请教一下，哪个函数可以实现反显，移动菜单项目显示滚动条
#include "OLED_I2C.h"
#include "delay.h"
#include "codetab.h"
u8 OLED_GRAM[128][8];
extern unsigned char character[];
void IIC_Start()
{
OLED_SCLK_Set() ;
OLED_SDIN_Set();
OLED_SDIN_Clr();
OLED_SCLK_Clr();
}
/**********************************************
//IIC Stop
**********************************************/
void IIC_Stop()
{
OLED_SCLK_Set() ;
// OLED_SCLK_Clr();
OLED_SDIN_Clr();
OLED_SDIN_Set();
}
void IIC_Wait_Ack()
{
//GPIOB->CRH &= 0XFFF0FFFF; //设置PB12为上拉输入模式
//GPIOB->CRH |= 0x00080000;
// OLED_SDA = 1;
// delay_us(1);
//OLED_SCL = 1;
//delay_us(50000);
/* while(1)
{
if(!OLED_SDA) //判断是否接收到OLED 应答信号
{
//GPIOB->CRH &= 0XFFF0FFFF; //设置PB12为通用推免输出模式
//GPIOB->CRH |= 0x00030000;
return;
}
}
*/
OLED_SCLK_Set() ;
OLED_SCLK_Clr();
}
/**********************************************
// 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 WriteCmd(unsigned char I2C_Command)//写命令
{
Write_IIC_Command(I2C_Command);
}
void WriteDat(unsigned char I2C_Data)//写数据
{
Write_IIC_Data(I2C_Data);
}
void OLED_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE); //使能A端口时钟
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13|GPIO_Pin_14;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//速度50MHz
GPIO_Init(GPIOC, &GPIO_InitStructure); //初始化GPIOD3,6
GPIO_SetBits(GPIOC,GPIO_Pin_13|GPIO_Pin_14);
delay_ms(100); //这里的延时很重要
WriteCmd(0xAE); //display off
WriteCmd(0x20); //Set Memory Addressing Mode
WriteCmd(0x10); //00,Horizontal Addressing Mode;01,Vertical Addressing Mode;10,Page Addressing Mode (RESET);11,Invalid
WriteCmd(0xb0); //Set Page Start Address for Page Addressing Mode,0-7
WriteCmd(0xc8); //Set COM Output Scan Direction
WriteCmd(0x00); //---set low column address
WriteCmd(0x10); //---set high column address
WriteCmd(0x40); //--set start line address
WriteCmd(0x81); //--set contrast control register
WriteCmd(0x0f); //亮度调节 0x00~0xff
WriteCmd(0xa1); //--set segment re-map 0 to 127
WriteCmd(0xa6); //--set normal display
WriteCmd(0xa8); //--set multiplex ratio(1 to 64)
WriteCmd(0x3F); //
WriteCmd(0xa4); //0xa4,Output follows RAM content;0xa5,Output ignores RAM content
WriteCmd(0xd3); //-set display offset
WriteCmd(0x00); //-not offset
WriteCmd(0xd5); //--set display clock divide ratio/oscillator frequency
WriteCmd(0xf0); //--set divide ratio
WriteCmd(0xd9); //--set pre-charge period
WriteCmd(0x22); //
WriteCmd(0xda); //--set com pins hardware configuration
WriteCmd(0x12);
WriteCmd(0xdb); //--set vcomh
WriteCmd(0x20); //0x20,0.77xVcc
WriteCmd(0x8d); //--set DC-DC enable
WriteCmd(0x14); //
WriteCmd(0xaf); //--turn on oled panel
}
void OLED_SetPos(unsigned char x, unsigned char y) //设置起始点坐标
{
WriteCmd(0xb0+y);
WriteCmd(((x&0xf0)>>4)|0x10);
WriteCmd((x&0x0f)|0x01);
}
void OLED_Fill(unsigned char fill_Data)//全屏填充
{
unsigned char m,n;
for(m=0;m<8;m++)
{
WriteCmd(0xb0+m); //page0-page1
WriteCmd(0x00); //low column start address
WriteCmd(0x10); //high column start address
for(n=0;n<128;n++)
{
WriteDat(fill_Data);
}
}
}
void OLED_CLS(void)//清屏
{
OLED_Fill(0x00);
}
//--------------------------------------------------------------
// Prototype : void OLED_ON(void)
// Calls :
// Parameters : none
// Description : 将OLED从休眠中唤醒
//--------------------------------------------------------------
void OLED_ON(void)
{
WriteCmd(0X8D); //设置电荷泵
WriteCmd(0X14); //开启电荷泵
WriteCmd(0XAF); //OLED唤醒
}
//--------------------------------------------------------------
// Prototype : void OLED_OFF(void)
// Calls :
// Parameters : none
// Description : 让OLED休眠 -- 休眠模式下,OLED功耗不到10uA
//--------------------------------------------------------------
void OLED_OFF(void)
{
WriteCmd(0X8D); //设置电荷泵
WriteCmd(0X10); //关闭电荷泵
WriteCmd(0XAE); //OLED休眠
}
