thooge/esp32-nmea2000-obp60
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better handling of result visibility

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This commit is contained in:
andreas
2023-09-07 20:43:55 +02:00
parent 54693e0b27
commit e8c6a72a43
4 changed files with 46 additions and 10 deletions
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6
webinstall/install.js
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@@ -13,8 +13,8 @@ import * as zip from "https://cdn.jsdelivr.net/npm/@zip.js/zip.js@2.7.29/+esm";
const NAMEOFFSET = 48;
const CHIPOFFSET=NAMEOFFSET+64;
const MINSIZE = HDROFFSET + CHIPOFFSET + 32;
const imageMagic=0xe9; //at byte 0
const imageCheckBytes = {
0: 0xe9, //image magic
288: 0x32, //app header magic
289: 0x54,
290: 0xcd,
@@ -25,7 +25,6 @@ import * as zip from "https://cdn.jsdelivr.net/npm/@zip.js/zip.js@2.7.29/+esm";
length--;
}
if (length <= 0) return "";
let decoder = new TextDecoder();
return buffer.substr(start,length);
}
/**
@@ -38,6 +37,9 @@ import * as zip from "https://cdn.jsdelivr.net/npm/@zip.js/zip.js@2.7.29/+esm";
if (content.length < (MINSIZE+startOffset)) {
throw new Error(prfx+"image to small, only " + content.length + " expected " + (MINSIZE+startOffset));
}
if (content.charCodeAt(0) != imageMagic){
throw new Error("no image magic "+imageMagic+" at start of "+prfx+"image");
}
for (let idx in imageCheckBytes) {
let cb=content.charCodeAt(parseInt(idx)+startOffset);
if (cb != imageCheckBytes[idx]) {