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TMC2660.h comment tweaks

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Scott Lahteine 2019-02-28 23:19:31 -06:00
parent a2e3226597
commit 9a6b90f47d
1 changed files with 63 additions and 68 deletions
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Marlin/src/HAL/HAL_STM32F7/TMC2660.h
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@ -76,81 +76,79 @@
* \class TMC26XStepper * \class TMC26XStepper
* \brief Class representing a TMC26X stepper driver * \brief Class representing a TMC26X stepper driver
* *
* In order to use one fo those drivers in your Arduino code you have to create an object of that class: * To use one of these drivers in your code create an object of its class:
* \code * \code
* TMC26XStepper stepper = TMC26XStepper(200,1,2,3,500); * TMC26XStepper tmc_stepper = TMC26XStepper(200,1,2,3,500);
* \endcode * \endcode
* see TMC26XStepper(int16_t number_of_steps, int16_t cs_pin, int16_t dir_pin, int16_t step_pin, uint16_t rms_current) * see TMC26XStepper(int16_t number_of_steps, int16_t cs_pin, int16_t dir_pin, int16_t step_pin, uint16_t rms_current)
* *
* Keep in mind that you need to start the driver with start() in order to get the TMC26X configured. * Keep in mind that you need to start the driver with start() in order to configure the TMC26X.
* *
* The most important function is the move(). It checks if the motor has to do a step or not. * The most important function is move(). It checks if the motor requires a step. It's important to call move() as
* It is important that you call move() as often as possible in your Arduino loop() routine. I suggest * often as possible in loop(). I suggest using a very fast loop routine and always call move() at the beginning or end.
* to use a very fast loop routine and always call it at the beginning or the end.
* *
* In order to move you have to provide a movement speed with setSpeed(). The speed is a positive value setting * To move you must set a movement speed with setSpeed(). The speed is a positive value, setting the RPM.
* the rotations per minute.
* *
* To really move the motor you have to call step() to tell the driver to move the motor the given number * To really move the motor you have to call step() to tell the driver to move the motor the given number
* of steps in the given direction. Positive values move the motor in one direction, negative values in the other direction. * of steps in the given direction. Positive values move the motor in one direction, negative values in the other.
* *
* You can check with isMoving() if the mototr is still moving or stop it apruptely with stop(). * You can check with isMoving() if the motor is still moving or stop it abruptly with stop().
*/ */
class TMC26XStepper { class TMC26XStepper {
public: public:
/*! /*!
* \brief creates a new represenatation of a stepper motor connected to a TMC26X stepper driver * \brief Create a new representation of a stepper motor connected to a TMC26X stepper driver
* *
* This is the main constructor. If in doubt use this. You must provide all parameters as described below. * Main constructor. If in doubt use this. All parameters must be provided as described below.
* *
* \param number_of_steps the number of steps the motor has per rotation. * \param number_of_steps Number of steps the motor has per rotation.
* \param cs_pin The Arduino pin you have connected the Cient Select Pin (!CS) of the TMC26X for SPI * \param cs_pin Arduino pin connected to the Client Select Pin (!CS) of the TMC26X for SPI.
* \param dir_pin the number of the Arduino pin the Direction input of the TMC26X is connected * \param dir_pin Arduino pin connected to the DIR input of the TMC26X.
* \param step_pin the number of the Arduino pin the step pin of the TMC26X driver is connected. * \param step_pin Arduino pin connected to the STEP pin of the TMC26X.
* \param rms_current the maximum current to privide to the motor in mA (!). A value of 200 would send up to 200mA to the motor * \param rms_current Maximum current to provide to the motor in mA (!). A value of 200 will send up to 200mA to the motor.
* \param resistor the current sense resistor in milli Ohm, defaults to ,15 Ohm ( or 150 milli Ohm) as in the TMC260 Arduino Shield * \param resistor Current sense resistor in milli-Ohm, defaults to 0.15 Ohm (or 150 milli-Ohm) as in the TMC260 Arduino Shield.
* *
* Keep in mind that you must also call TMC26XStepper.start() in order to configure the stepper driver for use. * You must also call TMC26XStepper.start() to configure the stepper driver for use.
* *
* By default the Constant Off Time chopper is used, see TMC26XStepper.setConstantOffTimeChopper() for details. * By default the Constant Off Time chopper is used. See TMC26XStepper.setConstantOffTimeChopper() for details.
* This should work on most motors (YMMV). You may want to configure and use the Spread Cycle Chopper, see setSpreadCycleChopper(). * This should work on most motors (YMMV). You may want to configure and use the Spread Cycle Chopper. See setSpreadCycleChopper().
* *
* By default a microstepping of 1/32th is used to provide a smooth motor run, while still giving a good progression per step. * By default a microstepping of 1/32 is used to provide a smooth motor run while still giving a good progression per step.
* You can select a different stepping with setMicrosteps() to aa different value. * Change stepping by sending setMicrosteps() a different value.
