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回复【8楼】正点原子:查了好几遍都查不出问题
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#include "lcd.h"
#include "stdlib.h"
#include "font.h"
#include "usart.h"
#include "delay.h"
//////////////////////////////////////////////////////////////////////////////////
//本程序只供学习使用，未经作者许可，不得用于其它任何用途
//Mini STM32开发板
//2.4/2.8寸TFT液晶驱动
//支持驱动IC型号包括:ILI9325/RM68021/ILI9320/ILI9328/LGDP4531/LGDP4535/SPFD5408/SSD1289/1505/B505等
//正点原子@ALIENTEK
//技术论坛:www.openedv.com
//创建日期:2011/1/13
//版本：V1.6
//版权所有，盗版必究。
//Copyright(C) 正点原子 2009-2019
//All rights reserved
//********************************************************************************
//V1.2修改说明
//支持了SPFD5408的驱动,另外把液晶ID直接打印成HEX格式.方便查看LCD驱动IC.
//V1.3
//加入了快速IO的支持
//修改了背光控制的极性（适用于V1.8及以后的开发板版本）
//对于1.8版本之前(不包括1.8)的液晶模块,请修改LCD_Init函数的LCD_LED=1;为LCD_LED=1;
//V1.4
//修改了LCD_ShowChar函数，使用画点功能画字符。
//加入了横竖屏显示的支持
//V1.5 20110730
//1,修改了B505液晶读颜色有误的bug.
//2,修改了快速IO及横竖屏的设置方式.
//V1.6 20111116
//1,加入对LGDP4535液晶的驱动支持
//////////////////////////////////////////////////////////////////////////////////
//画笔颜色,背景颜色
u16 POINT_COLOR = 0x0000,BACK_COLOR = 0xFFFF;
u16 DeviceCode;
#if LCD_FAST_IO==1 //快速IO
//写寄存器函数
void LCD_WR_REG(u8 data)
{
LCD_RS_CLR;//写地址
LCD_CS_CLR;
DATAOUT(data);
LCD_WR_CLR;
LCD_WR_SET;
LCD_CS_SET;
}
#else//正常IO
//写寄存器函数
void LCD_WR_REG(u8 data)
{
LCD_RS=0;//写地址
LCD_CS=0;
DATAOUT(data);
LCD_WR=0;
LCD_WR=1;
LCD_CS=1;
}
#endif
//写寄存器
void LCD_WriteReg(u8 LCD_Reg, u16 LCD_RegValue)
{
LCD_WR_REG(LCD_Reg);
LCD_WR_DATA(LCD_RegValue);
}
//读寄存器
u16 LCD_ReadReg(u8 LCD_Reg)
{
u16 t;
LCD_WR_REG(LCD_Reg); //写入要读的寄存器号
GPIOC->CRL=0X88888888; //PC0-7 上拉输入
GPIOB->CRH=0X88888888; //PB8-15 上拉输入
GPIOC->ODR|=0X00FF; //PC0-7输出高
GPIOB->ODR|=0XFF00; //PB8-15输出高
#if LCD_FAST_IO==1 //快速IO
LCD_RS_SET;
LCD_CS_CLR;
//读取数据(读寄存器时,并不需要读2次)
LCD_RD_CLR;
delay_us(5);//FOR 8989,延时5us
LCD_RD_SET;
t=DATAIN;
LCD_CS_SET;
#else
LCD_RS=1;
LCD_CS=0;
//读取数据(读寄存器时,并不需要读2次)
LCD_RD=0;
LCD_RD=1;
t=DATAIN;
LCD_CS=1;
#endif
GPIOC->CRL=0X33333333; //PC0-7 上拉输出
GPIOB->CRH=0X33333333; //PB8-15 上拉输出
GPIOC->ODR|=0X00FF; //PC0-7输出高
