99 lines
2.2 KiB
JavaScript
Executable file
99 lines
2.2 KiB
JavaScript
Executable file
const { exec } = require('child_process');
|
|
|
|
function openPort(port) {
|
|
return new Promise((resolve, reject) => {
|
|
|
|
var callbackError = function(err) {
|
|
port.removeListener('error', callbackError);
|
|
port.removeListener('open', callbackError);
|
|
|
|
reject(err.message);
|
|
};
|
|
|
|
var callbackOpen = function(data) {
|
|
port.removeListener('error', callbackError);
|
|
port.removeListener('open', callbackOpen);
|
|
|
|
resolve("port open: ok");
|
|
};
|
|
|
|
port.on('error', callbackError);
|
|
port.on('open', callbackOpen);
|
|
|
|
port.open();
|
|
|
|
})
|
|
}
|
|
|
|
function runSyncExec(command) {
|
|
return new Promise((resolve, reject) => {
|
|
|
|
exec(command, (error, stdout, stderr) => {
|
|
if (error == null) resolve(stdout);
|
|
reject(error);
|
|
});
|
|
|
|
})
|
|
}
|
|
|
|
async function writeData(port, data, readbytes, timeout) {
|
|
return new Promise((resolve, reject) => {
|
|
|
|
// If first item in data array is 255, we just write broadcast command to rsPort
|
|
// We wait 3 seconds and resolve(["broadcast"])
|
|
// It is important to resolve with array
|
|
if (data[0] == 255) {
|
|
|
|
port.write(Buffer.from(data), function(err) {
|
|
if (err) {
|
|
reject(err.message);
|
|
}
|
|
});
|
|
|
|
setTimeout(resolve, 3000, ["broadcast"]);
|
|
return;
|
|
}
|
|
|
|
//cmd-manager mame http route POST / terminal a tomu sa tiez nastavuje timeout!!!
|
|
|
|
var callback = function(data) {
|
|
rsPortReceivedData.push(...data);
|
|
let l = rsPortReceivedData.length;
|
|
|
|
if (l >= readbytes) {
|
|
port.removeListener('data', callback);
|
|
|
|
clearTimeout(t);
|
|
resolve(rsPortReceivedData);
|
|
}
|
|
};
|
|
|
|
port.removeListener('data', callback);
|
|
|
|
let t = setTimeout(() => {
|
|
port.removeListener('data', callback);
|
|
|
|
//console.log("serialport helper: writeData TIMEOUT READING", rsPortReceivedData);
|
|
|
|
reject("TIMEOUT READING");
|
|
}, timeout);
|
|
|
|
let rsPortReceivedData = [];
|
|
|
|
port.on('data', callback);
|
|
|
|
port.write(Buffer.from(data), function(err) {
|
|
if (err) {
|
|
port.removeListener('data', callback);
|
|
reject(err.message);
|
|
}
|
|
|
|
});
|
|
})
|
|
}
|
|
|
|
module.exports = {
|
|
openPort,
|
|
runSyncExec,
|
|
writeData
|
|
}
|