新手用stm32f4模拟iic驱动oled的代码已调试望大神指点

ID:471373 · 发表于 2019-1-21 18:44

新手用stm32f4模拟iic驱动oled的代码已调试望大神指点

单片机源程序如下:

#include "oled.h"
#include "codetab.h"
#include "delay.h"
#include "myiic.h"
///**********************************************
////IIC Start
//**********************************************/
//void IIC_Start()
//{
// SCL = high;
// SDA = high;
// delay_us(2);
// SDA = low;
// delay_us(2);
// SCL = low;
//}
///**********************************************
////IIC Stop
//**********************************************/
//void IIC_Stop()
//{
// SCL = low;
// SDA = low;
// delay_us(2);
// SCL = high;
// SDA = high;
// delay_us(2);
//}
///**********************************************
//// 通过I2C总线写一个字节
//**********************************************/
void Write_IIC_Byte(unsigned char IIC_Byte)
{
unsigned char i;
for(i=0;i<8;i++)
{
if(IIC_Byte & 0x80)
IIC_SDA=1;
else
IIC_SDA=0;
IIC_SCL=high;
delay_us(4);
IIC_SCL=0;
IIC_Byte<<=1;
}
IIC_SDA = 1; //原程序这里有一个拉高SDA，根据OLED的DATASHEET，此句必须去掉。
IIC_SCL=1;
delay_us(4);
IIC_SCL=0;
}
/*********************OLED写数据************************************/
void OLED_WrDat(unsigned char IIC_Data)
{
IIC_Start();
IIC_Send_Byte(0x78); //D/C#=0; R/W#=0
IIC_Wait_Ack();
IIC_Send_Byte(0x40); //write data
IIC_Wait_Ack();
IIC_Send_Byte(IIC_Data);
IIC_Wait_Ack();
IIC_Stop();
}
/*********************OLED写命令************************************/
void OLED_WrCmd(unsigned char IIC_Command)
{
IIC_Start();
IIC_Send_Byte(0x78); //Slave address,SA0=0
if(IIC_Wait_Ack())
{
while(1);
}
IIC_Send_Byte(0x00); //write command
IIC_Wait_Ack();
IIC_Send_Byte(IIC_Command);
IIC_Wait_Ack();
IIC_Stop();
}
/*********************OLED 设置坐标************************************/
void OLED_Set_Pos(unsigned char x, unsigned char y)
{
OLED_WrCmd(0xb0+y);
OLED_WrCmd(((x&0xf0)>>4)|0x10);
OLED_WrCmd((x&0x0f)|0x01);
}
/*********************OLED全屏************************************/
void OLED_Fill(unsigned char bmp_dat)
{
unsigned char y,x;
for(y=0;y<8;y++)
{
OLED_WrCmd(0xb0+y);
OLED_WrCmd(0x01);
OLED_WrCmd(0x10);
for(x=0;x<X_WIDTH;x++)
OLED_WrDat(bmp_dat);
}
}
/*********************OLED复位************************************/
void OLED_CLS(void)
{
unsigned char y,x;
for(y=0;y<8;y++)
{
OLED_WrCmd(0xb0+y);
OLED_WrCmd(0x01);
OLED_WrCmd(0x10);
for(x=0;x<X_WIDTH;x++)
OLED_WrDat(0);
}
}
/*********************OLED初始化************************************/
void OLED_Init(void)
{
delay_ms(500);//初始化之前的延时很重要！
OLED_WrCmd(0xae);//--turn off oled panel
OLED_WrCmd(0x00);//---set low column address
OLED_WrCmd(0x10);//---set high column address
OLED_WrCmd(0x40);//--set start line address Set Mapping RAM Display Start Line (0x00~0x3F)
OLED_WrCmd(0x81);//--set contrast control register
OLED_WrCmd(Brightness); // Set SEG Output Current Brightness
OLED_WrCmd(0xa1);//--Set SEG/Column Mapping 0xa0左右反置 0xa1正常
OLED_WrCmd(0xc8);//Set COM/Row Scan Direction 0xc0上下反置 0xc8正常
OLED_WrCmd(0xa6);//--set normal display
OLED_WrCmd(0xa8);//--set multiplex ratio(1 to 64)
OLED_WrCmd(0x3f);//--1/64 duty
OLED_WrCmd(0xd3);//-set display offset Shift Mapping RAM Counter (0x00~0x3F)
OLED_WrCmd(0x00);//-not offset
OLED_WrCmd(0xd5);//--set display clock divide ratio/oscillator frequency
OLED_WrCmd(0x80);//--set divide ratio, Set Clock as 100 Frames/Sec
OLED_WrCmd(0xd9);//--set pre-charge period
OLED_WrCmd(0xf1);//Set Pre-Charge as 15 Clocks & Discharge as 1 Clock
OLED_WrCmd(0xda);//--set com pins hardware configuration
OLED_WrCmd(0x12);
OLED_WrCmd(0xdb);//--set vcomh
OLED_WrCmd(0x40);//Set VCOM Deselect Level
OLED_WrCmd(0x20);//-Set Page Addressing Mode (0x00/0x01/0x02)
OLED_WrCmd(0x02);//
OLED_WrCmd(0x8d);//--set Charge Pump enable/disable
OLED_WrCmd(0x14);//--set(0x10) disable
OLED_WrCmd(0xa4);// Disable Entire Display On (0xa4/0xa5)
OLED_WrCmd(0xa6);// Disable Inverse Display On (0xa6/a7)
OLED_WrCmd(0xaf);//--turn on oled panel
OLED_Fill(0x00); //初始清屏
OLED_Set_Pos(0,0);
}
/***************功能描述：显示6*8一组标准ASCII字符串显示的坐标（x,y），y为页范围0～7****************/
void OLED_P6x8Str(unsigned char x,unsigned char y,unsigned char ch[])
{
unsigned char c=0,i=0,j=0;
while (ch[j]!='\0')
{
c =ch[j]-32;
if(x>126){x=0;y++;}
OLED_Set_Pos(x,y);
for(i=0;i<6;i++)
OLED_WrDat(F6x8[c][i]);
x+=6;
j++;
}
}
/*******************功能描述：显示8*16一组标准ASCII字符串显示的坐标（x,y），y为页范围0～7****************/
void OLED_P8x16Str(unsigned char x,unsigned char y,unsigned char ch[])
{
unsigned char c=0,i=0,j=0;
while (ch[j]!='\0')
{
c =ch[j]-32;
if(x>120){x=0;y++;}
OLED_Set_Pos(x,y);
for(i=0;i<8;i++)
OLED_WrDat(F8X16[c*16+i]);
OLED_Set_Pos(x,y+1);
for(i=0;i<8;i++)
OLED_WrDat(F8X16[c*16+i+8]);
x+=8;
j++;
}
}
/*****************功能描述：显示16*16点阵显示的坐标（x,y），y为页范围0～7****************************/
void OLED_P16x16Ch(unsigned char x,unsigned char y,unsigned int N)
{
unsigned char wm=0;
unsigned int adder=32*N;
OLED_Set_Pos(x , y);
for(wm = 0;wm < 16;wm++)
{
OLED_WrDat(F16x16[adder]);
adder += 1;
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