单片机解密OLED屏是一种小巧的显示器件，特别是I2C接口的OLED 屏更能节省I/O口资源。本次使用的是一款0.91'的单色OLED屏，它比常规的OLED屏要长且窄，故更适于显示信息和参数，也更适于用在便携装置上。
1. OLED屏显示
1）OLED屏与NV32F100的连接关系如下：
SCL --- PE1
SDA --- PE0
2）单片机解密为进行显示定义引脚输出高低电平的语句为：
#defineOLED_SCLK_Clr() GPIO_PinClear(GPIO_PTE1);
#defineOLED_SCLK_Set() GPIO_PinSet(GPIO_PTE1);
#defineOLED_SDIN_Clr() GPIO_PinClear(GPIO_PTE0);
#defineOLED_SDIN_Set() GPIO_PinSet(GPIO_PTE0);
3）单片机解密OLED屏初始化函数为：
- void OLED_Init(void)
- {
- Delay_1ms(800);
- OLED_WR_Byte(0xAE,OLED_CMD);//--display off
- OLED_WR_Byte(0x40,OLED_CMD);//--set start line address
- OLED_WR_Byte(0xB0,OLED_CMD);//--set page address
-
- OLED_WR_Byte(0xC8,OLED_CMD);//Com scan direction
-
- OLED_WR_Byte(0x81,OLED_CMD); // contract control
- OLED_WR_Byte(0xFF,OLED_CMD);//--128
-
- OLED_WR_Byte(0xA1,OLED_CMD);//set segment remap
-
- OLED_WR_Byte(0xA6,OLED_CMD);//--normal / reverse
- OLED_WR_Byte(0xA8,OLED_CMD);//--set multiplex ratio(1 to 64)
- OLED_WR_Byte(0x1F,OLED_CMD);//--1/32 duty
-
- OLED_WR_Byte(0xD3,OLED_CMD);//-set display offset
- OLED_WR_Byte(0x00,OLED_CMD);
-
- OLED_WR_Byte(0xD5,OLED_CMD);//set osc division
- OLED_WR_Byte(0xF0,OLED_CMD);
-
- OLED_WR_Byte(0xD9,OLED_CMD);//Set Pre-Charge Period
- OLED_WR_Byte(0x22,OLED_CMD);
-
- OLED_WR_Byte(0xDA,OLED_CMD);//set com pin configuartion
- OLED_WR_Byte(0x02,OLED_CMD);
-
- OLED_WR_Byte(0xDB,OLED_CMD);//set Vcomh
- OLED_WR_Byte(0x49,OLED_CMD);//30
-
- OLED_WR_Byte(0x8D,OLED_CMD);//set charge pump enable
- OLED_WR_Byte(0x14,OLED_CMD);
-
- OLED_WR_Byte(0xAF,OLED_CMD);//--turn on oled panel
- OLED_Clear();
- }
芯片解密
