Comments (8)
fivdi
commented on June 12, 2024
I'm afraid I'm not familiar with Electron and can't provide much help. Are error messages displayed when the application is run?
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fivdi
commented on June 12, 2024
Duplicate of atom/atom#22638
onoff depends on a native Node module called epoll. Special steps need to be taken when installing native Node modules like epoll with Electron. For additional information see here.
If these special steps are not taken into account, errors complaining about incorrect NODE_MODULE_VERSION numbers like the errors shown here can occur.
@lakshanthad Is your application showing NODE_MODULE_VERSION errors or other errors?
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leerlemoniii
commented on June 12, 2024
might be the missing semi colon on myFunction call
Btn.onclick = function() {
myFunction()
};
also do not see in this code where you are loading the gpio library
…On Wed, Jun 23, 2021 at 12:39 AM Lakshantha Dissanayake < ***@***.***> wrote:
I have created a simple app that can control the GPIO pins on the
Raspberry Pi with a simple button press. However, when I press the button,
there is no response from the GPIO pins (here connected to GPIO 24). Also,
I have already installed the onoff module from npm install onoff. When I
create a simple javascript file with only GPIO control and run node
<file_name>.js, it runs successfully. But when I try to integrate into
electron, it stops working. Please check the following code. Help would be
appreciated.
index.html
<!DOCTYPE html><html>
<body>
<h1>GPIO Control</h1>
<button id="Btn" class="button is-primary">LED ON</button>
<script src="./render.js"></script>
</body></html>
main.js
const { app, BrowserWindow } = require('electron')const path = require('path')
function createWindow () {
const mainWindow = new BrowserWindow({
width: 800,
height: 600,
webPreferences: {
nodeIntegration: true
}
})
mainWindow.loadFile('index.html')}
app.whenReady().then(() => {
createWindow()
app.on('activate', function () {
if (BrowserWindow.getAllWindows().length === 0) createWindow()
})})
app.on('window-all-closed', function () {
if (process.platform !== 'darwin') app.quit()})
render.js
var Gpio = require('onoff').Gpio; var LED = new Gpio(24, 'out');
const Btn = document.getElementById("Btn");Btn.onclick = function() {
myFunction()};
function myFunction() {
LED.writeSync(1);}
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lakshanthad
commented on June 12, 2024
Hello. Thank you all for the replies. I have now made it work using ipcMain and ipcRenderer modules. Not sure whether there is an easy way to do this
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fivdi
commented on June 12, 2024
Thank you for the feedback. I guess if it's working now the issue can be closed.
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NathanJ4620
commented on June 12, 2024
the ipcMain and ipcRenderer are the only ways to communicate between electron and an external Node instance. This functionality is to help maintain security on the host device when creating a shipped application.
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TheGrateMartian
commented on June 12, 2024
I am trying to do the same. @lakshanthad Can you share please show/share what you did to get it workin?
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HelloSmartFactory
commented on June 12, 2024
@TheGrateMartian
Here is a sample using ipc.
https://github.com/boraciner/electron-gpio
from onoff.
Related Issues (20)
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- Cannot run on non Rpi system HOT 1
- TypeError: writeSync is not a function HOT 4
- My computer does not have a /sys/class/gpio directory, but has /dev/gpiochip* HOT 1
- Interrupt misfire HOT 3
- Raspberry 4 - malloc(): corrupted top size HOT 3
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