atmega128單片機(jī) spi模式，OLED屏幕不亮

ID:307782 · 發(fā)表于 2019-9-2 22:58

拜托幫忙看一下我的oled屏幕一直不亮，芯片是atmega128的 oled走的是spi模式，現(xiàn)在真的搞得頭暈，實(shí)在找不到原因?yàn)樯蹲硬涣痢Ｒ韵率莖led的代碼

#include <iom128.h>
#include <delay.h>
#include <oledfont.h>
//8位LED燈控制端口定義，連接在PE口，灌電流模式
#define LED PORTE //PE口接8個(gè)LED燈
#define LEDDDR DDRE //PE口方向寄存器
#define LED4_0 PORTE &= ~(1<<PE3) //D4亮
#define LED4_1 PORTE |= (1<<PE3) //D4滅
#define u8 unsigned char
#define u32 unsigned int
#define OLED_CMD 0 //寫(xiě)命令
#define OLED_DATA 1 //寫(xiě)數(shù)據(jù)
#define OLED_RST_Clr() PORTE &= ~(1 << PE6)
#define OLED_RST_Set() PORTE |= (1 << PE6)
#define OLED_DC_Clr() PORTE &= ~(1 << PE5)
#define OLED_DC_Set() PORTE |= (1 << PE5)
#define OLED_SCLK_Clr() PORTB &= ~(1 << PB1)
#define OLED_SCLK_Set() PORTB |= (1 << PB1)
#define OLED_SDIN_Clr() PORTB &= ~(1 << PB2)
#define OLED_SDIN_Set() PORTB |= (1 << PB2)
#define SIZE 16
#define XLevelL 0x02
#define XLevelH 0x10
#define Max_Column 128
#define Max_Row 64
#define Brightness 0xFF
#define X_WIDTH 128
#define Y_WIDTH 64
u8 OLED_GRAM[8][128]; //8頁(yè) 128列
void OLED_WR_Byte(u8 dat,u8 cmd);
void OLED_Set_Pos(unsigned char x, unsigned char y) ;
void OLED_Set_Pos(unsigned char x, unsigned char y) ;
void OLED_Display_On(void);
void OLED_Display_Off(void);
void OLED_Clear(void);
void OLED_DrawPoint(u8 x,u8 y,u8 t);
void OLED_Fill(u8 x1,u8 y1,u8 x2,u8 y2,u8 dot);
void OLED_ShowChar(u8 x,u8 y,u8 chr);
void OLED_ShowNum(u8 x,u8 y,u32 num,u8 len,u8 size2);
void OLED_ShowString(u8 x,u8 y, u8 *p);
void OLED_Set_Pos(unsigned char x, unsigned char y);
void OLED_ShowCHinese(u8 x,u8 y,u8 no);
void OLED_DrawBMP(unsigned char x0, unsigned char y0,unsigned char x1, unsigned char y1,unsigned char BMP[]);
void OLED_Init(void);
void system_init();
void system_init()
{
LEDDDR=0xff; //設(shè)置PE口為輸出
LED=0xff; //初始狀態(tài)為高，關(guān)閉8個(gè)LED燈
}
//向SSD1306寫(xiě)入一個(gè)字節(jié)單位
//dat:要寫(xiě)入的數(shù)據(jù)/命令
//cmd：數(shù)據(jù)/命令標(biāo)志 0命令 1數(shù)據(jù)
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_SCLK_Clr();
if(dat&0x80)
{
OLED_SDIN_Set();
}
else OLED_SDIN_Clr();
OLED_SCLK_Set();
dat<<=1;
}
//OLED_CS_Set();
OLED_DC_Set();
}
void OLED_Set_Pos(unsigned char x, unsigned char y) //坐標(biāo)位置
{
OLED_WR_Byte(0xb0+y,OLED_CMD);//頁(yè)
OLED_WR_Byte(((x&0xf0)>>4)|0x10,OLED_CMD);//高四位
OLED_WR_Byte((x&0x0f)|0x01,OLED_CMD); //低四位
}
//開(kāi)啟OLED顯示
void OLED_Display_On(void)
