Application of MSP430F415 in LCD air conditioner infrared remote control

Aguilera

Application of MSP430F415 in LCD air conditioner infrared remote control [Copy link]

The air conditioner infrared remote control is a portable device that is usually powered by two alkaline batteries and communicates one-way with the wall unit or cabinet unit through 38KHZ infrared carrier modulation.

Due to its low cost and low power consumption, it has been widely used not only in air conditioners, but also in other home appliances and toys.

The ultra-low power consumption and reliability design of the system is one of the primary goals. This paper adopts the low power consumption and high integration requirements of the application.

MSP430F415 ultra-low power MCU realizes complete functions such as key scanning, LCD display, infrared transmission, etc.

Table of contents

1 Introduction to the Air Conditioner Remote Control.................................................................................. 2

2 System Structure and Overall Solution.................................................................................................. 2

3 System hardware and software design.................................................................................................. 3

3.1 System Clock Distribution.................................................................................................. 3

3.2 Software Functional Module Design.................................................................................................. 4

3.2.1 Key Scanning Design.................................................................................................. 4

3.2.2 Infrared carrier and coding transmission design.................................................................. 6

3.2.3 Design of the whole machine software functional architecture................................................... 7

4 System Reliability Design.................................................................................................................. 8

5 Conclusion.................................................................................................................................. 11

Reference Documents.................................................................................................................. 11

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