STM32F1xx外设IIC驱动四线OLED

1、打开Keil uVision5，建立STM32F1xx工程。Toolchain : MDK-ARM Professional Version: 5.30.0.0STM32F1xx支持包 :Keil.STM32F1xx_DFP.2.3.0.pack

2、OLED GPIO定义#define OLED_GPIO GPIOB#define OLED_SCK_Pin GPIO_Pin_10#define OLED_SDA_Pin GPIO_Pin_11#define OLED_SCK_SET() GPIO_SetBits(OLED_GPIO, OLED_SCK_Pin)#define OLED_SCK_CLR() GPIO_ResetBits(OLED_GPIO, OLED_SCK_Pin)

3、IIC写字节。wByte字节数据staticvoidvIIC_WriteByte(u8wByte){u8i=0;OLED_SCK_CLR();for(i=0;i<BYTE_BIT;i++){if((wByte<<i)&0x80)OLED_SDA_SET();elseOLED_SDA_CLR();OLED_SCK_SET();OLED_SCK_CLR();}}

4、写命令。staticvoidvIIC_WriteCmd(u8wCmd){vIIC_Start();vIIC_WriteByte(0x78);vIIC_WaitAck();vIIC_WriteByte(0x00);vIIC_WaitAck();vIIC_WriteByte(wCmd);vIIC_WaitAck();vIIC_Stop();}写数据。staticvoidvIIC_WriteData(u8wDat){vIIC_Start();vIIC_WriteByte(0x78);vIIC_WaitAck();vIIC_WriteByte(0x40);vIIC_WaitAck();vIIC_WriteByte(wDat);vIIC_WaitAck();vIIC_Stop();}

5、画点函数staticvoidvOLED_DrawPoint(u8x,u8y,u8mode){u8pos=0,bx=0,temp=0;if((x>(OLED_XWIDTH_PHYSICS-1))||(y>(OLED_YHEIGHT_PHYSICS-1)))//Validsitereturn;pos=(OLED_PAGE_SIZE-1)-(y/OLED_PAGE_SIZE);bx=y%OLED_PAGE_SIZE;temp=1<<((OLED_PAGE_SIZE-1)-bx);if(mode)OLED_GRAM[x][pos]|=temp;elseOLED_GRAM[x][pos]&=~temp;}填充或者清空矩形voidvOLED_FillClearRectangle(u8x1,u8y1,u8x2,u8y2,u8mode){u8x,y;for(x=x1;x<=x2;x++){for(y=y1;y<=y2;y++)vOLED_DrawPoint(x,y,mode);}}

6、显示一个字符static vo坡纠课柩id vOLED_ShowChar(u8 x, u8 y, u8 chr, u8 si芰垄孕动ze){ u8 bChar = 0, t = 0, i = 0; u8 cbSize = 0, y0 = y; cbSize = ((size/BYTE_BIT) + ((size%BYTE_BIT) ? 1 : 0)) * (size/HALF_WORD_BYTE);//Get byte number of a char chr = chr-' '; for(t=0; t<cbSize; t++) { if(size == OLED_FONT_1206_SIZE) bChar = ASCII_1206[chr][t]; else if(size == OLED_FONT_1608_SIZE) bChar = ASCII_1608[chr][t]; else if(size == OLED_FONT_2412_SIZE) bChar = ASCII_2412[chr][t]; else return; for(i=0; i<BYTE_BIT; i++) { if((bChar << i) & 0x80) vOLED_DrawPoint(x, y, 1); y++; if((y-y0) == size) { y = y0; x++; break; } } } }显示字符串void vOLED_ShowString(u8 x, u8 y, u8 size, const u8 * pStr){ while((*pStr <= '~') && (*pStr >= ' ')) { if(x > (OLED_XWIDTH_PHYSICS - (size/HALF_WORD_BYTE))) { y += size; x = 0; } if(y > (OLED_YHEIGHT_PHYSICS - size)) { y = x= 0; vOLED_Clear(); } vOLED_ShowChar(x, y, *pStr, size); x += (size/HALF_WORD_BYTE); pStr++; }}

7、显示数字void vOLED_ShowNum(u8 x, u8 y, u8 size, u8 len, u32 num){ u8 t,temp; u8 ens茑霁酌绡how=0; for(t=0; t<len; t++) { temp = (num/mypow(10, len-t-1)) % 10; if((!enshow) && (t < (len-1))) { if(temp == 0) { vOLED_ShowChar(x+(size/2)*t, y, ' ', size); continue; } else enshow=1; } vOLED_ShowChar(x+(size/2)*t, y, temp+'0', size); }}显示中文void vOLED_ShowChinese(u8 x, u8 y, const u8 (*pFont)[16], u8 index){ u8 i = 0; u8 n = 0; u8 y0 = y; u8 dat = 0; for(n=0; n<HALF_WORD_BIT; n++) { for(i=0; i<BYTE_BIT; i++) { dat = *(pFont[index*2] + n); if((dat << i) & 0x80) vOLED_DrawPoint(x, y, 1); y++; if((y-y0) == 16) { y = y0; x++; break; } } } for(n=0; n<HALF_WORD_BIT; n++) { for(i=0; i<BYTE_BIT; i++) { dat = *(pFont[index*2 + 1] + n); if((dat << i) & 0x80) vOLED_DrawPoint(x, y, 1); y++; if((y-y0) == 16) { y = y0; x++; break; } } }}显示图片void vOLED_ShowBitmp(u8 x, u8 y, u8 xWidth, u8 yHeight, const u8 * pImage){ u8 k = 0, j = 0; u8 i = 0, n = 0; u8 yMax = 0; u8 y0 = y; yMax = ((yHeight % BYTE_BIT) == 0) ? (yHeight / BYTE_BIT) : (( yHeight / BYTE_BIT) + 1); for(k=0; k<xWidth; k++) { for(j=0; j<yMax; j++) { for(i=0; i<BYTE_BIT; i++) { if((pImage[n] << i) & 0x80) vOLED_DrawPoint(x, y, 1); y++; if((y-y0) == yHeight) { y = y0; x++; break; } } n++; } }}

8、 vOLED_Sho嘛术铹砾wChinese(0, 0, ZHtest, 0); vOLED_ShowChinese(16, 0, ZHtest, 1)稆糨孝汶; vOLED_ShowChinese(32, 0, ZHtest, 2); vOLED_ShowChinese(48, 0, ZHtest, 3); vOLED_ShowChinese(64, 0, ZHtest, 4); vOLED_ShowChinese(80, 0, ZHtest, 5); vOLED_ShowBitmp(105, 0, 24, 16, IMGtest); vOLED_ShowNum(45, 14, 24, 3, 888); vOLED_ShowString(10, 39, 12, (const u8 *)"xSuper Raphael Ceo"); vOLED_ShowString(0, 52, 12, (const u8 *)__DATE__); vOLED_ShowString(80, 52, 12, (const u8 *)__TIME__); vOLED_GRAM_Update();void vIWDG_Task(void *pdata){ u8 i = 0; while(1) { OSTimeDlyHMSM(0, 0, 1, 0); vOLED_FillClearRectangle(45, 16, 80, 38, 0); vOLED_ShowNum(45, 14, 24, 3, i++); vOLED_GRAM_Update(); LED3 = ~LED3; }}