基于STM32F407的ILI9341 软SPI驱动 Keil 篇(兼容正点原子)
皇甫高阳
基于STM32F407的ILI9341 软SPI驱动 Keil 篇(兼容正点原子)
最近普中的老ILI9325显示屏光荣下岗,网淘到普中转原子哥系列并口屏无法点亮，查询原理图发现背光显示(BLK)引脚不兼容，比较郁闷只能参考资料自己写驱动代码,做了些小改动尽量兼容原子哥其他硬件。
首先,先计算刷新频率：软件模拟SPI速率100M，使用320240分辨率彩色显示屏，16位RGB565；理论最高刷新频率=100M/(320240*16)≈20HZ
核心IO驱动程序如下：
STM32_模拟SPI读写一个字节：
void SPI_WriteData(u8 Data)
{
unsigned char i=0;
for(i=8;i>0;i--)
{
if(Data&0x80)
LCD_SDA_SET;
else LCD_SDA_CLR;
LCD_SCL_CLR;
LCD_SCL_SET;
Data<<=1;
}
}
STM32_模拟SPI读写指令：
void Lcd_WriteIndex(u8 Index)
{
LCD_CS_CLR;
LCD_RS_CLR;
SPI_WriteData(Index);
LCD_CS_SET;
}
STM32_模拟SPI读写数据：
void Lcd_WriteData(u8 Data)
{
LCD_CS_CLR;
LCD_RS_SET;
SPI_WriteData(Data);
LCD_CS_SET;
}
STM32_模拟SPI写一个16位数据(主要填充色点颜色)：
void LCD_WriteData_16Bit(uint16_t Data)
{
LCD_CS_CLR;
LCD_RS_SET;
SPI_WriteData(Data>>8);
SPI_WriteData(Data&0xFF);
LCD_CS_SET;
}
下面以原子哥的汉子显示为例（Lcd_Driver.c及Lcd_Driver.h） Lcd_Driver函数如下：
#include "Lcd_Driver.h"
#include "font.h"
#include "delay.h"
//±¾²âÊÔ³ÌÐòʹÓõÄÊÇÄ£ÄâSPI½Ó¿ÚÇý¶¯
//¿É×ÔÓɸü¸Ä½Ó¿ÚIOÅäÖã¬Ê¹ÓÃÈÎÒâ×îÉÙ4 IO¼´¿ÉÍê³É±¾¿îÒº¾§Çý¶¯ÏÔʾ
/******************************************************************************
½Ó¿Ú¶¨ÒåÔÚLcd_Driver.hÄÚ¶¨Ò壬Çë¸ù¾Ý½ÓÏßÐ޸IJ¢ÐÞ¸ÄÏàÓ¦IO³õʼ»¯LCD_GPIO_Init()
#define LCD_BLK //PB1 //±³¹â¿ØÖÆ //FSMC D9 PE12
#define LCD_RS //PC5 //ÃüÁîÊý¾ÝÇл» //FSMC D12 PE15
#define LCD_CS //PB12 //Ƭѡ //FSMC D14 PD9
#define LCD_SDO/RST //PB14 //¸´Î» //FSMC D13 PD8
#define LCD_SCL //PB13 //ʱÖÓÏß //FSMC D10 PE13
#define LCD_SDA //PB15 //Êý¾ÝÏß //FSMC D11 PE14
#define LCD_MISO //FSMC 8 PE11
*******************************************************************************/
//LCDµÄ»±ÊÑÕÉ«ºÍ±³¾°É«
u16 POINT_COLOR=0x0000; //»±ÊÑÕÉ«
u16 BACK_COLOR=0xFFFF; //±³¾°É«
//¹ÜÀíLCDÖØÒª²ÎÊý
//ĬÈÏΪÊúÆÁ
_lcd_dev lcddev;
//Òº¾§IO³õʼ»¯ÅäÖÃ
void LCD_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_GPIOD | RCC_AHB1Periph_GPIOE ,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;//ÆÕͨÊä³öģʽ
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//ÍÆÍìÊä³ö
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100MHz
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//ÉÏÀ
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;//ÆÕͨÊä³öģʽ
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//ÍÆÍìÊä³ö
