pigpio unitialised before digitalWrite()

dlingo commented 5 years ago

Hi I am having trouble ending process gracefully and resetting gpio to a LOW state on exit.

Code:

import {exec} from "child_process";
import * as pigpio from "pigpio";
import {Gpio} from "pigpio";

const hwRelays = [5,6,13,16,19,20,21,26]

console.log("Initializing pigpio")
pigpio.initialize(); 
// pigpio initialized here...

exec('sleep 3', () => {
  console.log("3 second Delay");
});

process.on('SIGINT', () => {
  relay1.digitalWrite(0);
  relay2.digitalWrite(0);
    pigpio.terminate(); 
  // pigpio terminated here...
  console.log("Terminating  pigpio");
});

const relay1 = new Gpio(hwRelays[0], {mode: Gpio.OUTPUT})
const relay2 = new Gpio(hwRelays[1], {mode: Gpio.OUTPUT})

Error:

2019-06-03 22:22:12 gpioWrite: pigpio uninitialised, call gpioInitialise()
/home/pi/client/node_modules/pigpio/pigpio.js:88
    pigpio.gpioWrite(this.gpio, +level);
           ^

Error: pigpio error -31 in gpioWrite
    at Gpio.digitalWrite (/home/pi/client/node_modules/pigpio/pigpio.js:88:12)
    at Timeout.setTimeout [as _onTimeout] (/home/pi/client/dist/index.js:40:16)
    at listOnTimeout (internal/timers.js:535:17)
    at processTimers (internal/timers.js:479:7)

fivdi commented 5 years ago

If ctrl+c is hit when running the following program with Node.js v12.4.0 and pigpio v1.2.2

const exec = require("child_process").exec;
const pigpio = require("pigpio");
const Gpio = pigpio.Gpio;

const hwRelays = [17,18]

console.log("Initializing pigpio")
pigpio.initialize(); 
// pigpio initialized here...

exec('sleep 3', () => {
  console.log("3 second Delay");
});

process.on('SIGINT', () => {
  relay1.digitalWrite(0);
  relay2.digitalWrite(0);
    pigpio.terminate(); 
  // pigpio terminated here...
  console.log("Terminating  pigpio");
});

const relay1 = new Gpio(hwRelays[0], {mode: Gpio.OUTPUT})
const relay2 = new Gpio(hwRelays[1], {mode: Gpio.OUTPUT})

the output is

Initializing pigpio
^CTerminating  pigpio
3 second Delay

Everything works as expected and no error is thrown.

fivdi commented 5 years ago

The following stacktrace is shown above

2019-06-03 22:22:12 gpioWrite: pigpio uninitialised, call gpioInitialise()
/home/pi/client/node_modules/pigpio/pigpio.js:88
    pigpio.gpioWrite(this.gpio, +level);
           ^

Error: pigpio error -31 in gpioWrite
    at Gpio.digitalWrite (/home/pi/client/node_modules/pigpio/pigpio.js:88:12)
    at Timeout.setTimeout [as _onTimeout] (/home/pi/client/dist/index.js:40:16)
    at listOnTimeout (internal/timers.js:535:17)
    at processTimers (internal/timers.js:479:7)

This indicates that Gpio.digitalWrite was called on line 40 of index.js. However, the code posted above doesn't contains 40 lines. The stacktrace is not from the code posted. It's from something else.

fivdi commented 5 years ago

@dlingo any news on this one?

dlingo commented 5 years ago

@fivdi I updated my node install on the pi to V12.4 and pigpio to V1.2.2 and the problem was resolved. Yarn installed an earlier version because it could not find a type file for V1.2.2. Thanks for the help

fivdi commented 5 years ago

@dlingo good to hear that it was possible to resolve the issue and thank you for the feedback.

fivdi / pigpio

pigpio unitialised before digitalWrite() #76