stm32c8t6 oled
被硬件工程师坑了，公司要求用0.42寸oled，用的是中景园的屏幕，板子是硬件工程师 做的，公司要求是iic通讯，他把板子设计成spi通讯模式，留出来的接口是iic通讯，还给我一种错觉板子是没问题的。坑了我三天的工作量。
oled模块只要四根线就可实现工作，vcc，sda，scl，gnd，ssd1306驱动都是一样的，任何一个程序都能驱动oled，起码点亮oled。
具体程序如下：其中oled只需要scl，sda两根线，其他的引脚是其它用途
//////////////////////////////////////////////////////////////////////////////////
// °æ ±¾ ºÅ : v1.0
// ×÷ Õß : zzs
// Éú³ÉÈÕÆÚ : 2018-0830
// ×î½üÐÞ¸Ä :
// ¹¦ÄÜÃèÊö :0.49OLED ½Ó¿Ú³ÌÐò(STM32F103c8ϵÁÐIIC)
// ˵Ã÷:
// ----------------------------------------------------------------
// GND µçÔ´µØ
// VCC ½Ó5V»ò3.3vµçÔ´
// SCL ½ÓPD6£¨SCL£©
// SDA ½ÓPD7£¨SDA£©
// ----------------------------------------------------------------
//Copyright(C) ÄϾ©ÍغãÎïÁªÍø¿Æ¼¼
//All rights reserved
//////////////////////////////////////////////////////////////////////////////////
#include "oled.h"
#include "stdlib.h"
#include "oledfont.h"
#include "delay.h"
//OLEDµÄÏÔ´æ
//´æ·Å¸ñʽÈçÏÂ.
//[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
/**********************************************
//IIC Start
**********************************************/
/**********************************************
//IIC Start
**********************************************/
void IIC_Start()
{
OLED_SCLK_Set() ;
OLED_SDIN_Set();
delay_us(2);
OLED_SDIN_Clr();
delay_us(2);
OLED_SCLK_Clr();
delay_us(2);
}
/**********************************************
//IIC Stop
**********************************************/
void IIC_Stop()
{
OLED_SCLK_Set() ;
// OLED_SCLK_Clr();
OLED_SDIN_Clr();
delay_us(2);
OLED_SDIN_Set();
delay_us(2);
}
void IIC_Wait_Ack()
{
//GPIOB->CRH &= 0XFFF0FFFF; //ÉèÖÃPB12ΪÉÏÀÊäÈëģʽ
//GPIOB->CRH |= 0x00080000;
// OLED_SDA = 1;
// delay_us(1);
//OLED_SCL = 1;
//delay_us(50000);
/* while(1)
{
if(!OLED_SDA) //ÅжÏÊÇ·ñ½ÓÊÕµ½OLED Ó¦´ðÐźÅ
{
//GPIOB->CRH &= 0XFFF0FFFF; //ÉèÖÃPB12ΪͨÓÃÍÆÃâÊä³öģʽ
//GPIOB->CRH |= 0x00030000;
return;
}
}
*/
OLED_SCLK_Set() ;
delay_us(2);
OLED_SCLK_Clr();
delay_us(2);
}
/**********************************************
// 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++);
}
}
//×ø±êÉèÖÃ
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);
}
//¿ªÆôOLEDÏÔʾ
void OLED_Display_On(void)
{
OLED_WR_Byte(0X8D,OLED_CMD); //SET DCDCÃüÁî
OLED_WR_Byte(0X14,OLED_CMD); //DCDC ON
OLED_WR_Byte(0XAF,OLED_CMD); //DISPLAY ON
}
//¹Ø±ÕOLEDÏÔʾ
void OLED_Display_Off(void)
{
OLED_WR_Byte(0X8D,OLED_CMD); //SET DCDCÃüÁî
OLED_WR_Byte(0X10,OLED_CMD); //DCDC OFF
OLED_WR_Byte(0XAE,OLED_CMD); //DISPLAY OFF
}
//ÇåÆÁº¯Êý,ÇåÍêÆÁ,Õû¸öÆÁÄ»ÊǺÚÉ«µÄ!ºÍûµãÁÁÒ»Ñù!!!
