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Move timeout to a promise

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This commit is contained in:
Skylar Grant 2024-08-18 13:46:10 -04:00
parent 32893467bb
commit 7afc662ba7
2 changed files with 95 additions and 32 deletions
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85
src/custom_modules/VoidGPIO.js
View File

@ -1,20 +1,49 @@
const { exec } = require('child_process');
const pins = [
{ key: 'igniter', board: 13, bcm: 27, mode: 'OUT' },
{ key: 'exhaust', board: 15, bcm: 22, mode: 'OUT' },
{ key: 'auger', board: 7, bcm: 4, mode: 'OUT' },
{ key: 'pof', board: 16, bcm: 23, mode: 'IN' },
{ key: 'vacuum', board: 22, bcm: 25, mode: 'IN' }
{
key: 'igniter',
board: 13,
bcm: 27,
mode: 'OUT',
defaultState: 0
},
{
key: 'exhaust',
board: 15,
bcm: 22,
mode: 'OUT',
defaultState: 1
},
{
key: 'auger',
board: 7,
bcm: 4,
mode: 'OUT',
defaultState: 0
},
{
key: 'pof',
board: 16,
bcm: 23,
mode: 'IN'
},
{
key: 'vacuum',
board: 22,
bcm: 25,
mode: 'IN' }
];
const sleep = ms => new Promise(resolve => setTimeout(resolve, ms));
pins.forEach(pin => {
console.log(`Key: ${pin.key}, Board: ${pin.board}, BCM: ${pin.bcm}, Mode: ${pin.mode}`);
});
module.exports = {
// Function to toggle a pin on-then-off
// Calls the GPIO Interface script to toggle a pin's state opposite of its current state
togglePin(pin, callback) {
exec(`python3 src/python/gpio_interface.py toggle ${pin}`, (error, stdout, stderr) => {
if (error) {
@ -23,26 +52,39 @@ module.exports = {
if (stderr) {
return callback(new Error(stderr));
}
console.log(`Successfully toggled pin ${pin}`);
});
},
// Function to sense a pin state
sensePin(pin, callback) {
exec(`python3 src/python/gpio_interface.py sense ${pin}`, (error, stdout, stderr) => {
// Calls the GPIO Interface script to read a pin's state
readPin(pin, callback) {
exec(`python3 src/python/gpio_interface.py read ${pin}`, (error, stdout, stderr) => {
if (error) return callback(error);
if (stderr) return callback(new Error(stderr));
callback(null, stdout.trim());
});
},
// Calls the GPIO Interface script to set a pin's state regardless of its current state
setPin(pin, state, callback) {
exec(`python 3 src/python/gpio_interface.py set ${pin} ${state}`, (error, stdout, stderr) => {
if (error) {
console.error(`Error sensing pin ${pin}: ${error.message}`);
return callback(error);
}
if (stderr) {
console.error(`Stderr while sensing pin ${pin}: ${stderr}`);
return callback(new Error(stderr));
}
console.log(`Pin ${pin} state: ${stdout.trim()}`);
callback(stdout.trim(), null);
});
callback(null);
})
},
// Toggle pins sequentially and then sense pin states
// Boot up sanity check during debug mode
debugInit() {
console.log('Resetting all output pins.');
pins.forEach(async (pin) => {
if (pin.mode === 'OUT') {
this.setPin(pin.board, pin.defaultState, err => {
if (err) throw err;
console.log(`Set ${pin.key} pin to ${pin.defaultState}.`);
});
};
});
pins.forEach(async (pin) => {
switch (pin.mode) {
case 'OUT':
@ -50,14 +92,13 @@ module.exports = {
if (err) throw err;
});
// Wait 1000ms before toggling again.
await setTimeout(() => {
this.togglePin(pin.board, err => {
if (err) throw err;
});
}, 1000);
await sleep(1000);
this.togglePin(pin.board, err => {
if (err) throw err;
});
break;
case 'IN':
this.sensePin(pin.board, (state, err) => {
this.readPin(pin.board, (err, state) => {
if (err) throw err;
console.log(`${pin.key} state: ${state}`);
});

42
src/python/gpio_interface.py
View File

@ -1,6 +1,5 @@
import RPi.GPIO as GPIO
import sys
import time
# Initialize GPIO using Board mode for pin numbering
GPIO.setmode(GPIO.BOARD)
@ -27,22 +26,35 @@ def toggle_pin(pin):
# Exit with 1 for failure
return 1
def sense_pin(pin):
def read_pin(pin):
setup_pin(pin, 'IN')
try:
# Sense pin state
# Read pin state
state = GPIO.input(pin)
# Return 1 if pin is HIGH, 0 if LOW
return 1 if state == GPIO.HIGH else 0
except Exception as e:
# Handle errors
print(f"Error sensing pin {pin}: {e}")
print(f"Error reading pin {pin}: {e}")
# Return -1 on error
return -1
def set_pin_state(pin, state):
setup_pin(pin, 'OUT')
try:
# Set the pin state to either HIGH (1) or LOW (0)
GPIO.output(pin, GPIO.HIGH if state == 1 else GPIO.LOW)
# Exit with 0 for success
return 0
except Exception as e:
# Handle errors
print(f"Error setting pin {pin} to state {state}: {e}")
# Exit with 1 for failure
return 1
def main():
if len(sys.argv) < 2:
print("Usage: python3 gpio_interface.py <command> <pin>")
if len(sys.argv) < 3:
print("Usage: python3 gpio_interface.py <command> <pin> [<state>]")
sys.exit(1)
command = sys.argv[1].lower()
@ -51,13 +63,23 @@ def main():
if command == "toggle":
result = toggle_pin(pin)
sys.exit(result)
elif command == "sense":
result = sense_pin(pin)
elif command == "read":
result = read_pin(pin)
print(result)
sys.exit(0 if result >= 0 else 1)
elif command == "set":
if len(sys.argv) < 4:
print("Usage: python3 gpio_interface.py set <pin> <state>")
sys.exit(1)
state = int(sys.argv[3])
if state not in [0, 1]:
print("Invalid state. Use 0 for LOW or 1 for HIGH.")
sys.exit(1)
result = set_pin_state(pin, state)
sys.exit(result)
else:
print("Invalid command. Use 'toggle' or 'sense'.")
print("Invalid command. Use 'toggle', 'read', or 'set'.")
sys.exit(1)
if __name__ == "__main__":
main()
main()