# Address not mapped

Source: https://forum.modalai.com/topic/2013/address-not-mapped
Category: VOXL 2 and VOXL 2 Mini (https://forum.modalai.com/category/26/voxl-2-and-voxl-2-mini)
Tags: voxl-2
Posted: 2023-03-29 11:54:56 UTC by Tamas Pal 0
Replies: 1 · Views: 526

## Tamas Pal 0 · 2023-03-29 11:54:56 UTC

Re: [Address not mapped](/topic/637/address-not-mapped)
I am having similar issue. Please help me to fix this 
```
voxl2:/$ voxl-configure-cameras 4
Camera Configuration: 4
enabling and starting voxl-camera-server
Done Configuring Cameras
voxl2:/$ voxl-camera-server -d 0
existing instance of voxl-camera-server found, attempting to stop it
No secondary id found for camera: tracking, assuming mono
No secondary id found for camera: hires, assuming mono
------ voxl-camera-server: Starting camera server
Attempting to open the hal module
SUCCESS: Camera module opened on attempt 0
----------- Number of cameras: 1

Cam idx: 0, Cam slot: 2, Slave Address: 0x00C0, Sensor Id: 0x7750
Successfully found configuration match for camera 0: 640x480
Allocating Buffer: 640x480 : HAL_PIXEL_FORMAT_YCBCR_420_888
Allocating Buffer: 640x480 : HAL_PIXEL_FORMAT_YCBCR_420_888
Allocating Buffer: 640x480 : HAL_PIXEL_FORMAT_YCBCR_420_888
Allocating Buffer: 640x480 : HAL_PIXEL_FORMAT_YCBCR_420_888
Allocating Buffer: 640x480 : HAL_PIXEL_FORMAT_YCBCR_420_888
Allocating Buffer: 640x480 : HAL_PIXEL_FORMAT_YCBCR_420_888
Allocating Buffer: 640x480 : HAL_PIXEL_FORMAT_YCBCR_420_888
Allocating Buffer: 640x480 : HAL_PIXEL_FORMAT_YCBCR_420_888
Allocating Buffer: 640x480 : HAL_PIXEL_FORMAT_YCBCR_420_888
Allocating Buffer: 640x480 : HAL_PIXEL_FORMAT_YCBCR_420_888
Allocating Buffer: 640x480 : HAL_PIXEL_FORMAT_YCBCR_420_888
Allocating Buffer: 640x480 : HAL_PIXEL_FORMAT_YCBCR_420_888
Allocating Buffer: 640x480 : HAL_PIXEL_FORMAT_YCBCR_420_888
Allocating Buffer: 640x480 : HAL_PIXEL_FORMAT_YCBCR_420_888
Allocating Buffer: 640x480 : HAL_PIXEL_FORMAT_YCBCR_420_888
Allocating Buffer: 640x480 : HAL_PIXEL_FORMAT_YCBCR_420_888
Entered thread: cam0-request(tid: 21393)
	Started Camera: tracking
Entered thread: cam0-result(tid: 21394)

Segmentation fault:
Fault thread: voxl-camera-ser(tid: 21362)
Fault address: 0x566016f321
Address not mapped.
Segmentation fault
voxl2:/$ voxl-camera-server -d 0
No secondary id found for camera: tracking, assuming mono
No secondary id found for camera: hires, assuming mono
------ voxl-camera-server: Starting camera server
Attempting to open the hal module
SUCCESS: Camera module opened on attempt 0
----------- Number of cameras: 2

Cam idx: 0, Cam slot: 0, Slave Address: 0x007A, Sensor Id: 0x003D
Cam idx: 1, Cam slot: 2, Slave Address: 0x00C0, Sensor Id: 0x7750
ERROR:   Camera 0 failed to find supported preview config: 640x480
ERROR:   Failed to start camera: tracking, exiting
voxl2:/$ voxl-camera-server -d 0
No secondary id found for camera: tracking, assuming mono
No secondary id found for camera: hires, assuming mono
------ voxl-camera-server: Starting camera server
Attempting to open the hal module
SUCCESS: Camera module opened on attempt 0
----------- Number of cameras: 2

Cam idx: 0, Cam slot: 0, Slave Address: 0x007A, Sensor Id: 0x003D
Cam idx: 1, Cam slot: 2, Slave Address: 0x00C0, Sensor Id: 0x7750
ERROR:   Camera 0 failed to find supported preview config: 640x480
ERROR:   Failed to start camera: tracking, exiting
voxl2:/$ 
```

## Reply by modaltb (ModalAI staff) · 2023-03-29 16:14:43 UTC

Sensor ID 0x003D is a ToF right?

Seems like you have a Tof and Tracking, but you are trying to use a configuration for tracking and hires (4).

https://docs.modalai.com/voxl2-camera-configs/#c4---tracking-and-hires-only