void OLED_Clear(void)
{
u8 i,n;
for(i=0;i<8;i++)
{
OLED_WR_Byte (0xb0+i,OLED_CMD); //ÉèÖÃÒ³µØÖ·£¨0~7£©
OLED_WR_Byte (0x00,OLED_CMD); //ÉèÖÃÏÔʾλÖáªÁе͵ØÖ·
OLED_WR_Byte (0x10,OLED_CMD); //ÉèÖÃÏÔʾλÖáªÁиߵØÖ·
for(n=0;n<128;n++)OLED_WR_Byte(0,OLED_DATA);
} //¸üÐÂÏÔʾ
}
void OLED_On(void)
{
u8 i,n;
for(i=0;i<8;i++)
{
OLED_WR_Byte (0xb0+i,OLED_CMD); //ÉèÖÃÒ³µØÖ·£¨0~7£©
OLED_WR_Byte (0x00,OLED_CMD); //ÉèÖÃÏÔʾλÖáªÁе͵ØÖ·
OLED_WR_Byte (0x10,OLED_CMD); //ÉèÖÃÏÔʾλÖáªÁиߵØÖ·
for(n=0;n<128;n++)OLED_WR_Byte(1,OLED_DATA);
} //¸üÐÂÏÔʾ
}
//ÔÚÖ¸¶¨Î»ÖÃÏÔʾһ¸ö×Ö·û,°üÀ¨²¿·Ö×Ö·û
//x:0~127
//y:0~63
//mode:0,·´°×ÏÔʾ;1,Õý³£ÏÔʾ
//size:Ñ¡Ôñ×ÖÌå 16/12
void OLED_ShowChar(u8 x,u8 y,u8 chr,u8 Char_Size)
{
unsigned char c=0,i=0;
c=chr-' ';//µÃµ½Æ«ÒƺóµÄÖµ
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(F6x8[c][i],OLED_DATA);
}
}
//m^nº¯Êý
u32 oled_pow(u8 m,u8 n)
{
u32 result=1;
while(n--)result*=m;
return result;
}
//ÏÔʾ2¸öÊý×Ö
//x,y :Æðµã×ø±ê
//len :Êý×ÖµÄλÊý
//size:×ÖÌå´óС
//mode:ģʽ 0,Ìî³äģʽ;1,µþ¼Óģʽ
//num:ÊýÖµ(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
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);
}
}
//ÏÔʾһ¸ö×Ö·ûºÅ´®
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++;
}
}
//ÏÔʾºº×Ö
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;
}
}
/***********¹¦ÄÜÃèÊö£ºÏÔʾÏÔʾBMPͼƬ128¡Á64Æðʼµã×ø±ê(x,y),xµÄ·¶Î§0¡«127£¬yΪҳµÄ·¶Î§0¡«7*****************/
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
OLED_Set_Pos(x0,y);
for(x=x0;x
OLED_WR_Byte(BMP[j++],OLED_DATA);
}
}
}
//void RES_Init(void)
//{
// GPIO_InitTypeDef GPIO_InitStructure;
// RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); //ʹÄÜB¶Ë¿ÚʱÖÓ
// GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
// GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //ÍÆÍìÊä³ö
// GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//ËÙ¶È50MHz
// GPIO_Init(GPIOB, &GPIO_InitStructure); //³õʼ»¯GPIO13
// GPIO_SetBits(GPIOB,GPIO_Pin_13);
//}
//³õʼ»¯SSD1306
void OLED_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); //ʹÄÜB¶Ë¿ÚʱÖÓ
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_12;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //ÍÆÍìÊä³ö
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//ËÙ¶È50MHz
GPIO_Init(GPIOB, &GPIO_InitStructure); //³õʼ»¯GPIOD3,6¡ª
GPIO_SetBits(GPIOB,GPIO_Pin_8|GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_12);
delay_ms(800);
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
delay_ms(800);
}