55. QEOV2

55.1. Overview

QEOv2 (Quadrature Encoder Output Version 2) is a new generation quadrature encoder output peripheral. QEOv2 can generate various types of output signals based on input position information:

  • ABZ quadrature encoder signals

  • Waveform signals (cosine wave, triangle wave, saddle wave, etc.)

  • PWM commutation control signals

55.2. Features

  • Position Input Support:

    • Get position from system position manager

    • Software position injection

    • Support position compensation and line number conversion

  • Waveform Output Features:

    • Support 4 waveforms: cosine wave, bread wave, saddle wave, sawtooth wave

    • 3 independent output channels with configurable phase shift

    • Support VD/VQ control (support getting VD/VQ from CLC)

    • Support waveform scaling, limiting and dead zone compensation

    • Support output PWM duty cycle adjustment

  • ABZ Output Features:

    • Support 4 output modes:

      • A/B quadrature output with self-position

      • High-speed pulse (Pulse&Revise) output

      • Up&Down output

      • A/B quadrature output without self-position

    • Built-in position manager with position synchronization

    • Configurable minimum pulse width

    • Support watchdog function

  • PWM Output Features:

    • Support 8 groups of PWM force output control signals

    • Configurable up to 12-phase commutation tables

    • Support safety mode configuration

    • Support three-phase BLDC and two-phase stepper motor control

55.3. API Description

55.3.1. Position Control APIs

/* Configure SEI interface sampling */
void qeov2_sei_config(QEOV2_Type *ptr, qeov2_sei_config_t *config);

/* Write position value by software */
void qeov2_set_position(QEOV2_Type *ptr, uint32_t position);

/* Get current position value */
uint32_t qeov2_get_position(QEOV2_Type *ptr);

55.3.2. ABZ Output APIs

/* Configure ABZ output parameters */
void qeov2_abz_config(QEOV2_Type *ptr, qeov2_abz_config_t *config);

/* Set encoder resolution */
void qeov2_set_resolution(QEOV2_Type *ptr, uint32_t lines);

/* Configure position synchronization */
void qeov2_position_sync(QEOV2_Type *ptr, uint32_t position);

55.3.3. PWM and Waveform Output APIs

/* Configure PWM output mode */
void qeov2_pwm_config(QEOV2_Type *ptr, qeov2_pwm_config_t *config);

/* Configure waveform output */
void qeov2_wave_config(QEOV2_Type *ptr, qeov2_wave_config_t *config);

/* Set phase shift */
void qeov2_set_phase_shift(QEOV2_Type *ptr, uint32_t phase);

55.4. Examples