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AN4099 Datasheet(PDF) 31 Page - STMicroelectronics

Part # AN4099
Description  Implementing transmitters and receivers for infrared remote control protocols using STM32F0xx and STM32F3xx microcontrollers
PDF  39 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4099 Datasheet(HTML) 31 Page - STMicroelectronics

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AN4099
Interface layer
Doc ID 023110 Rev 2
31/39
4
Interface layer
Figure 23.
Application layer architecture
There are many similar infrared protocols that are differentiated by timing parameters such
as the SIRC protocol. These protocols are handled by sirc_decode.c/sirc_encode.c
functions. You only need to update the timing values.
There are others that are quite different and are managed by specific functions such as RC5
and its associated driver rc5_decode.c/rc5_encode.c.
Each protocol has a specific structure frame. IR_FRAME is a pointer to the selected infrared
protocol structure and it contains the main information needed for communication (device
address and command).
4.1
Demonstration programs
To ensure a quick start, the infrared transmitter and receiver presented in this document are
implemented in C language and are available within the STM320518-EVAL(Config2),
STM32373C-EVAL and STM32303C-EVAL Demo package.
4.1.1
Transmitter demonstration using IRTIM
This demonstration consists in transmitting IR messages displayed on an LCD.
Each IR message is displayed in two parts.
●
The IR device receiver.
●
The command to be executed.



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