# ADI Trinamic TMC2208 smart stepper driver

> Above is TMC2209 modules, but TMC2208 is nearly identical. #
### Table of contents - [Setup](#setup) - [UART](#configuration-of-uart-bus) - [Hub](#configuration-of-hub) - [Stepper](#stepper-configuration) - [Control via UART](#control-the-position-using-serial-uart) - [Control via pulses](#control-the-position-using-traditional-stepping-pulses-and-direction) - [Automation](#automation) - [`on_status`](#on_status) - [Actions](#actions) - [`tmc2208.configure`](#tmc2208configure-action) - [`tmc2208.currents`](#tmc2208currents-action) - [`tmc2208.chopconf`](#tmc2208chopconf-action) - [`tmc2208.pwmconf`](#tmc2208pwmconf-action) - [`tmc2208.enable`](#tmc2208enable-action) - [`tmc2208.disable`](#tmc2208disable-action) - [Sensors](#sensors) - [Examples](#example-config) - [Advanced](#advanced) - [Wiring](#wiring) - [UART Control Wiring](#uart-control) - [Pulse Control Wiring](#pulse-control) - [Resources](#resources) - [Troubleshooting](#troubleshooting)
## Setup Import the component(s). ```yaml external_components: - source: github://slimcdk/esphome-custom-components components: [ tmc2208_hub, tmc2208, stepper ] ``` --- ### Configuration of [UART Bus][uart-component] ```yaml uart: tx_pin: REPLACEME rx_pin: REPLACEME baud_rate: 500000 # 9600 -> 500k ``` * `baud_rate` (**Required**, int): The baud rate of the UART bus. TMC2208 will auto-detect baud rates from 9600 to 500k with the internal clock/oscillator. An external clock/oscillator is needed for baud rates higher than 500k. * `tx_pin` (*Required*, [Output Pin Schema][config-pin]): This is the ESPHome device's transmit pin. This should be connected through a 1k Ohm resistor to `PDN_UART` on the TMC2208. * `rx_pin` (*Required*, [Input Pin Schema][config-pin]): This is the ESPHome device's receive pin. This should be connected directly to `PDN_UART` on the TMC2208. > [!NOTE] *Avoid selecting a UART which is utilized for other purposes. For instance boot log as the TMC2208 will try to interpret the output.* --- ### Configuration of hub This part facilitates a semaphore-like channel to allow multiple drivers on same UART. > [!TIP] *Configuration of the hub can be omitted if only a single UART is configured.* ```yaml tmc2208_hub: # or with ids tmc2208_hub: id: REPLACEME uart_id: REPLACEME # or multiple hubs tmc2208_hub: - id: REPLACEME uart_id: REPLACEME - id: REPLACEME uart_id: REPLACEME ``` * `id` (**Required**, [ID][config-id]): Specify the ID of the hub so that you can explicitly reference it. * `uart_id` (**Required**, [ID][config-id]): Reference the UART config. Example of utilizing the hub with two drivers on same UART. ```yaml uart: - id: tmc_comms tx_pin: ... rx_pin: ... baud_rate: ... - id: uart_for_other_stuff tx_pin: ... rx_pin: ... baud_rate: ... tmc2208_hub: id: hub1 uart_id: tmc_comms stepper: - platform: tmc2208 id: driver1 tmc2208_hub_id: hub1 address: 0x00 ... all other options - platform: tmc2208 id: driver2 tmc2208_hub_id: hub1 address: 0x01 ... all other options ``` Example of omitting `tmc2208_hub` as which UART to use is inferred. ```yaml uart: tx_pin: ... rx_pin: ... baud_rate: ... stepper: - platform: tmc2208 id: driver1 address: 0x00 ... all other options - platform: tmc2208 id: driver2 address: 0x01 ... all other options ``` ---- ### Stepper configuration > *The stepper can be controlled in two ways. See [section 1.3][datasheet] for technical information.* #### Control the position using serial (UART) Accuracy is slightly reduced for tighter timing and high-frequency pulse generation, which is handled internally by the driver rather than the ESPHome microcontroller. This ensures consistent pulse generation without interference from other components, making it ideal for high microstep interpolation or silent operation. Relevant info can be found in [section 1.3][datasheet]. > *The provided accuracy is often precise enough, but it depends on speeds and how often the component can write to the driver.