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100MHz
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//ÉÏÀ
GPIO_Init(GPIOE, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;//ÆÕͨÊäÈëģʽ
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100M
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//ÉÏÀ
GPIO_Init(GPIOE, &GPIO_InitStructure); //³õʼ»¯GPIOE11
LCD_BLK_SET;//¿ªÆô±³¹â
}
/****************************************************************************
* Ãû ³Æ£ºvoid SPIv_WriteData(u8 Data)
* ¹¦ ÄÜ£ºSTM32_Ä£ÄâSPIдһ¸ö×Ö½ÚÊý¾Ýµ×²ãº¯Êý
* Èë¿Ú²ÎÊý£ºData
* ³ö¿Ú²ÎÊý£ºÎÞ
* ˵ Ã÷£ºSTM32_Ä£ÄâSPI¶Áдһ¸ö×Ö½ÚÊý¾Ýµ×²ãº¯Êý
****************************************************************************/
void SPI_WriteData(u8 Data)
{
unsigned char i=0;
for(i=8;i>0;i--)
{
if(Data&0x80)
LCD_SDA_SET; //Êä³öÊý¾Ý
else LCD_SDA_CLR;
LCD_SCL_CLR;
LCD_SCL_SET;
Data<<=1;
}
}
/****************************************************************************
* ¶ÁLCDÊý¾Ý
* ·µ»ØÖµ:¶Áµ½µÄÖµ
* Èë¿Ú²ÎÊý£ºdat ¼Ä´æÆ÷Êý¾Ý
* ³ö¿Ú²ÎÊý£ºÎÞ
* ˵ Ã÷£ºÏò¿ØÖÆÆ÷Ö¸¶¨µØַдÈëÊý¾Ý£¬µ÷ÓÃÇ°ÐèÏÈд¼Ä´æÆ÷µØÖ·£¬ÄÚ²¿º¯Êý
* µ÷Ó÷½·¨:LCD_RD_DATA()
****************************************************************************/
u16 LCD_RD_DATA(void)
{
u16 Data; //u16
unsigned char i=0;
LCD_SCL_CLR;
if(LCD_MOSI==1) Data=0x1;
else Data=0x0;
LCD_SCL_SET;
for(i=15;i>0;i--)
{
LCD_SCL_CLR;
if(LCD_MOSI==1) Data=Data<<1|0x1;
else Data=Data<<1|0x0;
LCD_SCL_SET;
}
return Data;
}
/****************************************************************************
* Ãû ³Æ£ºvoid Lcd_WriteIndex(u8 idx)
* ¹¦ ÄÜ£ºÐ´ ST7735S ¿ØÖÆÆ÷¼Ä´æÆ÷µØÖ·
* Èë¿Ú²ÎÊý£ºidx ¼Ä´æÆ÷µØÖ·
* ³ö¿Ú²ÎÊý£ºÎÞ
* ˵ Ã÷£ºµ÷ÓÃÇ°ÐèÏÈÑ¡ÖпØÖÆÆ÷£¬ÄÚ²¿º¯Êý
* µ÷Ó÷½·¨£ºLcd_WriteIndex(0x00);
****************************************************************************/
void Lcd_WriteIndex(u8 Index)
{
//SPI дÃüÁîʱÐò¿ªÊ¼
LCD_CS_CLR;
LCD_RS_CLR; //дÈëÃüÁî
SPI_WriteData(Index);
LCD_CS_SET;
}
/****************************************************************************
* Ãû ³Æ£ºvoid Lcd_WriteData(u8 dat)
* ¹¦ ÄÜ£ºÐ´ ST7735S ¼Ä´æÆ÷Êý¾Ý
* Èë¿Ú²ÎÊý£ºdat ¼Ä´æÆ÷Êý¾Ý
* ³ö¿Ú²ÎÊý£ºÎÞ
* ˵ Ã÷£ºÏò¿ØÖÆÆ÷Ö¸¶¨µØַдÈëÊý¾Ý£¬µ÷ÓÃÇ°ÐèÏÈд¼Ä´æÆ÷µØÖ·£¬ÄÚ²¿º¯Êý
* µ÷Ó÷½·¨£ºLcd_WriteData(0x30)
****************************************************************************/
void Lcd_WriteData(u8 Data)
