M1 (Pwm1 Output Level); Pt (Pwm Output Timeout); Rp (Rssi Pwm Timer) - Digi XBee User Manual

S1 802.15.4 (legacy) rf modules
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AT commands
The PWM period is 64 µs and there are 0x03FF (1023 decimal) steps within this period. When M0 = 0
(0% PWM), 0x01FF (50% PWM), 0x03FF (100% PWM), and so forth.
Note
Minimum firmware version required: 1.xA0. Firmware versions are numbered in hexadecimal
notation.
Parameter range
0 - 0x3FF
Default
0

M1 (PWM1 Output Level)

Sets or displays the PWM1 output level (pin 7).
Before setting the line as an output:
1. Enable PWM1 output (P1 = 2).
2. Apply settings (use CN or AC)
Note
Minimum firmware version required: 1.xA0. Firmware versions are numbered in hexadecimal
notation.
Parameter range
0 - 0x3FF
Default
0

PT (PWM Output Timeout)

Sets or displays the output timeout value for both PWM outputs. When PWM is set to a non-zero value
(due to I/O line passing), a timer is starts that sets the PWM output to zero when it expires. The timer
resets when it receives a valid I/O packet.
Note
Minimum firmware version required: 1.xA0. Firmware versions are numbered in hexadecimal
notation.
Parameter range
0 - 0xFF (x 100 ms)
Default
0xFF

RP (RSSI PWM Timer)

The following table shows dB levels above sensitivity and PWM values. The total time period of the
PWM output is 8.32 ms. PWM output consists of 40 steps, so the minimum step size is 0.208 ms.
Enables a pulse-width modulated (PWM) output on the RF device. We calibrate the pin to show the
difference between received signal strength and the sensitivity level of the device. PWM pulses vary
XBee/XBee-PRO S1 802.15.4 (Legacy) User Guide
I/O settings commands
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