diff options
Diffstat (limited to 'klippy/extras/tmc2208.py')
| -rw-r--r-- | klippy/extras/tmc2208.py | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/klippy/extras/tmc2208.py b/klippy/extras/tmc2208.py index 8f68b576..0c4ef806 100644 --- a/klippy/extras/tmc2208.py +++ b/klippy/extras/tmc2208.py @@ -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 |