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MSP430FR4133: IR remote control

TEMC
Intellectual 725 points
Part Number: MSP430FR4133

I have ordered MSP-EXP430 EVM kit for MSP430 controller. I wanted to make IR remote control with this. MSP430 is having in built IR modulation Logic so I need to use IR receiver module foe demodulation. Is it correct?

In Infrared Remote Control Implementation With MSP430FR4xx document, there given about IR protocols.I have one doubt, that do I need to implement any one of these protocols or these are already in controller?

  • 0
    TI__Guru**** 208857 points
    Yes, the MSP430FR4133 has an on-chip IrDA encoder/decoder. SLAA644 refers to various IrDA protocols (the way information is expected to be sent/received) that are used to communicate with the desired infrared device, you must select the one necessary for your specific remote control but this has little to do with the eUSCI/UART peripheral on the MSP430 other than determining how to set the IrDA registers properly.

    Regards,
    Ryan
  • 0 in reply to Ryan Brown1
    Intellectual 725 points

    I have seen SLAA644 document. There has given about different protocols. I have few questions to you.

    1. What is meant by eUSCI?

    2.MSP430FR4133 carrier frequency is 33KHz, am I correct? If yes, why booster pack of IR remote is developed for 38KHz carrier frequency.

    3.Do I need to implement particular protocol in my program, or controller can deal with protocols directly? Like modulation, controller can do...

    Please clarify me on this..

  • 0 in reply to TEMC
    TI__Guru**** 208857 points
    1. eUSCI stands for Enhanced Serial Communications, it is the module that supports IrDA communication.
    2. The carrier frequency is dependent on the clock frequency as determined by the UCBRx (BRCLK) bits of the UCAxBRW register. 38 kHz is one of the most common IR carrier frequencies for remote control applications and is used by many TV and air conditioner manufacturers. This frequency must be used with the BoosterPack due to the limits of the on-board Vishay demodulator. IR receiver replacement options are shown in Table 1 of SLAU598.
    3. The MSP430FR4133 device has built-in IR modulation capabilities. The internal IR modulation is configurable and flexible. It supports both ASK and FSK modulation, which allows implementation of a variety of IR protocols.

    Regards,
    Ryan

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