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第一次用这个东西,我最近一直在上班,加班,没有时间去搞这些,用空闲时间去填补这些,还是小有成就的.

OLED的驱动芯片是ssd1306,这个是OLED屏幕卖家提供给我的资料.这个芯片用的是SPI的通讯方式,初始化顺序也是参考了厂家的提供的初始化指令.直接移植来过来.

void OLED_Init(void) { OLED_RST_Set(); Delay_ms(100); OLED_RST_Clr(); Delay_ms(100); OLED_RST_Set(); OLED_WR_Byte(0xAE,OLED_CMD);//Set display off OLED_WR_Byte(0x00,OLED_CMD);//set low column address OLED_WR_Byte(0x10,OLED_CMD);//set high column address OLED_WR_Byte(0x40,OLED_CMD);//set start line address Set Mapping RAM Display Start Line (0x00~0x3F) OLED_WR_Byte(0x81,OLED_CMD);//Set contrast control OLED_WR_Byte(0xCF,OLED_CMD);//Select1-256 OLED_WR_Byte(0xA4,OLED_CMD);//Disable entire display OLED_WR_Byte(0xA6,OLED_CMD);//Set normal display OLED_WR_Byte(0xAF,OLED_CMD);//Set display on OLED_WR_Byte(0x20,OLED_CMD);//Set memory addressing mode OLED_WR_Byte(0x02,OLED_CMD);//Set page addressing mode OLED_WR_Byte(0xA1,OLED_CMD);//Disable segment re-map OLED_WR_Byte(0xA8,OLED_CMD);//Set multiplex ratio OLED_WR_Byte(0x3F,OLED_CMD);//1/64 duty OLED_WR_Byte(0xC8,OLED_CMD);//Set normal mode scan OLED_WR_Byte(0xD3,OLED_CMD);//Set display offset OLED_WR_Byte(0x00,OLED_CMD);//No offset OLED_WR_Byte(0xDA,OLED_CMD);//Set COM pins hardware configuration OLED_WR_Byte(0x12,OLED_CMD);//Alternative COM pin configuration OLED_WR_Byte(0xD5,OLED_CMD);//Set display clock clock divide OLED_WR_Byte(0x80,OLED_CMD);//100 frames/s OLED_WR_Byte(0xD9,OLED_CMD);//Set pre-charge period OLED_WR_Byte(0xF1,OLED_CMD);//Set pre-charge as 15 clocks,discharge as 1 clock OLED_WR_Byte(0xDB,OLED_CMD);//Set Vcomh deselect level OLED_WR_Byte(0x40,OLED_CMD);//~0.77xVcc OLED_WR_Byte(0x8D,OLED_CMD);//Set DCDC OLED_WR_Byte(0x14,OLED_CMD);//Enable DCDC (0x10 disable) OLED_Clear(0); OLED_Set_Address(0,0); }

引脚的操作,我借鉴前人的经验,用宏进行了封装.很值得学习的一个步骤.

#define OLED_SCLK_Set() GPIO_SetBits(GPIOA,GPIO_Pin_0); #define OLED_SCLK_Clr() GPIO_ResetBits(GPIOA,GPIO_Pin_0); #define OLED_SDIN_Set() GPIO_SetBits(GPIOA,GPIO_Pin_1); #define OLED_SDIN_Clr() GPIO_ResetBits(GPIOA,GPIO_Pin_1); #define OLED_RST_Set() GPIO_SetBits(GPIOA,GPIO_Pin_4); #define OLED_RST_Clr() GPIO_ResetBits(GPIOA,GPIO_Pin_4); #define OLED_DC_Set() GPIO_SetBits(GPIOB,GPIO_Pin_0); #define OLED_DC_Clr() GPIO_ResetBits(GPIOB,GPIO_Pin_0); #define OLED_CS_Set() GPIO_SetBits(GPIOA,GPIO_Pin_15); #define OLED_CS_Clr() GPIO_ResetBits(GPIOA,GPIO_Pin_15);

由于屏幕不是标准的spi接口,所以根据数据手册,所以只能用软件实现屏幕的spi接口

//写入命令或数据 void OLED_WR_Byte(uint8_t DATA,uint8_t CMD) { uint8_t i; OLED_CS_Clr(); if(CMD) {OLED_DC_Set();} else OLED_DC_Clr(); for(i=0;i<8;i++) { OLED_SCLK_Clr(); if(DATA&0x80) {OLED_SDIN_Set();} else OLED_SDIN_Clr(); OLED_SCLK_Set(); DATA<<=1; } OLED_CS_Set(); OLED_DC_Set(); } //设置OLED行列地址 void OLED_Set_Address(uint8_t column,uint8_t page) { OLED_WR_Byte(OLED_PAGE_Address+page,OLED_CMD); OLED_WR_Byte(OLED_LINE_Address_L+column%16,OLED_CMD); OLED_WR_Byte(OLED_LINE_Address_H+column/16,OLED_CMD); } //功能描述：清屏 void OLED_Clear(uint8_t data) { uint32_t counter_x,counter_y; for(counter_y=0;counter_y<8;counter_y++) { OLED_WR_Byte(OLED_PAGE_Address+counter_y,OLED_CMD); OLED_WR_Byte(OLED_LINE_Address_L,OLED_CMD); OLED_WR_Byte(OLED_LINE_Address_H,OLED_CMD); for(counter_x=0;counter_x<128;counter_x++) OLED_WR_Byte(data,OLED_DATA); } } //在指定位置显示一个字符,包括部分字符 //x:0~127 //y:0~63 //mode:0,反白显示;1,正常显示 //size:选择字体 16/12 void OLED_ShowChar(uint8_t x,uint8_t y,uint8_t chr) { unsigned char c=0,i=0; c=chr-' ';//得到偏移后的值 if(x>Max_Column-1){x=0;y=y+2;} if(SIZE ==16) { OLED_Set_Address(x,y); for(i=0;i<8;i++) OLED_WR_Byte(F8X16[c*16+i],OLED_DATA); OLED_Set_Address(x,y+1); for(i=0;i<8;i++) OLED_WR_Byte(F8X16[c*16+i+8],OLED_DATA); } else { OLED_Set_Address(x,y+1); for(i=0;i<6;i++) OLED_WR_Byte(F6x8[c][i],OLED_DATA); } } //m^n函数 uint32_t oled_pow(uint8_t m,uint8_t n) { uint32_t result=1; while(n--)result*=m; return result; } //显示2个数字 //x,y :起点坐标 //len :数字的位数 //size:字体大小 //mode:模式 0,填充模式;1,叠加模式 //num:数值(0~4294967295); void OLED_ShowNum(uint8_t x,uint8_t y,uint32_t num,uint8_t len,uint8_t size) { uint8_t t,temp; uint8_t enshow=0; for(t=0;t120){x=0;y+=2;} j++; } }