/*
* OLED.c
*
* Created on: 2024年3月29日
* Author: alpha
*/
#include "OLED.h"
#include "oledchar.h"
Uint16 OLED_GRAM[128][8];
void OLED_Init(void){
EALLOW; //all operations on registers need to be Add
GpioCtrlRegs.SCLMUX.bit.SCL = GPIOMUX_GPIO;
GpioCtrlRegs.SCLDIR.bit.SCL = GPIODIR_OUTPUT; //OUTPUT
GpioCtrlRegs.SCLPUD.bit.SCL = GPIOPUD_PULLUP; //PULLUP
GpioCtrlRegs.SDAMUX.bit.SDA = GPIOMUX_GPIO;
GpioCtrlRegs.SDADIR.bit.SDA = GPIODIR_OUTPUT;
GpioCtrlRegs.SDAPUD.bit.SDA = GPIOPUD_PULLUP;
SCL_LOW;
SDA_LOW;
EDIS;
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
OLED_WR_Byte(0xC8,OLED_CMD);//Set COM/Row Scan Direction
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(0x30,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);// Page Addressing Mode
OLED_WR_Byte(0x8D,OLED_CMD);//--set Charge Pump enable/disable
OLED_WR_Byte(0x14,OLED_CMD);//--set(0x10) disable
OLED_Clear();
OLED_WR_Byte(0xAF,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(0xA0,OLED_CMD);//！！！！设定x方向，0xA0选择正常方向（0xA1为反方向）
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(0xC0,OLED_CMD);//！！！！设定Y方向，0xC8正常反向，0xC0为正常方向
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
*/
}
//send one byte, mode:0:command, 1:data
void OLED_WR_Byte(Uint16 dat,Uint16 mode){
I2C_Start();
Send_Byte(0x78); //OLED address
I2C_WaitAck();
if(mode)
Send_Byte(0x40); //will write a data
else
Send_Byte(0x00); //will write a command
I2C_WaitAck();
Send_Byte(dat);
I2C_WaitAck();
I2C_Stop();
}
void I2C_Start(void){
SDA_HIGH;
IIC_Delay;
SCL_HIGH;
IIC_Delay;
SDA_LOW;
IIC_Delay;
SCL_LOW;
IIC_Delay;
}
void I2C_Stop(void){
SDA_LOW;
IIC_Delay;
SCL_HIGH;
IIC_Delay;
SDA_HIGH;
IIC_Delay;
IIC_Delay;
}
void Send_Byte(Uint16 dat){
Uint16 i;
for(i=0;i<8;i++){
if(dat&0x80)//write High bit first
SDA_HIGH;
else
SDA_LOW;
IIC_Delay;
SCL_HIGH;
IIC_Delay;
SCL_LOW;// one clock
dat<<=1;
IIC_Delay;
//SDA_LOW;
// IIC_Delay;
}
}
void I2C_WaitAck(void){
SDA_HIGH;
IIC_Delay;
SCL_HIGH;
IIC_Delay;
SCL_LOW;
IIC_Delay;
}
void OLED_Clear(void){
Uint16 i,n;
for(i=0;i<8;i++){
for(n=0;n<128;n++)
OLED_GRAM[n][i]=0;//clear all data
}
//OLED_Refresh();//
}
//x:0~127 y:0~7
void OLED_Clear_fix(U8 x1, U8 x2, U8 y1, U8 y2){
U8 i,n;
for(i=y1;i<=y2;i++){
for(n=x1;n<=x2;n++)
OLED_GRAM[n][i]=0;//clear all data
}
}
void OLED_Refresh(void){
Uint16 i,n;
for(i=0;i<8;i++){
OLED_WR_Byte(0xb0+i,OLED_CMD); //set line starting address
OLED_WR_Byte(0x00,OLED_CMD); //set low column starting address
OLED_WR_Byte(0x10,OLED_CMD); //set high column starting address
I2C_Start();
Send_Byte(0x78);
I2C_WaitAck();
Send_Byte(0x40); //will send data later
