From 880aa06ad544a96be8a459812d3066d7a650ec85 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=C3=A1szl=C3=B3=20Monda?= <laci@monda.hu>
Date: Mon, 7 Aug 2017 02:30:17 +0200
Subject: [PATCH] Add wait-until-i2c-dies.js

---
 usb/wait-until-i2c-dies.js | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100755 usb/wait-until-i2c-dies.js

diff --git a/usb/wait-until-i2c-dies.js b/usb/wait-until-i2c-dies.js
new file mode 100755
index 00000000..058f118f
--- /dev/null
+++ b/usb/wait-until-i2c-dies.js
@@ -0,0 +1,30 @@
+#!/usr/bin/env node
+let uhk = require('./uhk');
+let [endpointIn, endpointOut] = uhk.getUsbEndpoints();
+var arg = process.argv[2] || '';
+let lastWatchdogCounter = -1;
+
+function monitorI2c() {
+    var payload = new Buffer([uhk.usbCommands.readDebugInfo]);
+//    console.log('Sending ', uhk.bufferToString(payload));
+    endpointOut.transfer(payload, function(err) {
+        if (err) {
+            console.error("USB error: %s", err);
+            process.exit(1);
+        }
+        endpointIn.transfer(64, function(err2, receivedBuffer) {
+            if (err2) {
+                console.error("USB error: %s", err2);
+                process.exit(2);
+            }
+            let watchdogCounter = (receivedBuffer[1] << 0) + (receivedBuffer[2] << 8) + (receivedBuffer[3] << 16) + (receivedBuffer[4] << 24);
+            if (watchdogCounter === lastWatchdogCounter) {
+                process.exit(0);
+            }
+//            console.log('Received', watchdogCounter);
+            setTimeout(monitorI2c, 100)
+        })
+    });
+}
+
+monitorI2c();