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Messages - broeggle

17
Bus Pirate Support / Re: Linux - Bootloader-Programmer
I asked one of my university teachers if he has one for me - maybe I'm lucky.

Isn't it possible to set the config vars using the windows-programmer? (unfortunately I don't have the menu for it?)
18
Bus Pirate Support / Re: Linux - Bootloader-Programmer
yeah -it's the same for every location - of course I've tried erasing the board, but the values still remain the same.

I experimented a bit using my api - and made the following observations
I can read flash. EEDATA and CONFIG - i.e. the values remain the same after wrting.
I can't write flash , EEDATA but I can write to config - however if I unplug the bp the values are resetted.

--> maybe I have enabled some write protection by setting (random) values to the config?
19
Bus Pirate Support / Re: Linux - Bootloader-Programmer
hmm bad news - I tried flashing again and had a look at the error report :/

[tt:]Verify Error at 0x4 should be: 0x82EC but read: 0xFFFFFF
Verify Error at 0x6 should be: 0x82EC but read: 0xFFFFFF
Verify Error at 0x8 should be: 0x82EC but read: 0xFFFFFF
.....
Verify Error at 0x82E6 should be: 0x6 but read: 0xFFFFFF
Verify Error at 0x82E8 should be: 0x0 but read: 0xFFFFFF
Verify Error at 0x82EA should be: 0x0 but read: 0xFFFFFF
Verify Error at 0x82EC should be: 0xFE0000 but read: 0xFFFFFF
Verify Error at 0xABFC should be: 0xF9DF but read: 0xFFFFFF
Verify Error at 0xABFE should be: 0x3F7F but read: 0xFFFFFF[/tt:]
20
Bus Pirate Support / Re: Linux - Bootloader-Programmer
no problem ian, don't worry - we'll find the solution:)
can you perhaps make a dump (i.e. read device in the windows programmer) and post it somewhere?
Then I can compare it to my dump and spot the differences and start guessing :)

Thanks,
22
Bus Pirate Support / Re: Linux - Bootloader-Programmer
@ian:
hi - is there any posibility that I could have messed up the bootloader ?
I mean it still reports its version - however even after uploading the current firmware with windows I can't access the bus pirate's menu :/ - The update proceedure seems to work quite fine.

Are there any special values that don't get written via the programmer that are necessary? ( eeprom, flash, data memory config memory) ?

Would be nice if you/someone could give me any hints how I can revive my bus-pirate :)


Thanks,
23
Bus Pirate Support / Re: Linux - Bootloader-Programmer
hehe - no flowcontrol -> it works!

Code: [Select]
import serial
ser = serial.Serial('/dev/ttyUSB0', 9600,bytesize=8, parity='N', stopbits=1, timeout=None, xonxoff=0, rtscts=0)
ser.write("x55x550x02xFEx04")
#ser.write("x55x55x01x00x00xFFx47x05x04")
print "reading!"
x=ser.read(8);
for i in x:
    print hex(ord(i)),

print
Results in
[tt:]0x55 0x55 0x0 0x2 0x2 0x1 0xfb 0x4[/tt:]
-> the bootloader version is 0x1 0x2
which is defined in the config.h
Code: [Select]
//Bootloader Operation Configuration
#define MAJOR_VERSION       0x01    //Bootloader FW version
#define MINOR_VERSION       0x02

--> It works! yeah.
Now I can implement the rest of the bootloader :)
24
Bus Pirate Support / Re: Linux - Bootloader-Programmer
hmm - I changed it - but it still does not work :/
Seems I have to read the AN more throughly  and perhaps study the code.

Do you perhaps know if the bootloader uses any hardware/software flowcontrol?

Thanks
25
Bus Pirate Support / Re: Linux - Bootloader-Programmer
Thanks ian - very nice.

Especially thanks for the link - there stx is defined in this AN as 0x55 instead of 0x02 :)
--> Now it's obvious why it didn't work :)
I'll continue hacking on the programmer and report my progress here - thanks!
26
Bus Pirate Support / Re: Linux - Bootloader-Programmer
And here's the patch - but programming/erasing still not possible :/
Is there anything else I have to do than to put a jumper between PGD and PGC?
Code: [Select]
diff -uNpr an851host.c{,.orig}
--- an851host.c 2009-07-24 17:07:17.000000000 +0200
+++ an851host.c.orig    2009-07-24 17:06:23.000000000 +0200
@@ -260,7 +260,7 @@ void setline(int fd, int flags, int spee
        tcsetattr(fd, TCSANOW, &t);
 }