{
LCD_CS_CLR;
LCD_RS_SET; //дÈëÊý¾Ý
SPI_WriteData(Data);
LCD_CS_SET;
}
//д¼Ä´æÆ÷º¯Êý
void Lcd_WriteReg(u8 Index,u8 Data)
{
Lcd_WriteIndex(Index);
Lcd_WriteData(Data);
}
//ÏòÒº¾§ÆÁдһ¸ö16λÊý¾Ý
void LCD_WriteData_16Bit(uint16_t Data)
{
LCD_CS_CLR;
LCD_RS_SET;
SPI_WriteData(Data>>8); //дÈë¸ß8λÊý¾Ý
SPI_WriteData(Data&0xFF); //дÈëµÍ8λÊý¾Ý
LCD_CS_SET;
}
//µ±mdk -O1ʱ¼äÓÅ»¯Ê±ÐèÒªÉèÖÃ
//ÑÓʱi
void opt_delay(u8 i)
{
while(i--);
}
//Òº¾§ÆÁ¸´Î»º¯Êý
void Lcd_Reset(void)
{
LCD_RST_CLR;
delay_ms(20);
LCD_RST_SET;
delay_ms(20);
}
//ÉèÖÃLCD²ÎÊý
//·½±ã½øÐкáÊúÆÁģʽÇл»
void LCD_SetParam(void)
{
lcddev.wramcmd=0x2C;
#if USE_HORIZONTAL==1 //ʹÓúáÆÁ
lcddev.dir=1;//ºáÆÁ
lcddev.width=320;
lcddev.height=240;
lcddev.setxcmd=0x2A;
lcddev.setycmd=0x2B;
Lcd_WriteReg(0x36,0xA0);
#else//ÊúÆÁ
lcddev.dir=0;//ÊúÆÁ
lcddev.width=240;
lcddev.height=320;
lcddev.setxcmd=0x2A;
lcddev.setycmd=0x2B;
Lcd_WriteReg(0x36,0xC0);
#endif
}
/*************************************************
º¯ÊýÃû£ºLCD_Set_Region
¹¦ÄÜ£ºÉèÖÃlcdÏÔʾÇøÓò£¬ÔÚ´ËÇøÓòдµãÊý¾Ý×Ô¶¯»»ÐÐ
Èë¿Ú²ÎÊý£ºxyÆðµãºÍÖÕµã,Y_IncMode±íʾÏÈ×ÔÔöyÔÙ×ÔÔöx
·µ»ØÖµ£ºÎÞ
*************************************************/
void Lcd_SetRegion(u16 x_start,u16 y_start,u16 x_end,u16 y_end)
{
#if USE_HORIZONTAL==1 //ʹÓúáÆÁ
Lcd_WriteIndex(0x2a);
Lcd_WriteData(x_start>>8);
Lcd_WriteData(x_start&0xFF);
Lcd_WriteData(x_end>>8);
Lcd_WriteData(x_end&0xFF);
Lcd_WriteIndex(0x2b);
Lcd_WriteData(y_start>>8);
Lcd_WriteData(y_start&0xFF);
Lcd_WriteData(y_end>>8);
Lcd_WriteData(y_end&0xFF);
#else
Lcd_WriteIndex(0x2a);
Lcd_WriteData(x_start>>8);
Lcd_WriteData(x_start&0xFF);
Lcd_WriteData(x_end>>8);
Lcd_WriteData(x_end&0xFF);
Lcd_WriteIndex(0x2b);
Lcd_WriteData(y_start>>8);
Lcd_WriteData(y_start&0xFF);
Lcd_WriteData(y_end>>8);
Lcd_WriteData(y_end&0xFF);
#endif
Lcd_WriteIndex(0x2c); //¿ªÊ¼Ð´ÈëGRAM
}
/*************************************************
º¯ÊýÃû£ºLCD_Set_XY
¹¦ÄÜ£ºÉèÖÃlcdÏÔʾÆðʼµã
Èë¿Ú²ÎÊý£ºxy×ø±ê
·µ»ØÖµ£ºÎÞ
*************************************************/
void LCD_SetCursor(u16 x,u16 y)
{
//Lcd_SetRegion(x,y,x,y);
#if USE_HORIZONTAL==1 //ʹÓúáÆÁ
Lcd_SetRegion(x+1,y+2,x+1,y+2);
#else
Lcd_SetRegion(x+2,y+1,x+2,y+1);
#endif
}
//»µã
//x,y:×ø±ê
//POINT_COLOR:´ËµãµÄÑÕÉ«
