tchscr.c
来自「嵌入式系统Lcd触摸屏实验」· C语言 代码 · 共 354 行
C
354 行
#include "../inc/drivers.h"
#include "../inc/bitfield.h"
#include "ucos-ii/ucos_ii.h"
#include "ucos-ii/includes.h"
#include "lib.h"
#include "gpio.h"
#include "inc/drv/spi.h"
#include "inc/sys/tchScr.h"
#include <stdio.h>
#define DPRINTF(...) //printfNULL
#define ADS7843_PIN_PEN (GPIO_MODE_IN | GPIO_PULLUP_EN | GPIO_F5)
#define GPFDAT (*(volatile unsigned *)0x56000054)
#define TCHSCR_IsPenNotDown (GPFDAT&(1<<5))
#define ADS7843_PIN_CS (GPIO_MODE_OUT | GPIO_PULLUP_DIS | GPIO_G12)
#define ADS7843_CTRL_START 0x80
#define ADS7843_GET_X 0x50
#define ADS7843_GET_Y 0x10
#define ADS7843_CTRL_12MODE 0x0
#define ADS7843_CTRL_8MODE 0x8
#define ADS7843_CTRL_SER 0x4
#define ADS7843_CTRL_DFR 0x0
#define ADS7843_CTRL_DISPWD 0x3 // Disable power down
#define ADS7843_CTRL_ENPWD 0x0 // enable power down
#define ADS7843_CMD_X (ADS7843_CTRL_START|ADS7843_GET_X|ADS7843_CTRL_12MODE|ADS7843_CTRL_DFR|ADS7843_CTRL_ENPWD)
#define ADS7843_CMD_Y (ADS7843_CTRL_START|ADS7843_GET_Y|ADS7843_CTRL_12MODE|ADS7843_CTRL_DFR|ADS7843_CTRL_ENPWD)
#define enable_7843() write_gpio_bit(ADS7843_PIN_CS, 0)
#define disable_7843() write_gpio_bit(ADS7843_PIN_CS, 1)
#define ADS7843_SPI_CHANNEL 0
#define GPFCON (*(volatile unsigned *)0x56000050)
#define GPFUP (*(volatile unsigned *)0x56000058)
#define LCDWIDTH 640
#define LCDHEIGHT 480
int TchScr_Xmin=141,TchScr_Xmax=827,
TchScr_Ymin=233,TchScr_Ymax=818;
OS_EVENT *pevent;
int x,y;
U32 mode;
void irq_TCHSCR(void);
//void TchScr_GetScrXY(int *x, int *y,int lable);
__inline static void set7843toIRQmode(void)
{
enable_7843();
SPISend(ADS7843_CMD_X, ADS7843_SPI_CHANNEL);
SPIRecv(ADS7843_SPI_CHANNEL);
SPIRecv(ADS7843_SPI_CHANNEL);
disable_7843();
}
void TchScr_init()
{
set_gpio_ctrl(ADS7843_PIN_CS);
write_gpio_bit(ADS7843_PIN_CS, 1);
SPI_initIO(ADS7843_SPI_CHANNEL);
Set_SIO_mode(ADS7843_SPI_CHANNEL, SPCON_SMOD_INT |
SPCON_ENSCK | SPCON_MSTR |SPCON_CPOL_HIGH |
SPCON_CPHA_FMTA, 33, 2, NULL, NULL, NULL);
GPFCON=0xfbff;
GPFUP=GPFUP&0xdf;
SetISR_Interrupt(IRQ_EINT5,(Interrupt_func_t)irq_TCHSCR, (void *)0);
}
void TchScr_init1()
{
set_gpio_ctrl(ADS7843_PIN_CS);
write_gpio_bit(ADS7843_PIN_CS, 1);
SPI_initIO(ADS7843_SPI_CHANNEL);