* > [!IMPORTANT] *Configure `index_pin` and not `step_pin` and `dir_pin` for this method.* #### Control the position using traditional stepping pulses and direction Stepping pulses are handled by the main thread but utilize [increased execution frequency functionality][highfrequencylooprequester] to generate pulses as fast as possible. Pulses are therefore limited to whenever the ESP can generate a pulse, and any timing inconsistencies may cause erratic motor noise or operational issues when running the motor. > *More components take up more resources slowing the main thread.* > [!IMPORTANT] *Configure `step_pin` and `dir_pin` (`index_pin` is optional) for this method. Stay below 8 microstepping for best performance.* #### ```yaml stepper: - platform: tmc2208 id: driver max_speed: 500 steps/s acceleration: 2500 steps/s^2 deceleration: 2500 steps/s^2 rsense: REPLACEME # enn_pin: REPLACEME # diag_pin: REPLACEME index_pin: REPLACEME # step_pin: REPLACEME # dir_pin: REPLACEME ``` * `id` (**Required**, [ID][config-id]): Specify the ID of the stepper so that you can control it. * `tmc2208_hub_id` (**Required**, [ID][config-id]): Specify the ID of the hub this stepper is connected to. May be be left out if only a single or no `tmc2208_hub` is configured * `address` (*Optional*, hex): UART address of the IC. Configured by setting MS1_AD0 or MS2_AD1 high or low. Default is `0x00`. * `enn_pin` (*Optional*, [Output Pin Schema][config-pin]): Enable not input pin for the driver. > *Driver can't be enabled if ENN is left floating. Either configure it if it's actually connected or wire it to GND.* * `diag_pin` (*Optional*, [Input Pin Schema][config-pin]): Error signaling from the driver. * `index_pin` (*Optional*, [Input Pin Schema][config-pin]): Serves as stepping feedback from the internal step pulse generator (not serving any purpose if `step_pin` and `dir_pin` is configured). * `step_pin` (*Optional*, [Output Pin Schema][config-pin]): Provides stepping pulses to the driver. * `dir_pin` (*Optional*, [Output Pin Schema][config-pin]): Controls direction of the motor. * `rsense` (*Optional*, resistance): Motor current sense resistors. Often varies from ~75 to 1000 mOhm. The actual value for your board can be found in the documentation. Leave empty to enable internal sensing using RDSon (170 mOhm). *Don't leave empty if your board has external sense resistors!* * `vsense` (*Optional*, boolean): Reduce currents/power to ~55% if smaller (<1/4 W) RSense resistors are used. Defaults to OTP. RSense must be configued as well. * `ottrim` (*Optional*, int): Limits for warning and shutdown temperatures. Default is OTP. OTP is 0 from factory. See below table for values.

OTTRIM	Prewarning	Shutdown
0	120C	143C
1	120C	150C
2	143C	150C
3	143C	157C

> *Driver will stay disabled until prewarning clears when shutdown has been triggered. Can be reenabled once temperature is below prewarning.* * `analog_current_scale` (*Optional*, boolean): If enabled, VREF input can adjust currents between 0 to IRUN. Defaults to `False` meaning the input is ignored and currents will match settings set by `tmc2208.currents`. > [!NOTE] *VREF is often a tiny potentiometer. Setting IRUN to 31 will allow VREF adjustments in the full current range allowed by the sense resistors (rsense). Setting IRUN to 16 narrows that range to ~50%. **IRUN effectively sets the upper limit for what VREF can scale to.