* \sa start(), setMicrosteps() * \sa start(), setMicrosteps()
*/ */
TMC26XStepper(const int16_t in_steps, int16_t cs_pin, int16_t dir_pin, int16_t step_pin, uint16_t current, uint16_t resistor=100); //resistor=150 TMC26XStepper(const int16_t in_steps, int16_t cs_pin, int16_t dir_pin, int16_t step_pin, uint16_t current, uint16_t resistor=100); //resistor=150
/*! /*!
* \brief configures and starts the TMC26X stepper driver. Before you called this function the stepper driver is in nonfunctional mode. * \brief Configure and start the TMC26X stepper driver. Before this is called the stepper driver is nonfunctional.
* *
* This routine configures the TMC26X stepper driver for the given values via SPI. * Configure the TMC26X stepper driver for the given values via SPI.
* Most member functions are non functional if the driver has not been started. * Most member functions are non-functional if the driver has not been started,
* Therefore it is best to call this in your Arduino setup() function. * therefore it is best to call this in setup().
*/ */
void start(); void start();
/*! /*!
* \brief resets the stepper in unconfigured mode. * \brief Reset the stepper in unconfigured mode.
* *
* This routine enables you to call start again. It does not change anything * Allows start to be called again. It doesn't change the internal stepper
* in the internal stepper configuration or the desired configuration. * configuration or the desired configuration. It just marks the stepper as
* It just marks the stepper as not yet startet. You do not have to reconfigure * not-yet-started. The stepper doesn't need to be reconfigured before
* the stepper to start it again, but it is not reset to any factory settings * starting again, and is not reset to any factory settings.
* this has to be configured back by yourself. * It must be reset intentionally.
* (Hint: Normally you do not need this function) * (Hint: Normally you do not need this function)
*/ */
void un_start(); void un_start();
/*! /*!
* \brief Sets the rotation speed in revolutions per minute. * \brief Set the rotation speed in RPM.
* \param whatSpeed the desired speed in rotations per minute. * \param whatSpeed the desired speed in RPM.
*/ */
void setSpeed(uint16_t whatSpeed); void setSpeed(uint16_t whatSpeed);
/*! /*!
* \brief reads out the currently selected speed in revolutions per minute. * \brief Report the currently selected speed in RPM.
* \sa setSpeed() * \sa setSpeed()
*/ */
uint16_t getSpeed(void); uint16_t getSpeed(void);
@ -158,87 +156,84 @@ class TMC26XStepper {
/*! /*!
* \brief Set the number of microsteps in 2^i values (rounded) up to 256 * \brief Set the number of microsteps in 2^i values (rounded) up to 256
* *
* This method set's the number of microsteps per step in 2^i interval. * This method sets the number of microsteps per step in 2^i interval.
* This means you can select 1, 2, 4, 16, 32, 64, 128 or 256 as valid microsteps. * It accepts 1, 2, 4, 16, 32, 64, 128 or 256 as valid microsteps.
* If you give any other value it will be rounded to the next smaller number (3 would give a microstepping of 2). * Other values will be rounded down to the next smaller value (e.g., 3 gives a microstepping of 2).
* You can always check the current microstepping with getMicrosteps(). * You can always check the current microstepping with getMicrosteps().
*/ */
void setMicrosteps(const int16_t in_steps); void setMicrosteps(const int16_t in_steps);
/*! /*!
* \brief returns the effective current number of microsteps selected. * \brief Return the effective current number of microsteps selected.
* *
* This function always returns the effective number of microsteps. * Always returns the effective number of microsteps.
* This can be a bit different than the micro steps set in setMicrosteps() since it is rounded to 2^i. * This may be different from the micro-steps set in setMicrosteps() since it is rounded to 2^i.
* *
* \sa setMicrosteps() * \sa setMicrosteps()
*/ */
int16_t getMicrosteps(void); int16_t getMicrosteps(void);
/*! /*!
* \brief Initiate a movement for the given number of steps. Positive numbers move in one, negative numbers in the other direction. * \brief Initiate a movement with the given number of steps. Positive values move in one direction, negative in the other.
* *
* \param number_of_steps The number of steps to move the motor. * \param number_of_steps The number of steps to move the motor.
* \return 0 if the motor was not moving and moves now. -1 if the motor is moving and the new steps could not be set. * \return 0 if the motor was not moving and moves now. -1 if the motor is moving and the new steps could not be set.
* *
* If the previous movement is not finished yet the function will return -1 and not change the steps to move the motor. * If the previous movement is incomplete the function returns -1 and doesn't change the steps to move the motor.
* If the motor does not move it return 0 * If the motor does not move it returns 0.
* *
* The direction of the movement is indicated by the sign of the steps parameter. It is not determinable if positive values are right * The movement direction is determined by the sign of the steps parameter. The motor direction in machine space
* or left This depends on the internal construction of the motor and how you connected it to the stepper driver. * cannot be determined, as it depends on the construction of the motor and how it functions in the drive system.
* *
* You can always verify with isMoving() or even use stop() to stop the motor before giving it new step directions. * For safety, verify with isMoving() or even use stop() to stop the motor before giving it new step directions.
* \sa isMoving(), getStepsLeft(), stop() * \sa isMoving(), getStepsLeft(), stop()
*/ */
char step(int16_t number_of_steps); char step(int16_t number_of_steps);
/*! /*!
