[Hackrf-dev] HackRF-dev Digest, Vol 52, Issue 8

[Dana Shtun]

RE: Dead HackRF


Hello Michael and all. I have obtained the CPU for the hack now, Michael, you graciously offered to repair it, and I would like to know where I should send the dead board and new micro?

It does not power up and no LED's light up when plugged into the USB port.

The micro gets very hot as well, I know it runs warm, but Hot?


I've tried tracing out the path from the USB connector to determine if anything else may have died, but it seems to lead back to the microprocessor.


Anyway, I would love to get this thing going again and would appreciate the help you can provide.



Please advise


Thanks!!

Dana VE3DS


________________________________
From: HackRF-dev <hackrf-dev-bounces at greatscottgadgets.com> on behalf of hackrf-dev-request at greatscottgadgets.com <hackrf-dev-request at greatscottgadgets.com>
Sent: January 24, 2017 1:29 AM
To: hackrf-dev at greatscottgadgets.com
Subject: HackRF-dev Digest, Vol 52, Issue 8

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Today's Topics:

   1. Re: Re program the CPU ? (Dominic Spill)


----------------------------------------------------------------------

Message: 1
Date: Mon, 23 Jan 2017 18:40:22 -0700
From: Dominic Spill <dominicgs at gmail.com>
To: Ben Z en de rest <hoofdeigenwijs at gmail.com>
Cc: hackrf-dev <hackrf-dev at greatscottgadgets.com>
Subject: Re: [Hackrf-dev] Re program the CPU ?
Message-ID:
        <CACX+tOY_vxBbX6T7CWVmKuJthfj78WQ9p+dtcc3jB+gWSkeLaQ at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

On 15 January 2017 at 04:04, Ben Z en de rest <hoofdeigenwijs at gmail.com>
wrote:
>
> So, The D+ for the USB is 2 ohm to ground. Completely grounded...
>
> I found someone who can replace the processor.
>
> But what do I need after that, to get the HackRF working again ?

If the SPI flash chip is still in working order, then you may not need to
do anything, it may just work.

If not, then you'll need to use DFU mode as documented here:
https://github.com/mossmann/hackrf/wiki/Updating-Firmware#
[https://avatars1.githubusercontent.com/u/1195107?v=3&s=400]<https://github.com/mossmann/hackrf/wiki/Updating-Firmware#>

Updating Firmware · mossmann/hackrf Wiki · GitHub<https://github.com/mossmann/hackrf/wiki/Updating-Firmware#>
github.com
HackRF devices ship with firmware on the SPI flash memory and with a bitstream programmed onto the CPLD. The firmware can be updated with nothing more than a USB ...



only-if-necessary-dfu-boot, followed by a regular firmware update.

> The Hack RF is still working with the Porta Pack, I can control it and it
still does receive.
> and my computers have a good earth connection now.

If the PortaPack is still working then the microcontroller (LPC4320) is
still working.  There's a fair chance that all you've damaged is the USB
ESD protection, which is designed to protect the microcontroller from this
sort of thing.
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