Hi everybody. I have a touchpad connected to my arduino. The touchpad uses this IC http://www.mouser.com/catalog/specsheets/iqs550.pdf
And I think it uses I2C communication to get the data. I already found a code that shows me the acceleration of this touchpad, but I need it to show me the current position of my finger. In the datasheet I found, that it can hold 5 touches at the time and somehow get their position. But I really don´t know how to pull the data from it.
I would appriceate every response, thank you.
The code I am using right now
#include <ps2.h>
/*
* an arduino sketch to interface with a ps/2 mouse.
* Also uses serial protocol to talk back to the host
* and report what it finds.
*/
/*
* Pin 5 is the mouse data pin, pin 6 is the clock pin
* Feel free to use whatever pins are convenient.
*/
PS2 mouse(6, 5);
/*
* initialize the mouse. Reset it, and place it into remote
* mode, so we can get the encoder data on demand.
*/
void mouse_init()
{
mouse.write(0xff); // reset
mouse.read(); // ack byte
mouse.read(); // blank */
mouse.read(); // blank */
mouse.write(0xf0); // remote mode
mouse.read(); // ack
delayMicroseconds(100);
}
void setup()
{
Serial.begin(9600);
mouse_init();
}
/*
* get a reading from the mouse and report it back to the
* host via the serial line.
*/
void loop()
{
char mstat;
char mx;
char my;
/* get a reading from the mouse */
mouse.write(0xeb); // give me data!
mouse.read(); // ignore ack
mstat = mouse.read();
mx = mouse.read();
my = mouse.read();
/* send the data back up */
//Serial.print(mstat, BIN);
//Serial.print("\tX=");
Serial.print(mx, DEC);
Serial.print("\t");
Serial.print(my, DEC);
Serial.println();
// delay(20); /* twiddle */
}
