[FAQ] J722SXH01EVM: How do I use the Fusion2 board with the J722SXH01EVM

Hardware Requirements

To get the Fusion2 board to work with the J722S, there are some hardware requirements that must be met:

1. J722SXH01EVM revision: E1 or E3+
2. Fusion2 E3A only
   1. F2 Fuse must be removed

The power sequence is as follows:

1. Power Fusion2 board
2. Power J722SXH01EVM

Methods of connecting the J722S EVM to the Fusion2 board:

1. Fusion2 Adapter Board (recommended)
   
   
   
   
2. SAMTEC cable
   
   
   
   
3. Directly
   
   

Software Changes

The imaging code defaults to the Fusion1 board, so a hardcoded edit must be made.

bDet must be hardcoded to vx_true_e.

Following is a patch for SDK 11.0; apply the patch to the imaging repository:

From dd415d6b7b026745c0bf86c60f6bef5044710f71 Mon Sep 17 00:00:00 2001
From: Jared McArthur <j-mcarthur@ti.com>
Date: Fri, 26 Sep 2025 17:16:15 -0500
Subject: [PATCH 1/1] sensor_drv: iss_sensors: Hardcode to Fusion2 board
 configuration

Signed-off-by: Jared McArthur <j-mcarthur@ti.com>
---
 sensor_drv/src/iss_sensors.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sensor_drv/src/iss_sensors.c b/sensor_drv/src/iss_sensors.c
index fdb33a4..8a53011 100755
--- a/sensor_drv/src/iss_sensors.c
+++ b/sensor_drv/src/iss_sensors.c
@@ -3172,6 +3172,8 @@ static int32_t IssSensor_DeserializerInit()
     bDet = Board_detectBoard(BOARD_ID_FUSION2);
     #endif
 
+    bDet = vx_true_e; /* hardcode to Fusion2 configuration */
+
     if(bDet == vx_true_e)
     {
         printf("Fusion2 Board Detected, using Fusion2 configuration\n");
-- 
2.34.1

After this change is applied, rebuild the SDK:

$ cd sdk_builder
$ make sdk_scrub
$ make sdk

On Target Instructions

Run the following before running the single camera app:

$ gpioset -c gpiochip2 68=1 &

In other words, run the following:

$ cd /opt/vision_apps
$ source ./vision_apps_init.sh
$ gpioset -c gpiochip2 68=1 &
$ ./run_app_single.sh