void LCD_DrawPoint(u16 x,u16 y)
{
LCD_SetCursor(x,y); //ÉèÖùâ±êλÖÃ
LCD_WriteData_16Bit(POINT_COLOR);
}
/*************************************************
º¯ÊýÃû£ºLCD_DrawPoint
¹¦ÄÜ£º»Ò»¸öµã
Èë¿Ú²ÎÊý£ºÎÞ
·µ»ØÖµ£ºÎÞ
*************************************************/
void LCD_Fast_DrawPoint(u16 x,u16 y,u16 Data)
{
//Lcd_SetRegion(x,y,x+1,y+1);
#if USE_HORIZONTAL==1 //ʹÓúáÆÁ
Lcd_SetRegion(x+1,y+2,x+2,y+3);
#else
Lcd_SetRegion(x+2,y+1,x+3,y+2);
#endif
LCD_WriteData_16Bit(Data);
}
/*****************************************
º¯Êý¹¦ÄÜ£º¶ÁTFTijһµãµÄÑÕÉ«
³ö¿Ú²ÎÊý£ºcolor µãÑÕÉ«Öµ
******************************************/
//unsigned int Lcd_ReadPoint(u16 x,u16 y)
//{
// unsigned int Data;
// Lcd_SetXY(x,y);
// Lcd_WriteData(Data);
// return Data;
//}
/*************************************************
º¯ÊýÃû£ºLcd_Clear
¹¦ÄÜ£ºÈ«ÆÁÇåÆÁº¯Êý
Èë¿Ú²ÎÊý£ºÌî³äÑÕÉ«COLOR
·µ»ØÖµ£ºÎÞ
*************************************************/
void LCD_Clear(u16 Color)
{
unsigned int i,m;
#if USE_HORIZONTAL==1 //ʹÓúáÆÁ
//Lcd_SetRegion(2,1,X_MAX_PIXEL+1,Y_MAX_PIXEL);
Lcd_SetRegion(1,2,X_MAX_PIXEL,Y_MAX_PIXEL+1);
Lcd_WriteIndex(0x2C);
for(i=0;i<Y_MAX_PIXEL;i++)
for(m=0;m<X_MAX_PIXEL;m++)
{
LCD_WriteData_16Bit(Color);
}
#else
Lcd_SetRegion(0,0,X_MAX_PIXEL,Y_MAX_PIXEL);
Lcd_WriteIndex(0x2C);
for(i=0;i<Y_MAX_PIXEL;i++)
for(m=0;m<X_MAX_PIXEL;m++)
{
LCD_WriteData_16Bit(Color);
}
#endif
}
void LCD_Init(void)
{
LCD_GPIO_Init(); //ʹÓÃÄ£ÄâSPI ³õʼ»¯IO½Ó¿Ú
Lcd_Reset(); //¸´Î»Òº¾§ÆÁ
Lcd_WriteIndex(0x11);//Sleep exit
delay_ms(20);
Lcd_WriteIndex(0xCF);
Lcd_WriteData(0x00);
Lcd_WriteData(0xC1);
Lcd_WriteData(0X30);
Lcd_WriteIndex(0xED);
Lcd_WriteData(0x64);
Lcd_WriteData(0x03);
Lcd_WriteData(0X12);
Lcd_WriteData(0X81);
Lcd_WriteIndex(0xE8);
Lcd_WriteData(0x85);
Lcd_WriteData(0x10);
Lcd_WriteData(0x7A);
Lcd_WriteIndex(0xCB);
Lcd_WriteData(0x39);
Lcd_WriteData(0x2C);
Lcd_WriteData(0x00);
Lcd_WriteData(0x34);
Lcd_WriteData(0x02);
Lcd_WriteIndex(0xF7);
Lcd_WriteData(0x20);
Lcd_WriteIndex(0xEA);
Lcd_WriteData(0x00);
Lcd_WriteData(0x00);
Lcd_WriteIndex(0xC0); //Power control
Lcd_WriteData(0x1B); //VRH[5:0]
Lcd_WriteIndex(0xC1); //Power control
Lcd_WriteData(0x01); //SAP[2:0];BT[3:0]
Lcd_WriteIndex(0xC5); //VCM control
Lcd_WriteData(0x30); //3F
