1 files changed, 86 insertions, 0 deletions
diff --git a/utils/debug/dmesg.js b/utils/debug/dmesg.js
new file mode 100755
index 0000000..e62b5e3
--- /dev/null
+++ b/utils/debug/dmesg.js
@@ -0,0 +1,86 @@
+#!/usr/bin/env node
+"use strict";
+
+let fs = require("fs")
+let child_process = require("child_process")
+
+function fatal(msg) {
+    console.log("Fatal error:", msg)
+    process.exit(1)
+}
+
+function main() {
+    let mapFileName = process.argv[2]
+    if (!mapFileName) {
+        console.log("usage: node " + process.argv[1] + " build/mytarget/source/myprog.map")
+        return
+    }
+    console.log("Map file: " + mapFileName)
+    let mapFile = fs.readFileSync(mapFileName, "utf8")
+    let addr = 0
+    let logSize = 1024 * 4 + 4
+    for (let ln of mapFile.split(/\r?\n/)) {
+        let m = /^\s*0x00000([0-9a-f]+)\s+(\S+)/.exec(ln)
+        if (m && m[2] == "codalLogStore") {
+            addr = parseInt(m[1], 16)
+            break
+        }
+    }
+    if (!addr) fatal("Cannot find codalLogStore symbol in map file")
+
+    let dirs = [
+        process.env["HOME"] + "/Library/Arduino15",
+        process.env["USERPROFILE"] + "/AppData/Local/Arduino15",
+        process.env["HOME"] + "/.arduino15",
+    ]
+
+    let pkgDir = ""
+
+    for (let d of dirs) {
+        pkgDir = d + "/packages/arduino/"
+        if (fs.existsSync(pkgDir)) break
+        pkgDir = ""
+    }
+
+    if (!pkgDir) fatal("cannot find Arduino packages directory")
+
+    let openocdPath = pkgDir + "tools/openocd/0.9.0-arduino/"
+    if (!fs.existsSync(openocdPath)) fatal("openocd not installed in Arduino")
+
+    let openocdBin = openocdPath + "bin/openocd"
+
+    if (process.platform == "win32")
+        openocdBin += ".exe"
+
+    let zeroCfg = pkgDir + "hardware/samd/1.6.8/variants/arduino_zero/openocd_scripts/arduino_zero.cfg"
+    let cmd = `init; set M(0) 0; mem2array M 8 ${addr} ${logSize}; parray M; exit`
+
+    console.log("Starting openocd")
+    child_process.execFile(openocdBin, ["-d2",
+        "-s", openocdPath + "/share/openocd/scripts/",
+        "-f", zeroCfg,
+        "-c", cmd], {
+            maxBuffer: 1 * 1024 * 1024,
+        }, (err, stdout, stderr) => {
+            if (err) {
+                fatal("error: " + err.message)
+            }
+            let buf = new Buffer(logSize)
+            for (let l of stdout.split(/\r?\n/)) {
+                let m = /^M\((\d+)\)\s*=\s*(\d+)/.exec(l)
+                if (m) {
+                    buf[parseInt(m[1])] = parseInt(m[2])
+                }
+            }
+            let len = buf.readUInt32LE(0)
+            if (len == 0 || len > buf.length) {
+                console.log(stderr)
+                console.log("No logs.")
+            } else {
+                console.log("*\n* Logs\n*\n")
+                console.log(buf.slice(4, 4 + len).toString("binary"))
+            }
+        })
+}
+
+main()
+\ No newline at end of file