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stc15x: add hack for SW/HW UART differences

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Grigori Goronzy 2015-11-22 07:52:04 +01:00
parent bf7cbb2042
commit ed28c8ef89
1 changed files with 6 additions and 2 deletions
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8
stcgal.py
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@ -2688,8 +2688,12 @@ class Stc15XProtocol(Stc15Protocol):
print("Switching to %d baud: " % self.baud_transfer, end="")
packet = bytes([0x01])
packet += bytes(prog_trim)
packet += struct.pack(">H", int(65535 - program_speed / self.baud_transfer))
packet += struct.pack(">H", int(65535 - (program_speed / self.baud_transfer) * 1.5))
# XXX: need to divide by four only in case there's a hardware UART
# looks like there is only a single chip in the series that does not
# have one. we can isolate it with the magic id.
bauds = self.baud_transfer if (self.mcu_magic >> 8) == 0xf2 else self.baud_transfer * 4
packet += struct.pack(">H", int(65535 - program_speed / bauds))
packet += struct.pack(">H", int(65535 - (program_speed / bauds) * 1.5))
packet += bytes([0x83])
self.write_packet(packet)
response = self.read_packet()