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AN4099 Datasheet(PDF) 1 Page - STMicroelectronics |
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AN4099 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 39 page  October 2012 Doc ID 023110 Rev 2 1/39 AN4099 Application note Implementing transmitters and receivers for infrared remote control protocols using STM32F0xx and STM32F3xx microcontrollers Introduction Infrared radiation is the region of the electromagnetic spectrum that lies between microwaves and visible light. Infrared radiation has two ranges. Near infrared light is closest in wavelength to visible light and far infrared is closer to the microwave region of the electromagnetic spectrum. The shorter waves are the ones used by remote controls. Information is transmitted and received using electromagnetic energy, without using wires. Infrared technology offers important advantages as a form of wireless communication. Nowadays, almost all audio and video equipment can be controlled using an infrared remote control. At the receiving end, a receiver detects the light pulses, which are processed to retrieve/decode the information they contain. There are many popular infrared protocol standards used to transmit data via infrared light, such as RC5, SIRC... The purpose of this application note is to provide a generic solution for implementing an IR transmitter (a remote control device) and receiver in software usingSTM32F0xx and STM32F3xx microcontrollers. An example of software implementation is provided for RC5 and SIRC protocols. Other protocols are supported and available upon request (for further information contact your local STMicroelectronics sales office). Note: The infrared transmitter and receiver solutions described in this document are implemented in C language and are available within the STM320518-EVAL(Config2), STM32373C-EVAL and STM32303C-EVAL Demo package available on http://www.st.com. Table 1. Applicable products Type Applicable products Microcontrollers STM32F0xx STM32F3xx www.st.com |
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