Posted on July 09, 2018 at 15:32Hi all,
I have few following doubts regarding board...please clarify them...
1. is it possible to implement a multi touch USB HID descriptor?. Because, i have already implemented a single touch descriptor and tested on STM32F411VE-Disco board,and which was working for me.
when i started to working on multi touch with same board, i couldn't able to get anything(single touch/multi touch).
But in both(single/multi) ways, i am simulating(hard coded) data and sending to PC, which working for single touch but not for multi touch.
If it is works for multi touch.... i have some more doubts on USB library.
1.In my case i need to send feature report to PC, to work as a multi touch.so, how to send feature report to PC or from PC?
below code is my input report, which i am sending from device to PC.
//finger 1 data
my_buff[0] = 0x02;
my_buff[1] = 0x07;
my_buff[2] = 0x00;
my_buff[3] = 0x7a;
my_buff[4] = 0x04;
my_buff[5] = 0xdf;
my_buff[6] = 0x02;
//finger2 data
my_buff[7] = 0x07;
my_buff[8] = 0x01;
my_buff[9] = 0x7a;
my_buff[10] = 0x04;
my_buff[11] = 0xdf;
my_buff[12] = 0x02;
//maximum contact count..
my_buff[13] = 0x02;
USBD_HID_SendReport (&hUsbDeviceFS,
my_buff,
14);
2.And what are all things need to be take care, device to work as a multi touch.
Here i m attaching my report descriptor for 2 fingures...
please help me out to work it as multi touch device.
thank you
