兩種OLED屏幕都不亮
主函數里的三個LED燈都亮了。
- #include "oled.h"
- #include "stdlib.h"
- #include "oledfont.h"
- #include "delay.h"
- u8 OLED_GRAM[144][8];
- //反顯函數
- void OLED_ColorTurn(u8 i)
- {
- if(i==0)
- {
- OLED_WR_Byte(0xA6,OLED_CMD);//正常顯示
- }
- if(i==1)
- {
- OLED_WR_Byte(0xA7,OLED_CMD);//反色顯示
- }
- }
- //屏幕旋轉180度
- void OLED_DisplayTurn(u8 i)
- {
- if(i==0)
- {
- OLED_WR_Byte(0xC8,OLED_CMD);//正常顯示
- OLED_WR_Byte(0xA1,OLED_CMD);
- }
- if(i==1)
- {
- OLED_WR_Byte(0xC0,OLED_CMD);//反轉顯示
- OLED_WR_Byte(0xA0,OLED_CMD);
- }
- }
- void OLED_WR_Byte(u8 dat,u8 cmd)
- {
- u8 i;
- if(cmd)
- OLED_DC_Set();
- else
- OLED_DC_Clr();
- OLED_CS_Clr();
- for(i=0;i<8;i++)
- {
- OLED_SCL_Clr();
- if(dat&0x80)
- OLED_SDA_Set();
- else
- OLED_SDA_Clr();
- OLED_SCL_Set();
- dat<<=1;
- }
- OLED_CS_Set();
- OLED_DC_Set();
- }
- //開啟OLED顯示
- void OLED_DisPlay_On(void)
- {
- OLED_WR_Byte(0x8D,OLED_CMD);//電荷泵使能
- OLED_WR_Byte(0x14,OLED_CMD);//開啟電荷泵
- OLED_WR_Byte(0xAF,OLED_CMD);//點亮屏幕
- }
- //關閉OLED顯示
- void OLED_DisPlay_Off(void)
- {
- OLED_WR_Byte(0x8D,OLED_CMD);//電荷泵使能
- OLED_WR_Byte(0x10,OLED_CMD);//關閉電荷泵
- OLED_WR_Byte(0xAE,OLED_CMD);//關閉屏幕
- }
- //更新顯存到OLED
- void OLED_Refresh(void)
- {
- u8 i,n;
- for(i=0;i<8;i++)
- {
- OLED_WR_Byte(0xb0+i,OLED_CMD); //設置行起始地址
- OLED_WR_Byte(0x00,OLED_CMD); //設置低列起始地址
- OLED_WR_Byte(0x10,OLED_CMD); //設置高列起始地址
- for(n=0;n<128;n++)
- OLED_WR_Byte(OLED_GRAM[n][i],OLED_DATA);
- }
- }
- //清屏函數
- void OLED_Clear(void)
- {
- u8 i,n;
- for(i=0;i<8;i++)
- {
- for(n=0;n<128;n++)
- {
- OLED_GRAM[n][i]=0;//清除所有數據
- }
- }
- OLED_Refresh();//更新顯示
- }
- //畫點
- //x:0~127
- //y:0~63
- //t:1 填充 0,清空
- void OLED_DrawPoint(u8 x,u8 y,u8 t)
- {
- u8 i,m,n;
- i=y/8;
- m=y%8;
- n=1<<m;
- if(t){OLED_GRAM[x][i]|=n;}
- else
- {
- OLED_GRAM[x][i]=~OLED_GRAM[x][i];
- OLED_GRAM[x][i]|=n;
- OLED_GRAM[x][i]=~OLED_GRAM[x][i];
- }
- }
- //畫線
- //x1,y1:起點坐標
- //x2,y2:結束坐標
- void OLED_DrawLine(u8 x1,u8 y1,u8 x2,u8 y2,u8 mode)
- {
- u16 t;
- int xerr=0,yerr=0,delta_x,delta_y,distance;
- int incx,incy,uRow,uCol;
- delta_x=x2-x1; //計算坐標增量
- delta_y=y2-y1;
- uRow=x1;//畫線起點坐標
- uCol=y1;
- if(delta_x>0)incx=1; //設置單步方向
- else if (delta_x==0)incx=0;//垂直線
- else {incx=-1;delta_x=-delta_x;}
- if(delta_y>0)incy=1;
- else if (delta_y==0)incy=0;//水平線
- else {incy=-1;delta_y=-delta_x;}
- if(delta_x>delta_y)distance=delta_x; //選取基本增量坐標軸
- else distance=delta_y;
- for(t=0;t<distance+1;t++)
- {
- OLED_DrawPoint(uRow,uCol,mode);//畫點
- xerr+=delta_x;
- yerr+=delta_y;
- if(xerr>distance)
- {
- xerr-=distance;
- uRow+=incx;
- }
- if(yerr>distance)
- {
- yerr-=distance;
- uCol+=incy;
- }
- }
- }
- //x,y:圓心坐標
- //r:圓的半徑
- void OLED_DrawCircle(u8 x,u8 y,u8 r)
- {
- int a, b,num;
- a = 0;
- b = r;
- while(2 * b * b >= r * r)
- {
- OLED_DrawPoint(x + a, y - b,1);
- OLED_DrawPoint(x - a, y - b,1);
- OLED_DrawPoint(x - a, y + b,1);
