From 2b80d7521183e2981954ba2b9cad64ed07824a37 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=C3=A1szl=C3=B3=20Monda?= <laci@monda.hu>
Date: Mon, 26 Sep 2016 01:40:54 +0200
Subject: [PATCH] Make the test LED actually blink.

---
 usb/blink-test-led.js | 32 ++++++++++++++++++--------------
 1 file changed, 18 insertions(+), 14 deletions(-)

diff --git a/usb/blink-test-led.js b/usb/blink-test-led.js
index 3f284954..2c90c707 100755
--- a/usb/blink-test-led.js
+++ b/usb/blink-test-led.js
@@ -18,18 +18,22 @@ usbInterface.claim();
 var endpointIn = usbInterface.endpoints[0];
 var endpointOut = usbInterface.endpoints[1];
 
-var str = '0';
-console.log('Sending "%s"', str);
-endpointOut.transfer(str, function(err) {
-    if (err) {
-        console.error("USB error: %s", err);
-        process.exit(1);
-    }
-    endpointIn.transfer(64, function(err2, receivedStr) {
-        if (err2) {
-            console.error("USB error: %s", err2);
-            process.exit(2);
+var state = '1';
+
+setInterval(function() {
+    console.log('Sending ', state);
+    state = state === '1' ? '0' : '1'
+    endpointOut.transfer(state, function(err) {
+        if (err) {
+            console.error("USB error: %s", err);
+            process.exit(1);
         }
-        console.log('Received "%s"', receivedStr);
-    })
-});
+        endpointIn.transfer(64, function(err2, receivedStr) {
+            if (err2) {
+                console.error("USB error: %s", err2);
+                process.exit(2);
+            }
+            console.log('Received "%s"', receivedStr);
+        })
+    });
+}, 500)