update

sensehat.js

@@ -10,19 +10,8 @@ app.use(express.static('public'))
 sense.setRotation(180)
 sense.lowLight = true
 
-const job = new CronJob(
+const color_red = [255, 0]
-    '*/5 * * * * *',
+const color_blue = [0, 0, 255]
-    async () => {
-        // 测试 http://zhao 的连通性
-        request('http://zhao', (err, res, body) => {
-            console.log(err, res.statusCode)
-        })
-    },
-    null,
-    true
-)
-
-const blue = [0, 0, 255]
 const leds = [
     [0, 0, 0, 0, 0, 0, 0, 0],
     [0, 0, 0, 0, 0, 0, 0, 0],
@@ -35,13 +24,40 @@ const leds = [
 ]
 read_all_leds()
 
+let zhao_server_errors = 0
+
+const job = new CronJob(
+    '*/5 * * * * *',
+    async () => {
+        // 测试 http://zhao 的连通性
+        request('http://zhao', (err, res, body) => {
+            if (res.statusCode != 200) {
+                zhao_server_errors++
+            }
+            if (zhao_server_errors > 0) {
+                for (let i = 0; i < zhao_server_errors; i++) {
+                    const x = i % 8
+                    const y = Math.floor(i / 8)
+                    sense.setPixel(x, y, color_red)
+                }
+            } else {
+                let color = sense.getPixel(0, 0)
+                color[2] = (color[2] + 50) % 255
+                sense.setPixel(0, 0, color)
+            }
+        })
+    },
+    null,
+    true
+)
+
 io.on('connection', (client) => {
     client.emit('leds', leds)
     client.on('action', ({ action, x, y }) => {
         console.log({ action, x, y })
         switch (action) {
             case 'on':
-                sense.setPixel(Number(x), Number(y), blue)
+                sense.setPixel(Number(x), Number(y), color_blue)
                 leds[y][x] = 1
                 break
             case 'off':
@@ -49,7 +65,7 @@ io.on('connection', (client) => {
                 leds[y][x] = 0
                 break
             case 'hello':
-                sense.flashMessage('HELLO', 1, blue)
+                sense.flashMessage('HELLO', 1, color_blue)
                 sense.clear()
                 read_all_leds(0)
                 break