Set_SIO_mode(ADS7843_SPI_CHANNEL, SPCON_SMOD_POLL |
SPCON_ENSCK | SPCON_MSTR |SPCON_CPOL_HIGH |
SPCON_CPHA_FMTA, 33, 2, NULL, NULL, NULL);
GPFCON=0xf3ff;
GPFUP=GPFUP&0xdf;
}
#define CLOCK_DELAY() do{int i; for(i=0; i<10; i++);}while(0)
void TchScr_GetScrXY(int *x,int *y)
{
unsigned int temp;
enable_7843();
SPISend (ADS7843_CMD_X, ADS7843_SPI_CHANNEL);
temp=SendReadData(0, ADS7843_SPI_CHANNEL);
temp<<=5;
temp|= (SendReadData(ADS7843_CMD_X, ADS7843_SPI_CHANNEL)>>3);
*x=temp;
temp=SendReadData(0, ADS7843_SPI_CHANNEL);
temp<<=5;
temp|= (SendReadData(ADS7843_CMD_X, ADS7843_SPI_CHANNEL) >>3);
*x+=temp;
temp=SendReadData(0, ADS7843_SPI_CHANNEL);
temp<<=5;
temp|= (SendReadData(ADS7843_CMD_X, ADS7843_SPI_CHANNEL)>>3);
*x+=temp;
temp=SendReadData(0,ADS7843_SPI_CHANNEL);
temp<<=5;
temp|= (SendReadData(ADS7843_CMD_Y, ADS7843_SPI_CHANNEL)>>3);
*x+=temp;
*x>>=4; //x=x/4/4; change to 10bit
temp=SendReadData(0, ADS7843_SPI_CHANNEL);
temp<<=5;
temp|= (SendReadData(ADS7843_CMD_Y, ADS7843_SPI_CHANNEL) >>3);
*y=temp;
temp=SendReadData(0, ADS7843_SPI_CHANNEL);
temp<<=5;
temp|= (SendReadData(ADS7843_CMD_Y, ADS7843_SPI_CHANNEL) >>3);
*y+=temp;
temp=SendReadData(0, ADS7843_SPI_CHANNEL);
temp<<=5;
temp|= (SendReadData(ADS7843_CMD_Y, ADS7843_SPI_CHANNEL) >>3);
*y+=temp;
temp=SendReadData(0, ADS7843_SPI_CHANNEL);
temp<<=5;
temp|= (SendReadData(0, ADS7843_SPI_CHANNEL)>>3);
*y+=temp;
*y>>=4; //y=y/4/4;
disable_7843();
//return 0;
}
U32 TchScr_GetOSXY(int *x, int *y,int lable)
{//获得触摸点坐标并返回触摸动作
static U32 mode=0;
static int oldx,oldy;
int i,j;
for(;;){
if((mode!=TCHSCR_ACTION_DOWN) && (mode!=TCHSCR_ACTION_MOVE)){
if(!TCHSCR_IsPenNotDown){//有触摸动作
TchScr_GetScrXY(x, y);//得到触摸点坐标
for(i=0;i<40;i++){
if(TCHSCR_IsPenNotDown)//抬起
break;
//Delay(100);
hudelay(20);
}
if(i<40){ //在规定的双击时间之内抬起，检测是不是及时按下
for(i=0;i<60;i++){
if(!TCHSCR_IsPenNotDown){
if (i<10) {i=60;break;}//如果单击后很短时间内按下，不视为双击
mode=TCHSCR_ACTION_DBCLICK;
for(j=0;j<40;j++) hudelay(50);//检测到双击后延时，防止拖尾
break;
}
hudelay(20);
// Delay(100);
}
if(i==60) //没有在规定的时间内按下
mode=TCHSCR_ACTION_CLICK;
}
else{ //没有在规定的时间内抬起
mode=TCHSCR_ACTION_DOWN;
}
break;
}
}
else{
if(TCHSCR_IsPenNotDown){ //抬起
mode=TCHSCR_ACTION_UP;
*x=oldx;
*y=oldy;
return mode;
}
else{
TchScr_GetScrXY(x, y);
if(ABS(oldx-*x)>25 ||ABS( oldy-*y)>25){//有移动动作
