Issues with AT28C256 Reading / Writing

[datapaganism]

Hello I have bought the relatively universal programmer and did the rev 2 mod on mine, I am running the latest FW at the moment and am I having problems flashing / reading from the board

I have a file called 1.bin which is 32Kb of random data, and another which is a dump from the Chip after I flash it

Reading the eeprom after writing to it reveals that only some of it has been properly burned.

Is the setup of my programmer, I believe I have set the jumpers correctly.

Given that I can burn and read it, its not 100% dead is it?

log is

PS D:\dev\firestarter-1.0.13> firestarter write at28c256 .\1.bin
Writing to chip: AT28C256
Connected to programmer
Reading from input file: .\1.bin
Sending file .\1.bin in blocks of 512 bytes
100%, address: 0x7E00 - 0x8000
File sent successfully in 339.49 seconds
PS D:\dev\firestarter-1.0.13> firestarter read at28c256
Reading chip: AT28C256
Connected to programmer
Output will be saved to: AT28C256.bin
100%, address: 0x7E00 - 0x8000
Finished reading data
Data received in 7.10 seconds

Am I doing something wrong?

[henols]

Try to update FW and app and give it another shot. Get back if the issue is still there.

…

On Thu, 26 Sept 2024, 20:28 Alen Karnil, ***@***.***> wrote: Hello I have bought the relatively universal programmer and did the rev 2 mod on mine, I am running the latest FW at the moment and am I having problems flashing / reading from the board I have a file called 1.bin which is 32Kb of random data, and another which is a dump from the Chip after I flash it image.png (view on web) <https://github.com/user-attachments/assets/a47f7aae-9298-4cc0-8913-10b5c88235b6> Reading the eeprom after writing to it reveals that only some of it has been properly burned. 20240926_192523.jpg (view on web) <https://github.com/user-attachments/assets/43b5dbb2-e804-4e8d-9168-151b2597c4ae> Is the setup of my programmer, I believe I have set the jumpers correctly. Given that I can burn and read it, its not 100% dead is it? log is PS D:\dev\firestarter-1.0.13> firestarter write at28c256 .\1.bin Writing to chip: AT28C256 Connected to programmer Reading from input file: .\1.bin Sending file .\1.bin in blocks of 512 bytes 100%, address: 0x7E00 - 0x8000 File sent successfully in 339.49 seconds PS D:\dev\firestarter-1.0.13> firestarter read at28c256 Reading chip: AT28C256 Connected to programmer Output will be saved to: AT28C256.bin 100%, address: 0x7E00 - 0x8000 Finished reading data Data received in 7.10 seconds Am I doing something wrong? — Reply to this email directly, view it on GitHub <#10>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AATJAYZWJHRZKW5PQGXRLCTZYRG37AVCNFSM6AAAAABO5TFGEGVHI2DSMVQWIX3LMV43ASLTON2WKOZSGU2TCMRXGA2TIMQ> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[datapaganism]

Cannot update to 1.1.20

PS D:\dev\firestarter-1.0.13> pip install firestarter==1.1.20
Collecting firestarter==1.1.20
  Using cached firestarter-1.1.20-py3-none-any.whl.metadata (8.1 kB)
Collecting argparse (from firestarter==1.1.20)
  Using cached argparse-1.4.0-py2.py3-none-any.whl.metadata (2.8 kB)
Requirement already satisfied: pyserial in c:\users\afk\appdata\local\programs\python\python38\lib\site-packages (from firestarter==1.1.20) (3.5)
Requirement already satisfied: requests in c:\users\afk\appdata\local\programs\python\python38\lib\site-packages (from firestarter==1.1.20) (2.32.3)
Requirement already satisfied: charset-normalizer<4,>=2 in c:\users\afk\appdata\local\programs\python\python38\lib\site-packages (from requests->firestarter==1.1.20) (3.3.2)
Requirement already satisfied: idna<4,>=2.5 in c:\users\afk\appdata\local\programs\python\python38\lib\site-packages (from requests->firestarter==1.1.20) (3.7)
Requirement already satisfied: urllib3<3,>=1.21.1 in c:\users\afk\appdata\local\programs\python\python38\lib\site-packages (from requests->firestarter==1.1.20) (2.2.3)
Requirement already satisfied: certifi>=2017.4.17 in c:\users\afk\appdata\local\programs\python\python38\lib\site-packages (from requests->firestarter==1.1.20) (2024.8.30)
Using cached firestarter-1.1.20-py3-none-any.whl (64 kB)
Using cached argparse-1.4.0-py2.py3-none-any.whl (23 kB)
Installing collected packages: argparse, firestarter
  Attempting uninstall: firestarter
    Found existing installation: firestarter 1.1.18
    Uninstalling firestarter-1.1.18:
      Successfully uninstalled firestarter-1.1.18
Successfully installed argparse-1.4.0 firestarter-1.1.20
PS D:\dev\firestarter-1.0.13> firestarter
Traceback (most recent call last):
  File "c:\users\afk\appdata\local\programs\python\python38\lib\runpy.py", line 194, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "c:\users\afk\appdata\local\programs\python\python38\lib\runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "C:\Users\afk\AppData\Local\Programs\Python\Python38\Scripts\firestarter.exe\__main__.py", line 4, in <module>
  File "c:\users\afk\appdata\local\programs\python\python38\lib\site-packages\firestarter\main.py", line 22, in <module>
    from . import ic_layout as ic
  File "c:\users\afk\appdata\local\programs\python\python38\lib\site-packages\firestarter\ic_layout.py", line 167
    print(f"Flags Value: 0x{eprom["flags"]:08X}")
                                   ^
SyntaxError: invalid syntax
PS D:\dev\firestarter-1.0.13>