{
OLED_WR_Byte(0X8D,OLED_CMD); //電荷泵設(shè)置
OLED_WR_Byte(0X14,OLED_CMD); //打開(kāi)電荷泵
OLED_WR_Byte(0XAF,OLED_CMD); //開(kāi)啟顯示
}
//關(guān)閉OLED顯示
void OLED_Display_Off(void)
{
OLED_WR_Byte(0X8D,OLED_CMD);
OLED_WR_Byte(0X10,OLED_CMD);//關(guān) A2
OLED_WR_Byte(0XAE,OLED_CMD);
}
//清屏函數(shù),清完屏,整個(gè)屏幕是黑色的!和沒(méi)點(diǎn)亮一樣!!!
void OLED_Clear(void)
{
u8 i,n;
for(i=0;i<8;i++)
{
OLED_WR_Byte (0xb0+i,OLED_CMD); //設(shè)置頁(yè)地址（0~7）
OLED_WR_Byte (0x00,OLED_CMD); //設(shè)置顯示位置—列低地址
OLED_WR_Byte (0x10,OLED_CMD); //設(shè)置顯示位置—列高地址
for(n=0;n<128;n++)OLED_WR_Byte(0,OLED_DATA);
} //更新顯示
}
//在指定位置顯示一個(gè)字符,包括部分字符
//x:0~127
//y:0~63
//mode:0,反白顯示;1,正常顯示
//size:選擇字體 16/12
void OLED_ShowChar(u8 x,u8 y,u8 chr)
{
unsigned char c=0,i=0;
c=chr-' ';//得到偏移后的值
if(x>Max_Column-1){x=0;y=y+2;}
if(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+1);
for(i=0;i<6;i++)
OLED_WR_Byte(F6x8[c][i],OLED_DATA);
}
}
//m^n函數(shù)
u32 oled_pow(u8 m,u8 n)
{
u32 result=1;
while(n--)result*=m;
return result;
}
//顯示2個(gè)數(shù)字
//x,y :起點(diǎn)坐標(biāo)
//len :數(shù)字的位數(shù)
//size:字體大小
//mode:模式 0,填充模式;1,疊加模式
//num:數(shù)值(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<len;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,' ');
//OLED_ShowChar(x+(size2/2)*t,y,' ',size2);//IIC程序中的
continue;
}else enshow=1;
}
OLED_ShowChar(x+(size2/2)*t,y,temp+'0');
}
}
//顯示一個(gè)字符號(hào)串
void OLED_ShowString(u8 x,u8 y,u8 *chr)
{
unsigned char j=0;
while (chr[j]!='\0')
{
OLED_ShowChar(x,y,chr[j]);
x+=8;
if(x>120){x=0;y+=2;}
j++;
}
}
//顯示漢字
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;
}
}
/***********功能描述：顯示顯示BMP圖片128×64起始點(diǎn)坐標(biāo)(x,y),x的范圍0～127，y為頁(yè)的范圍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<y1;y++)
{
OLED_Set_Pos(x0,y);
for(x=x0;x<x1;x++)
{
OLED_WR_Byte(BMP[j++],OLED_DATA);
}
}
}
//初始化SSD1306
void OLED_Init(void)
{
//OLED_CS_Set();
OLED_RST_Set();
delay_ms(100);
OLED_RST_Clr();
delay_ms(100);
OLED_RST_Set();
OLED_WR_Byte(0xAE,OLED_CMD);//--turn off oled panel
OLED_WR_Byte(0x00,OLED_CMD);//---set low column address低列地址
OLED_WR_Byte(0x10,OLED_CMD);//---set high column address高列地址
OLED_WR_Byte(0x40,OLED_CMD);//--set start line address Set Mapping RAM Display Start Line (0x00~0x3F)起始行地址
OLED_WR_Byte(0x81,OLED_CMD);//--set contrast control register對(duì)比度
OLED_WR_Byte(0xCF,OLED_CMD); // Set SEG Output Current Brightness對(duì)比度/亮度值
