HT HT49CVX Remote Control Receiver Software Module Design Guide

About this manual

The document describes a software module designed to decode NEC format infrared remote control signals. It is specifically applicable to the HT49CVX series microcontrollers that feature the RMT TIMER function. The module utilizes the RMT TIMER to record high and low pulse widths, determining signal bits based on relative width comparisons. This manual is written in Chinese.

What's inside

• Overview
• Function and Principle
• Usage Instructions
• System Resources
• User Interface
• Program Flowchart

Specifications

Frequently asked questions

What system frequency is required for the default constants?

The default constants in the receiver_define.asm file are configured for a system frequency of 4MHz.

How should the constants be modified if the system frequency is not 4MHz?

Users must modify the constants lo_l, lo_h, hi_l, and hi_h in the receiver_define.asm file.