Re: [flashrom] Flashrom Serprog Arduino Uno Winbond 25Q32BVSIG

[Stefan Tauner]

On Sun, 7 Dec 2014 20:09:45 +0000
Paulo Ribeiro  wrote:
> I finally managed to get the chip recognised by flashrom using the following circuit:
>
> Chip --- Arduino
>   1            10
>   2            12
>   3            3.3V
>   4            GND
>   5            11
>   6            13
>   7            3.3V
>   8            3.3V
>
> The problem now is with the reading. With the flag -VVVr I get the following:
>
> Reading flash... serprog_spi_send_command, writecnt=4, readcnt=65536
> serprog_spi_send_command, writecnt=4, readcnt=65536
> serprog_spi_send_command, writecnt=4, readcnt=65536
> serprog_spi_send_command, writecnt=4, readcnt=65536
> serprog_spi_send_command, writecnt=4, readcnt=65536
> serprog_spi_send_command, writecnt=4, readcnt=65536
>
> It outputs a different number of lines each time but always stops. Any idea what the problem may be? Any help will be greatly appreciated.

Hi,

there are some reliability issues with the Arduino Uno and I think they
are related to the 16U2 firmware (which is responsible for the
USB<->UART translation on the Uno). I don't know the details though,
sorry.