GPIOB->ODR|=0XFF00; //PB8-15输出高
return t;
}
//开始写GRAM
void LCD_WriteRAM_Prepare(void)
{
LCD_WR_REG(R34);
}
//LCD写GRAM
void LCD_WriteRAM(u16 RGB_Code)
{
LCD_WR_DATA(RGB_Code);//写十六位GRAM
}
//从ILI93xx读出的数据为GBR格式，而我们写入的时候为RGB格式。
//通过该函数转换
//c:GBR格式的颜色值
//返回值：RGB格式的颜色值
u16 LCD_BGR2RGB(u16 c)
{
u16 r,g,b,rgb;
b=(c>>0)&0x1f;
g=(c>>5)&0x3f;
r=(c>>11)&0x1f;
rgb=(b<<11)+(g<<5)+(r<<0);
return(rgb);
}
//读取个某点的颜色值
//x:0~239
//y:0~319
//返回值:此点的颜色
u16 LCD_ReadPoint(u16 x,u16 y)
{
u16 t;
if(x>=LCD_W||y>=LCD_H)return 0;//超过了范围,直接返回
LCD_SetCursor(x,y);
LCD_WR_REG(R34); //选择GRAM地址
GPIOC->CRL=0X88888888; //PC0-7 上拉输入
GPIOB->CRH=0X88888888; //PB8-15 上拉输入
GPIOC->ODR|=0X00FF; //PC0-7输出高
GPIOB->ODR|=0XFF00; //PB8-15输出高
#if LCD_FAST_IO==1 //快速IO
LCD_RS_SET;
LCD_CS_CLR;
//读取数据(读GRAM时,需要读2次)
LCD_RD_CLR;
LCD_RD_SET;
delay_us(2);//FOR 9320,延时2us
//dummy READ
LCD_RD_CLR;
delay_us(2);//FOR 8989,延时2us
LCD_RD_SET;
t=DATAIN;
LCD_CS_SET;
#else
LCD_RS=1;
LCD_CS=0;
//读取数据(读GRAM时,需要读2次)
LCD_RD=0;
LCD_RD=1;
//dummy READ
LCD_RD=0;
LCD_RD=1;
t=DATAIN;
LCD_CS=1;
#endif
GPIOC->CRL=0X33333333; //PC0-7 上拉输出
GPIOB->CRH=0X33333333; //PB8-15 上拉输出
GPIOC->ODR|=0X00FF; //PC0-7输出高
GPIOB->ODR|=0XFF00; //PB8-15输出高
if(DeviceCode==0X4535||DeviceCode==0X4531||DeviceCode==0X8989||DeviceCode==0XB505)return t;//这几种IC直接返回颜色值
else return LCD_BGR2RGB(t);
}
//LCD开启显示
void LCD_DisplayOn(void)
{
LCD_WriteReg(R7, 0x0173); //26万色显示开启
}
//LCD关闭显示
void LCD_DisplayOff(void)
{
LCD_WriteReg(R7, 0x0);//关闭显示
}
//设置光标位置
//Xpos:横坐标
//Ypos:纵坐标
__inline void LCD_SetCursor(u16 Xpos, u16 Ypos)
{
#if USE_HORIZONTAL==1
if(DeviceCode==0X8989)
{
LCD_WriteReg(0X4E, Ypos);
LCD_WriteReg(0X4F, 319-Xpos);
}else
{
LCD_WriteReg(R32, Ypos);
LCD_WriteReg(R33, 319-Xpos);
}
#else
if(DeviceCode==0X8989)
{
LCD_WriteReg(0X4E, Xpos);
LCD_WriteReg(0X4F, Ypos);
}else
{
LCD_WriteReg(R32, Xpos);
LCD_WriteReg(R33, Ypos);
}
#endif
}
//画点
//x:0~239
//y:0~319
//POINT_COLOR:此点的颜色
void LCD_DrawPoint(u16 x,u16 y)
{
LCD_SetCursor(x,y);//设置光标位置
LCD_WR_REG(R34);//开始写入GRAM
LCD_WR_DATA(POINT_COLOR);
}
//初始化lcd
//该初始化函数可以初始化各种ILI93XX液晶,但是其他函数是基于ILI9320的!!!