- OLED_DrawPoint(x + a, y + b,1);
-
- OLED_DrawPoint(x + b, y + a,1);
- OLED_DrawPoint(x + b, y - a,1);
- OLED_DrawPoint(x - b, y - a,1);
- OLED_DrawPoint(x - b, y + a,1);
-
- a++;
- num = (a * a + b * b) - r*r;//計算畫的點離圓心的距離
- if(num > 0)
- {
- b--;
- a--;
- }
- }
- }
- //在指定位置顯示一個字符,包括部分字符
- //x:0~127
- //y:0~63
- //size1:選擇字體 6x8/6x12/8x16/12x24
- //mode:0,反色顯示;1,正常顯示
- void OLED_ShowChar(u8 x,u8 y,u8 chr,u8 size1,u8 mode)
- {
- u8 i,m,temp,size2,chr1;
- u8 x0=x,y0=y;
- if(size1==8)size2=6;
- else size2=(size1/8+((size1%8)?1:0))*(size1/2); //得到字體一個字符對應點陣集所占的字節數
- chr1=chr-' '; //計算偏移后的值
- for(i=0;i<size2;i++)
- {
- if(size1==8)
- {temp=asc2_0806[chr1][i];} //調用0806字體
- else if(size1==12)
- {temp=asc2_1206[chr1][i];} //調用1206字體
- else if(size1==16)
- {temp=asc2_1608[chr1][i];} //調用1608字體
- else if(size1==24)
- {temp=asc2_2412[chr1][i];} //調用2412字體
- else return;
- for(m=0;m<8;m++)
- {
- if(temp&0x01)OLED_DrawPoint(x,y,mode);
- else OLED_DrawPoint(x,y,!mode);
- temp>>=1;
- y++;
- }
- x++;
- if((size1!=8)&&((x-x0)==size1/2))
- {x=x0;y0=y0+8;}
- y=y0;
- }
- }
- //顯示字符串
- //x,y:起點坐標
- //size1:字體大小
- //*chr:字符串起始地址
- //mode:0,反色顯示;1,正常顯示
- void OLED_ShowString(u8 x,u8 y,u8 *chr,u8 size1,u8 mode)
- {
- while((*chr>=' ')&&(*chr<='~'))//判斷是不是非法字符!
- {
- OLED_ShowChar(x,y,*chr,size1,mode);
- if(size1==8)x+=6;
- else x+=size1/2;
- chr++;
- }
- }
- //m^n
- u32 OLED_Pow(u8 m,u8 n)
- {
- u32 result=1;
- while(n--)
- {
- result*=m;
- }
- return result;
- }
- //顯示數字
- //x,y :起點坐標
- //num :要顯示的數字
- //len :數字的位數
- //size:字體大小
- //mode:0,反色顯示;1,正常顯示
- void OLED_ShowNum(u8 x,u8 y,u32 num,u8 len,u8 size1,u8 mode)
- {
- u8 t,temp,m=0;
- if(size1==8)m=2;
- for(t=0;t<len;t++)
- {
- temp=(num/OLED_Pow(10,len-t-1))%10;
- if(temp==0)
- {
- OLED_ShowChar(x+(size1/2+m)*t,y,'0',size1,mode);
- }
- else
- {
- OLED_ShowChar(x+(size1/2+m)*t,y,temp+'0',size1,mode);
- }
- }
- }
- //顯示漢字
- //x,y:起點坐標
- //num:漢字對應的序號
- //mode:0,反色顯示;1,正常顯示
- void OLED_ShowChinese(u8 x,u8 y,u8 num,u8 size1,u8 mode)
- {
- u8 m,temp;
- u8 x0=x,y0=y;
- u16 i,size3=(size1/8+((size1%8)?1:0))*size1; //得到字體一個字符對應點陣集所占的字節數
- for(i=0;i<size3;i++)
- {
- if(size1==16)
- {temp=Hzk1[num][i];}//調用16*16字體
- else if(size1==24)
- {temp=Hzk2[num][i];}//調用24*24字體
- else if(size1==32)
- {temp=Hzk3[num][i];}//調用32*32字體
- else if(size1==64)
- {temp=Hzk4[num][i];}//調用64*64字體
- else return;
- for(m=0;m<8;m++)
- {
- if(temp&0x01)OLED_DrawPoint(x,y,mode);
- else OLED_DrawPoint(x,y,!mode);
- temp>>=1;
- y++;
- }
- x++;
- if((x-x0)==size1)
- {x=x0;y0=y0+8;}
- y=y0;
- }
- }
- //num 顯示漢字的個數
- //space 每一遍顯示的間隔
- //mode:0,反色顯示;1,正常顯示
- void OLED_ScrollDisplay(u8 num,u8 space,u8 mode)
- {
- u8 i,n,t=0,m=0,r;
- while(1)
- {
- if(m==0)
- {
- OLED_ShowChinese(128,24,t,16,mode); //寫入一個漢字保存在OLED_GRAM[][]數組中
- t++;
- }
- if(t==num)
- {
- for(r=0;r<16*space;r++) //顯示間隔