*** * `config_dump_include_registers` (*Optional*, boolean): Config dump will display current values in the drivers registers if set. Default is false. * `clock_frequency` (*Optional*, frequency): Timing reference for all functionalities of the driver. Defaults to 12MHz, which all drivers are factory calibrated to. Only set if using external clock. * All other from [Base Stepper Component][base-stepper-component] ## Automation ### `on_status` An event is fired whenever a driver warning or error is detected. For instance when the driver overheats. ```yaml stepper: - platform: tmc2208 id: driver ... on_status: - if: condition: lambda: return code == tmc2208::OVERTEMPERATURE_PREWARNING; then: - logger.log: "Driver is about to overheat" ``` > All events in an [example config](#status-events) for easy copy/paste #### Driver status codes Most events is signaling that the driver is in a given state. The majority of events also has a `CLEARED` or similar counterpart signaling that the driver is now not in the given state anymore. * `DIAG_TRIGGERED` | `DIAG_TRIGGER_CLEARED` DIAG output is triggered. Primarily driver errors. * `RESET` | `RESET_CLEARED` Driver has been reset since last power on. * `DRIVER_ERROR` | `DRIVER_ERROR_CLEARED` A driver error was detected. * `CP_UNDERVOLTAGE` | `CP_UNDERVOLTAGE_CLEARED` Undervoltage on chargepump input. * `OVERTEMPERATURE_PREWARNING` | `OVERTEMPERATURE_PREWARNING_CLEARED` Driver is warning about increasing temperature. * `OVERTEMPERATURE` | `OVERTEMPERATURE_CLEARED` Driver is at critical high temperature and is shutting down. * `TEMPERATURE_ABOVE_120C` | `TEMPERATURE_BELOW_120C` Temperature is higher or lower than 120C. * `TEMPERATURE_ABOVE_143C` | `TEMPERATURE_BELOW_143C` Temperature is higher or lower than 143C. * `TEMPERATURE_ABOVE_150C` | `TEMPERATURE_BELOW_150C` Temperature is higher or lower than 150C. * `TEMPERATURE_ABOVE_157C` | `TEMPERATURE_BELOW_157C` Temperature is higher or lower than 157C. * `OPEN_LOAD` | `OPEN_LOAD_CLEARED` Open load indicator. * `OPEN_LOAD_A` | `OPEN_LOAD_A_CLEARED` Open load indicator phase A. * `OPEN_LOAD_B` | `OPEN_LOAD_B_CLEARED` Open load indicator phase B. * `LOW_SIDE_SHORT` | `LOW_SIDE_SHORT_CLEARED` Low side short indicator. * `LOW_SIDE_SHORT_A` | `LOW_SIDE_SHORT_A_CLEARED` Low side short indicator phase A. * `LOW_SIDE_SHORT_B` | `LOW_SIDE_SHORT_B_CLEARED` Low side short indicator phase B. * `GROUND_SHORT` | `GROUND_SHORT_CLEARED` Short to ground indicator. * `GROUND_SHORT_A` | `GROUND_SHORT_A_CLEARED` Short to ground indicator phase A. * `GROUND_SHORT_B` | `GROUND_SHORT_B_CLEARED` Short to ground indicator phase B. ## Actions > [!NOTE] *Registers and fields on the driver persist through an ESPHome device reboot, so previously written states may remain active. They are set to OTP/defaults or cleared when the driver power cycles.* ### `tmc2208.configure` Action Example of configuring the driver. For instance [`on_boot`](https://esphome.io/components/esphome.html#on-boot). ```yaml on_...: - tmc2208.configure: direction: REPLACEME microsteps: REPLACME interpolation: REPLACEME enable_spreadcycle: REPLACEME tpwm_threshold: REPLACEME ``` * `id` (**Required**, [ID][config-id]): Reference to the stepper tmc2208 component. Can be left out if only a single TMC2208 is configured. * `direction` (*Optional*, string, [templatable][config-templatable]): Effectively inverse the rotational direction. Options are `clockwise` or `counterclockwise` and their abbreviations `cw` or `cww`. * `microsteps` (*Optional*, int, [templatable][config-templatable]): Microstepping. Possible values are `1`, `2`, `4`, `8`, `16`, `32`, `64`, `128`, `256`. * `interpolation` (*Optional*, bool, [templatable][config-templatable]): The actual microstep resolution (MRES) becomes extrapolated to 256 microsteps for the smoothest motor operation. * `enable_spreadcycle` (*Optional*, bool, [templatable][config-templatable]): `True` completely disables StealthChop and only uses SpreadCycle, `False` allows use of StealthChop. Defaults to