msp432p401r單片機的oled顯示函數

ID:425145 · 發表于 2021-6-13 09:44

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#include "oled.h"
#include "font.h"
//SSD1303 OLED 串行接口驅動代碼
//LCD顯存存放格式如下
//[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
uint8_t LCD_GRAM[128][8];
//更新顯存到LCD
void Refresh_Gram(void)
{
uint8_t i,n;
for(i=0;i<8;i++)
{
WriteCommand (0xb0+i); //設置顯示位置—行
WriteCommand (0x02); //設置顯示位置—列低地址,偏移了2列
WriteCommand (0x10); //設置顯示位置—列高地址
for(n=0;n<128;n++)WriteData(LCD_GRAM[n][i]);
}
}
//SSD1303寫命令
//dat:要寫入的字節
void WriteCommand(uint8_t cmd)
{
uint8_t i;
OLED_DC_SET(0); //寫命令0,寫數據1
OLED_CS_SET(0);
for(i=0x80;i>0;i>>=1)
{
OLED_SCLK_SET(0); //
if(cmd&i)OLED_SDIN_SET(1); //寫1
else OLED_SDIN_SET(0); //寫0
OLED_SCLK_SET(1);
}
OLED_DC_SET(1);
OLED_CS_SET(1);
}
//SSD1303寫數據
//dat:要寫入的字節
void WriteData( uint8_t dat)
{
uint8_t i;
OLED_DC_SET(1); //寫命令0,寫數據1
OLED_CS_SET(0);
for(i=0x80;i>0;i>>=1)
{
OLED_SCLK_SET(0); //
if(dat&i)OLED_SDIN_SET(1); //寫1
else OLED_SDIN_SET(0); //寫0
OLED_SCLK_SET(1);
}
OLED_DC_SET(1);
OLED_CS_SET(1);
}
//打開OLED
void LCD_Display_On(void)
{
WriteCommand(0XAD); //SET DCDC命令
WriteCommand(0X8B); //DCDC ON
WriteCommand(0XAF); //DISPLAY ON
}
//關閉OLED
void LCD_Display_Off(void)
{
WriteCommand(0XAD); //SET DCDC命令
WriteCommand(0X8A); //DCDC OFF
WriteCommand(0XAE); //DISPLAY OFF
}
//清屏函數,清完屏,整個屏幕是黑色的!和沒點亮一樣!!!
void LCD_Clear(void)
{
uint8_t i,n;
for(i=0;i<8;i++)for(n=0;n<128;n++)LCD_GRAM[n][i]=0X00;
Refresh_Gram();//更新顯示
}
//畫點
//x:0~127
//y:0~63
//t:1 填充 0,清空
void LCD_DrawPoint( uint8_t x, uint8_t y, uint8_t t)
{
uint8_t pos,bx,temp=0;
if(x>127||y>63)return;//超出范圍了.
pos=7-y/8;
bx=y%8;
temp=1<<(7-bx);
if(t)LCD_GRAM[x][pos]|=temp;
else LCD_GRAM[x][pos]&=~temp;
}
//x1,y1,x2,y2 填充區域的對角坐標
//確保x1<=x2;y1<=y2 0<=x1<=127 0<=y1<=63
//dot:0,清空;1,填充
void LCD_Fill( uint8_t x1, uint8_t y1, uint8_t x2, uint8_t y2, uint8_t dot)
{
uint8_t x,y;
for(x=x1;x<=x2;x++)
{
for(y=y1;y<=y2;y++)LCD_DrawPoint(x,y,dot);
}
Refresh_Gram();//更新顯示
}
//在指定位置顯示一個字符,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 LCD_ShowChar(uint8_t x, uint8_t y, uint8_t chr, uint8_t size, uint8_t mode)
{
uint8_t temp,t,t1;
uint8_t y0=y;
chr=chr-' ';//得到偏移后的值
for(t=0;t<size;t++)
{
if(size==12)temp=asc2_1206[chr][t]; //調用1206字體
else temp=asc2_1608[chr][t]; //調用1608字體
for(t1=0;t1<8;t1++)
{
if(temp&0x80)LCD_DrawPoint(x,y,mode);