-void usage(char* argv0)
+void usage(argv0)
 {
        printf("To read from flash Memory: n");
        printf("tusage: %s --readflash --bytes <n> --startaddr <x>n", argv0);
@@ -280,7 +280,7 @@ void usage(char* argv0)
        printf("t  eg: %s --rows 3 --startaddr 0x01320nn", argv0);

        printf("nTo reset PIC via bootloader: n");
-       printf("tusage: %s --resetn",argv0);
+       printf("tusage: %s --resetn");
        close(fd);
        exit(-1);
 }
27
Bus Pirate Support / Linux - Bootloader-Programmer
Hi,
I'm currently trying to implement a linux - bootloader programmer for the bus pirate.
In this thead I want to report my progress - and if you would like to help, feel free to contact me.
Another reason I post my progress here is that you can tell me if I do something horribly wrong.

I checked out the svn repo and had a look at the sources.
-> The bootloader is based on the an851 - Application Note can be found here:
http://ww1.microchip.com/downloads/en/A ... 00851b.pdf
More information could be found here:
http://www.microchip.com/Stellent/idcpl ... e=en012031

I also found a linux programmer
http://cockpit.varxec.net/software/pic.html
 - but unfortunately it does not work that well - starting it without any params results in a segfault:
(gdb) r
Starting program: /data/an851/an851host
To read from flash Memory:

Program received signal SIGSEGV, Segmentation fault.
0x00007f994b1be480 in strlen () from /lib/libc.so.6

--> I will investigate these issues later on and provide a patch, but as I want to write a portable client I stick with python an pyserial, using the programms source-code as a reference.


Let's start:
* According to the source the bootloader operates at 9600 baud, 8N1  (however it should have an autobaud feature)
* According to AN p.3 the format is [...]
where STX = 0x0f , ETX=0x04 , CHECKSUM is the 2's complement of the lower byte of the sum of all data.
* On page 9 the read bootloader version information is 0x00 0x02

So my source looks like
Code: [Select]
import serial
ser = serial.Serial('/dev/ttyUSB0', 9600,bytesize=8, parity='N', stopbits=1, timeout=None, xonxoff=0, rtscts=0)

ser.write("x0Fx0Fx00x02xFEx04")

print "reading?"
print ser.read(4)

However I don't receive any data :/

Can somebody perhaps log what the original pic programmer sends over the serial line? - would be cool.
29
Bus Pirate Support / Problems with 1-wire
Hi,

as I already have [s:]spammed[/s:] written in the hackaday comments section http://hackaday.com/2009/07/20/parts-unboxing-the-bus-pirate/ I have some problems with the 1-wire bus.

The search (240) and the read rom macros (51) work quite fine - however if I want to write/read something from the device I receive not the expected values

Code: [Select]
1-WIRE>(240)
1WIRE ROM COMMAND: SEARCH (0xF0)
Found devices at:
Macro 1WIRE address
1.0×2D 0xB7 0xDC 0xEF 0×00 0×00 0×00 0xF9
*DS2431 1K EEPROM
Found 0×01 devices.
The first 10 device IDs are available by MACRO, see (0).

1-WIRE>(85)(1) 0xf0 0×00 0×00 0 1 2 3 4 5 6 7
1WIRE BUS RESET OK
1WIRE WRITE ROM COMMAND: MATCH (0×55) *follow with 64bit address
1WIRE ADDRESS MACRO 1: 0×2D 0xB7 0xDC 0xEF 0×00 0×00 0×00 0xF9
WRITE: 0xF0
WRITE: 0×00
WRITE: 0×00
WRITE: 0×00
WRITE: 0×01
WRITE: 0×02
WRITE: 0×03
WRITE: 0×04
WRITE: 0×05
WRITE: 0×06
WRITE: 0×07

1-WIRE>(85)(1) 0xaa r:3 r:8 R:2 r:2
1WIRE BUS RESET OK
1WIRE WRITE ROM COMMAND: MATCH (0×55) *follow with 64bit address
1WIRE ADDRESS MACRO 1: 0×2D 0xB7 0xDC 0xEF 0×00 0×00 0×00 0xF9
WRITE: 0xAA
BULK READ 0×03 BYTES:
0xFF 0xFF 0xFF # WRONG – should be 0×00 0×00 0×07;
BULK READ 0×08 BYTES:
0xBF 0xE7 0×83 0xFF 0xFF 0xFF 0xFF 0xFF
BULK READ 0×02 BYTES:
0xFF 0xFF
BULK READ 0×02 BYTES:
0xFF 0xFF


I tried it with a 1k and 2.2k and 4.7kohm external pullup, I use the same ds2431 as hackaday
http://hackaday.com/2008/12/24/parts-1k-1-wire-eeprom-ds2431/

Any ideas?

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