colbro51
commented
2 years ago Finally success at last! By writing myself a dummy serial interface and examining the commands being sent to the K150 I was able to convince myself that by only putting the rom code in the hex file and using the command line fuse overrides and forgetting about the ID value it should work when I commented out the erase, eeprom programming and verification code. By reading the device after programming I was able to verify the write. I attach my dummy serial interface code "cbserial.py".
#
# Serial wrapper - locate in site-packages/picpro directory
#
# Modify picpro.py:
# line 40: "import serial" --> "from picpro.cbserial import Serial"
# line 186: "s = serial.Serial" --> "s = Serial"
# Modify ProtocolInterface.py
# line 4: "import serial" --> "from picpro.cbserial import Serial"
#
# Command documentation: http://www.kitsrus.com/zip/softprotocol5.zip
#
import pprint
import sys
import serial
import easygui as eg
class Serial(serial.Serial):
is_open = True
_port_handle = None
timeout = 0
def __init__(self, *args, **kargs):
self.rcvd = '__init__'
self.header = 'Hello programmer!'.encode('utf-8')
self.socket = False
self.progRom = False
self.rom = []
def read(self, number):
# Choose either display for single stepping or log for file output
display = True
log = False
if self.progRom:
if self.progsize:
if len(self.rcvd) != 32:
eg.exceptionbox('Expected 32 bytes in prog mode')
title = '32 bytes prog data of '+str(self.progsize)
self.progsize -= 32
response = b'Y'
self.rom.append(self.rcvd)
else:
title = 'finished prog'
response = b'P'
self.progRom = False
elif self.rcvd == '__init__':
self.rcvd = b''
response = b'B\x03'
title = 'K150 Power-Up'
elif self.rcvd == b'\x01':
title = 'Command end / Escape jump table to command start'
response = b'Q'
elif self.rcvd == b'P':
title = 'Goto jump table from command start'
response = b'P'
elif self.rcvd and self.rcvd in self.header:
title = 'Echo character'
response = self.rcvd
display = False
elif self.rcvd == b'\x12':
title = 'Detect chip in socket - no'
response = b'A'
self.socket = True
elif self.socket:
title = 'Detect chip in socket - yes'
response = b'Y'
self.socket = False
elif self.rcvd == b'\x04':
title = 'Turn on programming voltages'
response = b'V'
elif self.rcvd == b'\x02\x00\x00\x00\x04\x01\x01\x02\x00\x01\x00':
title = 'Initialise programming variables'
response = b'I'
elif self.rcvd == b'\x0b':
title = 'Read ROM'
if not self.rom:
# a real example value for MOVLW instruction as returned
response = (b'\xff\x0f')*(number//4 - 1) + b'\x74' + b'\x0C'
else:
# CORRECT RESPONSE here commented out
# response = b''.join(self.rom)[:-2] + b'\x74' + b'\x0C'
response = b''.join(self.rom)
elif self.rcvd == b'\x05':
title = 'Turn off programming voltages'
response = b'v'
elif self.rcvd == b'\x0e':
title = 'Erase chip'
response = b'Y'
elif self.rcvd == b'\x06':
title = 'Program ROM'
response = b'\xff' # not checked
elif self.rcvd == b'\x02\x00':
title = 'ROM size: word High/Low'
response = b'Y'
self.progRom = True
self.progsize = 512*2 # bytes = 2*words
elif self.rcvd.startswith(b'00') and self.rcvd.endswith(b'\xff\xff\xff\xff'):
response = b'Y'
title = 'Program ID fuses'
else:
title = 'Unknown command?'
response = b'\xff'*number
msg = 'Rcvd: %s; Want %s bytes; Rtn: %s' % \
(repr(self.rcvd), number, repr(response))
if display:
if not eg.ccbox(msg, title):
sys.exit(0)
elif log:
with open('k150.log','a') as fobj:
fobj.write(title+'\n')
pprint.pprint(msg, stream=fobj)
fobj.write('\n')
self.rcvd = b''
return response
def write(self, data):
self.rcvd = data
Hi again
I finally got around trying to actually program a chip with the following hex file data:
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and the program failed as below:
`picpro program -p /dev/ttyUSB0 -i .prog.hex -t 12C508A
Waiting for user to insert chip into socket with pin 1 at socket pin 13 Chip detected. Traceback (most recent call last): File "/home/colin/.local/bin/picpro", line 8, in
sys.exit(main())
File "/home/colin/.local/lib/python3.8/site-packages/picpro/bin/picpro.py", line 434, in main
getattr(command, 'chosen')() # Execute the function specified by the user.
File "/home/colin/.local/lib/python3.8/site-packages/picpro/bin/picpro.py", line 98, in program
program_pic(
File "/home/colin/.local/lib/python3.8/site-packages/picpro/bin/picpro.py", line 365, in program_pic
rom_data, eeprom_data, id_data, fuse_values = prepare_flash_data_from_hex_file(chip_info, hex_file, pic_id, fuses)
File "/home/colin/.local/lib/python3.8/site-packages/picpro/bin/picpro.py", line 294, in prepare_flash_data_from_hex_file
rom_data = merge_records(rom_records, rom_blank)
File "/home/colin/.local/lib/python3.8/site-packages/picpro/tools.py", line 59, in merge_records
raise IndexError('Record out of range.')
IndexError: Record out of range.`
Working through the code I found that the ID and fuse data is ending up in the rom data, thus the "record out of range". If I remove both of these from my hex file as a test then the error does not occur. The program does not appear to correctly interpret the hex addressing of ID and flags as per the PIC documentation.
However with this test another issue arises as the output then comes back with "Erasing chip". This chip is not erasable! I would suggest the chipinfo flag is not being checked.
Cheers Colin