Lcd_WriteData(0x30); //3C
Lcd_WriteIndex(0xC7); //VCM control2
Lcd_WriteData(0XB7);
Lcd_WriteIndex(0x36); // Memory Access Control
Lcd_WriteData(0x48);
Lcd_WriteIndex(0x3A);
Lcd_WriteData(0x55);
Lcd_WriteIndex(0xB1);
Lcd_WriteData(0x00);
Lcd_WriteData(0x1A);
Lcd_WriteIndex(0xB6); // Display Function Control
Lcd_WriteData(0x0A);
Lcd_WriteData(0xA2);
Lcd_WriteIndex(0xF2); // 3Gamma Function Disable
Lcd_WriteData(0x00);
Lcd_WriteIndex(0x26); //Gamma curve selected
Lcd_WriteData(0x01);
Lcd_WriteIndex(0xE0); //Set Gamma
Lcd_WriteData(0x0F);
Lcd_WriteData(0x2A);
Lcd_WriteData(0x28);
Lcd_WriteData(0x08);
Lcd_WriteData(0x0E);
Lcd_WriteData(0x08);
Lcd_WriteData(0x54);
Lcd_WriteData(0XA9);
Lcd_WriteData(0x43);
Lcd_WriteData(0x0A);
Lcd_WriteData(0x0F);
Lcd_WriteData(0x00);
Lcd_WriteData(0x00);
Lcd_WriteData(0x00);
Lcd_WriteData(0x00);
Lcd_WriteIndex(0XE1); //Set Gamma
Lcd_WriteData(0x00);
Lcd_WriteData(0x15);
Lcd_WriteData(0x17);
Lcd_WriteData(0x07);
Lcd_WriteData(0x11);
Lcd_WriteData(0x06);
Lcd_WriteData(0x2B);
Lcd_WriteData(0x56);
Lcd_WriteData(0x3C);
Lcd_WriteData(0x05);
Lcd_WriteData(0x10);
Lcd_WriteData(0x0F);
Lcd_WriteData(0x3F);
Lcd_WriteData(0x3F);
Lcd_WriteData(0x0F);
Lcd_WriteIndex(0x2B);
Lcd_WriteData(0x00);
Lcd_WriteData(0x00);
Lcd_WriteData(0x01);
Lcd_WriteData(0x3f);
Lcd_WriteIndex(0x2A);
Lcd_WriteData(0x00);
Lcd_WriteData(0x00);
Lcd_WriteData(0x00);
Lcd_WriteData(0xef);
Lcd_WriteIndex(0x11); //Exit Sleep
delay_ms(20);
Lcd_WriteIndex(0x29); //display on
LCD_SetParam();//ÉèÖÃLCD²ÎÊý
}
//LCD¿ªÆôÏÔʾ
void LCD_DisplayOn(void)
{
Lcd_WriteIndex(0X29); //¿ªÆôÏÔʾ
}
//LCD¹Ø±ÕÏÔʾ
void LCD_DisplayOff(void)
{
Lcd_WriteIndex(0X28); //¹Ø±ÕÏÔʾ
}
//ÔÚÖ¸¶¨ÇøÓòÄÚÌî³äµ¥¸öÑÕÉ«
//(sx,sy),(ex,ey):Ìî³ä¾ØÐζԽÇ×ø±ê,ÇøÓò´óСΪ:(ex-sx+1)*(ey-sy+1)
//color:ÒªÌî³äµÄÑÕÉ«
void LCD_Fill(u16 sx,u16 sy,u16 ex,u16 ey,u16 color)
{
u16 i,j;
u16 xlen=0;
xlen=ex-sx+1;
for(i=sy;i<=ey;i++)
{
LCD_SetCursor(sx,i); //ÉèÖùâ±êλÖÃ
for(j=0;j<xlen;j++) LCD_WriteData_16Bit(color); //ÏÔʾÑÕÉ«
}
}
//»Ïß
//x1,y1:Æðµã×ø±ê
//x2,y2:ÖÕµã×ø±ê
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; //¼ÆËã×ø±êÔöÁ¿
delta_y=y2-y1;
uRow=x1;
uCol=y1;
if(delta_x>0)incx=1; //ÉèÖõ¥²½·½Ïò
else if(delta_x==0)incx=0;//´¹Ö±Ïß
else {incx=-1;delta_x=-delta_x;}
if(delta_y>0)incy=1;
