[TriEmbed] Recovering from bad flash

[Ken]

Your welcome, hope it works out.

From: Michael Monaghan 
Sent: Sunday, May 29, 2016 2:56 PM
To: Ken 
Cc: Triangle Embedded Computing Discussion 
Subject: Re: [TriEmbed] Recovering from bad flash

Ken,

The 9331 boot loader doesn't do SD over SPI for boot strap.  You have however inspired low cost alternative.


- Lift _CS on the existing flash.

- Add socket jumping all signals except _CS
- Add switch for _CS lifting to vcc across 10K
- Switch to soldered flash
- Load U-Boot
- Copy flash to RAM
- Switch to socket flash
- Copy RAM to flash

Now the whole project is $6 for a pair of sockets.

Thanks for the inspiration!

Mike
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