I2C_WaitAck();
for(n=0;n<128;n++){
Send_Byte(OLED_GRAM[n][i]);
I2C_WaitAck();
}
I2C_Stop();
}
}
// x:0~128 y:0~8
void OLED_Refresh_fix(Uint16 x1, Uint16 x2, Uint16 y){
Uint16 n=x1;
OLED_WR_Byte(0xb0+y,OLED_CMD); //set line starting address 8 line 128 column 0xb2
OLED_WR_Byte(0x00|(n&0x0f),OLED_CMD); //starting address low 4bit 0x00~0x0f 0x00
n=n>>4;
OLED_WR_Byte(0x10|(n&0x0f),OLED_CMD); //starting address high 4bit 0x10~0x17 eg: 0x0a, 0x1b -> start column: 0xab
I2C_Start();
Send_Byte(0x78);
I2C_WaitAck();
Send_Byte(0x40); //will send data later
I2C_WaitAck();
for(n=x1;n<x2;n++){
Send_Byte(OLED_GRAM[n][y]);
I2C_WaitAck();
}
I2C_Stop();
}
//X:0~128 y:0~64
void OLED_DrawPoint(Uint16 x,Uint16 y,Uint16 t)
{
Uint16 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];
}
}
//X:0~128 y:0~64
void OLED_ShowChar(Uint16 x,Uint16 y,char chr, Uint16 mode)
{
Uint16 i,m,temp,size2,chr1;
Uint16 y0=y;//x0=x,
//if(size1==8)size2=6;
size2 = 6;
chr1 = chr-' '; //calculate the offset value
for(i=0; i<size2; i++){
temp = asc2_0806[chr1][i]; //call 0806 font
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;
}
}
//X:0~128 y:0~64
void OLED_ShowString(Uint16 x,Uint16 y,char *chr,Uint16 mode)
{
while((*chr>=' ')&&(*chr<='~'))//
{
OLED_ShowChar(x,y,*chr,mode);
x += 6;
chr++;
}
}
//X:0~128 y:0~64
void OLED_ShowInt(Uint16 x, Uint16 y, Uint32 num, Uint16 mode){
Uint16 bitnum=0;
Uint32 temp = num;
Uint16 i=0;
if(!num)
bitnum++;
while(temp){
bitnum++;
temp=temp/10;
}
for(i=0;i<bitnum;i++){
OLED_ShowChar(x+6*bitnum-(6*i)-6, y, num%10 +'0', mode);
num=num/10;
}
}
//X:0~128 y:0~64
void OLED_ShowHex(Uint16 x, Uint16 y, Uint32 hex, Uint16 mode){
Uint32 temp=hex;
Uint16 i=0, bitnum=0;
if(!hex)
bitnum++;
while(temp){
bitnum++;
temp=temp/16;
}
for(i=0;i<bitnum;i++){
if(hex%16<10)
OLED_ShowChar(x+6*bitnum-(6*i)-6, y, hex%16+'0', mode);
else
OLED_ShowChar(x+6*bitnum-(6*i)-6, y, hex%16-10+'A', mode);
hex=hex/16;
}
}
void OLED_ShowHexfix(Uint16 x, Uint16 y, Uint32 hex, Uint16 bitnum, Uint16 mode){
Uint32 temp=hex;
Uint16 i=0;
for(i=0;i<bitnum;i++){
if(hex%16<10)
OLED_ShowChar(x+6*bitnum-(6*i)-6, y, hex%16+'0', mode);
else
OLED_ShowChar(x+6*bitnum-(6*i)-6, y, hex%16-10+'A', mode);
hex=hex/16;
}
}
//X:0~128 y:0~64
void OLED_ShowPicture(Uint16 x,Uint16 y,Uint16 sizex,Uint16 sizey,U8 BMP[],Uint16 mode)
{
Uint16 j=0;
Uint16 i,n,temp,m;
Uint16 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;
}
}
}
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本文详细介绍ASCII码表的内容，包括从00到7F的十六进制表示及其对应的字符。通过此表可以清晰地了解每个字符的编码方式，适用于计算机科学领域的初学者和技术人员参考。
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