[henols]

Thanks will fix that asap

…

On Thu, 3 Oct 2024, 09:06 Alen Karnil, ***@***.***> wrote: Cannot update to 1.1.20 PS D:\dev\firestarter-1.0.13> pip install firestarter==1.1.20 Collecting firestarter==1.1.20 Using cached firestarter-1.1.20-py3-none-any.whl.metadata (8.1 kB) Collecting argparse (from firestarter==1.1.20) Using cached argparse-1.4.0-py2.py3-none-any.whl.metadata (2.8 kB) Requirement already satisfied: pyserial in c:\users\afk\appdata\local\programs\python\python38\lib\site-packages (from firestarter==1.1.20) (3.5) Requirement already satisfied: requests in c:\users\afk\appdata\local\programs\python\python38\lib\site-packages (from firestarter==1.1.20) (2.32.3) Requirement already satisfied: charset-normalizer<4,>=2 in c:\users\afk\appdata\local\programs\python\python38\lib\site-packages (from requests->firestarter==1.1.20) (3.3.2) Requirement already satisfied: idna<4,>=2.5 in c:\users\afk\appdata\local\programs\python\python38\lib\site-packages (from requests->firestarter==1.1.20) (3.7) Requirement already satisfied: urllib3<3,>=1.21.1 in c:\users\afk\appdata\local\programs\python\python38\lib\site-packages (from requests->firestarter==1.1.20) (2.2.3) Requirement already satisfied: certifi>=2017.4.17 in c:\users\afk\appdata\local\programs\python\python38\lib\site-packages (from requests->firestarter==1.1.20) (2024.8.30) Using cached firestarter-1.1.20-py3-none-any.whl (64 kB) Using cached argparse-1.4.0-py2.py3-none-any.whl (23 kB) Installing collected packages: argparse, firestarter Attempting uninstall: firestarter Found existing installation: firestarter 1.1.18 Uninstalling firestarter-1.1.18: Successfully uninstalled firestarter-1.1.18 Successfully installed argparse-1.4.0 firestarter-1.1.20 PS D:\dev\firestarter-1.0.13> firestarter Traceback (most recent call last): File "c:\users\afk\appdata\local\programs\python\python38\lib\runpy.py", line 194, in _run_module_as_main return _run_code(code, main_globals, None, File "c:\users\afk\appdata\local\programs\python\python38\lib\runpy.py", line 87, in _run_code exec(code, run_globals) File "C:\Users\afk\AppData\Local\Programs\Python\Python38\Scripts\firestarter.exe\__main__.py", line 4, in <module> File "c:\users\afk\appdata\local\programs\python\python38\lib\site-packages\firestarter\main.py", line 22, in <module> from . import ic_layout as ic File "c:\users\afk\appdata\local\programs\python\python38\lib\site-packages\firestarter\ic_layout.py", line 167 print(f"Flags Value: 0x{eprom["flags"]:08X}") ^ SyntaxError: invalid syntax PS D:\dev\firestarter-1.0.13> — Reply to this email directly, view it on GitHub <#10 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AATJAYZMBXXA5IHT6IZD4CDZZTUGNAVCNFSM6AAAAABO5TFGEGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDGOJQGY3TMNZVG4> . You are receiving this because you commented.Message ID: ***@***.***>

[henols]

