thalangeajit
Posts: 8
Joined: Fri Feb 17, 2017 12:19 pm

Compute Module 3 Not Detecting

Fri Apr 07, 2017 2:17 pm

Hi Friends,
I bought a new cm3 and loaded Raspbian Jessie Lite, now i want to load other OS for that followed the same steps which i used t load Raspbian Jessie from
https://www.raspberrypi.org/documentat ... ashing.md
But this time as i soon as i plug the CM3 it's not been detected by my PC. So Rpi Boot.exe is giving output as "waiting for BCM283xx". Tried changing USB cables, with different PC/laptop, Windows/Ubuntu nothing is working.

Is the onboard emmc got damaged...? But it is loading the Raspbian Jessie Lite successfully

Please Help
Thanks

jamesh
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
Posts: 19615
Joined: Sat Jul 30, 2011 7:41 pm

Re: Compute Module 3 Not Detecting

Fri Apr 07, 2017 3:16 pm

Have you switched the programming link correctly?
Principal Software Engineer at Raspberry Pi (Trading) Ltd.
Please direct all questions to the forum, I do not do support via PM.

thalangeajit
Posts: 8
Joined: Fri Feb 17, 2017 12:19 pm

Re: Compute Module 3 Not Detecting

Fri Apr 07, 2017 3:23 pm

Yes... As mentioned in documentation...

thalangeajit
Posts: 8
Joined: Fri Feb 17, 2017 12:19 pm

Re: Compute Module 3 Not Detecting

Sat Apr 08, 2017 5:31 am

Below is the Image of USB Slave Boot Enable Pin i am setting to boot the board into boot mode.
Is this correct or not.... In this pin setup itself i loaded Raspbian jessie Lite And the same is also given in the documentation

Thanks
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thalangeajit
Posts: 8
Joined: Fri Feb 17, 2017 12:19 pm

Re: Compute Module 3 Not Detecting

Sat Apr 08, 2017 5:35 am

jamesh wrote:Have you switched the programming link correctly?
programming link ?.... it's the J4 connector itself right ?
it's connected between middle and top pins

johnwallace123
Posts: 16
Joined: Tue Feb 28, 2017 12:35 am

Re: Compute Module 3 Not Detecting

Mon Apr 10, 2017 2:16 pm

One thing to try is connecting the OTGID pin to 3V3 (or, if you're concerned about frying your CM3 doing that, connect to 5V with a ~500 ohm resistor). This will ensure that if the "program_usb_mode" OTP bit is set, the CM3 will boot in device mode instead of host mode.

With the usb boot mode OTP bit set, the OTGID pin needs to be pulled high (+3.3V) to boot in device mode. However, the CMIO board pulls the OTGID pin to ground via a 1k resistor.

thalangeajit
Posts: 8
Joined: Fri Feb 17, 2017 12:19 pm

Re: Compute Module 3 Not Detecting

Mon Apr 10, 2017 2:33 pm

I am new to r pi cm3, Actually what will happen by doing this... ?

adamrankin
Posts: 1
Joined: Sun Aug 06, 2017 8:52 pm

Re: Compute Module 3 Not Detecting

Sun Aug 06, 2017 8:53 pm

I am experiencing the same issue. I am unable to detect my CM3 via CMIO following https://www.raspberrypi.org/documentati ... lashing.md

Does anyone know how to diagnose a hardware fault?

wittend
Posts: 12
Joined: Wed May 08, 2013 3:13 pm

Re: Compute Module 3 Not Detecting

Fri Aug 11, 2017 4:15 pm

Me too. On two different modules, and using both Win7 and Ubuntu 16.04.

sdneiman
Posts: 1
Joined: Thu Dec 21, 2017 8:34 pm

Re: Compute Module 3 Not Detecting

Thu Dec 21, 2017 8:43 pm

I have the exact same issue. New cm3 and io board. cm3 properly installed, j4 set up properly. ubuntu 16.04 host (system76 bonobo) - install requirements and usbtools. build rpiboot. follow instructions precisely wrt j4 pins, and connect and power up sequence.

result is hanging waiting for BCM2835/6/7
no activity in dmesg, or lsusb.
KNOWN GOOD cables and ports.
Swapped cables, rebuilt rpi, updated host os - all the normal goodies. no change in results.

Looks like a bad io module to me - but don't want to complain to vendor until I am sure. Am I missing anything?

Any and all comments welcome,

seth

gsh
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
Posts: 1263
Joined: Sat Sep 10, 2011 11:43 am

Re: Compute Module 3 Not Detecting

Wed Dec 27, 2017 10:21 pm

Can you try with a Raspberry Pi as the host to confirm it's nothing to do with Ubuntu or your version of the libusb drivers

Gordon
--
Gordon Hollingworth PhD
Raspberry Pi - Director of Software Engineering

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