# STM32_NEC_Decode

**Repository Path**: lawson1990s/STM32_NEC_Decode

## Basic Information

- **Project Name**: STM32_NEC_Decode
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2026-04-15
- **Last Updated**: 2026-04-15

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# STM32_NEC_Decode
A library for decoding NEC IR protocol with STM32

Instructions:
=============
- configure HW
- initialize the library(provide the necessary information)

Configuring HW
==============
The library requires a specific HW setup
Requirements
- GPIO pin that is a timer input capture channel
- that timer can generate DMA requests
- that timer can measure up to 20ms
- that timer can be configured in ResetSlave mode to reset on every falling edge of the capture input

Initialize the library
======================
To start receiving data the library needs the following:
- timerHandle of the timer being used for the time measurements
- timerChannel and timerChannelActive of the timer channel being used for the input capture
- type of the NEC protocol (either extended or not)
- timingBitBoundary is the boundary value of the timer value for individual bits (if timer value is lower bit=0, if greater bit=1)
- timingAgcBoundary is the boundary value of the timer value for the AGC pulse (if timer value is lower the frame is a RepeatFrame, if greater frame is a DataFrame)
- 3 callbacks to handle decoded/error/repeat events

And then you can just call NEC_Read() to start listening for a packet