//在其他型号的驱动芯片上没有测试!
void LCD_Init(void)
{
RCC->APB2ENR|=1<<3;//先使能外设PORTB时钟
RCC->APB2ENR|=1<<4;//先使能外设PORTC时钟
RCC->APB2ENR|=1<<0; //开启辅助时钟
JTAG_Set(SWD_ENABLE); //开启SWD
//PORTC0~12复用推挽输出
GPIOC->CRH&=0XFFF00000;
GPIOC->CRH|=0X00033333;
GPIOC->CRL&=0X00000000;
GPIOC->CRL|=0X33333333;
GPIOC->ODR|=0X1FFF;
//PORTB8~15 推挽输出
GPIOB->CRH&=0X00000000;
GPIOB->CRH|=0X33333333;
GPIOB->CRL&=0XFFFFFFFF;
GPIOB->CRL|=0X00000000;
GPIOB->ODR|=0XFF00;
delay_ms(50); // delay 50 ms
LCD_WriteReg(0x0000,0x0001);
delay_ms(50); // delay 50 ms
DeviceCode = LCD_ReadReg(0x0000);
printf(" LCD ID:%x\n",DeviceCode); //打印LCD ID
if(DeviceCode==0x9325||DeviceCode==0x9328)//ILI9325
{
LCD_WriteReg(0x00e7,0x0010);
LCD_WriteReg(0x0000,0x0001);//开启内部时钟
LCD_WriteReg(0x0001,0x0100);
LCD_WriteReg(0x0002,0x0700);//电源开启
//LCD_WriteReg(0x0003,(1<<3)|(1<<4) ); //65K RGB
//DRIVE TABLE(寄存器 03H)
//BIT3=AM BIT4:5=ID0:1
//AM ID0 ID1 FUNCATION
// 0 0 0 R->L D->U
// 1 0 0 D->U R->L
// 0 1 0 L->R D->U
// 1 1 0 D->U L->R
// 0 0 1 R->L U->D
// 1 0 1 U->D R->L
// 0 1 1 L->R U->D 正常就用这个.
// 1 1 1 U->D L->R
LCD_WriteReg(0x0003,(1<<12)|(3<<4)|(0<<3) );//65K
LCD_WriteReg(0x0004,0x0000);
LCD_WriteReg(0x0008,0x0207);
LCD_WriteReg(0x0009,0x0000);
LCD_WriteReg(0x000a,0x0000);//display setting
LCD_WriteReg(0x000c,0x0001);//display setting
LCD_WriteReg(0x000d,0x0000);//0f3c
LCD_WriteReg(0x000f,0x0000);
//电源配置
LCD_WriteReg(0x0010,0x0000);
LCD_WriteReg(0x0011,0x0007);
LCD_WriteReg(0x0012,0x0000);
LCD_WriteReg(0x0013,0x0000);
delay_ms(50);
LCD_WriteReg(0x0010,0x1590);
LCD_WriteReg(0x0011,0x0227);
delay_ms(50);
LCD_WriteReg(0x0012,0x009c);
delay_ms(50);
LCD_WriteReg(0x0013,0x1900);
LCD_WriteReg(0x0029,0x0023);
LCD_WriteReg(0x002b,0x000e);
delay_ms(50);
LCD_WriteReg(0x0020,0x0000);
LCD_WriteReg(0x0021,0x013f);
delay_ms(50);
//伽马校正
LCD_WriteReg(0x0030,0x0007);
LCD_WriteReg(0x0031,0x0707);
LCD_WriteReg(0x0032,0x0006);
LCD_WriteReg(0x0035,0x0704);
LCD_WriteReg(0x0036,0x1f04);
LCD_WriteReg(0x0037,0x0004);
LCD_WriteReg(0x0038,0x0000);
LCD_WriteReg(0x0039,0x0706);
LCD_WriteReg(0x003c,0x0701);
LCD_WriteReg(0x003d,0x000f);
delay_ms(50);
LCD_WriteReg(0x0050,0x0000); //水平GRAM起始位置
LCD_WriteReg(0x0051,0x00ef); //水平GRAM终止位置
LCD_WriteReg(0x0052,0x0000); //垂直GRAM起始位置
LCD_WriteReg(0x0053,0x013f); //垂直GRAM终止位置
LCD_WriteReg(0x0060,0xa700);
LCD_WriteReg(0x0061,0x0001);
LCD_WriteReg(0x006a,0x0000);
LCD_WriteReg(0x0080,0x0000);
LCD_WriteReg(0x0081,0x0000);
LCD_WriteReg(0x0082,0x0000);
LCD_WriteReg(0x0083,0x0000);
LCD_WriteReg(0x0084,0x0000);
LCD_WriteReg(0x0085,0x0000);
LCD_WriteReg(0x0090,0x0010);
LCD_WriteReg(0x0092,0x0000);
LCD_WriteReg(0x0093,0x0003);
LCD_WriteReg(0x0095,0x0110);
LCD_WriteReg(0x0097,0x0000);
LCD_WriteReg(0x0098,0x0000);
//开启显示设置
LCD_WriteReg(0x0007,0x0133);
LCD_WriteReg(0x0020,0x0000);
LCD_WriteReg(0x0021,0x013f);
}else if(DeviceCode==0x9320||DeviceCode==0x9300)
{
LCD_WriteReg(0x00,0x0000);
LCD_WriteReg(0x01,0x0100); //Driver Output Contral.
