94 lines
No EOL
2.2 KiB
JavaScript
94 lines
No EOL
2.2 KiB
JavaScript
const { exec } = require('child_process');
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function openPort(port){
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return new Promise((resolve, reject) => {
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var callbackError = function(err) {
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port.removeListener('error', callbackError);
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port.removeListener('open', callbackError);
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reject(err.message);
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};
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var callbackOpen = function(data) {
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port.removeListener('error', callbackError);
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port.removeListener('open', callbackOpen);
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resolve("port open: ok");
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};
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port.on('error', callbackError);
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port.on('open', callbackOpen);
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port.open();
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})
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}
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function runSyncExec(command){
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return new Promise((resolve, reject) => {
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exec(command, (error, stdout, stderr) => {
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if(error == null) resolve(stdout);
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reject(error);
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});
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})
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}
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async function writeData(port, data, readbytes, timeout){
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return new Promise((resolve, reject) => {
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//readbytes = 0 = broadcast
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if(readbytes == undefined) readbytes = 0;
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if(timeout == undefined) timeout = 10000;//10s, default timeout MASTERA je 3s
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//cmd-manager mame http route POST / terminal a tomu sa tiez nastavuje timeout!!!
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var callback = function(data) {
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rsPortReceivedData.push(...data);
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let l = rsPortReceivedData.length;
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if(l >= readbytes)
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{
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port.removeListener('data', callback);
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clearTimeout(t);
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resolve(rsPortReceivedData);
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}
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};
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port.removeListener('data', callback);
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let t = setTimeout(() => {
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port.removeListener('data', callback);
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console.log("serialport helper: writeData TIMEOUT READING", rsPortReceivedData);
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reject("TIMEOUT READING");
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}, timeout);
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let rsPortReceivedData = [];
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if(readbytes > 0) port.on('data', callback);
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port.write(Buffer.from(data), function(err) {
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if (err) {
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port.removeListener('data', callback);
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reject(err.message);
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}
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if(readbytes == 0)
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{
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resolve(rsPortReceivedData);
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}
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});
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})
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}
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module.exports = {
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openPort,
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runSyncExec,
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writeData
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} |