 2025-01-13 by @gfwilliams

require("Graphics").createCallback

Do you remember where you found that code? As @fanoush says it's not a module so you don't need require

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Posted at 2025-01-13 by tabanopro

Hello, I managed to get it to work on the web ide using Bluetooth. Now it gives this out.

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Attachments:

• Screenshot 2025-01-13 191502.png

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Posted at 2025-01-14 by @gfwilliams

We'd need to see what code you're using. It almost looks like you might be trying to use a library meant for something else

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Posted at 2025-01-19 by tabanopro

sorry for slow response, here is the code:

// Initialize SPI
var spi = new SPI();
spi.setup({
  sck: D18,    // SPI Clock (SCL)
  mosi: D23,   // SPI Data (SDA)
  baud: 8000000 // SPI speed (8 MHz)
});

// Define control pins
var dc = D16;  // Data/Command pin (DC)
var cs = D5;   // Chip Select pin (CS)
var res = D4;  // Reset pin (RES)

// Manually reset the display
digitalPulse(res, 0, 10); // Pulse reset pin low for 10ms
setTimeout(function() {
  // Initialize the ST7789 display
  var g = require("ST7789").connect({
    spi: spi,
    dc: dc,
    cs: cs,
    width: 240,  // Your display's width
    height: 240, // Your display's height
    color: true  // Enable color mode
  }, function() {
    g.clear();
    g.setColor(1, 0, 0);  // Set text color to red
    g.setFontVector(20);  // Set font size
    g.drawString("Hello, ESP32!", 10, 10); // Draw text
    g.flip(); // Refresh display
  });
}, 50); // Wait 50ms after reset

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Posted at 2025-01-20 by @gfwilliams

Where did you get this code from? It appears not to match what you're supposed to do for ST7789: https://www.espruino.com/ST7789

The module expects the pins used in a line, eg:

var g = require("ST7789").connect(spi, D16 /* DC */, D5 /* CE */, D23 /* RST */, function() {

but you've specified them in an object: var g = require("ST7789").connect({ spi: spi, dc: dc, cs: cs, ...

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Posted at 2025-02-01 by tabanopro

sorry for later reply, I got this code from chat gpt because I have no knowledge in espurino, I do know javascript

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Posted at 2025-02-03 by @gfwilliams

Ok - maybe just look at https://www.espruino.com/ST7789 and work from there. It seems Espruino is working fine - ChatGPT won't always give you the correct code