void OLED_Set_Pos(unsigned char x, unsigned char y)
{ WriteCmd(0xb0+y);
WriteCmd(((x&0xf0)>>4)|0x10);
WriteCmd((x&0x0f));
}
//--------------------------------------------------------------
// Prototype : void OLED_ShowChar(unsigned char x, unsigned char y, unsigned char ch[], unsigned char TextSize)
// Calls :
// Parameters : x,y -- 起始点坐标(x:0~127, y:0~7); ch[] -- 要显示的字符串; TextSize -- 字符大小(1:6*8 ; 2:8*16)
// Description : 显示codetab.h中的ASCII字符,有6*8和8*16可选择
//--------------------------------------------------------------
void OLED_ShowStr(unsigned char x, unsigned char y, char ch[], unsigned char TextSize)
{
unsigned char c = 0,i = 0,j = 0;
switch(TextSize)
{
case 1:
{
while(ch[j] != '\0')
{
c = ch[j] - 32;
if(x > 126)
{
x = 0;
y++;
}
OLED_SetPos(x,y);
for(i=0;i<6;i++)
WriteDat(F6x8[c][i]);
x += 6;
j++;
}
}break;
case 2:
{
while(ch[j] != '\0')
{
c = ch[j] - 32;
if(x > 120)
{
x = 0;
y++;
}
OLED_SetPos(x,y);
for(i=0;i<8;i++)
WriteDat(F8X16[c*16+i]);
OLED_SetPos(x,y+1);
for(i=0;i<8;i++)
WriteDat(F8X16[c*16+i+8]);
x += 8;
j++;
}
}break;
}
}
void OLED_ShowStr1(unsigned char x, unsigned char y, char ch[], unsigned char TextSize)
{
unsigned char c = 0,i = 0,j = 0;
switch(TextSize)
{
case 1:
{
while(ch[j] != '\0')
{
c = ch[j] - 32;
if(x > 126)
{
x = 0;
y++;
}
OLED_SetPos(x,y);
for(i=0;i<6;i++)
WriteDat(F6x8[c][i]);
x += 6;
j++;
}
}break;
case 2:
{
while(ch[j] != '\0')
{
c = ch[j] - 32;
if(x > 120)
{
x = 0;
y++;
}
OLED_SetPos(x,y);
for(i=0;i<8;i++)
WriteDat(~F8X16[c*16+i]);
OLED_SetPos(x,y+1);
for(i=0;i<8;i++)
WriteDat(~F8X16[c*16+i+8]);
x += 8;
j++;
}
}break;
}
}
void OLED_ShowoneStr(unsigned char x, unsigned char y,char ch)
{
unsigned char c = 0,i = 0;
c = ch - 32;
OLED_SetPos(x,y);
for(i=0;i<8;i++)
WriteDat(F8X16[c*16+i]);
OLED_SetPos(x,y+1);
for(i=0;i<8;i++)
WriteDat(F8X16[c*16+i+8]);
}
//--------------------------------------------------------------
// Prototype : void OLED_ShowCN(unsigned char x, unsigned char y, unsigned char N)
// Calls :
// Parameters : x,y -- 起始点坐标(x:0~127, y:0~7); N:汉字在codetab.h中的索引
// Description : 显示codetab.h中的汉字,16*16点阵
//--------------------------------------------------------------
void OLED_ShowCN(unsigned char x, unsigned char y, unsigned char N)
{
unsigned char wm=0;
unsigned int adder=32*N;
OLED_SetPos(x , y);
for(wm = 0;wm < 16;wm++)
{
WriteDat(F16x16[adder]);
adder += 1;
}
OLED_SetPos(x,y + 1);
for(wm = 0;wm < 16;wm++)
{
WriteDat(F16x16[adder]);
adder += 1;
}
}
u8 OLED_findoneCN(u8 ch1,u8 ch2)
{
u8 j=0;
while(character[j]!='\0')
{
if(ch1==character[j]&&ch2==character[j+1])
return j/2+1;
j+=2;
}
return 0;
}
void OLED_Show(u8 x, u8 y,u8 ch[])
{
int j=0,k;
while(ch[j] != '\0')
{
if(ch[j]>0x80)//汉字
{
k=OLED_findoneCN(ch[j],ch[j+1]);
if(k!=0)OLED_ShowCN(j*8+x,y,k-1);
j+=2;
}
else//ASCLL
{
OLED_ShowoneStr(j*8+x,y,ch[j]);
j++;
}
}
}
void OLED_DrawPoint(u8 x,u8 y,u8 t)
{
u8 pos,bx,temp=0;
if(x>127||y>63)return;//超出范围了.
pos=7-y/8; //这段代码可以写成以下样子
bx=y%8; //if(t)OLED_GRAM[x][7-y/8]|=1<<(7-y%8);
temp=1<<(7-bx); //if(t)OLED_GRAM[x][7-y/8]|=~(1<<(7-y%8));
if(t)OLED_GRAM[x][pos]|=temp;
else OLED_GRAM[x][pos]&=~temp;
}
//在指定位置显示一个字符,包括部分字符
//x:0~127
//y:0~63
//mode:0,反白显示;1,正常显示
//size:选择字体 16/12
void OLED_ShowChar(u8 x,u8 y,u8 chr,u8 size,u8 mode)
{
u8 temp,t,t1;
u8 y0=y;
u8 csize=(size/8+((size%8)?1:0))*(size/2); //得到字体一个字符对应点阵集所占的字节数
chr=chr-' ';//得到偏移后的值
for(t=0;t<csize;t++)
{
if(size==12)temp=F6x8[chr][t]; //调用1206字体
// else if(size==16)temp=asc2_1608[chr][t]; //调用1608字体
// else if(size==24)temp=asc2_2412[chr][t]; //调用2412字体
else return; //没有的字库
for(t1=0;t1<8;t1++)
{
if(temp&0x80)OLED_DrawPoint(x,y,mode);
else OLED_DrawPoint(x,y,!mode);
temp<<=1;
y++;
if((y-y0)==size)
{
y=y0;
x++;
break;
}
}
}
}
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