touch.c

#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <wiringPi.h>
#include <wiringPiSPI.h>
#include "tft_lib.h"
#include "xpt2046.h"
#include "driver/ili9341.h"

#define SPI_CHANNEL 0 // /dev/spidev0.0
//#define SPI_CHANNEL 1 // /dev/spidev0.1
#define GPIO_PEN 6
#define _DEBUG_ 0

FontxFile fxG32[2];
FontxFile fxM32[2];
FontxFile fxG24[2];
FontxFile fxM24[2];
FontxFile fxG16[2];
FontxFile fxM16[2];

TouchInfo tinfo;

int main(int argc, char **argv){
	int i,j;
	uint16_t xpos,ypos;
	uint16_t color;
	uint8_t utf[64];

	int XMAX,YMAX;
	int XMAX2,YMAX2;

	if (wiringPiSPISetup(SPI_CHANNEL, 500000) < 0) {
		printf("wiringPiSPISetup failed:\n");
		return -1;
	}

	if (wiringPiSetup() < 0) {
		printf("wiringPiSetup failed:\n");
		return -1;
	}
	pinMode(GPIO_PEN,INPUT);


	char base[128];
	strcpy(base, argv[0]);
	for(i=strlen(base);i>0;i--) {
		if (base[i-1] == '/') {
			base[i] = 0;
			break;
		}
	}
	//printf("base=%s\n",base);

	// You can change font file
	// 32Dot Gothic
	char G32[2][128];
	strcpy(G32[0],base);
	strcpy(G32[1],base);
	strcat(G32[0],"fontx/ILGH32XB.FNT");
	strcat(G32[1],"fontx/ILGZ32XB.FNT");
	//printf("%s\n",G32[0]);
	//printf("%s\n",G32[1]);
	Fontx_init(fxG32,G32[0],G32[1]);

	// 32Dot Mincho
	char M32[2][128];
	strcpy(M32[0],base);
	strcpy(M32[1],base);
	strcat(M32[0],"fontx/ILMH32XF.FNT");
	strcat(M32[1],"fontx/ILMZ32XF.FNT");
	//printf("%s\n",M32[0]);
	//printf("%s\n",M32[1]);
	Fontx_init(fxM32,M32[0],M32[1]);

	// 24Dot Gothic
	char G24[2][128];
	strcpy(G24[0],base);
	strcpy(G24[1],base);
	strcat(G24[0],"fontx/ILGH24XB.FNT");
	strcat(G24[1],"fontx/ILGZ24XB.FNT");
	//printf("%s\n",G24[0]);
	//printf("%s\n",G24[1]);
	Fontx_init(fxG24,G24[0],G24[1]);

	// 24Dot Mincho
	char M24[2][128];
	strcpy(M24[0],base);
	strcpy(M24[1],base);
	strcat(M24[0],"fontx/ILMH24XF.FNT");
	strcat(M24[1],"fontx/ILMZ24XF.FNT");
	//printf("%s\n",M24[0]);
	//printf("%s\n",M24[1]);
	Fontx_init(fxM24,M24[0],M24[1]);

#if 0
	// 32Dot Gothic
	Fontx_init(fxG32,"./fontx/ILGH32XB.FNT","./fontx/ILGZ32XB.FNT");
	// 32Dot Mincho
	Fontx_init(fxM32,"./fontx/ILMH32XF.FNT","./fontx/ILMZ32XF.FNT");
	// 24Dot Gothic
	Fontx_init(fxG24,"./fontx/ILGH24XB.FNT","./fontx/ILGZ24XB.FNT");
	// 24Dot Mincho
	Fontx_init(fxM24,"./fontx/ILMH24XF.FNT","./fontx/ILMZ24XF.FNT");
	// 16Dot Gothic
	Fontx_init(fxG16,"./fontx/ILGH16XB.FNT","./fontx/ILGZ16XB.FNT");
	// 16Dot Mincho
	Fontx_init(fxM16,"./fontx/ILMH16XB.FNT","./fontx/ILMZ16XF.FNT");
#endif

	char ppath[128];
	strcpy(ppath,base);
	strcat(ppath,"pin.conf");
	//printf("ppath=%s\n",ppath);
	struct stat buffer;
	if (stat(ppath, &buffer) != 0) {
		printf("pin.conf [%s] not found\n",ppath);
		return 1;
	}

	xptInit(&tinfo);

	TFT_t dev;
	lcdInterface(&dev, ppath);
	lcdReset(&dev);
	XMAX = 240;
	YMAX = 320;
	ili9341_lcdInit(&dev, XMAX, YMAX, 0, 0);

	XMAX2 = XMAX - 1;
	YMAX2 = YMAX - 1;

	//drawString
	lcdFillScreen(&dev, WHITE);
	lcdSetFontDirection(&dev, DIRECTION90);
	xpos = 180;
	ypos = YMAX2-(32*1);
	for (i=0;i<5;i++) {
		lcdDrawRect(&dev, xpos-8, ypos+16, xpos+40, ypos-32, BLACK);
		xptSetPoint(&tinfo, xpos-8 ,ypos+16 ,xpos+40, ypos-32, i);
		xptDump(&tinfo);
		color = BLACK;
		//strcpy(utf,"1");
		utf[0] = i + 48;
		utf[1] = 0;
		ypos = lcdDrawUTF8String(&dev, fxG32, xpos, ypos, utf, color);
		ypos = ypos - 32;
	}

	xpos = 120;
	ypos = YMAX2-(32*1);
	for (i=0;i<5;i++) {
		lcdDrawRect(&dev, xpos-8, ypos+16, xpos+40, ypos-32, BLACK);
		xptSetPoint(&tinfo, xpos-8 ,ypos+16 ,xpos+40, ypos-32, i+5);
		xptDump(&tinfo);
		color = BLACK;
		//strcpy(utf,"1");
		utf[0] = i + 53;
		utf[1] = 0;
		ypos = lcdDrawUTF8String(&dev, fxG32, xpos, ypos, utf, color);
		ypos = ypos - 32;
	}


	// read xpt2046
	int x, y;
	int pen_irq;
	int id;

	xpos = 40;
	ypos = YMAX2-(32*1);
	color = RED;
	for (;;) {
		usleep(10000);			/* do it anyway ; settle time when pen goes up */
		pen_irq = digitalRead(GPIO_PEN);
		if (pen_irq == LOW) { /* PenIRQ is LOW : touch! pen is down */
			id = xptGetPoint(SPI_CHANNEL, &tinfo);
			if (id != -1) {
if(_DEBUG_)printf("id=%d\n",id);
				ili9341_lcdInit(&dev, XMAX, YMAX, 0, 0);
				lcdSetFontDirection(&dev, DIRECTION90);
				utf[0] = id + 48;
				ypos = lcdDrawUTF8String(&dev, fxG32, xpos, ypos, utf, color);
			}
		}
	} // end for

}