LCD_WriteReg(0x02,0x0700); //LCD Driver Waveform Contral.
LCD_WriteReg(0x03,0x1030);//Entry Mode Set.
//LCD_WriteReg(0x03,0x1018); //Entry Mode Set.
LCD_WriteReg(0x04,0x0000); //Scalling Contral.
LCD_WriteReg(0x08,0x0202); //Display Contral 2.(0x0207)
LCD_WriteReg(0x09,0x0000); //Display Contral 3.(0x0000)
LCD_WriteReg(0x0a,0x0000); //Frame Cycle Contal.(0x0000)
LCD_WriteReg(0x0c,(1<<0)); //Extern Display Interface Contral 1.(0x0000)
LCD_WriteReg(0x0d,0x0000); //Frame Maker Position.
LCD_WriteReg(0x0f,0x0000); //Extern Display Interface Contral 2.
delay_ms(50);
LCD_WriteReg(0x07,0x0101); //Display Contral.
delay_ms(50);
LCD_WriteReg(0x10,(1<<12)|(0<<8)|(1<<7)|(1<<6)|(0<<4)); //Power Control 1.(0x16b0)
LCD_WriteReg(0x11,0x0007); //Power Control 2.(0x0001)
LCD_WriteReg(0x12,(1<<8)|(1<<4)|(0<<0)); //Power Control 3.(0x0138)
LCD_WriteReg(0x13,0x0b00); //Power Control 4.
LCD_WriteReg(0x29,0x0000); //Power Control 7.
LCD_WriteReg(0x2b,(1<<14)|(1<<4));
LCD_WriteReg(0x50,0); //Set X Star
//水平GRAM终止位置Set X End.
LCD_WriteReg(0x51,239); //Set Y Star
LCD_WriteReg(0x52,0); //Set Y End.t.
LCD_WriteReg(0x53,319); //
LCD_WriteReg(0x60,0x2700); //Driver Output Control.
LCD_WriteReg(0x61,0x0001); //Driver Output Control.
LCD_WriteReg(0x6a,0x0000); //Vertical Srcoll Control.
LCD_WriteReg(0x80,0x0000); //Display Position? Partial Display 1.
LCD_WriteReg(0x81,0x0000); //RAM Address Start? Partial Display 1.
LCD_WriteReg(0x82,0x0000); //RAM Address End-Partial Display 1.
LCD_WriteReg(0x83,0x0000); //Displsy Position? Partial Display 2.
LCD_WriteReg(0x84,0x0000); //RAM Address Start? Partial Display 2.
LCD_WriteReg(0x85,0x0000); //RAM Address End? Partial Display 2.
LCD_WriteReg(0x90,(0<<7)|(16<<0)); //Frame Cycle Contral.(0x0013)
LCD_WriteReg(0x92,0x0000); //Panel Interface Contral 2.(0x0000)
LCD_WriteReg(0x93,0x0001); //Panel Interface Contral 3.
LCD_WriteReg(0x95,0x0110); //Frame Cycle Contral.(0x0110)
LCD_WriteReg(0x97,(0<<8)); //
LCD_WriteReg(0x98,0x0000); //Frame Cycle Contral.
