Bridge CDC Interface to PWM and Freq.

1. Introduction

This is a simple example of how to use the CH552 to control the PWM and frequency of the device.

2. Hardware

• CH552

3. Software

• sdcc compiler
• ch552.h

4. How to use

• Download the code
• Compile the code
• Upload the code to the CH552

5. Usage

• Connect the CH552 to the computer
• Open the serial terminal with the baud rate of 9600

6. Instructions

• The CH552 will receive the commands from the serial terminal and will change the PWM and frequency of the device.

    pwm<0-255>;
    freq<0-30000>;

Example

change the pwm to 100

    pwm100;

change the frequency to 1000

    freq1000;

Note

Send commands with the correct format, otherwise the CH552 will not understand the command.

Warning

The CH552 will not accept values out of the range.

7. License

This code is under GPL v3 license.