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1 #!/usr/bin/python
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2
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115
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3 import argparse, sys
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128
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4 import stlink, stm32
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113
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5
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6 def hex2int(s):
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115
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7 if s.startswith('0x'):
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8 s = s[2:]
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9 return int(s, 16)
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128
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10 raise ValueError('Hexadecimal value must begin with 0x')
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113
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11
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116
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12 parser = argparse.ArgumentParser(
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13 description='ST-link flash utility by Windel Bouwman')
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14 subparsers = parser.add_subparsers(title='commands',
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15 description='possible commands', dest='command')
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16
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17 readparser = subparsers.add_parser('read', help='read flash contents')
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18 readparser.add_argument('filename', type=argparse.FileType('wb', 0))
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19 readparser.add_argument('address', type=hex2int)
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20 readparser.add_argument('size', type=hex2int)
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21
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22 writeparser = subparsers.add_parser('write', help='write flash contents')
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23 writeparser.add_argument('filename', type=argparse.FileType('rb'))
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24 writeparser.add_argument('address', type=hex2int)
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25
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26 verifyparser = subparsers.add_parser('verify', help='verify flash contents')
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27 verifyparser.add_argument('filename', type=argparse.FileType('rb'))
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28 verifyparser.add_argument('address', type=hex2int)
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29
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30 eraseparser = subparsers.add_parser('erase', help='erase flash contents')
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31
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32 args = parser.parse_args()
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33 print(args)
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115
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34 if not args.command:
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35 parser.print_usage()
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36 sys.exit(1)
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37
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115
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38 # In any command case, open a device:
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39 stl = stlink.STLink2()
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40 stl.open()
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41
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42 # Enter the right mode:
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43 if stl.CurrentMode == stlink.DFU_MODE:
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44 stl.exitDfuMode()
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45
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46 if stl.CurrentMode != stlink.DEBUG_MODE:
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47 stl.enterSwdMode()
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48
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49 if stl.ChipId != 0x10016413:
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50 print('Only working on stm32f4discovery board for now.')
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51 sys.exit(2)
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52
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128
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53 # Retrieve the connected device, if any:
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54 dev = stl.createDevice()
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55
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56 if args.command == 'read':
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57 dev_content = dev.readFlash(args.address, args.size)
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58 args.filename.write(dev_content)
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59 elif args.command == 'write':
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60 content = args.filename.read()
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61 dev.writeFlash(args.address, content)
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62 elif args.command == 'verify':
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63 content = args.filename.read()
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64 dev.verifyFlash(args.address, content)
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65 elif args.command == 'erase':
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66 dev.eraseFlash()
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67 else:
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68 print('unknown command', args.command)
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69
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70 stl.exitDebugMode()
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71
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