diff options
| -rwxr-xr-x | support/stm32loader.py | 31 |
1 files changed, 16 insertions, 15 deletions
diff --git a/support/stm32loader.py b/support/stm32loader.py index d8e1f9f..a817efc 100755 --- a/support/stm32loader.py +++ b/support/stm32loader.py @@ -59,23 +59,24 @@ class CommandInterface: def _wait_for_ask(self, info = ""): + got = self.sp.read(1) + + if not got: + raise CmdException("No response") + # wait for ask - try: - ask = ord(self.sp.read()) - except: - raise CmdException("Can't read port or timeout") + ask = ord(got) + + if ask == 0x79: + # ACK + return 1 else: - if ask == 0x79: - # ACK - return 1 + if ask == 0x1F: + # NACK + raise CmdException("NACK "+info) else: - if ask == 0x1F: - # NACK - raise CmdException("NACK "+info) - else: - # Unknow responce - raise CmdException("Unknow response. "+info+": "+hex(ask)) - + # Unknow responce + raise CmdException("Unknow response. "+info+": "+hex(ask)) def reset(self): self.sp.setDTR(0) @@ -407,7 +408,7 @@ if __name__ == "__main__": try: try: cmd.initChip() - except: + except CmdException: print "Can't init. Ensure that BOOT0 is enabled and reset device" bootversion = cmd.cmdGet() |