Interfacing two ez430

Anandha Ruban T T

I need to interface two ez430-RF2500 modules, while one of the modules already uses UART to communicate with other peripherals, so can I make them communicate through I2C, while UART is also in function in one module?

please someone help me where to start?

over 13 years ago

0 Roberto Romano over 13 years ago

Guru 27285 points

Please reword your question.

Regards

0 Anandha Ruban T T over 13 years ago in reply to Roberto Romano

Prodigy 140 points

I'm using two ez430-RF2500 Target boards, they have MSP430-F2274 controller on board. I need to interface these two boards using I2C.

I also need to use the UART ports of the controllers at the same time. Is that possible?

0 Jens-Michael Gross over 13 years ago in reply to Anandha Ruban T T

Guru 227245 points

The 2274 has one USCI module. Each USCI module provides an USCIA module with UART or SPI functionality, and one USCIB with SPI or I2C functionality.
USCIA and USCIB can be used independently except for the fact that they share the same interrupt vectors for RX and TX, so you have to figure out which of the two was causing the current interrupt. (on 5x family, both each have one single, independent interrupt vector)

However, I'm not sure whether the I/O pins with the I2C signals connected to are still unused on the EZ430RF2500 target board. You'll have to check the layout.

0 Anandha Ruban T T over 13 years ago in reply to Jens-Michael Gross

Prodigy 140 points

yeah! thats right na.... Thank you so much!!

**Attention** This is a public forum

MSP low-power microcontrollers

MSP low-power microcontroller forum

Interfacing two ez430