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What is this? This is a driver for serial SPF touchscreen panels, such as the carrolltouch units from ELO. For more information on the SPF standard, please see http://media.elotouch.com/pdfs/manuals/program.pdf The generic sequence for initializing an SFP panel is as follows: Send: break 0x0D -> about 5 times, for auto baud detection 0x3C - Software reset 0x32 - Generate Error report 0x44 - Report Transfer Receive: F8 - Report header 00 - no errors FF - end of report Send panel options: 0x23 - coordinate reporting 0x26 or 0x27 ( 0x29 ) - Add_exit_point_modifier - Sends a packet indicating finger removed 0x2A - Starts touch scanning ---- 0x26 - Tracking mode - Sends only 1 packet per touch 0x27 - continuous mode - Sends continuously, even if no changes ---- The unit will now send a 4 Byte packet every time it is pressed: 0xFE or 0xFD 0xXX 0xYY 0xFF 0xFE = finger down, 0xFD = finger released.