Files

oled.c
#include "oled.h" //#include "stdlib.h" #include "oledfont.h" //#include "delay.h" //OLED的显存 //存放格式如下. //[0]0 1 2 3 ... 127 //[1]0 1 2 3 ... 127 //[2]0 1 2 3 ... 127 //[3]0 1 2 3 ... 127 //[4]0 1 2 3 ... 127 //[5]0 1 2 3 ... 127 //[6]0 1 2 3 ... 127 //[7]0 1 2 3 ... 127 void delay_ms(unsigned int ms) { unsigned int a; while(ms) { a=1800; while(a--); ms--; } return; } /********************************************** //IIC Start **********************************************/ void IIC_Start() { OLED_SCLK_Set(); OLED_SDIN_Set(); OLED_SDIN_Clr(); OLED_SCLK_Clr(); } /********************************************** //IIC Stop **********************************************/ void IIC_Stop() { OLED_SCLK_Set() ; // OLED_SCLK_Clr(); OLED_SDIN_Clr(); OLED_SDIN_Set(); } void IIC_Wait_Ack() { //GPIOB->CRH &= 0XFFF0FFFF; //设置PB12为上拉输入模式 //GPIOB->CRH |= 0x00080000; // OLED_SDA = 1; // delay_us(1); //OLED_SCL = 1; //delay_us(50000); /* while(1) { if(!OLED_SDA) //判断是否接收到OLED 应答信号 { //GPIOB->CRH &= 0XFFF0FFFF; //设置PB12为通用推免输出模式 //GPIOB->CRH |= 0x00030000; return; } } */ OLED_SCLK_Set() ; OLED_SCLK_Clr(); } /********************************************** // IIC Write byte **********************************************/ void Write_IIC_Byte(unsigned char IIC_Byte) { unsigned char i; unsigned char m,da; da=IIC_Byte; OLED_SCLK_Clr(); for(i=0;i<8;i++) { m=da; // OLED_SCLK_Clr(); m=m&0x80; if(m==0x80) {OLED_SDIN_Set();} else OLED_SDIN_Clr(); da=da<<1; OLED_SCLK_Set(); OLED_SCLK_Clr(); } } /********************************************** // IIC Write Command **********************************************/ void Write_IIC_Command(unsigned char IIC_Command) { IIC_Start(); Write_IIC_Byte(0x78); //Slave address,SA0=0 IIC_Wait_Ack(); Write_IIC_Byte(0x00); //write command IIC_Wait_Ack(); Write_IIC_Byte(IIC_Command); IIC_Wait_Ack(); IIC_Stop(); } /********************************************** // IIC Write Data **********************************************/ void Write_IIC_Data(unsigned char IIC_Data) { IIC_Start(); Write_IIC_Byte(0x78); //D/C#=0; R/W#=0 IIC_Wait_Ack(); Write_IIC_Byte(0x40); //write data IIC_Wait_Ack(); Write_IIC_Byte(IIC_Data); IIC_Wait_Ack(); IIC_Stop(); } void OLED_WR_Byte(unsigned dat,unsigned cmd) { if(cmd) { Write_IIC_Data(dat); } else { Write_IIC_Command(dat); } } /******************************************** // fill_Picture ********************************************/ void fill_picture(unsigned char fill_Data) { unsigned char m,n; for(m=0;m<8;m++) { OLED_WR_Byte(0xb0+m,0); //page0-page1 OLED_WR_Byte(0x00,0); //low column start address OLED_WR_Byte(0x10,0); //high column start address for(n=0;n<128;n++) { OLED_WR_Byte(fill_Data,1); } } } /***********************Delay****************************************/ void Delay_50ms(unsigned int Del_50ms) { unsigned int m; for(;Del_50ms>0;Del_50ms--) for(m=6245;m>0;m--); } void Delay_1ms(unsigned int Del_1ms) { unsigned char j; while(Del_1ms--) { for(j=0;j<123;j++); } } //坐标设置 void OLED_Set_Pos(unsigned char x, unsigned char y) { OLED_WR_Byte(0xb0+y,OLED_CMD); OLED_WR_Byte(((x&0xf0)>>4)|0x10,OLED_CMD); OLED_WR_Byte((x&0x0f),OLED_CMD); } //开启OLED显示 void OLED_Display_On(void) { OLED_WR_Byte(0X8D,OLED_CMD); //SET DCDC命令 OLED_WR_Byte(0X14,OLED_CMD); //DCDC ON OLED_WR_Byte(0XAF,OLED_CMD); //DISPLAY ON } //关闭OLED显示 void OLED_Display_Off(void) { OLED_WR_Byte(0X8D,OLED_CMD); //SET DCDC命令 OLED_WR_Byte(0X10,OLED_CMD); //DCDC OFF OLED_WR_Byte(0XAE,OLED_CMD); //DISPLAY OFF } //清屏函数,清完屏,整个屏幕是黑色的!