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stc15: fix RC oscillator baudrate switch packet

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It looks like it wasn't correct. The last value sent is probably
supposed to be the trim value for the chosen trim frequency.

Found while investigating grigorig/stcgal#16.
This commit is contained in:
Grigori Goronzy 2016-06-09 16:15:09 +02:00
parent 65a7759647
commit 53f9544281
1 changed files with 1 additions and 1 deletions
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2
stcgal/protocols.py
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@ -1293,7 +1293,7 @@ class Stc15Protocol(Stc15AProtocol):
# This is a bit of a hack, but it works.
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(user_trim)
iap_wait = self.get_iap_delay(program_speed)
packet += bytes([iap_wait])
self.write_packet(packet)