else if(delta_y==0)incy=0;//ˮƽÏß
else{incy=-1;delta_y=-delta_y;}
if( delta_x>delta_y)distance=delta_x; //Ñ¡È¡»ù±¾ÔöÁ¿×ø±êÖá
else distance=delta_y;
for(t=0;t<=distance+1;t++ )//»ÏßÊä³ö
{
LCD_DrawPoint(uRow,uCol);//»µã
xerr+=delta_x ;
yerr+=delta_y ;
if(xerr>distance)
{
xerr-=distance;
uRow+=incx;
}
if(yerr>distance)
{
yerr-=distance;
uCol+=incy;
}
}
}
//»¾ØÐÎ
//(x1,y1),(x2,y2):¾ØÐεĶԽÇ×ø±ê
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);
}
//ÔÚÖ¸¶¨Î»Öûһ¸öÖ¸¶¨´óСµÄÔ²
//(x,y):ÖÐÐĵã
//r :°ë¾¶
void LCD_Draw_Circle(u16 x0,u16 y0,u8 r)
{
int a,b;
int di;
a=0;b=r;
di=3-(r<<1); //ÅжÏϸöµãλÖõıêÖ¾
while(a<=b)
{
LCD_DrawPoint(x0+a,y0-b); //5
LCD_DrawPoint(x0+b,y0-a); //0
LCD_DrawPoint(x0+b,y0+a); //4
LCD_DrawPoint(x0+a,y0+b); //6
LCD_DrawPoint(x0-a,y0+b); //1
LCD_DrawPoint(x0-b,y0+a);
LCD_DrawPoint(x0-a,y0-b); //2
LCD_DrawPoint(x0-b,y0-a); //7
a++;
//ʹÓÃBresenhamËã·¨»Ô²
if(di<0)di +=4*a+6;
else
{
di+=10+4*(a-b);
b--;
}
}
}
//ÔÚÖ¸¶¨Î»ÖÃÏÔʾһ¸ö×Ö·û
//x,y:Æðʼ×ø±ê
//num:ÒªÏÔʾµÄ×Ö·û:" "--->"~"
//size:×ÖÌå´óС 12/16/24
//mode:µþ¼Ó·½Ê½(1)»¹ÊǷǵþ¼Ó·½Ê½(0)
void LCD_ShowChar(u16 x,u16 y,u8 num,u8 size,u8 mode)
{
u8 temp,t1,t;
u16 y0=y;
u8 csize=(size/8+((size%8)?1:0))*(size/2); //µÃµ½×ÖÌåÒ»¸ö×Ö·û¶ÔÓ¦µãÕó¼¯ËùÕ¼µÄ×Ö½ÚÊý
num=num-' ';//µÃµ½Æ«ÒƺóµÄÖµ£¨ASCII×Ö¿âÊÇ´Ó¿Õ¸ñ¿ªÊ¼È¡Ä££¬ËùÒÔ-' '¾ÍÊǶÔÓ¦×Ö·ûµÄ×ֿ⣩
for(t=0;t<csize;t++)
{
if(size==12)temp=asc2_1206[num][t]; //µ÷ÓÃ1206×ÖÌå
else if(size==16)temp=asc2_1608[num][t]; //µ÷ÓÃ1608×ÖÌå
else if(size==24)temp=asc2_2412[num][t]; //µ÷ÓÃ2412×ÖÌå
else return; //ûÓеÄ×Ö¿â
for(t1=0;t1<8;t1++)
{
if(temp&0x80)LCD_Fast_DrawPoint(x,y,POINT_COLOR);
else if(mode==0)LCD_Fast_DrawPoint(x,y,BACK_COLOR);
temp<<=1;
y++;
if(y>=lcddev.height)return; //³¬ÇøÓòÁË
if((y-y0)==size)
{
y=y0;
x++;
if(x>=lcddev.width)return; //³¬ÇøÓòÁË
break;
}
}
}
}
//m^nº¯Êý
//·µ»ØÖµ:m^n´Î·½.
u32 LCD_Pow(u8 m,u8 n)
{
u32 result=1;
while(n--)result*=m;
return result;
}
//ÏÔʾÊý×Ö,¸ßλΪ0,Ôò²»ÏÔʾ
//x,y :Æðµã×ø±ê
//len :Êý×ÖµÄλÊý
//size:×ÖÌå´óС
//color:ÑÕÉ«
//num:ÊýÖµ(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/LCD_Pow(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);
}
}
//ÏÔʾÊý×Ö,¸ßλΪ0,»¹ÊÇÏÔʾ
//x,y:Æðµã×ø±ê
//num:ÊýÖµ(0~999999999);
//len:³¤¶È(¼´ÒªÏÔʾµÄλÊý)
//size:×ÖÌå´óС
//mode:
//[7]:0,²»Ìî³ä;1,Ìî³ä0.
