diff --git a/server.js b/server.js
index 512b04a..f3e3b6e 100644
--- a/server.js
+++ b/server.js
@@ -31,14 +31,19 @@ const sensehat = {
             getPixel(x,y) 返回 [r,g,b]  获取一个点
             setPixels([[r,g,b]*64])
             getPixels() -> [[r,g,b]*64]
+
             flipH(redraw=true)  水平反转
             flipV(redraw=true)  垂直反转
+
             setRotation(r, redraw=true)  设置旋转，r 初始为 0，r 只能设置为 0/90/180/270
             getter and setter rotation 默认为 0
+
             getter and setter lowLight 默认为 true
             getter and setter gamma = Array of length 32 containing Integers between 0 and 31
             gammaReset()  恢复默认 gamma
+
             loadImage(filePath, redraw=true)
+
             showLetter(character, textColour=[255,255,255], backColour=[0,0,0])
             showMessage(textString, scrollSpeed=0.1(秒), textColour=[255,255,255], backColour=[0,0,0])
             flashMessage(textString, speed=0.1(秒), textColour=[255,255,255], backColour=[0,0,0])
@@ -55,18 +60,22 @@ io.on('connection', (client) => {
     client.on('action', ({ action, x, y, color, pixels, delay }) => {
         switch (action) {
             case 'clear':
-                sensehat.led.clear()
-                console.log('清除所有点')
+                if (color == undefined) color = [0, 0, 0]
+                sensehat.led.clear(color)
                 break
             case 'flash':
                 if (color == undefined) color = [255, 255, 255]
                 sensehat.led.clear(color)
                 setTimeout(sensehat.led.clear, delay | 200)
-                console.log('闪光', color, delay | 200)
                 break
             case 'setPixel':
+                if (color == undefined) color = [255, 255, 255]
                 sensehat.led.setPixel(Number(x), Number(y), color)
                 break
+            case 'getPixel':
+                color = sensehat.led.getPixel(Number(x), Number(y))
+                client.emit('setPixel', color)
+                break
             // case 'on':
             //     sense.setPixel(Number(x), Number(y), color_blue)
             //     leds[y][x] = 1