A new release is created. Please update the Python app. pip upgrade firestarter

…

On Thu, 3 Oct 2024 at 10:01, Henrik Olsson ***@***.***> wrote: Thanks will fix that asap On Thu, 3 Oct 2024, 09:06 Alen Karnil, ***@***.***> wrote: > Cannot update to 1.1.20 > > PS D:\dev\firestarter-1.0.13> pip install firestarter==1.1.20 > Collecting firestarter==1.1.20 > Using cached firestarter-1.1.20-py3-none-any.whl.metadata (8.1 kB) > Collecting argparse (from firestarter==1.1.20) > Using cached argparse-1.4.0-py2.py3-none-any.whl.metadata (2.8 kB) > Requirement already satisfied: pyserial in c:\users\afk\appdata\local\programs\python\python38\lib\site-packages (from firestarter==1.1.20) (3.5) > Requirement already satisfied: requests in c:\users\afk\appdata\local\programs\python\python38\lib\site-packages (from firestarter==1.1.20) (2.32.3) > Requirement already satisfied: charset-normalizer<4,>=2 in c:\users\afk\appdata\local\programs\python\python38\lib\site-packages (from requests->firestarter==1.1.20) (3.3.2) > Requirement already satisfied: idna<4,>=2.5 in c:\users\afk\appdata\local\programs\python\python38\lib\site-packages (from requests->firestarter==1.1.20) (3.7) > Requirement already satisfied: urllib3<3,>=1.21.1 in c:\users\afk\appdata\local\programs\python\python38\lib\site-packages (from requests->firestarter==1.1.20) (2.2.3) > Requirement already satisfied: certifi>=2017.4.17 in c:\users\afk\appdata\local\programs\python\python38\lib\site-packages (from requests->firestarter==1.1.20) (2024.8.30) > Using cached firestarter-1.1.20-py3-none-any.whl (64 kB) > Using cached argparse-1.4.0-py2.py3-none-any.whl (23 kB) > Installing collected packages: argparse, firestarter > Attempting uninstall: firestarter > Found existing installation: firestarter 1.1.18 > Uninstalling firestarter-1.1.18: > Successfully uninstalled firestarter-1.1.18 > Successfully installed argparse-1.4.0 firestarter-1.1.20 > PS D:\dev\firestarter-1.0.13> firestarter > Traceback (most recent call last): > File "c:\users\afk\appdata\local\programs\python\python38\lib\runpy.py", line 194, in _run_module_as_main > return _run_code(code, main_globals, None, > File "c:\users\afk\appdata\local\programs\python\python38\lib\runpy.py", line 87, in _run_code > exec(code, run_globals) > File "C:\Users\afk\AppData\Local\Programs\Python\Python38\Scripts\firestarter.exe\__main__.py", line 4, in <module> > File "c:\users\afk\appdata\local\programs\python\python38\lib\site-packages\firestarter\main.py", line 22, in <module> > from . import ic_layout as ic > File "c:\users\afk\appdata\local\programs\python\python38\lib\site-packages\firestarter\ic_layout.py", line 167 > print(f"Flags Value: 0x{eprom["flags"]:08X}") > ^ > SyntaxError: invalid syntax > PS D:\dev\firestarter-1.0.13> > > > — > Reply to this email directly, view it on GitHub > <#10 (comment)>, > or unsubscribe > <https://github.com/notifications/unsubscribe-auth/AATJAYZMBXXA5IHT6IZD4CDZZTUGNAVCNFSM6AAAAABO5TFGEGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDGOJQGY3TMNZVG4> > . > You are receiving this because you commented.Message ID: > ***@***.***> >

-- Work greener, don't print unless you need to!

[datapaganism]

Updated firestarter but got the same result
Here is my powershell log

PS D:\dev\firestarter-1.0.13> firestarter write at28c256 .\1.bin
Writing to chip: AT28C256
Connected to programmer
Reading from input file: .\1.bin
Sending file .\1.bin in blocks of 512 bytes
100%, address: 0x7E00 - 0x8000
File sent successfully in 340.03 seconds
PS D:\dev\firestarter-1.0.13> firestarter read at28c256
Reading chip: AT28C256
Connected to programmer
Output will be saved to: AT28C256.bin
100%, address: 0x7E00 - 0x8000
Finished reading data
Data received in 7.23 seconds

[henols]

Have youi updated th FW?
firestarter fw --install

[datapaganism]

It was on 1.1.1 or something

…

On Fri, 4 Oct 2024, 09:01 Henrik Olsson, ***@***.***> wrote: Have youi updated th FW? firestarter fw --install — Reply to this email directly, view it on GitHub <#10 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ARLMRVLJAE5MLEQFQLZE4O3ZZZDMTAVCNFSM6AAAAABO5TFGEGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDGOJTGA4DENJQGA> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[AndersBNielsen]

When programming more than a single byte the 28C256 goes into page write mode. In page write mode it accepts up to 64 bytes - if more than 64 bytes are clocked in, the remaining ones are ignored until the 150us timeout occurs, at which point the page is latched. This explains many strange issues with this series.

Workaround 1) 150us + write time delay for each byte. (10ms max)
Woraround 2) Set firestarter buffer to 64 bytes instead of 512

Fix 1) Ensure no further bytes are written after 64 bytes before 150us have elapsed + page write time (10ms max or polling).