Fix: stm32w flasher for Ubuntu 12.04 and later

tools/stm32w/stm32w_flasher/py_files/file_utils.py

@@ -0,0 +1,83 @@
+
+# See comment in stm32w_flasher.py.
+# Extraction and little adaptation performed by E.Duble (CNRS, LIG).
+
+import struct
+
+
+class Error(Exception):
+	"""Base class for exceptions in this module."""
+	args = None
+	message = None
+
+class FileFormatError(Error):
+	"""
+	Exception raised for errors in the file format
+	
+			Attributes:
+					filename -- filename with unknown format
+					message	-- format error message
+			
+	"""
+	args = None
+	message = None
+	def __init__(self, filename, message):
+		self.filename = filename
+		self.message = message
+
+
+class fileFormatReader(object):
+	def __init__(self, filename, startAddress=None):
+		self.filename = filename
+		self.startAddress = startAddress
+
+	def getRawBinary(self):
+		fileContent = None
+		bytes = None
+		f = open(self.filename, 'rb')
+		if self.filename[-4:] == '.bin':
+			bytesRaw = f.read()
+			bytes = []
+			bytes.extend(struct.unpack(('B' * len(bytesRaw)), bytesRaw))
+			f.close()
+		else:
+			if self.filename[-4:] == '.s37':
+				fillChar = 255
+				fileContent = f.readlines()
+				f.close()
+				startAddress = None
+				currentAddress = None
+				bytes = []
+				for line in fileContent:
+					if line[:2] == 'S3':
+						count = int(line[2:4], 16)
+						if startAddress is None:
+							startAddress = int(line[4:12], 16)
+							currentAddress = startAddress
+						address = int(line[4:12], 16)
+						if currentAddress < address:
+							bytes = (bytes + ([fillChar] * (address - currentAddress)))
+							currentAddress = address
+						else:
+							if currentAddress > address:
+								raise FileFormatError(self.filename, 'S37, Non progressing addresses detected')
+						for i in range((count - 5)):
+							bytes = (bytes + [int(line[(12 + (i * 2)):((12 + (i * 2)) + 2)], 16)])
+							continue
+						currentAddress = (currentAddress + (count - 5))
+						continue
+					else:
+						if line[:2] == 'S0':
+							continue
+						else:
+							if line[:2] == 'S7':
+								break
+							else:
+								raise FileFormatError(self.filename, 'S37: unknown field type')
+				self.startAddress = startAddress
+			else:
+				raise FileFormatError(self.filename, 'Unknown extension')
+		return (self.startAddress, bytes)
+
+
+