//[6:1]:±£Áô
//[0]:0,·Çµþ¼ÓÏÔʾ;1,µþ¼ÓÏÔʾ.
void LCD_ShowxNum(u16 x,u16 y,u32 num,u8 len,u8 size,u8 mode)
{
u8 t,temp;
u8 enshow=0;
for(t=0;t<len;t++)
{
temp=(num/LCD_Pow(10,len-t-1))%10;
if(enshow==0&&t<(len-1))
{
if(temp==0)
{
if(mode&0X80)LCD_ShowChar(x+(size/2)*t,y,'0',size,mode&0X01);
else LCD_ShowChar(x+(size/2)*t,y,' ',size,mode&0X01);
continue;
}else enshow=1;
}
LCD_ShowChar(x+(size/2)*t,y,temp+'0',size,mode&0X01);
}
}
//ÏÔʾ×Ö·û´®
//x,y:Æðµã×ø±ê
//width,height:ÇøÓò´óС
//size:×ÖÌå´óС
//*p:×Ö·û´®ÆðʼµØÖ·
void LCD_ShowString(u16 x,u16 y,u16 width,u16 height,u8 size,u8 *p)
{
u8 x0=x;
width+=x;
height+=y;
while((*p<='~')&&(*p>=' '))//ÅжÏÊDz»ÊÇ·Ç·¨×Ö·û!
{
if(x>=width){x=x0;y+=size;}
if(y>=height)break;//Í˳ö
LCD_ShowChar(x,y,*p,size,0);
x+=size/2;
p++;
}
}
//¶ÁÈ¡¸öijµãµÄÑÕÉ«Öµ
//x,y:×ø±ê
//·µ»ØÖµ:´ËµãµÄÑÕÉ«
u16 LCD_ReadPoint(u16 x,u16 y)
{
u16 r=0,g=0,b=0;
if(x>=lcddev.width||y>=lcddev.height)return 0; //³¬¹ýÁË·¶Î§,Ö±½Ó·µ»Ø
LCD_SetCursor(x,y);
Lcd_WriteIndex(0X2E); //9341 ·¢ËͶÁGRAMÖ¸Áî
r=LCD_RD_DATA(); //dummy Read
opt_delay(2);
r=LCD_RD_DATA(); //ʵ¼Ê×ø±êÑÕÉ«
opt_delay(2);
b=LCD_RD_DATA();
g=r&0XFF; //¶ÔÓÚ9341/5310/5510,µÚÒ»´Î¶ÁÈ¡µÄÊÇRGµÄÖµ,RÔÚÇ°,GÔÚºó,¸÷Õ¼8λ
g<<=8;
return (((r>>11)<<11)|((g>>10)<<5)|(b>>11)); //ILI9341/NT35310/NT35510ÐèÒª¹«Ê½×ª»»Ò»ÏÂ
}
//ÔÚÖ¸¶¨ÇøÓòÄÚÌî³äÖ¸¶¨ÑÕÉ«¿é
//(sx,sy),(ex,ey):Ìî³ä¾ØÐζԽÇ×ø±ê,ÇøÓò´óСΪ:(ex-sx+1)*(ey-sy+1)
//color:ÒªÌî³äµÄÑÕÉ«
void LCD_Color_Fill(u16 sx,u16 sy,u16 ex,u16 ey,u16 *color)
{
u16 height,width;
u16 i,j;
width=ex-sx+1; //µÃµ½Ìî³äµÄ¿í¶È
height=ey-sy+1; //¸ß¶È
for(i=0;i<height;i++)
{
LCD_SetCursor(sx,sy+i); //ÉèÖùâ±êλÖÃ
for(j=0;j<width;j++)
{
LCD_WriteData_16Bit(color[i*width+j]);
}
}
}
乱码请自觉忽略(因Keil版本问题)，附件以原子哥汉子显示为例，感兴趣的朋友可进行下载。
https://download.csdn.net/download/leotian966/12888996
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