- {
- for(i=1;i<144;i++)
- {
- for(n=0;n<8;n++)
- {
- OLED_GRAM[i-1][n]=OLED_GRAM[i][n];
- }
- }
- OLED_Refresh();
- }
- t=0;
- }
- m++;
- if(m==16){m=0;}
- for(i=1;i<144;i++) //實現左移
- {
- for(n=0;n<8;n++)
- {
- OLED_GRAM[i-1][n]=OLED_GRAM[i][n];
- }
- }
- OLED_Refresh();
- }
- }
- //x,y:起點坐標
- //sizex,sizey,圖片長寬
- //BMP[]:要寫入的圖片數組
- //mode:0,反色顯示;1,正常顯示
- void OLED_ShowPicture(u8 x,u8 y,u8 sizex,u8 sizey,u8 BMP[],u8 mode)
- {
- u16 j=0;
- u8 i,n,temp,m;
- u8 x0=x,y0=y;
- sizey=sizey/8+((sizey%8)?1:0);
- for(n=0;n<sizey;n++)
- {
- for(i=0;i<sizex;i++)
- {
- temp=BMP[j];
- j++;
- for(m=0;m<8;m++)
- {
- if(temp&0x01)OLED_DrawPoint(x,y,mode);
- else OLED_DrawPoint(x,y,!mode);
- temp>>=1;
- y++;
- }
- x++;
- if((x-x0)==sizex)
- {
- x=x0;
- y0=y0+8;
- }
- y=y0;
- }
- }
- }
- //OLED的初始化
- void OLED_Init(void)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_AFIO, ENABLE); //使能A端口時鐘
- GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable, ENABLE);
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_15;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽輸出
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//速度50MHz
- GPIO_Init(GPIOA, &GPIO_InitStructure); //初始化GPIOA
- GPIO_SetBits(GPIOA,GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_15);
-
- OLED_RES_Clr();
- delay_ms(200);
- OLED_RES_Set();
-
- OLED_WR_Byte(0xAE,OLED_CMD);//--turn off oled panel
- 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 register
- OLED_WR_Byte(0xCF,OLED_CMD);// Set SEG Output Current Brightness
- OLED_WR_Byte(0xA1,OLED_CMD);//--Set SEG/Column Mapping 0xa0左右反置 0xa1正常
- OLED_WR_Byte(0xC8,OLED_CMD);//Set COM/Row Scan Direction 0xc0上下反置 0xc8正常
- OLED_WR_Byte(0xA6,OLED_CMD);//--set normal display
- OLED_WR_Byte(0xA8,OLED_CMD);//--set multiplex ratio(1 to 64)
- OLED_WR_Byte(0x3f,OLED_CMD);//--1/64 duty
- OLED_WR_Byte(0xD3,OLED_CMD);//-set display offset Shift Mapping RAM Counter (0x00~0x3F)
- OLED_WR_Byte(0x00,OLED_CMD);//-not offset
- OLED_WR_Byte(0xd5,OLED_CMD);//--set display clock divide ratio/oscillator frequency
- OLED_WR_Byte(0x80,OLED_CMD);//--set divide ratio, Set Clock as 100 Frames/Sec
- 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(0xDA,OLED_CMD);//--set com pins hardware configuration
- OLED_WR_Byte(0x12,OLED_CMD);
- OLED_WR_Byte(0xDB,OLED_CMD);//--set vcomh
- OLED_WR_Byte(0x40,OLED_CMD);//Set VCOM Deselect Level
- OLED_WR_Byte(0x20,OLED_CMD);//-Set Page Addressing Mode (0x00/0x01/0x02)
- OLED_WR_Byte(0x02,OLED_CMD);//
- OLED_WR_Byte(0x8D,OLED_CMD);//--set Charge Pump enable/disable
- OLED_WR_Byte(0x14,OLED_CMD);//--set(0x10) disable
- OLED_WR_Byte(0xA4,OLED_CMD);// Disable Entire Display On (0xa4/0xa5)
- OLED_WR_Byte(0xA6,OLED_CMD);// Disable Inverse Display On (0xa6/a7)
- OLED_Clear();
- OLED_WR_Byte(0xAF,OLED_CMD);
- }
復制代碼- #ifndef __OLED_H