OTP. * `tpwm_threshold` (*Optional*, int, [templatable][config-templatable]): Sets **TPWMTHRS** ### `tmc2208.currents` Action Example of configuring currents and standstill mode. ```yaml on_...: - tmc2208.currents: standstill_mode: REPLACEME irun: REPLACEME run_current: REPLACEME ihold: REPLACEME hold_current: REPLACEME tpowerdown: REPLACEME iholddelay: REPLACEME ``` * `id` (**Required**, [ID][config-id]): Reference to the stepper tmc2208 component. Can be left out if only a single TMC2208 is configured. * `standstill_mode` (*Optional*, [templatable][config-templatable]): Standstill mode for when movement stops. Default is OTP. Available modes are: * `normal`: Actively breaks the motor. * `freewheeling`: `ihold` and/or `hold_current` must be 0 for true freewheeling. Higher IHOLD enforces high currents thus harder braking effect. * `short_coil_ls`: Similar to `freewheeling`, but with motor coils shorted to low side voltage. * `short_coil_hs`: Similar to `freewheeling`, but with motor coils shorted to high side voltage. * `irun` (*Optional*, int, [templatable][config-templatable]): IRUN setting. Must be between 0 and 31. * `run_current` (*Optional*, current, [templatable][config-templatable]): Converts a RMS current setting to IRUN based on RSense and VSense according to [section 9][datasheet]. * `ihold` (*Optional*, int, [templatable][config-templatable]): IHOLD setting. Must be between 0 and 31. * `hold_current` (*Optional*, current, [templatable][config-templatable]): Converts a RMS current setting to IHOLD based on RSense and VSense according to [section 9][datasheet]. * `tpowerdown` (*Optional*, int, [templatable][config-templatable]): TPOWERDOWN setting. Must be between 0 and 31. * `iholddelay` (*Optional*, int, [templatable][config-templatable]): IHOLDDELAY setting. Must be between 0 and 31. > [!NOTE] *See [section 1.7][datasheet] for visiual graphs of IRUN, TPOWERDOWN and IHOLDDELAY and IHOLD* ### `tmc2208.chopconf` Action ```yaml on_...: - tmc2208.chopconf: tbl: REPLACEME hend: REPLACEME hstrt: REPLACEME ``` * `id` (**Required**, [ID][config-id]): Reference to the stepper tmc2208 component. Can be left out if only a single TMC2208 is configured. * `tbl` (*Optional*, int, [templatable][config-templatable]): Sets CHOPCONF **TBL** * `hend` (*Optional*, int, [templatable][config-templatable]): Sets CHOPCONF **HEND** * `hstrt` (*Optional*, int, [templatable][config-templatable]): Sets CHOPCONF **HSTRT** ### `tmc2208.pwmconf` Action ```yaml on_...: - tmc2208.pwmconf: lim: REPLACEME reg: REPLACEME freq: REPLACEME ofs: REPLACEME autograd: REPLACEME autoscale: REPLACEME ``` * `id` (**Required**, [ID][config-id]): Reference to the stepper tmc2208 component. Can be left out if only a single TMC2208 is configured. * `lim` (*Optional*, int, [templatable][config-templatable]): Sets PWMCONF **PWM_LIM** * `reg` (*Optional*, int, [templatable][config-templatable]): Sets PWMCONF **PWM_REG** * `freq` (*Optional*, int, [templatable][config-templatable]): Sets PWMCONF **PWM_FREQ** * `ofs` (*Optional*, int, [templatable][config-templatable]): Sets PWMCONF **PWM_OFS** * `autograd` (*Optional*, boolean, [templatable][config-templatable]): Sets PWMCONF **PWM_AUTOGRAD** * `autoscale` (*Optional*, boolean, [templatable][config-templatable]): Sets PWMCONF **PWM_AUTOSCALE** ### `tmc2208.enable` Action This uses *TOFF* (sets to 3) if `enn_pin` is not set to enable the driver. *Driver will automatically be enabled if new target is issued.