else LCD_DrawPoint(x,y,!mode);
temp<<=1;
y++;
if((y-y0)==size)
{
y=y0;
x++;
break;
}
}
}
}
//m^n函數
uint32_t mypow(uint8_t m, uint8_t n)
{
uint32_t result=1;
while(n--)result*=m;
return result;
}
//顯示2個數字
//x,y :起點坐標
//len :數字的位數
//size:字體大小
//mode:模式 0,填充模式;1,疊加模式
//num:數值(0~65536);
void LCD_ShowNum(uint8_t x, uint8_t y, uint16_t num, uint8_t len, uint8_t size)
{
uint8_t t,temp;
for(t=0;t<len;t++)
{
temp=(num/mypow(10,len-t-1))%10;
LCD_ShowChar(x+(size/2)*t,y,temp+'0',size,1);
}
}
//顯示字符串
//x,y:起點坐標
//*p:字符串起始地址
//用16字體
void LCD_ShowString(uint8_t x, uint8_t y, const uint8_t *p)
{
#define MAX_CHAR_POSX 122
#define MAX_CHAR_POSY 58
while(*p!='\0')
{
if(x>MAX_CHAR_POSX){x=0;y+=16;}
if(y>MAX_CHAR_POSY){y=x=0;LCD_Clear();}
LCD_ShowChar(x,y,*p,16,1);
x+=8;
p++;
}
}
void Oled_GPIO_Configuration(void)
{
P3DIR |= OLED_DC + OLED_RST;
P5DIR |= OLED_SDIN + OLED_SCLK + OLED_CS;
}
//初始化SSD1303
void LCD_Init(void)
{
uint32_t i;
Oled_GPIO_Configuration();
OLED_RST_SET(0);
for(i=0;i<100000;i++);
OLED_RST_SET(1);
WriteCommand(0x00);//設置地位列地址,低四位數據
WriteCommand(0x10);//設置高位列地址,低四位數據
WriteCommand(0x40);//設置顯示開始行地址,低五位有效 0~63
//設置對比度
WriteCommand(0x81);
WriteCommand(0x50);//對比度值:0x00~0xff
//重映射
WriteCommand(0xA1);//映射,A0:列0映射到SEG0;A1:列131映射到SEG0
//全顯示設置 ON/OFF
WriteCommand(0xA4);//A5:全部顯示 A4:普通顯示
//普通顯示/反相顯示
WriteCommand(0XA6); //A6:普通顯示 A7:反相顯示
//多元比率
WriteCommand(0xA8);//設置多元比率
WriteCommand(0x3f);//設置為0x3f;16~64
//設置DCDC
WriteCommand(0xAD);//設置DCDC
WriteCommand(0x8A);//8B=ON, 8A=Off
//顯示設置
WriteCommand(0xAE);// AF=ON , AE=OFF
//顯示偏移設置
WriteCommand(0xD3);//設置顯示偏移
WriteCommand(0x00);//不偏移
//設置顯示時鐘分頻因子 (刷新率)
WriteCommand(0xD5);//分頻因子設置
WriteCommand(0xF0);
//區域顏色模式
WriteCommand(0xD8);//設置區域顏色模式
WriteCommand(0x00);//單色模式
//COM Pins Hardware Configuration
WriteCommand(0xDA);// Set Pins HardwareConfiguration
WriteCommand(0x12);
//VCOMH設置
WriteCommand(0xDB);//Set VCOMH
WriteCommand(0x00);
//VP設置
WriteCommand(0xD9);//Set VP
WriteCommand(0x22);//P1=2 , P2=2
WriteCommand(0xc0);//配置成標準應用
LCD_Display_On(); //執行到這里,是看不到任何反應的!!
LCD_Clear(); //清屏幕
//LCD_Fill(0,0,128,64,1);//顯示出來
}

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代碼工程下載:

test_1.7z (676.46 KB, 下載次數: 35)

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msp432p401r單片機的oled顯示函數

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