summaryrefslogtreecommitdiffstats
path: root/assets/js/utils.js
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--assets/js/utils.js29
1 files changed, 29 insertions, 0 deletions
diff --git a/assets/js/utils.js b/assets/js/utils.js
new file mode 100644
index 0000000..8ce3c6e
--- /dev/null
+++ b/assets/js/utils.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();
+}