Well, after reading a few of those topics found with Google, I was able to merge in a small “run the command ifconfig” snippet into my RPi test sketch when pressing a button on V5… after some syntax fiddling, it seems to work.
This NodeJS example might help you get started. (NOTE: mine is setup for my Local Server, so you will need to adjust accordingly.)
var Gpio = require('onoff').Gpio; // links variable 'Gpio' to the all important onoff GPIO control library
var Blynk = require('blynk-library'); // Links variable 'Blynk' to the Blynk Library
var AUTH = 'cda957435xxxxxxx283c95018f'; // My top secret auth code... useless to anyone on the cloud ;P
var blynk = new Blynk.Blynk(AUTH, options = { connector : new Blynk.TcpClient( options = { addr:"10.10.3.13", port:8442 } ) });
var process = require('child_process'); // Allows this script to run CLI commands? Used in the "run the command ifconfig" function
var v1 = new blynk.VirtualPin(1); // Setup Button Widget on V1 with variable 'v1'
var v5 = new blynk.VirtualPin(5); // Setup Button Widget on V5 with variable 'v5'
var v9 = new blynk.VirtualPin(9); // Setup Display Widget on V9 with variable 'v9'
var v10 = new blynk.VirtualPin(10); // Setup LED Widget on V10 with variable 'v10'
v1.on('write', function(param) { // Watches for V1 Button
console.log('V1:', param[0]); // prints value to CLI
if (param == 0) {
blynk.virtualWrite(10, 0); // V10 Widget (ORANGE) LED OFF
} else if (param == 1) {
blynk.virtualWrite(10, 1023); // V10 Widget (ORANGE) LED ON
}
});
// "run the command ifconfig"
v5.on('write', function(param) { // Watches for V5 Button
console.log('V5:', param[0]); // prints value to CLI
if (param == 1) { // Runs the CLI command ifconfig if the button on V5 is pressed
process.exec('ifconfig',function (err,stdout,stderr) {
if (err) {
console.log("\n"+stderr);
} else {
console.log(stdout);
}
})
}
});
v9.on('read', function() { // I don't understand why this says read??
v9.write(new Date().getSeconds()); // but this sends the seconds 0-59 to the Display Widget
});
led = new Gpio(18, 'out'), // Sets up the BCM pin 18 as an output for the LED and assigns it to variable "led"
button = new Gpio(25, 'in', 'both'); // Sets up the BCM pin 25 as an input registering both rising and falling for the variable "button"
button.watch(function (err, value) { // Watches for button press and assigns 0/1 to value
if (err) {
throw err; // Some form of error handling
}
led.writeSync(value); // Sends value (0/1) to Physical LED
if (value == 0) {
blynk.virtualWrite(2, 0); // V2 Widget (BLUE) LED off
blynk.virtualWrite(3, 1023); // V3 Widget (RED) LED on
} else if (value == 1) {
blynk.virtualWrite(2, 1023); // V2 (BLUE) Widget LED on
blynk.virtualWrite(3, 0); // V3 (RED) Widget LED off
}
});
