stc15: fix RC oscillator baudrate switch packet

It looks like it wasn't correct. The last value sent is probably supposed to be the trim value for the chosen trim frequency. Addresses grigorig/stcgal#16.
stc12+: drop checksum verification for flashing
2016-06-09 16:15:09 +02:00 · 2016-05-28 11:25:44 +02:00
1 changed files with 1 additions and 1 deletions
--- a/stcgal/protocols.py
+++ b/stcgal/protocols.py
@ -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)