[FAQ] MCU-PLUS-SDK-AM243X: How-to test FSI in a 2-device loopback on AM243x LP or EVM

Paula Carrillo

Tool/software:

Hi, AM243x MCU SDK includes an FSI internal loopback example, but I would like to test an external loopback using 2 boards. How can I do it?

28 days ago

0 Paula Carrillo 28 days ago

TI__Mastermind 33420 points

Recommended to try first 1-device loopback

(+) [FAQ] MCU-PLUS-SDK-AM243X: How-to test FSI external 1-device loopback on AM243x LP or EVM - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

AM243x LP <-> LP

Software:

Hardware:

From AM243x LaunchPad Development Kit User's Guide (Rev. F) (ti.com) we have:

Device 1 (J16) <-> Device 2 (J16)

RX0_CLK <-> TX0_CLK
TX0_CLK <->RX0_CLK
GND <-> GND (both lines of ground)
RX0_D0 <-> TX0_D0
TX0_D0 <-> RX0_D0

Connect UART for both boards
Rebuild / Rerun loopback demo on both devices
Press Enter on "Node" device 2 first, then press Enter on "Lead" which is device 1

Alternative (recommended) use "Fast serial interface (FSI) adapter board evaluation module" daughter card on top of LP.

TMDSFSIADAPEVM Daughter card | TI.com
- User Guide: FSI Adapter Board User’s Guide (ti.com)

0 Paula Carrillo 28 days ago in reply to Paula Carrillo

TI__Mastermind 33420 points

AM243x EVM <-> LP

Software:

Hardware:

From AM243x LaunchPad Development Kit User's Guide (Rev. F) (ti.com) and AM64x / AM243x Evaluation Module User's Guide (Rev. A) we have:

Device 1 (J7 Rev C) <-> Device 2 (J16)

RX0_CLK <-> TX0_CLK
TX0_CLK <-> RX0_CLK
GND <-> GND (both lines of ground)
RX0_D0 <-> TX0_D0
TX0_D0 <-> RX0_D0

Connect UART for both boards
Rebuild / Rerun loopback demo on both devices
Press Enter on "Node" device 2 first, then press Enter on "Lead" which is device 1

Alternative (recommended) use "Fast serial interface (FSI) adapter board evaluation module" daughter card on top of LP. AM243x EVM connects to this daughter card with jumper cables.

TMDSFSIADAPEVM Daughter card | TI.com
- User Guide: FSI Adapter Board User’s Guide (ti.com)