一、SPI介绍（串行外设接口）

SPI是串行外设接口（Serial Peripheral Interface）的缩写，SPI是一种高速、全双工、同步通信的通信总线，被广泛应用在ADC、LCD等与MCU的通信过程中，特点就是快。串行外围接口(SPI)总线是由摩托罗拉公司开发的，用于在主设备和从设备之间提供全双工同步串行通信.

二、使用OLED屏显示姓名学号

提取汉字点阵

修改代码

设置文字滚动

	OLED_WR_Byte(0x2E,OLED_CMD); //关闭滚动
	OLED_WR_Byte(0x27,OLED_CMD); //水平向左或者右滚动 26/27
	OLED_WR_Byte(0x00,OLED_CMD); //虚拟字节
	OLED_WR_Byte(0x00,OLED_CMD); //起始页 0
	OLED_WR_Byte(0x07,OLED_CMD); //滚动时间间隔
	OLED_WR_Byte(0x02,OLED_CMD); //终止页 2
	OLED_WR_Byte(0x00,OLED_CMD); //虚拟字节
	OLED_WR_Byte(0xFF,OLED_CMD); //虚拟字节

连线方式

三、滚动显示

对应的相应文字的点阵十六进制表示

DB 00H 80H 00H 80H FCH 80H 04H FCH 05H 04H 49H 08H 2AH 40H 14H 40H;
DB 10H 40H 28H A0H 24H A0H 45H 10H 81H 10H 02H 08H 04H 04H 08H 02H;"欢",0

DB 00H 00H 20H 80H 13H 3CH 12H 24H 02H 24H 02H 24H F2H 24H 12H 24H;
DB 12H 24H 12H B4H 13H 28H 12H 20H 10H 20H 28H 20H 47H FEH 00H 00H;"迎",1

DB 01H 00H 01H 00H 01H 00H 7FH FCH 01H 00H 11H 10H 09H 10H 09H 20H;
DB FFH FEH 03H 80H 05H 40H 09H 20H 31H 18H C1H 06H 01H 00H 01H 00H;"来",2

DB 00H 04H FFH 84H 08H 04H 10H 24H 22H 24H 41H 24H FFH A4H 08H A4H;
DB 08H 24H 08H 24H 7FH 24H 08H 24H 08H 04H 0FH 84H F8H 14H 40H 08H;"到",3

DB 20H 50H 20H 48H 2FH FEH 20H 40H 27H FCH FCH 44H 27H FCH 24H 44H;
DB 27H FCH 24H 44H 20H 08H 2FH FEH 22H 08H 21H 08H 21H 28H 20H 10H;"博",4

DB 02H 00H 01H 00H 7FH FEH 40H 02H 88H 04H 0FH F0H 10H 20H 2CH 40H;
DB 03H 80H 1CH 70H E0H 0EH 1FH F0H 10H 10H 10H 10H 1FH F0H 10H 10H;"客",5

代码

OLED_WR_Byte(0x2E,OLED_CMD);        //关闭滚动
OLED_WR_Byte(0x26,OLED_CMD);        //水平向左或者右滚动 26/27
OLED_WR_Byte(0x00,OLED_CMD);        //虚拟字节
OLED_WR_Byte(0x00,OLED_CMD);        //起始页 0
OLED_WR_Byte(0x07,OLED_CMD);        //滚动时间间隔
OLED_WR_Byte(0x07,OLED_CMD);        //终止页 7
OLED_WR_Byte(0x00,OLED_CMD);        //虚拟字节
OLED_WR_Byte(0xFF,OLED_CMD);        //虚拟字节
OLED_WR_Byte(0x2F,OLED_CMD);        //开启滚动

OLED_WR_Byte(0x2e,OLED_CMD);        //关闭滚动
OLED_WR_Byte(0x29,OLED_CMD);        //水平垂直和水平滚动左右 29/2a
OLED_WR_Byte(0x00,OLED_CMD);        //虚拟字节
OLED_WR_Byte(0x00,OLED_CMD);        //起始页 0
OLED_WR_Byte(0x07,OLED_CMD);        //滚动时间间隔
OLED_WR_Byte(0x07,OLED_CMD);        //终止页 1
OLED_WR_Byte(0x01,OLED_CMD);        //垂直滚动偏移量
OLED_WR_Byte(0x2F,OLED_CMD);        //开启滚动