2.12.1. V4L2_TCH_FMT_DELTA_TD16 (‘TD16’)

man V4L2_TCH_FMT_DELTA_TD16(2)

16-bit signed little endian Touch Delta

2.12.1.1. Description

This format represents delta data from a touch controller.

Delta values may range from -32768 to 32767. Typically the values will vary through a small range depending on whether the sensor is touched or not. The full value may be seen if one of the touchscreen nodes has a fault or the line is not connected.

Byte Order. Each cell is one byte.

start + 0:

D’00low

D’00high

D’01low

D’01high

D’02low

D’02high

D’03low

D’03high

start + 8:

D’10low

D’10high

D’11low

D’11high

D’12low

D’12high

D’13low

D’13high

start + 16:

D’20low

D’20high

D’21low

D’21high

D’22low

D’22high

D’23low

D’23high

start + 24:

D’30low

D’30high

D’31low

D’31high

D’32low

D’32high

D’33low

D’33high