Project

General

Profile

MityDSP-L138F - External SPI access from "Industrial IO Development Kit"

Added by Mathew Jones over 4 years ago

Hi
We're developing ARM software using ThreadX on the MityDSP-L138F (i.e. with FPGA), which resides on the "Industrial IO Development Kit".
We want to interface from the ARM to several off-board SPI devices but looking at the pin assignments on J700, J701 & J702 it initially looked like neither SPI0 nor SPI1 came out from any of these connectors, however I did notice that SPI1 is actually on J700 as it is shared with CAN, which we don't use.

My question is: can we use the following RESERVED J700 pins from the "Industrial IO Development Kit" in a similar way that the "Industrial IO Analog Expansion Kit" does to access its ADC and DAC?
  • Pin 11 (CAN_CLK) for SPI1 Clock
  • Pin 13 (CAN_SIMO) for SPI1 SOMI
  • Pin 15 (CAN_SOMI) for SPI1 MOSI
and OMAP GPIO for the SPI Chip selects, e.g.
  • Pins 19-22

Regards
Mat


Replies (4)

RE: MityDSP-L138F - External SPI access from "Industrial IO Development Kit" - Added by Michael Williamson over 4 years ago

Hi Mat,

If you are using a board with a revision 1E or higher (see the Industrial IO Revision Information), then you can use the J700 pins for the SPI as you would like. We brought the SPI pins out to that connector after the initial design was released, and it appears that we did not catch the change in the datasheet. I am sorry for the confusion.

-Mike

RE: MityDSP-L138F - External SPI access from "Industrial IO Development Kit" - Added by Mathew Jones over 4 years ago

That's great. We're using the 80-000268RI-2B so should be able to use those SPI1 pins.
Thanks for clarifying that.

RE: MityDSP-L138F - External SPI access from "Industrial IO Development Kit" - Added by Andri Haryono about 3 years ago

Hello Mike,

I am using 80-000268RI-3B. but there are no update in the following link regarding the update
https://support.criticallink.com/redmine/projects/indio/wiki/Industrial_IO_Revision_Information

Which revision I can refer to for my board?

thanks

-Andri

    (1-4/4)
    Add picture from clipboard (Maximum size: 500 MB)