UM1695 Datasheet, PDF (30/46 Pages) STMicroelectronics – This document provides a detailed description

Command reference
UM1695
Arguments:
<Value>: must be set in mV (between 1 and 2500), 0 disables DAC on GPIO15
2.43
Note:
AT+S.PWM: set PWM on GPIO1
The PWM command enables PWM on GPIO1 with a specified frequency and duty-cycle.
The max frequency value (10 KHz) allows user to set any duty-cycle between 0 and 100
Arguments:
<frequency>: value between 1 and 10 KHz, 0 disables PWM on GPI01
<Duty-Cycle>: value between 0 and 100 (default=50%)
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