2.12.2. V4L2_TCH_FMT_DELTA_TD08 ('TD08')¶
man V4L2_TCH_FMT_DELTA_TD08(2)
8-bit signed Touch Delta
2.12.2.1. Description¶
This format represents delta data from a touch controller.
Delta values may range from -128 to 127. 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'00 |
D'01 |
D'02 |
D'03 |
start + 4: |
D'10 |
D'11 |
D'12 |
D'13 |
start + 8: |
D'20 |
D'21 |
D'22 |
D'23 |
start + 12: |
D'30 |
D'31 |
D'32 |
D'33 |