把四脚OLED程序改成七脚OLED程序

好的，将四脚OLED程序改成七脚OLED程序需要以下步骤：

1. 在Arduino IDE中打开四脚OLED程序，将其中的定义OLED的代码段复制到新的Arduino文件中。

2. 在新的Arduino文件中，添加以下代码段来定义7脚OLED屏幕的引脚：

#define OLED_SDA  2 //定义OLED SDA引脚
#define OLED_SCL  3 //定义OLED SCL引脚
#define OLED_RST  4 //定义OLED RST引脚
#define OLED_DC   5 //定义OLED DC引脚
#define OLED_CS   6 //定义OLED CS引脚
#define OLED_EN   7 //定义OLED EN引脚

3. 找到OLED初始化函数，并修改其中的引脚定义，如下所示：

void OLED_Init(void)
{
	...
	//原来的代码：
	//Wire.beginTransmission(OLED_ADDR);
	//Wire.write(0x00);
	//Wire.write(0xAE);
	//Wire.write(0xD5);
	//Wire.write(0x80);
	//Wire.write(0xA8);
	//Wire.write(0x3F);
	//Wire.write(0xD3);
	//Wire.write(0x00);
	//Wire.write(0x40);
	//Wire.write(0x8D);
	//Wire.write(0x14);
	//Wire.write(0x20);
	//Wire.write(0x00);
	//Wire.write(0xA1);
	//Wire.write(0xC8);
	//Wire.write(0xDA);
	//Wire.write(0x12);
	//Wire.write(0x81);
	//Wire.write(0xCF);
	//Wire.write(0xD9);
	//Wire.write(0xF1);
	//Wire.write(0xDB);
	//Wire.write(0x40);
	//Wire.write(0xA4);
	//Wire.write(0xA6);
	//Wire.write(0xAF);
	//Wire.endTransmission();

	//新的代码：
	Wire.beginTransmission(OLED_ADDR);
	Wire.write(0x00);
	Wire.write(0xAE);
	Wire.write(0xD5);
	Wire.write(0x80);
	Wire.write(0xA8);
	Wire.write(0x3F);
	Wire.write(0xD3);
	Wire.write(0x00);
	Wire.write(0x40);
	Wire.write(0x8D);
	Wire.write(0x14);
	Wire.write(0x20);
	Wire.write(0x00);
	Wire.write(0xA1);
	Wire.write(0xC8);
	Wire.write(0xDA);
	Wire.write(0x12);
	Wire.write(0x81);
	Wire.write(0xCF);
	Wire.write(0xD9);
	Wire.write(0xF1);
	Wire.write(0xDB);
	Wire.write(0x40);
	Wire.write(0xA4);
	Wire.write(0xA6);
	Wire.write(0xAF);
	Wire.endTransmission();
}

在新代码中，我们将OLED的引脚连接到了7脚，这样程序就能够正常地控制7脚OLED屏幕了。

4. 最后，将新的代码上传到Arduino板子中，连接7脚OLED屏幕和Arduino，测试程序是否正常工作。

这样就完成了将四脚OLED程序改成七脚OLED程序的过程。