LCD_WriteReg(0x07,0x0173); //(0x0173)
}else if(DeviceCode==0x5408)
{
LCD_WriteReg(0x01,0x0100);
LCD_WriteReg(0x02,0x0700);//LCD Driving Waveform Contral
LCD_WriteReg(0x03,0x1030);//Entry Mode设置
//指针从左至右自上而下的自动增模式
//Normal Mode(Window Mode disable)
//RGB格式
//16位数据2次传输的8总线设置
LCD_WriteReg(0x04,0x0000); //Scalling Control register
LCD_WriteReg(0x08,0x0207); //Display Control 2
LCD_WriteReg(0x09,0x0000); //Display Control 3
LCD_WriteReg(0x0A,0x0000); //Frame Cycle Control
LCD_WriteReg(0x0C,0x0000); //External Display Interface Control 1
LCD_WriteReg(0x0D,0x0000); //Frame Maker Position
LCD_WriteReg(0x0F,0x0000); //External Display Interface Control 2
delay_ms(20);
//TFT 液晶彩色图像显示方法14
LCD_WriteReg(0x10,0x16B0); //0x14B0 //Power Control 1
LCD_WriteReg(0x11,0x0001); //0x0007 //Power Control 2
LCD_WriteReg(0x17,0x0001); //0x0000 //Power Control 3
LCD_WriteReg(0x12,0x0138); //0x013B //Power Control 4
LCD_WriteReg(0x13,0x0800); //0x0800 //Power Control 5
LCD_WriteReg(0x29,0x0009); //NVM read data 2
LCD_WriteReg(0x2a,0x0009); //NVM read data 3
LCD_WriteReg(0xa4,0x0000);
LCD_WriteReg(0x50,0x0000); //设置操作窗口的X轴开始列
LCD_WriteReg(0x51,0x00EF); //设置操作窗口的X轴结束列
LCD_WriteReg(0x52,0x0000); //设置操作窗口的Y轴开始行
LCD_WriteReg(0x53,0x013F); //设置操作窗口的Y轴结束行
LCD_WriteReg(0x60,0x2700); //Driver Output Control
//设置屏幕的点数以及扫描的起始行
LCD_WriteReg(0x61,0x0001); //Driver Output Control
LCD_WriteReg(0x6A,0x0000); //Vertical Scroll Control
LCD_WriteReg(0x80,0x0000); //Display Position – Partial Display 1
LCD_WriteReg(0x81,0x0000); //RAM Address Start – Partial Display 1
LCD_WriteReg(0x82,0x0000); //RAM address End - Partial Display 1
LCD_WriteReg(0x83,0x0000); //Display Position – Partial Display 2
LCD_WriteReg(0x84,0x0000); //RAM Address Start – Partial Display 2
LCD_WriteReg(0x85,0x0000); //RAM address End – Partail Display2
LCD_WriteReg(0x90,0x0013); //Frame Cycle Control
LCD_WriteReg(0x92,0x0000); //Panel Interface Control 2
LCD_WriteReg(0x93,0x0003); //Panel Interface control 3
LCD_WriteReg(0x95,0x0110); //Frame Cycle Control
LCD_WriteReg(0x07,0x0173);
delay_ms(50);
}
else if(DeviceCode==0x8989)
{
LCD_WriteReg(0x0000,0x0001);//打开晶振
LCD_WriteReg(0x0003,0xA8A4);//0xA8A4
LCD_WriteReg(0x000C,0x0000);
LCD_WriteReg(0x000D,0x080C);
LCD_WriteReg(0x000E,0x2B00);
LCD_WriteReg(0x001E,0x00B0);
LCD_WriteReg(0x0001,0x2B3F);//驱动输出控制320*240 0x6B3F
LCD_WriteReg(0x0002,0x0600);
LCD_WriteReg(0x0010,0x0000);
LCD_WriteReg(0x0011,0x6070); //定义数据格式 16位色 横屏 0x6058
LCD_WriteReg(0x0005,0x0000);
LCD_WriteReg(0x0006,0x0000);
