This is the documentation for the latest (main) development branch of HPM SDK. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

6.28. QEI¶

6.28.1. Overiew¶

QEI project demonstrates the output of Hall timer data using the serial port after triggering the QEI interrupt

Configuring the QEI Interrupts
Read the QEI U\V\W\TIMER register

6.28.2. Configurations¶

Install the serial terminal, view board information, and configure the serial terminal parameters
This program uses the BLM57050-1000 brushless motor of “Leisai Intelligence”, refer to the Leisai Intelligence website for the specific parameters of the motor.
Click DRV-LV50A-MP1907 Motor Driver Board section and configure

6.28.3. Running the Demo¶

Power on, open the serial terminal, turning the motor bearing will trigger a QEI interrupt and print the following information. The data changes with the speed and direction of rotation, please refer to the user manual for the exact meaning of the data.

> z: 0xffffff9c
> phase: 0xc200014d
> speed: 0xa0000000
> timer: 0xa8d08799