Interfacing one LDC1000 with 2 controllers

Ankit Gupta1

Other Parts Discussed in Thread: F28M35H52C

Hello,

My Requirement is to interface one LDC1000 (Resonant Inductive sensor) with SPI module of two different controller “F28M35H52C”. shown in fig below.

SPI frequency frequency 4MHz.

Please suggest some configuration or connection for sensor data to reach both controllers in parallel. Interface board will be custom board for connections.

Regards,

Ankit Gupta

over 10 years ago

0 Chris Oberhauser66 over 10 years ago

TI__Genius 14270 points

Hello Ankit,

Can you simply use one MCU as a master and connect the second mcu to the first via a UART and transfer the results to the second over a UART?

Regards,

ChrisO

0 Ankit Gupta1 over 10 years ago in reply to Chris Oberhauser66

Prodigy 90 points

Hello Chris,

I can use some other protocol to transfer the position data to other controller, but at this point I am trying to find any possible ways to use SPI only.

I found Daisy chain or Individual CS can also be ways I connect the system. But not sure which one will be better option.

I will be using differential signalling for data and CLK.

Please suggest if you have any preference on any of these two configurations.

Regards
Ankit Gupta

0 Natallia Holubeva1 over 10 years ago in reply to Ankit Gupta1

TI__Expert 6550 points

Hello Ankit,

The question is answered in the following post:

http://e2e.ti.com/support/sensor/inductive-sensing/f/938/p/356616/1338598.aspx#1338598

Best Regards,

Natallia Holubeva

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Interfacing one LDC1000 with 2 controllers