Allow the AFE4404 to communicate with a blue-wired MSP430

Victor B

Other Parts Discussed in Thread: AFE4404, MSP430G2553, AFE4404EVM

Hello,

I am trying to figure out how to let the AFE4404EVM communicate with a currently blue-wired MSP430. I am not sure what I need to do in the code to allow the MSP 430 to send a command to the AFE to turn on its photodiode and LEDs for oximetry, and have the data be sent back to the MSP 430. I know that the AFE4404 requires a clock to run, and the frequency of this clock has to be at 8MHz. The MSP 430 that I am currently using is the MSP430 EXP430G2 launchpad with the MSP430G2553 in it.

How would you recommend going about this problem?

Thanks!

over 8 years ago

0 Praveen Aroul over 8 years ago

TI__Mastermind 49926 points

Hi Victor,

We have received your inquiry regarding the AFE4404 and hope to have some answers back to you shortly.

0 Prabin Yadav over 8 years ago in reply to Praveen Aroul

TI__Genius 12575 points

Hi Victor,

AFE4404EVM has onboard MSP430 as well as AFE4404. I am assuming you wan to control AFE4404 alone with the external MSP430.
To do so you can follow the steps given below:
1) Remove the connection between onboard MPS430 and AFE4404.
2) Connect ( Blue wire) external MSP430 to the AFE4404.
3) Program the external MSP430 to communicate to AFE4404 using SPI/I2C interface. For reference you can look at the source code of onboard MSP430 . Software section of www.ti.com/.../afe4404evm .

Regards,
Prabin

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Allow the AFE4404 to communicate with a blue-wired MSP430