[flashrom] Arduino LPC flasher?

[Benjamin Henrion]

On Sun, Mar 27, 2011 at 2:10 PM, Stefan Tauner
<stefan.tauner at student.tuwien.ac.at> wrote:
> On Sun, 27 Mar 2011 13:25:05 +0200
> Benjamin Henrion <bh at udev.org> wrote:
>
>> Hi,
>>
>> I am trying to port this code to an Arduino Duemilanove (atmega328p):
>>
>> http://mikestirling.co.uk/2010/08/programming-an-lpc-flash-with-an-avr-and-flashrom/
>>
>> When I change the chip to atmega168, I have the following error:
>>
>> avr-gcc -c -mmcu=atmega168 -I. -g -Os -funsigned-char
>> -funsigned-bitfields -fpack-struct -fshort-enums -Wall
>> -Wstrict-prototypes -Wa,-adhlns=uart.lst  -std=gnu99 -DF_CPU=7372800
>> -Wp,-M,-MP,-MT,uart.o,-MF,.dep/uart.o.d uart.c -o uart.o
>> uart.c: In function ‘__vector_18’:
>> uart.c:65: error: ‘_UDR’ undeclared (first use in this function)
>> uart.c:65: error: (Each undeclared identifier is reported only once
>> uart.c:65: error: for each function it appears in.)
>> uart.c: In function ‘__vector_19’:
>> uart.c:83: error: ‘_UDR’ undeclared (first use in this function)
>> uart.c: In function ‘uart_init’:
>> uart.c:281: error: ‘_UBRR’ undeclared (first use in this function)
>> make: *** [uart.o] Error 1
>>
>> Any idea what to change?
>>
>> Having a simple Arduino being able to flash BIOS chips would be
>> awesome...
>>
>
> the register names for the uart are probably different. e.g. for my
> atmega32u2 i would have to use UDR1 and UBRR1[H|L].
> just look it up in the datasheet or /usr/lib/avr/include/avr/.
> HTH

I have replaced all the _UDR references directly by UDR0, the same for
_UBRR, and it compiles fine now.

Now the Arduino Duemilanove can work in 3.3V if I am not mistaken, I
tried in 5V, it gives me the following error:

 #  flashrom -p serprog:/dev/ttyUSB0:115200
flashrom v0.9.2-r1028 on Linux 2.6.35-27-generic (x86_64), built with
libpci 3.0.0, GCC 4.4.4, little endian
flashrom is free software, get the source code at http://www.flashrom.org

Calibrating delay loop... OK.
Error: cannot synchronize protocol
- check communications and reset device?

-- 
Benjamin Henrion <bhenrion at ffii.org>
FFII Brussels - +32-484-566109 - +32-2-4148403
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