MSP430FR2476: I2C communication

Ankita Tripathi

Part Number: MSP430FR2476

Tool/software:

I was using pin 3.1 and pin 3.0 as I2C communication. but these communication pin 3.1 is also on MSP1 board as well as U100 so how would we know which board is working?

8 months ago

0 Eason Zhou 8 months ago

TI__Mastermind 39775 points

What do you mean with "MSP1 board" and "U100"?

0 Ankita Tripathi 8 months ago in reply to Eason Zhou

Prodigy 10 points

Here U100 is the debug MCU and MSP1 is the target board

0 Keith Barkley 8 months ago in reply to Ankita Tripathi

Guru 42115 points

You need to pull the RXD TXD jumper so that the back channel UART is disconnected.

0 Ankita Tripathi 8 months ago in reply to Keith Barkley

Prodigy 10 points

I want to know when MSP1 or U100 is selected as in which will work when we dump code

0 Keith Barkley 8 months ago in reply to Ankita Tripathi

Guru 42115 points

3.1 on U100 is only used to communicate with the DCDC converter. It is totally separate from 3.1 on the MSP1. Since they are both MSP430's, the pins share common names, but are on totally separate chips. I think your main problem is that Pin 3.0 on MSP1 is not connected to anything.

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MSP430FR2476: I2C communication