Top 10 Examples of "mcp-spi-adc in functional component" in JavaScript
Dive into secure and efficient coding practices with our curated list of the top 10 examples showcasing 'mcp-spi-adc' in functional components in JavaScript. Our advanced machine learning engine meticulously scans each line of code, cross-referencing millions of open source libraries to ensure your implementation is not just functional, but also robust and secure. Elevate your React applications to new heights by mastering the art of handling side effects, API calls, and asynchronous operations with confidence and precision.
// ID should be 6 characters long
piREST.set_id('34f5eQ');
piREST.set_name('energy_meter');
piREST.set_mode('bcm');
// Variables
current = 0;
power = 0;
// Start server
var server = app.listen(80, function() {
console.log('Listening on port %d', server.address().port);
});
// Sensor measurement loop
var sensor = mcpadc.open(channel, {speedHz: 20000}, function (err) {
if (err) throw err;
// Measurement interval
setInterval(function () {
// Read
sensor.read(function (err, reading) {
if (err) throw err;
// Calculate current
var measuredVoltage = reading.value * 3.3;
var measuredCurrent = (measuredVoltage/resistance) * 2000 / 1.41;
// Calculate power
var power = voltage * measuredCurrent;// ID should be 6 characters long
piREST.set_id('34f5eQ');
piREST.set_name('energy_meter');
piREST.set_mode('bcm');
// Variables
current = 0;
power = 0;
// Start server
var server = app.listen(80, function() {
console.log('Listening on port %d', server.address().port);
});
// Sensor measurement loop
var sensor = mcpadc.open(channel, {speedHz: 20000}, function (err) {
if (err) throw err;
// Measurement interval
setInterval(function () {
// Read
sensor.read(function (err, reading) {
if (err) throw err;
// Calculate current
var measuredVoltage = reading.value * 3.3;
var measuredCurrent = (measuredVoltage/resistance) * 2000 / 1.41;
// Calculate power
var power = voltage * measuredCurrent;// ID should be 6 characters long
piREST.set_id('34f5eQ');
piREST.set_name('energy_meter');
piREST.set_mode('bcm');
// Variables
current = 0;
power = 0;
// Start server
var server = app.listen(80, function() {
console.log('Listening on port %d', server.address().port);
});
// Sensor measurement loop
var sensor = mcpadc.open(channel, {speedHz: 20000}, function (err) {
if (err) throw err;
// Measurement interval
setInterval(function () {
// Read
sensor.read(function (err, reading) {
if (err) throw err;
// Calculate current
var measuredVoltage = reading.value * 3.3;
var measuredCurrent = (measuredVoltage/resistance) * 2000 / 1.41;
// Calculate power
var power = voltage * measuredCurrent;// ID should be 6 characters long
piREST.set_id('34f5eQ');
piREST.set_name('energy_meter');
piREST.set_mode('bcm');
// Variables
current = 0;
power = 0;
// Start server
var server = app.listen(80, function() {
console.log('Listening on port %d', server.address().port);
});
// Sensor measurement loop
var sensor = mcpadc.open(channel, {speedHz: 20000}, function (err) {
if (err) throw err;
// Measurement interval
setInterval(function () {
// Read
sensor.read(function (err, reading) {
if (err) throw err;
// Calculate current
var measuredVoltage = reading.value * 3.3;
var measuredCurrent = (measuredVoltage/resistance) * 2000 / 1.41;
// Calculate power
var power = voltage * measuredCurrent;// ID should be 6 characters long
piREST.set_id('34f5eQ');
piREST.set_name('energy_meter');
piREST.set_mode('bcm');
// Variables
current = 0;
power = 0;
// Start server
var server = app.listen(80, function() {
console.log('Listening on port %d', server.address().port);
