Ryuchiaho / STM32_NEC_Decode

A library for decoding NEC IR protocol with STM32

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