RC11xx(HP)-TM
RC25xx(HP)-TM
RC17xx(HP)-TM
2016 Radiocrafts AS
RC11xx(HP)/25xx(HP)/17xx(HP)-TM Data Sheet rev. 1.48 Page 35 of 86
2016 Tiny Mesh AS
Radiocrafts
Embedded Wireless Solutions
Pulse Counter De-bounce
The pulse counter de-bounce feature is enabled by setting the
PULSE COUNTER DEBOUNCE
parameter
to the desired de-bounce time in milliseconds. Transitions on the pulse counter input during the settable
de-bounce period will be ignored, and a valid pulse must be at logical low level at the end of the de-
bounce period.
Pulse Count Verification
The
PULSE COUNTER FEEDBACK INDICATOR
option is a support function to verify proper pulse
counting. The feedback signal may be used to drive for instance a high efficiency LED for instant
verification of pulse detection.
Note: The output drive capability of the output is limited, as indicated in the
DIGITAL OUTPUT DRIVE
paragraph.
The feedback signal is controlled by the module pulse count firmware, and is therefore a true
representation of pulse detection, and may be used for field test calibration by for instance applying an
oscilloscope to the pulse source and the feedback output.
The feedback output signal has a total duration of minimum 4 ms, maximum 5 ms, and is triggered at
the same time as the module performs the sampling of the input signal level.
Note: When the pulse counter function is used in an End Device, the duration of the feedback indicator
signal will be truncated at the time the module returns to sleep mode, and will therefore only be active
for a few microseconds (us), or for the duration of the
PULSE COUNTER DE-BOUNCE
period.
The following Configurable parameters are used to control the Pulse Counter Feedback feature:
•
Enable Pulse Counter Feedback by setting the
FEEDBACK ENABLE
parameter = 2.
•
Enter the GPIO number (0-7) selected for the
FEEDBACK PORT
.
•
Configure the selected GPIO as Output by changing the appropriate
GPIO
function.
Note: Duration of the Pulse Counter Feedback Indicator function is controlled by the
INDICATORS ON
parameter. Pulse Counter Feedback will terminate when Indicators are off.