* \brief Central movement method, must be called as often as possible in the lopp function and is very fast. * \brief Central movement method. Must be called as often as possible in the loop function and is very fast.
* *
* This routine checks if the motor still has to move, if the waiting delay has passed to send a new step command to the motor * Check if the motor still has to move and whether the wait-to-step interval has expired, and manages the
* and manages the number of steps yet to move to fulfill the current move command. * number of steps remaining to fulfill the current move command.
* *
* This function is implemented to be as fast as possible to call it as often as possible in your loop routine. * This function is implemented to be as fast as possible, so call it as often as possible in your loop.
* The more regurlarly you call this function the better. In both senses of 'regularly': Calling it as often as * It should be invoked with as frequently and with as much regularity as possible.
* possible is not a bad idea and if you even manage that the intervals you call this function are not too irregular helps too.
* *
* You can call this routine even if you know that the motor is not moving. It introduces just a very small penalty in your code. * This can be called even when the motor is known not to be moving. It will simply return.
* You must not call isMoving() to determine if you need to call this function, since taht is done internally already and only
* slows down you code.
* *
* How often you call this function directly influences your top moving speed for the motor. It may be a good idea to call this * The frequency with which this function is called determines the top stepping speed of the motor.
* from a timer overflow interrupt to ensure proper calling. * It is recommended to call this using a hardware timer to ensure regular invocation.
* \sa step() * \sa step()
*/ */
char move(void); char move(void);
/*! /*!
* \brief checks if the motor still has to move to fulfill the last movement command. * \brief Check whether the last movement command is done.
* \return 0 if the motor stops, -1 if the motor is moving. * \return 0 if the motor stops, -1 if the motor is moving.
* *
* This method can be used to determine if the motor is ready for new movements. * Used to determine if the motor is ready for new movements.
*\sa step(), move() *\sa step(), move()
*/ */
char isMoving(void); char isMoving(void);
/*! /*!
* \brief Get the number of steps left in the current movement. * \brief Get the number of steps left in the current movement.
* \return The number of steps left in the movement. This number is always positive. * \return The number of steps left in the movement. Always positive.
*/ */
uint16_t getStepsLeft(void); uint16_t getStepsLeft(void);
/*! /*!
* \brief Stops the motor regardless if it moves or not. * \brief Stop the motor immediately.
* \return -1 if the motor was moving and is really stoped or 0 if it was not moving at all. * \return -1 if the motor was moving and is really stoped or 0 if it was not moving at all.
* *
* This method directly and apruptely stops the motor and may be used as an emergency stop. * This method directly and abruptly stops the motor and may be used as an emergency stop.
*/ */
char stop(void); char stop(void);
/*! /*!
* \brief Sets and configure the classical Constant Off Timer Chopper * \brief Set and configure the classical Constant Off Timer Chopper
* \param constant_off_time The off time setting controls the minimum chopper frequency. For most applications an off time within the range of 5μs to 20μs will fit. Setting this parameter to zero completely disables all driver transistors and the motor can free-wheel. 0: chopper off, 1:15: off time setting (1 will work with minimum blank time of 24 clocks) * \param constant_off_time The off time setting controls the minimum chopper frequency. For most applications an off time within the range of 5μs to 20μs will fit. Setting this parameter to zero completely disables all driver transistors and the motor can free-wheel. 0: chopper off, 1:15: off time setting (1 will work with minimum blank time of 24 clocks)
* \param blank_time Selects the comparator blank time. This time needs to safely cover the switching event and the duration of the ringing on the sense resistor. For most low current drivers, a setting of 1 or 2 is good. For high current applications with large MOSFETs, a setting of 2 or 3 will be required. 0 (min setting) … (3) amx setting * \param blank_time Comparator blank time. This duration needs to safely cover the duration of the switching event and the ringing on the sense resistor. For most low current drivers, a setting of 1 or 2 is good. For high current applications with large MOSFETs, a setting of 2 or 3 will be required. 0 (min setting) … (3) amx setting
* \param fast_decay_time_setting Fast decay time setting. Controls the portion of fast decay for each chopper cycle. 0: slow decay only, 1…15: duration of fast decay phase * \param fast_decay_time_setting Fast decay time setting. Controls the portion of fast decay for each chopper cycle. 0: slow decay only, 1…15: duration of fast decay phase
* \param sine_wave_offset Sine wave offset. Controls the sine wave offset. A positive offset corrects for zero crossing error. -3…-1: negative offset, 0: no offset,1…12: positive offset * \param sine_wave_offset Sine wave offset. Controls the sine wave offset. A positive offset corrects for zero crossing error. -3…-1: negative offset, 0: no offset,1…12: positive offset
* \param use_curreent_comparator Selects usage of the current comparator for termination of the fast decay cycle. If current comparator is enabled, it terminates the fast decay cycle in case the current reaches a higher negative value than the actual positive value. (0 disable, -1 enable). * \param use_curreent_comparator Selects usage of the current comparator for termination of the fast decay cycle. If current comparator is enabled, it terminates the fast decay cycle in case the current reaches a higher negative value than the actual positive value. (0 disable, -1 enable).