LCD_WriteReg(0x0016,0xEF1C);
LCD_WriteReg(0x0017,0x0003);
LCD_WriteReg(0x0007,0x0233); //0x0233
LCD_WriteReg(0x000B,0x0000);
LCD_WriteReg(0x000F,0x0000); //扫描开始地址
LCD_WriteReg(0x0041,0x0000);
LCD_WriteReg(0x0042,0x0000);
LCD_WriteReg(0x0048,0x0000);
LCD_WriteReg(0x0049,0x013F);
LCD_WriteReg(0x004A,0x0000);
LCD_WriteReg(0x004B,0x0000);
LCD_WriteReg(0x0044,0xEF00);
LCD_WriteReg(0x0045,0x0000);
LCD_WriteReg(0x0046,0x013F);
LCD_WriteReg(0x0030,0x0707);
LCD_WriteReg(0x0031,0x0204);
LCD_WriteReg(0x0032,0x0204);
LCD_WriteReg(0x0033,0x0502);
LCD_WriteReg(0x0034,0x0507);
LCD_WriteReg(0x0035,0x0204);
LCD_WriteReg(0x0036,0x0204);
LCD_WriteReg(0x0037,0x0502);
LCD_WriteReg(0x003A,0x0302);
LCD_WriteReg(0x003B,0x0302);
LCD_WriteReg(0x0023,0x0000);
LCD_WriteReg(0x0024,0x0000);
LCD_WriteReg(0x0025,0x8000);
LCD_WriteReg(0x004f,0); //行首址0
LCD_WriteReg(0x004e,0); //列首址0
}
LCD_LED=1;//点亮背光
LCD_Clear(WHITE);
}
//清屏函数
//Color:要清屏的填充色
void LCD_Clear(u16 Color)
{
u32 index=0;
LCD_SetCursor(0x00,0x0000);//设置光标位置
LCD_WriteRAM_Prepare(); //开始写入GRAM
for(index=0;index<76800;index++)
{
LCD_WR_DATA(Color);
}
}
//在指定区域内填充指定颜色
//区域大小:
// (xend-xsta)*(yend-ysta)
void LCD_Fill(u16 xsta,u16 ysta,u16 xend,u16 yend,u16 color)
{
u16 i,j;
u16 xlen=0;
#if USE_HORIZONTAL==1
xlen=yend-ysta+1;
for(i=xsta;i<=xend;i++)
{
LCD_SetCursor(i,ysta); //设置光标位置
LCD_WriteRAM_Prepare(); //开始写入GRAM
for(j=0;j<xlen;j++)LCD_WR_DATA(color);//设置光标位置
}
#else
xlen=xend-xsta+1;
for(i=ysta;i<=yend;i++)
{
LCD_SetCursor(xsta,i); //设置光标位置
LCD_WriteRAM_Prepare(); //开始写入GRAM
for(j=0;j<xlen;j++)LCD_WR_DATA(color);//设置光标位置
}
#endif
}
//画线
//x1,y1:起点坐标
//x2,y2:终点坐标
void LCD_DrawLine(u16 x1, u16 y1, u16 x2, u16 y2)
{
u16 t;
int xerr=0,yerr=0,delta_x,delta_y,distance;
int incx,incy,uRow,uCol;
delta_x=x2-x1; //计算坐标增量
delta_y=y2-y1;
uRow=x1;
uCol=y1;
if(delta_x>0)incx=1; //设置单步方向
else if(delta_x==0)incx=0;//垂直线
else {incx=-1;delta_x=-delta_x;}
if(delta_y>0)incy=1;
else if(delta_y==0)incy=0;//水平线
else{incy=-1;delta_y=-delta_y;}
if( delta_x>delta_y)distance=delta_x; //选取基本增量坐标轴
else distance=delta_y;
for(t=0;t<=distance+1;t++ )//画线输出
{
LCD_DrawPoint(uRow,uCol);//画点
xerr+=delta_x ;
yerr+=delta_y ;
if(xerr>distance)
{
xerr-=distance;
uRow+=incx;
}
if(yerr>distance)
{
yerr-=distance;
uCol+=incy;
}
}
}
//画矩形
void LCD_DrawRectangle(u16 x1, u16 y1, u16 x2, u16 y2)
{
LCD_DrawLine(x1,y1,x2,y1);
LCD_DrawLine(x1,y1,x1,y2);
LCD_DrawLine(x1,y2,x2,y2);
LCD_DrawLine(x2,y1,x2,y2);
}
//在指定位置画一个指定大小的圆
//(x,y):中心点
//r :半径
void Draw_Circle(u16 x0,u16 y0,u8 r)
{
int a,b;
