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tmc2208: Make sure each analog mux config is unique 

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2019-06-18 17:58:20 -04:00
parent 274857357e
commit 3f79831485
1 changed files with 5 additions and 0 deletions
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5
klippy/extras/tmc2208.py
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@ -238,6 +238,7 @@ class MCU_TMC_uart_bitbang:
if select_pins_desc is not None:
self.analog_mux = MCU_analog_mux(self.mcu, self.cmd_queue,
select_pins_desc)
self.instances = {}
self.tmcuart_send_cmd = None
self.mcu.register_config_callback(self.build_config)
def build_config(self):
@ -256,6 +257,10 @@ class MCU_TMC_uart_bitbang:
instance_id = None
if self.analog_mux is not None:
instance_id = self.analog_mux.get_instance_id(select_pins_desc)
if instance_id in self.instances:
raise self.mcu.get_printer().config_error(
"Each TMC uart must have unique select pins polarity")
self.instances[instance_id] = True
return instance_id
def _calc_crc8(self, data):
# Generate a CRC8-ATM value for a bytearray