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frontend: add Intel HEX support

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Add Intel HEX support with the help of the IHex library. IHex needed
some modifications to make it work with Python 3.

Intel HEX files are autodetected, based on file extension (.hex,
.ihx or .ihex).
This commit is contained in:
Grigori Goronzy
2015-11-24 00:33:22 +01:00
parent f452ca226e
commit 63327e3498
2 changed files with 232 additions and 2 deletions
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32
stcgal/frontend.py
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@ -25,6 +25,7 @@ import argparse
import stcgal
from stcgal.utils import Utils, BaudType
from stcgal.protocols import *
from stcgal.ihex import IHex
class StcGal:
"""STC ISP flash tool frontend"""
@ -55,11 +56,31 @@ class StcGal:
except ValueError as e:
raise NameError("invalid option '%s' (%s)" % (kv[0], e))
def load_file_auto(self, fileobj):
"""Load file with Intel Hex autodetection."""
fname = fileobj.name.lower()
if (fname.endswith(".hex") or fname.endswith(".ihx") or
fname.endswith(".ihex")):
try:
hexfile = IHex.read(fileobj)
binary = hexfile.extract_data()
print("%d bytes (Intel HEX)" %len(binary))
return binary
except ValueError as e:
raise IOError("invalid Intel HEX file (%s)" %e)
else:
binary = fileobj.read()
print("%d bytes (Binary)" %len(binary))
return binary
def program_mcu(self):
code_size = self.protocol.model.code
ee_size = self.protocol.model.eeprom
bindata = self.opts.code_binary.read()
print("Loading flash: ", end="")
sys.stdout.flush()
bindata = self.load_file_auto(self.opts.code_binary)
# warn if it overflows
if len(bindata) > code_size:
@ -70,7 +91,9 @@ class StcGal:
# add eeprom data if supplied
if self.opts.eeprom_binary:
eedata = self.opts.eeprom_binary.read()
print("Loading EEPROM: ", end="")
sys.stdout.flush()
eedata = self.load_file_auto(self.opts.eeprom_binary)
if len(eedata) > ee_size:
print("WARNING: eeprom_binary truncated!", file=sys.stderr)
eedata = eedata[0:ee_size]
@ -116,6 +139,11 @@ class StcGal:
else:
self.protocol.disconnect()
return 0
except IOError as e:
sys.stdout.flush();
print("I/O error: %s" % e, file=sys.stderr)
self.protocol.disconnect()
return 1
except NameError as e:
sys.stdout.flush();
print("Option error: %s" % e, file=sys.stderr)