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EV3 PWM Pulse Width Modulation

  1. Documentation
  2. Kernel Hacker's Notebook
  3. EV3 PWM

The AM1808 SoC has 2 Enhanced High Resolution Pulse Width Modulators (eHRPWMs) and 3 Enhanced Capture Modules (eCAPs) that can be configured as PWMs.

The EHRPWMs actually have 2 PWM outputs (A/B) per device for a total of 4 EHRPWMs.

Usage

Device Connection
EHRPWM0A Not used/connected
EHROWM0B Drives the EV3 speaker to produce sound
EHRPWM1A Output port B motor driver
EHRPWM1B Output port A motor driver
ECAP0 Output port C motor driver
ECAP1 Output port D motor driver
ECAP2 Bluetooth “slow clock” @ 32.767kHz