* ```yaml on_...: - tmc2208.enable: id: driver restore_toff: REPLACEME ``` * `id` (**Required**, [ID][config-id]): Reference to the stepper tmc2208 component. Can be left out if only a single TMC2208 is configured. * `restore_toff` (*Optional*, boolean, [templatable][config-templatable]): Will attempt to recover TOFF value. Used when no `enn_pin` is configured. Enabled by default. ### `tmc2208.disable` Action This uses *TOFF* (sets to 0) if `enn_pin` is not set to disable the driver. This will also trigger `stepper.stop`. ```yaml on_...: - tmc2208.disable: id: driver restore_toff: REPLACEME ``` * `id` (**Required**, [ID][config-id]): Reference to the stepper tmc2208 component. Can be left out if only a single TMC2208 is configured. * `restore_toff` (*Optional*, boolean, [templatable][config-templatable]): Will attempt to recover TOFF value. Used when no `enn_pin` is configured. ### Sensors Some metrics from the driver is exposed as a ready-to-use sensor component. ```yaml sensor: - platform: tmc2208 type: actual_current name: Actual current update_interval: 250ms - platform: tmc2208 type: pwm_scale_sum name: PWM Scale Sum update_interval: 250ms - platform: tmc2208 type: pwm_scale_auto name: PWM Scale Auto update_interval: 250ms - platform: tmc2208 type: pwm_ofs_auto name: PWM OFS Auto update_interval: 250ms - platform: tmc2208 type: pwm_grad_auto name: PWM Grad Auto update_interval: 250ms ``` * `tmc2208_id` (*Optional*, [ID][config-id]): Manually specify the ID of the `stepper.tmc2208` you want to use this sensor. * `type` (**Required**): * Remeber to configure StallGuard threshold for this to work reliably. * The load is calculated by. 510 - SG_RESULT / 510 - SGTHRS * 2 = load coefficient. * `actual_current` Active current setting. Either IRUN or IHOLD value. * `pwm_scale_sum` Actual PWM duty cycle. This value is used for scaling the values CUR_A and CUR_B read from the sine wave table. * `pwm_scale_auto` 9 Bit signed offset added to the calculated PWM duty cycle. This is the result of the automatic amplitude regulation based on current measurement. * `pwm_ofs_auto` Automatically determined offset value. * `pwm_grad_auto` Automatically determined gradient value. * All other from [Sensor][base-sensor-component] ## Example config ```yaml external_components: - source: github://slimcdk/esphome-custom-components components: [ tmc2208_hub, tmc2208, stepper ] # esp32 or esp8266 config.. wifi: ssid: !secret WIFI_SSID password: !secret WIFI_PASSWORD esphome: name: actuator on_boot: - tmc2208.configure: microsteps: 8 interpolation: true - tmc2208.currents: standstill_mode: freewheeling irun: 16 ihold: 0 tpowerdown: 0 iholddelay: 0 uart: tx_pin: 16 rx_pin: 17 baud_rate: 500000 stepper: - platform: tmc2208 id: driver max_speed: 2000 steps/s acceleration: 5000 steps/s^2 deceleration: 5000 steps/s^2 config_dump_include_registers: true rsense: 110 mOhm index_pin: 42 diag_pin: 41 button: - platform: template name: Stop on_press: - stepper.stop: driver - platform: template name: 10000 Steps forward on_press: - stepper.set_target: id: driver target: !lambda return id(driver)->current_position +10000; - platform: template name: 10000 Steps backward on_press: - stepper.set_target: id: driver target: !lambda return id(driver)->current_position -10000; number: - platform: template name: Target position min_value: -100000 max_value: 100000 step: 100 lambda: return id(driver)->current_position; update_interval: 1s set_action: - stepper.set_target: id: driver target: !lambda "return x;" ``` Partial output of above configuration. ```console ... [00:00:00][C][tmc2208_hub:013]: TMC2208 Hub: [00:00:00][C][tmc2208_hub:014]: Drivers in hub (1): [00:00:00][C][tmc2208_hub:017]: Driver with id 'driver1' on address 0x00 [00:00:00][C][tmc2208:011]: TMC2208 Stepper: [00:00:00][C][tmc2208:012]: Acceleration: 5000 steps/s^2 [00:00:00][C][tmc2208:012]: Deceleration: 5000 steps/s^2 [00:00:00][C][tmc2208:012]: Max Speed: 2000 steps/s [00:00:00][C][tmc2208:013]: Enable/disable driver with TOFF [00:00:00][C][tmc2208:013]: DIAG Pin: GPIO41 [00:00:00][C][tmc2208:013]: INDEX Pin: GPIO42 [00:00:00][C][tmc2208:013]: Address: 0x00 [00:00:00][C][tmc2208:013]: Detected IC version: 0x20 [00:00:00][C][tmc2208:013]: Microsteps: 8 [00:00:00][C][tmc2208:013]: Clock frequency: 12000000 Hz (VACTUAL factor: 0.715256) [00:00:00][C][tmc2208:013]: Overtemperature: prewarning = 120C | shutdown = 143C [00:00:00][C][tmc2208:013]: Status check: enabled [00:00:00][C][tmc2208:013]: Currents: [00:00:00][C][tmc2208:013]: Limits: 1767 mA [00:00:00][C][tmc2208:013]: IRUN: 1 (110 mA) [00:00:00][C][tmc2208:013]: IHOLD: 0 (0 mA) [00:00:00][C][tmc2208:013]: Additional scaling by VREF is disabled [00:00:00][C][tmc2208:013]: VSense: False (high heat dissipation) [00:00:00][C][tmc2208:013]: RSense: 0.110 Ohm external sense resistors [00:00:00][C][tmc2208:013]: Register dump: [00:00:00][C][tmc2208:013]: GCONF: 0x000001E0 [00:00:00][C][tmc2208:013]: GSTAT: 0x00000000 [00:00:00][C][tmc2208:013]: IFCNT: 0x00000061 [00:00:00][C][tmc2208:013]: SLAVECONF: 0x00000000 [00:00:00][C][tmc2208:013]: OTP_PROG: 0x00000000 [00:00:00][C][tmc2208:013]: OTP_READ: 0x0000000C [00:00:00][C][tmc2208:013]: IOIN: 0x20000140 [00:00:00][C][tmc2208:013]: FACTORY_CONF: 0x0000000C [00:00:00][C][tmc2208:013]: IHOLD_IRUN: 0x00000100 [00:00:00][C][tmc2208:013]: TPOWERDOWN: 0x00000000 [00:00:00][C][tmc2208:013]: TSTEP: 0x000FFFFF [00:00:00][C][tmc2208:013]: TPWMTHRS: 0x00000000 [00:00:00][C][tmc2208:013]: VACTUAL: 0x00000000 [00:00:00][C][tmc2208:013]: MSCNT: 0x00000230 [00:00:00][C][tmc2208:013]: MSCURACT: 0x011301B7 [00:00:00][C][tmc2208:013]: CHOPCONF: 0x15010053 [00:00:00][C][tmc2208:013]: DRV_STATUS: 0xC0000000 [00:00:00][C][tmc2208:013]: PWM_CONF: 0xC81D0E24 [00:00:00][C][tmc2208:013]: PWM_SCALE: 0x000A0011 [00:00:00][C][tmc2208:013]: PWM_AUTO: 0x001A00FF ... ``` ### Advanced Writing to and reading from registers and register fields from the driver can easily be done with the help of preexisting [helper definitions][tmcapi-tmc2208-hwa] from the underlying TMC-API. A description of the register map can be found under [section 5][datasheet]. > [!IMPORTANT] ***The `tmc2208` component holds a mirror in memory of the values written to the driver. This means write-only registers can still be read with below methods provided they have been written already.*** > >*Definitions ending in `_MASK` or `_SHIFT` should not be used.* The `tmc2208` base component exposes four methods: * `void write_register(uint8_t address, int32_t value)` write/overwrite an entire register. * `int32_t read_register(uint8_t address)` read an entire registers. * `void write_field(RegisterField field, uint32_t value)` write/overwrite a register field. * `uint32_t read_field(RegisterField field)` read a register field. * `uint32_t extract_field(uint32_t data, RegisterField field)` extract field value from register value. > [!CAUTION] *Overwriting below registers may cause instability in the ESPHome component and should be avoided.* * `VACTUAL_FIELD` * `TOFF_FIELD` * `VSENSE_FIELD` * `DEDGE_FIELD` * `INDEX_OTPW_FIELD` * `INDEX_STEP_FIELD` * `MULTISTEP_FILT_FIELD` * `PDN_DISABLE_FIELD` * `INTERNAL_RSENSE_FIELD` * `I_SCALE_ANALOG_FIELD` * `TEST_MODE_FIELD` Example usage in lambdas ```yaml sensor: // Read microstep selection index into a sensor. This is a binary exponent like 0,1,2,3,... and microsteps can be calculated like 2** - platform: template name: Microstep selection index lambda: return id(driver)->read_field(MRES_FIELD); button: // Write value 3 to MRES register field. 2**3 = microstepping of 8 - platform: template name: Set microstepping to 8 on_press: - lambda: id(driver)->write_field(MRES_FIELD, 3); ``` ## Wiring Guides to wire ESPHome supported MCU to a TMC2208 driver for either only UART control or pulse control. ### UART Control Wiring for [UART control](#control-the-position-using-serial-uart) ### Pulse control Wiring for [Pulse control](#control-the-position-using-traditional-stepping-pulses-and-direction) > [!IMPORTANT] *Most drivers come as breakout modules and connections can often be labeled slightly differently. `PDN_UART` was often not labeled, as serial communication was rarly used in the early days, but is apparent on nearly all new modules.