--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/python/utils/st-flash.py	Wed Nov 27 08:06:42 2013 +0100
@@ -0,0 +1,81 @@
+#!/usr/bin/python
+
+import argparse, sys
+import stlink, stm32
+import hexfile
+
+def hex2int(s):
+   if s.startswith('0x'):
+      s = s[2:]
+      return int(s, 16)
+   raise ValueError('Hexadecimal value must begin with 0x')
+
+parser = argparse.ArgumentParser(
+   description='ST-link flash utility by Windel Bouwman')
+subparsers = parser.add_subparsers(title='commands', 
+         description='possible commands', dest='command')
+
+readparser = subparsers.add_parser('read', help='read flash contents')
+readparser.add_argument('filename', type=argparse.FileType('wb', 0))
+readparser.add_argument('address', type=hex2int)
+readparser.add_argument('size', type=hex2int)
+
+writeparser = subparsers.add_parser('write', help='write flash contents')
+writeparser.add_argument('filename', type=argparse.FileType('rb'))
+writeparser.add_argument('address', type=hex2int)
+
+hexwriteparser = subparsers.add_parser('hexwrite', help='write hexfile to flash')
+hexwriteparser.add_argument('hexfile', type=argparse.FileType('r'))
+
+verifyparser = subparsers.add_parser('verify', help='verify flash contents')
+verifyparser.add_argument('filename', type=argparse.FileType('rb'))
+verifyparser.add_argument('address', type=hex2int)
+
+eraseparser = subparsers.add_parser('erase', help='erase flash contents')
+
+args = parser.parse_args()
+if not args.command:
+   parser.print_usage()
+   sys.exit(1)
+
+# In any command case, open a device:
+stl = stlink.STLink2()
+stl.open()
+
+# Enter the right mode:
+if stl.CurrentMode == stlink.DFU_MODE:
+   stl.exitDfuMode()
+
+if stl.CurrentMode != stlink.DEBUG_MODE:
+   stl.enterSwdMode()
+
+if stl.ChipId != 0x10016413:
+   print('Only working on stm32f4discovery board for now.')
+   sys.exit(2)
+
+# Retrieve the connected device, if any:
+dev = stl.createDevice()
+
+if args.command == 'read':
+   dev_content = dev.readFlash(args.address, args.size)
+   args.filename.write(dev_content)
+elif args.command == 'write':
+   content = args.filename.read()
+   dev.writeFlash(args.address, content)
+elif args.command == 'hexwrite':
+    hf = hexfile.HexFile()
+    hf.load(args.hexfile)
+    r = hf.regions[0]
+    dev.writeFlash(r.address, r.data)
+elif args.command == 'verify':
+   content = args.filename.read()
+   dev.verifyFlash(args.address, content)
+elif args.command == 'erase':
+   dev.eraseFlash()
+else:
+   print('unknown command', args.command)
+
+stl.reset()
+stl.run()
+stl.exitDebugMode()
+