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 A6:正常/A7:反相
OLED_WR_Byte(0xA8,OLED_CMD);//--set multiplex ratio(1 to 64)驅(qū)動(dòng)路數(shù)
OLED_WR_Byte(0x3f,OLED_CMD);//--1/64 duty驅(qū)動(dòng)路數(shù)值
OLED_WR_Byte(0xD3,OLED_CMD);//-set display offset Shift Mapping RAM Counter (0x00~0x3F)設(shè)置顯示偏移
OLED_WR_Byte(0x00,OLED_CMD);//-not offset設(shè)置顯示偏移值
OLED_WR_Byte(0xd5,OLED_CMD);//--set display clock divide ratio/oscillator frequency 設(shè)置時(shí)鐘分頻因子，震蕩頻率
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設(shè)置預(yù)充電周期
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設(shè)置COM硬件引腳配置
OLED_WR_Byte(0x12,OLED_CMD);
OLED_WR_Byte(0xDB,OLED_CMD);//--set vcomh設(shè)置VCOMH倍率
//OLED_WR_Byte(0x30,OLED_CMD);//Set VCOM Deselect Level
OLED_WR_Byte(0x40,OLED_CMD);//Set VCOM Deselect Level
OLED_WR_Byte(0x20,OLED_CMD);//-Set Page Addressing Mode (0x00/0x01/0x02)設(shè)置內(nèi)存地址模式
OLED_WR_Byte(0x02,OLED_CMD);//[1:0],00，列地址模式;01，行地址模式;10,頁(yè)地址模式;默認(rèn)10;
OLED_WR_Byte(0x8D,OLED_CMD);//--set Charge Pump enable/disable電荷泵設(shè)置///////////手冊(cè)上沒(méi)找到
OLED_WR_Byte(0x14,OLED_CMD);//--set(0x10) disablebit2，開(kāi)啟/關(guān)閉
OLED_WR_Byte(0xA4,OLED_CMD);// Disable Entire Display On (0xa4/0xa5)全局顯示開(kāi)啟;bit0:1,開(kāi)啟;0,關(guān)閉;(白屏/黑屏)
OLED_WR_Byte(0xA6,OLED_CMD);// Disable Inverse Display On (0xa6/a7) 設(shè)置顯示方式;bit0:1,反相顯示;0,正常顯示
OLED_WR_Byte(0xAF,OLED_CMD);//--turn on oled panel開(kāi)啟顯示
OLED_WR_Byte(0xAF,OLED_CMD); /*display ON*/
OLED_Clear();
//OLED_Set_Pos(0,0);
}
int main(void)
{
u8 t;
system_init();
OLED_Init();
OLED_Clear();
// OLED_ShowString(30,0,"OLED TEST");
// OLED_ShowString(8,2,"ZHONGJINGYUAN");
// OLED_ShowString(20,4,"2014/05/01");
// OLED_ShowString(0,6,"ASCII:");
// OLED_ShowString(63,6,"CODE:");
// t=' ';
while(1)
{
LED = 0xFF;
PORTE &= ~(1<<PE3);
OLED_Clear();
OLED_ShowCHinese(0,0,0);//中
OLED_ShowCHinese(18,0,1);//景
OLED_ShowCHinese(36,0,2);//園
OLED_ShowCHinese(54,0,3);//電
OLED_ShowCHinese(72,0,4);//子
OLED_ShowCHinese(90,0,5);//科
OLED_ShowCHinese(108,0,6);//技
}
}

復(fù)制代碼

ID:307782 · 發(fā)表于 2019-9-4 18:09

更貼，，，，犯了一個(gè)超級(jí)超級(jí)低級(jí)的錯(cuò)誤。。。。。。。。。。沒(méi)有初始化io,真是都不想講自己了

ID:592135 · 發(fā)表于 2019-9-11 17:08

樓主F8X16[]數(shù)組的內(nèi)容是什么呀可以發(fā)給我嗎？

ID:894664 · 發(fā)表于 2021-3-21 16:41

請(qǐng)問(wèn)一下IO口在哪里初始化

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atmega128單片機(jī) spi模式，OLED屏幕不亮