This is just a sample how to read a 4-pin restive touchsceen
int ADCvalue, x, y; // // Read X axis. Set RC1 Low, RA1 high, RC0 input (floating) and read AN0 TRISCbits.TRISC0 = 1; TRISCbits.TRISC1 = 0; LATCbits.LATC1 = 0; TRISAbits.TRISA1 = 0; TRISAbits.TRISA0 = 1; LATAbits.LATA1 = 1; AD1PCFG = 0xfffe; // AD0 AD1CON1 = 0x0000; AD1CSSL = 0x0000; AD1CHS = 0x0000; // AN0 AD1CON2 = 0x0000; AD1CON3 = 0x0002; AD1CON1bits.ADON = 1; ADCvalue = 0; IFS0bits.AD1IF = 0; AD1CON1bits.SAMP = 1; __delay_ms(50); AD1CON1bits.SAMP = 0; while (!AD1CON1bits.DONE) ; ADCvalue = ADC1BUF0; x = ADCvalue/6; // Scale X-value // // Read Y axis. Set RC0 Low, RA0 high, RC1 input (floating) and read AN1 AD1PCFG = 0xfffd; // AD1 TRISCbits.TRISC0 = 0; LATCbits.LATC0 = 0; TRISCbits.TRISC1 = 1; TRISAbits.TRISA1 = 1; TRISAbits.TRISA0 = 0; LATAbits.LATA0 = 1; AD1CHS = 0x0001; // AN1 ADCvalue = 0; IFS0bits.AD1IF = 0; AD1CON1bits.SAMP = 1; __delay_ms(50); AD1CON1bits.SAMP = 0; while (!AD1CON1bits.DONE) ; ADCvalue = ADC1BUF0; y = ADCvalue/10; // Scale Y-value xprintf("\rTouch x:%4d y:%4d", x,y);
file: /Techref/Resisitive_Touch.htm, 1KB, , updated: 2017/4/14 06:36, local time: 2025/2/19 00:07,
18.97.9.174:LOG IN
|
©2025 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions? <A HREF="http://www.piclist.com/Techref/Resisitive_Touch.htm"> Resitive touch screen</A> |
Did you find what you needed? |
![]() o List host: MIT, Site host massmind.org, Top posters @none found - Page Editors: James Newton, David Cary, and YOU! * Roman Black of Black Robotics donates from sales of Linistep stepper controller kits. * Ashley Roll of Digital Nemesis donates from sales of RCL-1 RS232 to TTL converters. * Monthly Subscribers: Gregg Rew. on-going support is MOST appreciated! * Contributors: Richard Seriani, Sr. |
Welcome to www.piclist.com! |
.