- #define __OLED_H
- #include "sys.h"
- #include "stdlib.h"
- //-----------------OLED端口定義----------------
- #define OLED_SCL_Clr() GPIO_ResetBits(GPIOA,GPIO_Pin_1)//SCL
- #define OLED_SCL_Set() GPIO_SetBits(GPIOA,GPIO_Pin_1)
- #define OLED_SDA_Clr() GPIO_ResetBits(GPIOA,GPIO_Pin_2)//SDA
- #define OLED_SDA_Set() GPIO_SetBits(GPIOA,GPIO_Pin_2)
- #define OLED_RES_Clr() GPIO_ResetBits(GPIOA,GPIO_Pin_3)//RES
- #define OLED_RES_Set() GPIO_SetBits(GPIOA,GPIO_Pin_3)
- #define OLED_DC_Clr() GPIO_ResetBits(GPIOA,GPIO_Pin_4)//DC
- #define OLED_DC_Set() GPIO_SetBits(GPIOA,GPIO_Pin_4)
-
- #define OLED_CS_Clr() GPIO_ResetBits(GPIOA,GPIO_Pin_5)//CS
- #define OLED_CS_Set() GPIO_SetBits(GPIOA,GPIO_Pin_5)
- #define OLED_CMD 0 //寫命令
- #define OLED_DATA 1 //寫數據
- void OLED_ClearPoint(u8 x,u8 y);
- void OLED_ColorTurn(u8 i);
- void OLED_DisplayTurn(u8 i);
- void OLED_WR_Byte(u8 dat,u8 mode);
- void OLED_DisPlay_On(void);
- void OLED_DisPlay_Off(void);
- void OLED_Refresh(void);
- void OLED_Clear(void);
- void OLED_DrawPoint(u8 x,u8 y,u8 t);
- void OLED_DrawLine(u8 x1,u8 y1,u8 x2,u8 y2,u8 mode);
- void OLED_DrawCircle(u8 x,u8 y,u8 r);
- void OLED_ShowChar(u8 x,u8 y,u8 chr,u8 size1,u8 mode);
- void OLED_ShowChar6x8(u8 x,u8 y,u8 chr,u8 mode);
- void OLED_ShowString(u8 x,u8 y,u8 *chr,u8 size1,u8 mode);
- void OLED_ShowNum(u8 x,u8 y,u32 num,u8 len,u8 size1,u8 mode);
- void OLED_ShowChinese(u8 x,u8 y,u8 num,u8 size1,u8 mode);
- void OLED_ScrollDisplay(u8 num,u8 space,u8 mode);
- void OLED_ShowPicture(u8 x,u8 y,u8 sizex,u8 sizey,u8 BMP[],u8 mode);
- void OLED_Init(void);
- #endif
復制代碼- //////////////////////////////////////////////////////////////////////////////////
- // 說明:
- // ----------------------------------------------------------------
- // GND 電源地
- // VCC 3.3v電源
- // D0 PA1(SCL)
- // D1 PA2(SDA)
- // RES PA3
- // DC PA4
- // CS PA5
- // ----------------------------------------------------------------
- //******************************************************************************/
- #include "delay.h"
- #include "sys.h"
- #include "oled.h"
- #include "led.h"
- int main(void)
- {
- vu8 key = 0;
- delay_init();
- LED_Init();
-
- delay_ms(10000);
-
- OLED_Init();
- OLED_ColorTurn(0);//0正常顯示,1 反色顯示
- OLED_DisplayTurn(0);//0正常顯示 1 屏幕翻轉顯示
- while(1)
- {
- LED_GREEN = 0;
- OLED_Refresh();
- LED_RED = 0;
- OLED_ShowChinese(0,0,0,16,1); //我
- OLED_ShowChinese(18,0,1,16,1);//們
- OLED_ShowChinese(36,0,2,16,1);//要
- OLED_ShowChinese(54,0,3,16,1);//好
- OLED_ShowChinese(72,0,4,16,1);//好
- OLED_ShowChinese(90,0,5,16,1);//學
- OLED_ShowChinese(108,0,6,16,1);//習
- OLED_ShowString(8,16,"Study hard",16,1);
- OLED_ShowString(20,32,"2022/01/01",16,1);
- OLED_ShowString(0,48,"ASCII:",16,1);
- OLED_ShowString(63,48,"CODE:",16,1);
- LED_YELLOW = 0;
- }
- }
復制代碼
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