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I don’t understand how tslib works. Let’s say I have a serial touchscreen, in my understanding the data flows in the following way:
ts press -> serial port -> ts driver -> tslib -> device file (like /dev/input/eventX)
Is it right? Or do I need to insert some code between ts driver and tslib so that they can communicate?
Tslib does not operate between the touch screen driver and the input device file – it accesses the device file on behalf of the application using it. The key data flow when using tslib is
device file -> tslib -> application.The application specifies the input device file (of the touch device) tslib should use with the
ts_open()function and then uses other tslib functions to obtain the touch samples.The tslib API is defined in tslib.h and there’s a number of usage examples in the source under
testsincluding the simple ts_print.c.