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support multiple named serial connections, change default baudrate #551

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merged 1 commit into from
Nov 10, 2023
Merged

support multiple named serial connections, change default baudrate #551

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18 changes: 9 additions & 9 deletions packages/serial/serial.mjs
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Original file line number Diff line number Diff line change
Expand Up @@ -6,23 +6,23 @@ This program is free software: you can redistribute it and/or modify it under th

import { Pattern, isPattern } from '@strudel.cycles/core';

var writeMessage;
var writeMessagers = {};
var choosing = false;

export async function getWriter(br = 38400) {
export async function getWriter(name, br) {
if (choosing) {
return;
}
choosing = true;
if (writeMessage) {
return writeMessage;
if (name in writeMessagers) {
return writeMessagers[name];
}
if ('serial' in navigator) {
const port = await navigator.serial.requestPort();
await port.open({ baudRate: br });
const encoder = new TextEncoder();
const writer = port.writable.getWriter();
writeMessage = function (message, chk) {
writeMessagers[name] = function (message, chk) {
const encoded = encoder.encode(message);
if (!chk) {
writer.write(encoded);
Expand Down Expand Up @@ -63,10 +63,10 @@ function crc16(data) {
return crc & 0xffff;
}

Pattern.prototype.serial = function (br = 38400, sendcrc = false, singlecharids = false) {
Pattern.prototype.serial = function (br = 115200, sendcrc = false, singlecharids = false, name = 'default') {
return this.withHap((hap) => {
if (!writeMessage) {
getWriter(br);
if (!(name in writeMessagers)) {
getWriter(name, br);
}
const onTrigger = (time, hap, currentTime) => {
var message = '';
Expand Down Expand Up @@ -108,7 +108,7 @@ Pattern.prototype.serial = function (br = 38400, sendcrc = false, singlecharids
const offset = (time - currentTime + latency) * 1000;

window.setTimeout(function () {
writeMessage(message, chk);
writeMessagers[name](message, chk);
}, offset);
};
return hap.setContext({ ...hap.context, onTrigger, dominantTrigger: true });
Expand Down