int di;
a=0;b=r;
di=3-(r<<1); //判断下个点位置的标志
while(a<=b)
{
LCD_DrawPoint(x0-b,y0-a); //3
LCD_DrawPoint(x0+b,y0-a); //0
LCD_DrawPoint(x0-a,y0+b); //1
LCD_DrawPoint(x0-b,y0-a); //7
LCD_DrawPoint(x0-a,y0-b); //2
LCD_DrawPoint(x0+b,y0+a); //4
LCD_DrawPoint(x0+a,y0-b); //5
LCD_DrawPoint(x0+a,y0+b); //6
LCD_DrawPoint(x0-b,y0+a);
a++;
//使用Bresenham算法画圆
if(di<0)di +=4*a+6;
else
{
di+=10+4*(a-b);
b--;
}
LCD_DrawPoint(x0+a,y0+b);
}
}
//在指定位置显示一个字符
//x:0~234
//y:0~308
//num:要显示的字符:" "--->"~"
//size:字体大小 12/16
//mode:叠加方式(1)还是非叠加方式(0)
//在指定位置显示一个字符
//x:0~234
//y:0~308
//num:要显示的字符:" "--->"~"
//size:字体大小 12/16
//mode:叠加方式(1)还是非叠加方式(0)
void LCD_ShowChar(u16 x,u16 y,u8 num,u8 size,u8 mode)
{
#if USE_HORIZONTAL==1
#define MAX_CHAR_POSX 312
#define MAX_CHAR_POSY 232
#else
#define MAX_CHAR_POSX 232
#define MAX_CHAR_POSY 312
#endif
u8 temp;
u8 pos,t;
u16 x0=x;
u16 colortemp=POINT_COLOR;
if(x>MAX_CHAR_POSX||y>MAX_CHAR_POSY)return;
//设置窗口
num=num-' ';//得到偏移后的值
if(!mode) //非叠加方式
{
for(pos=0;pos<size;pos++)
{
if(size==12)temp=asc2_1206[num][pos];//调用1206字体
else temp=asc2_1608[num][pos]; //调用1608字体
for(t=0;t<size/2;t++)
{
if(temp&0x01)POINT_COLOR=colortemp;
else POINT_COLOR=BACK_COLOR;
LCD_DrawPoint(x,y);
temp>>=1;
x++;
}
x=x0;
y++;
}
}else//叠加方式
{
for(pos=0;pos<size;pos++)
{
if(size==12)temp=asc2_1206[num][pos];//调用1206字体
else temp=asc2_1608[num][pos]; //调用1608字体
for(t=0;t<size/2;t++)
{
if(temp&0x01)LCD_DrawPoint(x+t,y+pos);//画一个点
temp>>=1;
}
}
}
 OINT_COLOR=colortemp;
}
//m^n函数
u32 mypow(u8 m,u8 n)
{
u32 result=1;
while(n--)result*=m;
return result;
}
//显示2个数字
//x,y :起点坐标
//len :数字的位数
//size:字体大小
//color:颜色
//num:数值(0~4294967295);
void LCD_ShowNum(u16 x,u16 y,u32 num,u8 len,u8 size)
{
u8 t,temp;
u8 enshow=0;
for(t=0;t<len;t++)
{
temp=(num/mypow(10,len-t-1))%10;
if(enshow==0&&t<(len-1))
{
if(temp==0)
{
LCD_ShowChar(x+(size/2)*t,y,' ',size,0);
continue;
}else enshow=1;
}
LCD_ShowChar(x+(size/2)*t,y,temp+'0',size,0);
}
}
//显示2个数字
//x,y:起点坐标
//size:字体大小
//mode:模式 0,填充模式;1,叠加模式
//num:数值(0~99);
void LCD_Show2Num(u16 x,u16 y,u16 num,u8 len,u8 size,u8 mode)
{
u8 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,mode);
}
}
//显示字符串
//x,y:起点坐标
//*p:字符串起始地址
//用16字体
void LCD_ShowString(u16 x,u16 y,const u8 *p)
{
while(*p!='\0')
{
if(x>MAX_CHAR_POSX){x=0;y+=16;}
if(y>MAX_CHAR_POSY){y=x=0;LCD_Clear(WHITE);}
LCD_ShowChar(x,y,*p,16,0);
x+=8;
p++;
}
}
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发表于 2012-4-1 19:51:06
发表于 2012-4-1 20:35:43
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