});
// Sensor measurement loop
var sensor = mcpadc.open(channel, {speedHz: 20000}, function (err) {
if (err) throw err;
// Measurement interval
setInterval(function () {
// Read
sensor.read(function (err, reading) {
if (err) throw err;
// Calculate current
var measuredVoltage = reading.value * 3.3;
var measuredCurrent = (measuredVoltage/resistance) * 2000 / 1.41;
// Calculate power
var power = voltage * measuredCurrent;// ID should be 6 characters long
piREST.set_id('34f5eQ');
piREST.set_name('energy_meter');
piREST.set_mode('bcm');
// Variables
current = 0;
power = 0;
// Start server
var server = app.listen(80, function() {
console.log('Listening on port %d', server.address().port);
});
// Sensor measurement loop
var sensor = mcpadc.open(channel, {speedHz: 20000}, function (err) {
if (err) throw err;
// Measurement interval
setInterval(function () {
// Read
sensor.read(function (err, reading) {
if (err) throw err;
// Calculate current
var measuredVoltage = reading.value * 3.3;
var measuredCurrent = (measuredVoltage/resistance) * 2000 / 1.41;
// Calculate power
var power = voltage * measuredCurrent;return new Promise((resolve, reject) => {
let tempSensor = Mcpadc.open(0, {speedHz: 20000}, err => {
if (err) reject({ type: 'ERROR', message: 'Could not open mcpadc.', httpCode: 400, data: err })
tempSensor.read((err, reading) => {
if (err) reject({ type: 'ERROR', message: 'Could not read mcpadc.', httpCode: 400, data: err })
// map read value to from range 1(no humidity) - 0.3(max humidity) to range 0 - 100
let humidity = Util.map_range(reading.value, 1, 0.3, 0, 100);
resolve({
message: 'Here is the humidity.',
type: 'SUCCESS',
httpCode: 200,
data: [{"type": "HUMIDITY", "value": humidity}]
})
})
})
})
}RED.nodes.createNode(this,n);
this.pin = n.pin || 0;
this.interval = n.interval || 1000;
this.dnum = parseInt(n.dnum || 0);
this.bus = parseInt(n.bus || 0);
this.dev = n.dev || "3008";
var node = this;
var cb = function (err) { if (err) { node.error("Error: "+err); } };
var opt = { speedHz:20000, deviceNumber:node.dnum, busNumber:node.bus };
var chans = parseInt(this.dev.substr(3));
try {
fs.statSync("/dev/spidev"+node.bus+"."+node.dnum);
if (mcp3xxx.length === 0) {
for (var i=0; i= 0) && (pay < chans)) { pin = pay; }
else { node.warn("Payload needs to select channel 0 to "+(chans-1)); }
}
else { pin = parseInt(node.pin); }this.pin = n.pin || 0;
this.interval = n.interval || 1000;
this.dnum = parseInt(n.dnum || 0);
this.bus = parseInt(n.bus || 0);
this.dev = n.dev || "3008";
var node = this;
var cb = function (err) { if (err) { node.error("Error: "+err); } };
var opt = { speedHz:20000, deviceNumber:node.dnum, busNumber:node.bus };
var chans = parseInt(this.dev.substr(3));
try {
fs.statSync("/dev/spidev"+node.bus+"."+node.dnum);
if (mcp3xxx.length === 0) {
for (var i=0; i= 0) && (pay < chans)) { pin = pay; }
else { node.warn("Payload needs to select channel 0 to "+(chans-1)); }
}
else { pin = parseInt(node.pin); }
if (pin !== null) {this.interval = n.interval || 1000;
this.dnum = parseInt(n.dnum || 0);
this.bus = parseInt(n.bus || 0);
this.dev = n.dev || "3008";
var node = this;
var cb = function (err) { if (err) { node.error("Error: "+err); } };
var opt = { speedHz:20000, deviceNumber:node.dnum, busNumber:node.bus };
var chans = parseInt(this.dev.substr(3));
try {
fs.statSync("/dev/spidev"+node.bus+"."+node.dnum);
if (mcp3xxx.length === 0) {
for (var i=0; i= 0) && (pay < chans)) { pin = pay; }
else { node.warn("Payload needs to select channel 0 to "+(chans-1)); }
}
else { pin = parseInt(node.pin); }
if (pin !== null) {
mcp3xxx[pin].read(function (err, reading) {