mode=TCHSCR_ACTION_MOVE;
break;
}
}
}
//Delay(50);
hudelay(10);
}
oldx=*x;
oldy=*y;
if(lable)
{
*x=(*x-TchScr_Xmin)*LCDWIDTH/(TchScr_Xmax-TchScr_Xmin);
*y=(*y-TchScr_Ymin)*LCDHEIGHT/(TchScr_Ymax-TchScr_Ymin);
}
return mode;
}
void TchScr_Clibrate()
{
U32 mode;
int x,y;
Uart_Printf(0,"please touch the screen\n");
drawline(0,10,20,1,0xf818); //左上角。
drawline(10,0,20,0,0xf818);
drawline(0,470,20,1,0xf818); //坐下角
drawline(10,460,20,0,0xf818);
drawline(620,470,20,1,0xf818); //右下角
drawline(630,460,20,0,0xf818);
drawline(620,10,20,1,0xf818); //右上角
drawline(630,0,20,0,0xf818);
for(;;){
mode=TchScr_GetOSXY(&x, &y,0); //不进行坐标转换
switch(mode){
case TCHSCR_ACTION_CLICK:
Uart_Printf(0,"Action=click:x=%d,\ty=%d\n",x,y);
break;
case TCHSCR_ACTION_DBCLICK:
Uart_Printf(0,"Action=double click:x=%d,\ty=%d\n",x,y);
break;
case TCHSCR_ACTION_DOWN:
Uart_Printf(0,"Action=down:x=%d,\ty=%d\n",x,y);
break;
case TCHSCR_ACTION_UP:
Uart_Printf(0,"Action=up:x=%d,\ty=%d\n",x,y);
break;
case TCHSCR_ACTION_MOVE:
Uart_Printf(0,"Action=move:x=%d,\ty=%d\n",x,y);
break;
}
hudelay(1000);
}
}
void getkey(int x,int y)
{
if((x>100)&(x<210)&(y>310)&(y<410))
{
Uart_SendByte(0,'1');
}
if((x>210)&(x<330)&(y>310)&(y<410))
{
Uart_SendByte(0,'2');
}
if((x>330)&(x<455)&(y>310)&(y<410))
{
Uart_SendByte(0,'3');
}
if((x>455)&(x<580)&(y>310)&(y<410))
{
Uart_SendString(0,"F1");
}
if((x>100)&(x<210)&(y>234)&(y<320))
{
Uart_SendByte(0,'4');
}
if((x>215)&(x<325)&(y>234)&(y<320))
{
Uart_SendByte(0,'5');
}
if((x>325)&(x<455)&(y>234)&(y<320))
{
Uart_SendByte(0,'6');
}
if((x>455)&(x<580)&(y>234)&(y<320))
{
Uart_SendString(0,"F2");
}
if((x>100)&(x<210)&(y>144)&(y<234))
{
Uart_SendByte(0,'7');
}
if((x>215)&(x<325)&(y>144)&(y<234))
{
Uart_SendByte(0,'8');
}
if((x>325)&(x<455)&(y>144)&(y<234))
{
Uart_SendByte(0,'9');
}
if((x>455)&(x<580)&(y>144)&(y<234))
{
Uart_SendString(0,"F3");
}
if((x>100)&(x<210)&(y>65)&(y<155))
{
Uart_SendByte(0,'0');
}
if((x>215)&(x<325)&(y>65)&(y<155))
{
Uart_SendByte(0,'*');
}
if((x>325)&(x<455)&(y>65)&(y<155))
{
Uart_SendByte(0,'#');
}
if((x>455)&(x<580)&(y>15)&(y<155))
{
Uart_SendString(0,"F4");
}
}
void irq_TCHSCR(void)
{
OSMboxPost(pevent,(void *)0);
}
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