* ## Resources ### Parameterization of spreadCycle™ Article by [Bernhard Dwersteg](https://www.analog.com/en/resources/app-notes/an-001.html#author) \ https://www.analog.com/en/resources/app-notes/an-001.html ### Parameterization of StallGuard2™ & CoolStep™ Article by [Bernhard Dwersteg](https://www.analog.com/en/resources/app-notes/an-002.html#author) \ https://www.analog.com/en/resources/app-notes/an-002.html ### Choosing stepper motors https://docs.duet3d.com/User_manual/Connecting_hardware/Motors_choosing ### Other https://www.analog.com/en/products/tmc2208.html ## Troubleshooting #### `Unable to read IC version. Is the driver powered and wired correctly?` 1. Make sure UART is correctly wired and the 1k Ohm resistor is placed correctly. 2. Make sure the driver is power on VM / VS (motor supply voltage). Must be between 4.75 and 29V. #### `Detected unknown IC version: 0x??` First generation of TMC2208s have version `0x20`. There is only a single version released as of Q3 2024. If you are seeing version `0x20` that means you have a TMC2208 which is not supported by this component. #### `Reading from UART timed out at byte 0!` Poor signal integrity can cause instability in the UART connection. The component doesn't retry writing/reading if a reading failed. Make sure the connection is reliable for best performance. Try lower baud rates if these only appear occasionally. #### Driver makes "sizzling" noise Long wires connected to ENN might pick up interference causing the driver to make a sizzling noise if left floating. #### `undefined reference to vtable` Source code for components aren't fully loading when adding additional components on ESP-IDF framework with an existing compiled binary. Solution is to do a clean build. #### `Component tmc2208 took a long time for an operation ...` A lot is happening over serial and low baud rates might cause this warning. Make sure to use the highest baud rate possible. Preferably 500k, which is the highest supported baud rate without external clock. ## TODOs * Reconfigure driver if driver was power cycled. * OTTRIM not setting or reading properly. * Implement hardware timer for step pulse generation. * Use index for warning if stepper is controlled with step/dir. * Setup with RX omitted. * `tmc2208_hub` handle chip select like setup for multiple drivers with same addresses. ## MISC ### Status events All status events configured for easy copy-pasta. ```yaml stepper: - platform: tmc2208 id: driver ... on_status: - logger.log: format: "Driver is reporting an update! (code %d)" args: ["code"] - if: condition: lambda: return code == tmc2208::DIAG_TRIGGERED; then: - logger.log: DIAG_TRIGGERED - if: condition: lambda: return code == tmc2208::DIAG_TRIGGER_CLEARED; then: - logger.log: DIAG_TRIGGER_CLEARED - if: condition: lambda: return code == tmc2208::RESET; then: - logger.log: RESET - if: condition: lambda: return code == tmc2208::RESET_CLEARED; then: - logger.log: RESET_CLEARED - if: condition: lambda: return code == tmc2208::DRIVER_ERROR; then: - logger.log: DRIVER_ERROR - if: condition: lambda: return code == tmc2208::DRIVER_ERROR_CLEARED; then: - logger.log: DRIVER_ERROR_CLEARED - if: condition: lambda: return code == tmc2208::CP_UNDERVOLTAGE; then: - logger.log: CP_UNDERVOLTAGE - if: condition: lambda: return code == tmc2208::CP_UNDERVOLTAGE_CLEARED; then: - logger.log: CP_UNDERVOLTAGE_CLEARED - if: condition: lambda: return code == tmc2208::OVERTEMPERATURE_PREWARNING; then: - logger.log: OVERTEMPERATURE_PREWARNING - if: condition: lambda: return code == tmc2208::OVERTEMPERATURE_PREWARNING_CLEARED; then: - logger.log: OVERTEMPERATURE_PREWARNING_CLEARED - if: condition: lambda: return code == tmc2208::OVERTEMPERATURE; then: - logger.log: OVERTEMPERATURE - if: condition: lambda: return code == tmc2208::OVERTEMPERATURE_CLEARED; then: - logger.log: OVERTEMPERATURE_CLEARED - if: condition: lambda: return code == tmc2208::TEMPERATURE_ABOVE_120C; then: - logger.log: TEMPERATURE_ABOVE_120C - if: condition: lambda: return code == tmc2208::TEMPERATURE_BELOW_120C; then: - logger.log: TEMPERATURE_BELOW_120C - if: condition: lambda: return code == tmc2208::TEMPERATURE_ABOVE_143C; then: - logger.log: TEMPERATURE_ABOVE_143C - if: condition: lambda: return code == tmc2208::TEMPERATURE_BELOW_143C; then: - logger.log: TEMPERATURE_BELOW_143C - if: condition: lambda: return code == tmc2208::TEMPERATURE_ABOVE_150C; then: - logger.log: TEMPERATURE_ABOVE_150C - if: condition: lambda: return code == tmc2208::TEMPERATURE_BELOW_150C; then: - logger.log: TEMPERATURE_BELOW_150C - if: condition: lambda: return code == tmc2208::TEMPERATURE_ABOVE_157C; then: - logger.log: TEMPERATURE_ABOVE_157C - if: condition: lambda: return code == tmc2208::TEMPERATURE_BELOW_157C; then: - logger.log: TEMPERATURE_BELOW_157C - if: condition: lambda: return code == tmc2208::OPEN_LOAD; then: - logger.log: OPEN_LOAD - if: condition: lambda: return code == tmc2208::OPEN_LOAD_CLEARED; then: - logger.log: OPEN_LOAD_CLEARED - if: condition: lambda: return code == tmc2208::OPEN_LOAD_A; then: - logger.log: OPEN_LOAD_A - if: condition: lambda: return code == tmc2208::OPEN_LOAD_A_CLEARED; then: - logger.log: OPEN_LOAD_A_CLEARED - if: condition: lambda: return code == tmc2208::OPEN_LOAD_B; then: - logger.log: OPEN_LOAD_B - if: condition: lambda: return code == tmc2208::OPEN_LOAD_B_CLEARED; then: - logger.log: OPEN_LOAD_B_CLEARED - if: condition: lambda: return code == tmc2208::LOW_SIDE_SHORT; then: - logger.log: LOW_SIDE_SHORT - if: condition: lambda: return code == tmc2208::LOW_SIDE_SHORT_CLEARED; then: - logger.log: LOW_SIDE_SHORT_CLEARED - if: condition: lambda: return code == tmc2208::LOW_SIDE_SHORT_A; then: - logger.log: LOW_SIDE_SHORT_A - if: condition: lambda: return code == tmc2208::LOW_SIDE_SHORT_A_CLEARED; then: - logger.log: LOW_SIDE_SHORT_A_CLEARED - if: condition: lambda: return code == tmc2208::LOW_SIDE_SHORT_B; then: - logger.log: LOW_SIDE_SHORT_B - if: condition: lambda: return code == tmc2208::LOW_SIDE_SHORT_B_CLEARED; then: - logger.log: LOW_SIDE_SHORT_B_CLEARED - if: condition: lambda: return code == tmc2208::GROUND_SHORT; then: - logger.log: GROUND_SHORT - if: condition: lambda: return code == tmc2208::GROUND_SHORT_CLEARED; then: - logger.log: GROUND_SHORT_CLEARED - if: condition: lambda: return code == tmc2208::GROUND_SHORT_A; then: - logger.log: GROUND_SHORT_A - if: condition: lambda: return code == tmc2208::GROUND_SHORT_A_CLEARED; then: - logger.log: GROUND_SHORT_A_CLEARED - if: condition: lambda: return code == tmc2208::GROUND_SHORT_B; then: - logger.log: GROUND_SHORT_B - if: condition: lambda: return code == tmc2208::GROUND_SHORT_B_CLEARED; then: - logger.log: GROUND_SHORT_B_CLEARED ``` [datasheet]: <./docs/TMC2202_TMC2208_TMC2224_datasheet_rev1.13.pdf> "Datasheet rev 1.09" [config-id]: "ESPHome ID Config Schema" [config-pin]: "ESPHome Pin Config Schema" [config-templatable]: "Templatable configuration" [config-time]: "ESPHome Time Config Schema" [uart-component]: "ESPHome UART Config" [base-stepper-component]: "ESPHome Base Stepper Component" [base-sensor-component]: "ESPHome Base Sensor Component" [highfrequencylooprequester]: "HighFrequencyLoopRequester class" [tmcapi-tmc2208-hwa]: <./tmc2208_api_registers.h> "TMC-API TMC2208 Hardware Abstractions"