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authorErnesto Castellotti <mail@ernestocastellotti.it>2023-01-11 18:55:39 +0100
committerSimone <26844016+simonebortolin@users.noreply.github.com>2023-01-12 00:02:02 +0100
commit141037771670544f3905a2674f33cad5ca753ed7 (patch)
tree1d9a29888a71fdece5afee7f85bf6fac20a9e944 /assets/js/serialUtil.js
parentFix outputMsgCallback waitFailbackShell (diff)
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Diffstat (limited to 'assets/js/serialUtil.js')
-rw-r--r--assets/js/serialUtil.js29
1 files changed, 29 insertions, 0 deletions
diff --git a/assets/js/serialUtil.js b/assets/js/serialUtil.js
new file mode 100644
index 0000000..8ce3c6e
--- /dev/null
+++ b/assets/js/serialUtil.js
@@ -0,0 +1,29 @@
+function delay(ms) {
+ return new Promise(resolve => setTimeout(resolve, ms));
+}
+
+async function openPortLineBreak(port, baudRate, outputErrorCallback) {
+ try {
+ await port.open({ baudRate: baudRate });
+ } catch (err) {
+ outputErrorCallback(`Error: ${err.message}`);
+ return;
+ }
+
+ const textDecoder = new TextDecoderStream();
+ const readableStreamClosed = port.readable.pipeTo(textDecoder.writable);
+ const reader = await textDecoder.readable.pipeThrough(new TransformStream(new LineBreakTransformer())).getReader();
+ const textEncoderStream = new TextEncoderStream();
+ const writerStreamClosed = textEncoderStream.readable.pipeTo(port.writable);
+ const writer = await textEncoderStream.writable.getWriter();
+
+ return { reader, writer, readableStreamClosed, writerStreamClosed };
+}
+
+async function closePortLineBreak(port, reader, writer, readableStreamClosed, writerStreamClosed) {
+ reader.cancel();
+ await readableStreamClosed.catch(() => { /* Ignore the error */ });
+ writer.close();
+ await writerStreamClosed;
+ await port.close();
+}