Difference between revisions of "Firmware-72 Function-004"
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:240, 125, 0 {DEV}, 106 {EDIT CONFIG}, 1 {configuration number}, 0 {input}, 48 {control-change message}, 64 {controller number}, 34 {peak detection with end notification}, 1 {threshold}, 64 {top}, 0 {noisegate}, 0 {time window}, 247 (F0h, 7Dh, 00h, 6Ah, 01h, 00h, 30h, 40h, 22h, 40h, 7Fh, 00h, 00h, F7h) | :240, 125, 0 {DEV}, 106 {EDIT CONFIG}, 1 {configuration number}, 0 {input}, 48 {control-change message}, 64 {controller number}, 34 {peak detection with end notification}, 1 {threshold}, 64 {top}, 0 {noisegate}, 0 {time window}, 247 (F0h, 7Dh, 00h, 6Ah, 01h, 00h, 30h, 40h, 22h, 40h, 7Fh, 00h, 00h, F7h) | ||
| − | The threshold value may need adjustment to properly capture the signal peaks. | + | The threshold value may need adjustment to properly capture the signal peaks that occur when shaking the GForce3D-6 sensor. |
Revision as of 16:05, 3 November 2015
ABSOLUTE (4, 04h)
The absolute function provides a way to convert signals that vary around a center value (such as from accelerometers and physiological sensors) to a value from zero. The following methods can be selected using the FUNCTION command’s parameter values FP1 and FP2:
FP1
| 0xxxxxxx: | xxxxxxx = [0..127]; Offset high bits |
FP2
| 00000yyy: | yyy = [0..7]; Offset low bits |
The offset is calculated as a 10-bit value represented by xxxxxxxyyy.
Example:
In order to output the value generated by a sudden motion of a GForce3D-6 sensor as a MIDI controller 64 message, the following messages are sent (see also the EDIT CONFIG command):
- 240, 125, 0 {DEV}, 8 {FUNCTION}, 0 {input}, 0 {offset least significant bits}, 4 {absolute function}, 64 {offset MSB}, 247 (F0h, 7Dh, 00h, 08h, 00h, 00h, 04h, 40h, F7h)
- 240, 125, 0 {DEV}, 106 {EDIT CONFIG}, 1 {configuration number}, 0 {input}, 48 {control-change message}, 64 {controller number}, 34 {peak detection with end notification}, 1 {threshold}, 64 {top}, 0 {noisegate}, 0 {time window}, 247 (F0h, 7Dh, 00h, 6Ah, 01h, 00h, 30h, 40h, 22h, 40h, 7Fh, 00h, 00h, F7h)
The threshold value may need adjustment to properly capture the signal peaks that occur when shaking the GForce3D-6 sensor.