和没点亮一样!!! void OLED_Clear(void) { u8 i,n; for(i=0;i<8;i++) { OLED_WR_Byte (0xb0+i,OLED_CMD); //设置页地址(0~7) OLED_WR_Byte (0x00,OLED_CMD); //设置显示位置—列低地址 OLED_WR_Byte (0x10,OLED_CMD); //设置显示位置—列高地址 for(n=0;n<128;n++)OLED_WR_Byte(0,OLED_DATA); } //更新显示 } void OLED_On(void) { u8 i,n; for(i=0;i<8;i++) { OLED_WR_Byte (0xb0+i,OLED_CMD); //设置页地址(0~7) OLED_WR_Byte (0x00,OLED_CMD); //设置显示位置—列低地址 OLED_WR_Byte (0x10,OLED_CMD); //设置显示位置—列高地址 for(n=0;n<128;n++)OLED_WR_Byte(1,OLED_DATA); } //更新显示 } //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(u8 x,u8 y,u8 chr,u8 Char_Size) { 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(Char_Size ==16) { OLED_Set_Pos(x,y); for(i=0;i<8;i++) OLED_WR_Byte(F8X16[c*16+i],OLED_DATA); OLED_Set_Pos(x,y+1); for(i=0;i<8;i++) OLED_WR_Byte(F8X16[c*16+i+8],OLED_DATA); } else { OLED_Set_Pos(x,y); for(i=0;i<6;i++) OLED_WR_Byte(F68[c*8+i],OLED_DATA); } } //m^n函数 u32 oled_pow(u8 m,u8 n) { u32 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(u8 x,u8 y,u32 num,u8 len,u8 size2) { u8 t,temp; u8 enshow=0; for(t=0;t<len;t++) { temp=(num/oled_pow(10,len-t-1))%10; if(enshow==0&&t<(len-1)) { if(temp==0) { OLED_ShowChar(x+(size2/2)*t,y,' ',size2); continue; }else enshow=1; } OLED_ShowChar(x+(size2/2)*t,y,temp+'0',size2); } } //显示一个字符号串 void OLED_ShowString(u8 x,u8 y,u8 *chr,u8 Char_Size) { unsigned char j=0; while (chr[j]!='\0') { OLED_ShowChar(x,y,chr[j],Char_Size); x+=8; if(x>120){x=0;y+=2;} j++; } } void OLED_ShowCHinese(u8 x,u8 y,u8 no) { u8 t,adder=0; OLED_Set_Pos(x,y); for(t=0;t<16;t++) { OLED_WR_Byte(Hzk[2*no][t],OLED_DATA); adder+=1; } OLED_Set_Pos(x,y+1); for(t=0;t<16;t++) { OLED_WR_Byte(Hzk[2*no+1][t],OLED_DATA); adder+=1; } } void OLED_DrawBMP(unsigned char x0, unsigned char y0,unsigned char x1, unsigned char y1,unsigned char *BMP) { unsigned int j=0; unsigned char x,y; if(y1%8==0) y=y1/8; else y=y1/8+1; for(y=y0;y<y1;y++) { OLED_Set_Pos(x0,y); for(x=x0;x<x1;x++) { OLED_WR_Byte(BMP[j++],OLED_DATA); } } } //初始化SSD1306 void OLED_Init(void) { int i=0; const unsigned char oled_cmd[]={ 0x0ae, /* display off, sleep mode */ 0x0d5, 0x080, /* clock divide ratio (0x00=1) and oscillator frequency (0x8) */ 0x0a8, 0x01f, /* Feb 23, 2013: 128x32 OLED: 0x01f, 128x32 OLED 0x03f */ 0x0d3, 0x000, /* */ 0x040, /* start line */ 0x08d, 0x014, /* [2] charge pump setting (p62): 0x014 enable, 0x010 disable */ 0x020, 0x002, /* com pin HW config, sequential com pin config (bit 4), disable left/right remap (bit 5), Feb 23, 2013: 128x32 OLED: 0x002, 128x32 OLED 0x012 */ 0xff, 0x0a1, /* segment remap a0/a1*/ 0x0c8, /* c0: scan dir normal, c8: reverse */ 0x0da, 0x002, /* com pin HW config, sequential com pin config (bit 4), disable left/right remap (bit 5) */ 0x081, 0x0cf, /* [2] set contrast control */ 0x0d9, 0x0f1, /* [2] pre-charge period 0x022/f1*/ 0x0db, 0x030, /* vcomh deselect level */ 0x02e, /* 2012-05-27: Deactivate scroll */ 0x0a4, /* output ram to display */ 0x0a6, /* none inverted normal display mode */ 0x8d,0x14, 0x0af, /* display on */ }; for(i=0;i<29;i++) OLED_WR_Byte(oled_cmd[i],OLED_CMD); /*OLED_WR_Byte(0xAE,OLED_CMD);//--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 OLED_WR_Byte(0xB0,OLED_CMD);//--set page address 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(0x3F,OLED_CMD);//--1/32 duty OLED_WR_Byte(0xC8,OLED_CMD);//Com scan direction 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(0x80,OLED_CMD);// OLED_WR_Byte(0xD8,OLED_CMD);//set area color mode off OLED_WR_Byte(0x05,OLED_CMD);// OLED_WR_Byte(0xD9,OLED_CMD);//Set Pre-Charge Period OLED_WR_Byte(0xF1,OLED_CMD);// OLED_WR_Byte(0xDA,OLED_CMD);//set com pin configuartion OLED_WR_Byte(0x12,OLED_CMD);// OLED_WR_Byte(0xDB,OLED_CMD);//set Vcomh OLED_WR_Byte(0x30,OLED_CMD);// 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*/ }
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