diff --git a/Adafruit_GFX.cpp b/Adafruit_GFX.cpp
index 0f76c8f7..16d9d138 100755
--- a/Adafruit_GFX.cpp
+++ b/Adafruit_GFX.cpp
@@ -290,6 +290,41 @@ void Adafruit_GFX::drawCircleHelper( int16_t x0, int16_t y0,
     }
 }
 
+void Adafruit_GFX::drawOval(int16_t x0, int16_t y0, int16_t r,
+        uint16_t color) {
+    int16_t f = 1 - r;
+    int16_t ddF_x = 1;
+    int16_t ddF_y = -2 * r;
+    int16_t x = 0;
+    int16_t y = r;
+
+    startWrite();
+    writePixel(x0  , y0+r, color);
+    writePixel(x0  , y0-r, color);
+    writePixel(x0+2*r, y0  , color);
+    writePixel(x0-2*r, y0  , color);
+
+    while (x<y) {
+        if (f >= 0) {
+            y--;
+            ddF_y += 2;
+            f += ddF_y;
+        }
+        x++;
+        ddF_x += 2;
+        f += ddF_x;
+
+        writePixel(x0 + 2*x, y0 + y, color);
+        writePixel(x0 - 2*x, y0 + y, color);
+        writePixel(x0 + 2*x, y0 - y, color);
+        writePixel(x0 - 2*x, y0 - y, color);
+        writePixel(x0 + 2*y, y0 + x, color);
+        writePixel(x0 - 2*y, y0 + x, color);
+        writePixel(x0 + 2*y, y0 - x, color);
+        writePixel(x0 - 2*y, y0 - x, color);
+    }
+    endWrite();
+}
 void Adafruit_GFX::fillCircle(int16_t x0, int16_t y0, int16_t r,
         uint16_t color) {
     startWrite();
@@ -504,6 +539,31 @@ void Adafruit_GFX::fillTriangle(int16_t x0, int16_t y0,
 
 // Draw a PROGMEM-resident 1-bit image at the specified (x,y) position,
 // using the specified foreground color (unset bits are transparent).
+
+
+/**************************************************************************/
+/*!
+   @brief    画五角星
+    @param    五角星重心x坐标
+    @param    五角星重心y坐标
+    @param    l   五角星重心到顶点长度
+    @param    color 16-bit 5-6-5 Color to draw with
+*/
+/**************************************************************************/
+void Adafruit_GFX::drawPentengle(int16_t x0, int16_t y0, int16_t l, uint16_t color) {
+	int16_t x1,y1,x2,y2,x3,y3,x4,y4,x5,y5;
+	x1=x0;y1=y0-l;
+	x2=int16_t(x0+0.95*l);y2=int16_t(y0-0.3*l);
+	x3=int16_t(x0-0.95*l);y3=int16_t(y0-0.3*l);
+	x4=int16_t(x0+0.59*l);y4=int16_t(y0+0.8*l);
+	x5=int16_t(x0-0.59*l);y5=int16_t(y0+0.8*l);
+	drawLine(x1, y1, x4, y4, color);
+	drawLine(x1, y1, x5, y5, color);
+	drawLine(x3, y3, x4, y4, color);
+	drawLine(x2, y2, x5, y5, color);
+	drawLine(x2, y2, x3, y3, color);
+}
+
 void Adafruit_GFX::drawBitmap(int16_t x, int16_t y,
   const uint8_t bitmap[], int16_t w, int16_t h, uint16_t color) {
 
diff --git a/Adafruit_GFX.h b/Adafruit_GFX.h
index 73e6b1d1..659db193 100755
--- a/Adafruit_GFX.h
+++ b/Adafruit_GFX.h
@@ -52,6 +52,9 @@ class Adafruit_GFX : public Print {
     drawCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color),
     drawCircleHelper(int16_t x0, int16_t y0, int16_t r, uint8_t cornername,
       uint16_t color),
+
+    drawOval(int16_t x0, int16_t y0, int16_t r, uint16_t color),
+		
     fillCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color),
     fillCircleHelper(int16_t x0, int16_t y0, int16_t r, uint8_t cornername,
       int16_t delta, uint16_t color),
@@ -65,6 +68,9 @@ class Adafruit_GFX : public Print {
       int16_t radius, uint16_t color),
     fillRoundRect(int16_t x0, int16_t y0, int16_t w, int16_t h,
       int16_t radius, uint16_t color),
+	  
+	void drawPentengle(int16_t x0, int16_t y0, int16_t l, uint16_t color);//五角星
+	
     drawBitmap(int16_t x, int16_t y, const uint8_t bitmap[],
       int16_t w, int16_t h, uint16_t color),
     drawBitmap(int16_t x, int16_t y, const uint8_t bitmap[],