优化OLED 显示闪烁 主要是清屏之后 多了一次发送数据，改为清屏只清除内容，等内容更新后再发送数据

beken_rtt_sdk_release-SDK_3.0.76/applications/drv_oled.c

@@ -662,8 +662,8 @@ void OLED_DisplayTurn(u8 i)
 //<2F><>ʱ
 void IIC_delay(void)
 {
-	u8 t=3;
-	while(t--);
+	//u8 t=2;
+	//while(t--);
 }
 
 //<2F><>ʼ<EFBFBD>ź<EFBFBD>
@@ -844,7 +844,7 @@ void OLED_Clear(void)
 			 OLED_GRAM[n][i]=0x0;//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 			}
   }
-	OLED_Refresh();//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ
+	//OLED_Refresh();//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ
 }
 
 //<2F><><EFBFBD><EFBFBD>