Bootloader configuration namespace containing all configuration structures and enums. More...

Enumerations
enum class	LDOVoltage : uint8_t { Disabled = 0 , V2_5 = 1 , V3_3 = 2 , V5_0 = 3 }
	Enumerations describing bootloader configuration options. More...

enum class	LDOSlope : uint8_t { Slope3ms = 0 , Slope1_5ms = 1 , Slope0_75ms = 2 , Slope0_37ms = 3 }
	LDO output slope control for power-up characteristics. More...

enum class	BootMode : uint8_t { Register = 1 , Parameter = 2 }
	Boot mode selection for motor control system startup. More...

enum class	UartRxPin : uint8_t { GPIO7 = 0 , GPIO1 = 1 }
	UART receive pin selection for bootloader communication. More...

enum class	UartTxPin : uint8_t { GPIO6 = 0 , GPIO0 = 1 }
	UART transmit pin selection for bootloader communication. More...

enum class	BaudRate : uint8_t { BR9600 = 0 , BR19200 , BR38400 , BR57600 , BR115200 , BR1000000 , Auto8x , Auto16x }
	UART baud rate configuration for bootloader communication. More...

enum class	RS485TxEnPin : uint8_t { None = 0 , GPIO8 = 1 , GPIO2 = 2 }
	RS485 transmit enable pin selection for half-duplex communication. More...

enum class	SPIInterface : uint8_t { SPI0 = 0 , SPI1 = 1 }
	SPI interface selection for bootloader and flash communication. More...

enum class	SPI0SckPin : uint8_t { GPIO6 = 0 , GPIO11 = 1 }
	SPI0 clock pin selection for bootloader communication. More...

enum class	SPIFlashFreq : uint8_t { Div1 = 0 , Div2 = 1 , Div4 = 3 }
	SPI flash frequency divider configuration. More...

enum class	I2CSdaPin : uint8_t { GPIO5 = 0 , GPIO11 = 1 , GPIO14 = 2 }
	I2C data pin selection for external EEPROM communication. More...

enum class	I2CSclPin : uint8_t { GPIO4 = 0 , GPIO12 = 1 , GPIO13 = 2 }
	I2C clock pin selection for external EEPROM communication. More...

enum class	I2CFreq : uint8_t { Freq100k = 0 , Freq200k , Freq400k , Freq800k }
	I2C communication frequency configuration. More...

enum class	ClockSource : uint8_t { Internal = 0 , External = 1 }
	System clock source selection. More...

enum class	ExtSourceType : uint8_t { Oscillator = 0 , Clock = 1 }
	External clock source type configuration. More...

enum class	XtalDrive : uint8_t { Freq8MHz = 1 , Freq16MHz = 3 , Freq24MHz = 5 , Freq32MHz = 6 }
	Crystal drive strength configuration for external oscillators. More...

enum class	SysClkSource : uint8_t { IntOsc = 0 , PLL = 1 }
	System clock source selection after initial oscillator. More...

enum class	SysClkDiv : uint8_t { Div1 = 0 , Div15MHz = 3 }
	System clock divider configuration. More...

enum class	HallUPin : uint8_t { GPIO2 = 0 , GPIO7 = 1 , GPIO9 = 2 }
	Hall encoder U-phase pin selection for BLDC motor feedback. More...

enum class	HallVPin : uint8_t { GPIO3 = 0 , GPIO15 = 1 }
	Hall encoder V-phase pin selection for BLDC motor feedback. More...

enum class	HallWPin : uint8_t { GPIO4 = 0 , GPIO8 = 1 , GPIO10 = 2 }
	Hall encoder W-phase pin selection for BLDC motor feedback. More...

enum class	ABN1APin : uint8_t { GPIO5 = 0 , GPIO8 = 1 , GPIO17 = 2 }
	ABN encoder 1 A-phase pin selection for incremental encoder feedback. More...

enum class	ABN1BPin : uint8_t { GPIO1 = 0 , GPIO13 = 1 , GPIO18 = 2 }
	ABN encoder 1 B-phase pin selection for incremental encoder feedback. More...

enum class	ABN1NPin : uint8_t { Disabled = 0 , GPIO14 = 1 , GPIO16 = 2 }
	ABN encoder 1 index pin selection for incremental encoder feedback. More...

enum class	ABN2APin : uint8_t { GPIO6 = 0 , GPIO15 = 1 }
	ABN encoder 2 A-phase pin selection for second incremental encoder. More...

enum class	ABN2BPin : uint8_t { GPIO7 = 0 , GPIO11 = 1 , GPIO16 = 2 }
	ABN encoder 2 B-phase pin selection for second incremental encoder. More...

enum class	RefLPin : uint8_t { Disabled = 0 , GPIO2 = 1 , GPIO12 = 2 , GPIO16 = 3 }
	Reference switch left pin selection for limit switch detection. More...

enum class	RefRPin : uint8_t { Disabled = 0 , GPIO3 = 1 , GPIO18 = 2 }
	Reference switch right pin selection for limit switch detection. More...

enum class	RefHPin : uint8_t { Disabled = 0 , GPIO4 = 1 , GPIO7 = 2 , GPIO15 = 3 , GPIO17 = 4 }
	Reference switch home pin selection for home position detection. More...

enum class	StepPin : uint8_t { GPIO7 = 0 , GPIO11 = 1 , GPIO16 = 2 }
	Step pin selection for step/direction interface. More...

enum class	DirPin : uint8_t { GPIO6 = 0 , GPIO15 = 1 }
	Direction pin selection for step/direction interface. More...

enum class	SPIEncBlock : uint8_t { SPI0 = 0 , SPI1 = 1 }
	SPI encoder interface block selection. More...

enum class	SPIEncMode : uint8_t { Mode0 = 0 , Mode1 = 1 , Mode2 = 2 , Mode3 = 3 }
	SPI encoder communication mode configuration. More...

enum class	SPIEncFreq : uint8_t { Div4 = 0 , Div5 = 1 , Div6 = 2 , Div7 = 3 , Div8 = 4 , Div9 = 5 , Div10 = 6 , Div11 = 7 , Div12 = 8 , Div13 = 9 , Div14 = 10 , Div15 = 11 , Div16 = 12 , Div17 = 13 , Div18 = 14 , Div19 = 15 }
	SPI encoder clock frequency divider configuration. More...

enum class	SPIEncCSPin : uint8_t { GPIO8 = 0 , GPIO12 = 1 , GPIO13 = 2 , GPIO16 = 3 , GPIO15_SPI1 = 0 }
	SPI encoder chip select pin selection. More...

enum class	SPIEncCSPol : uint8_t { ActiveHigh = 0 , ActiveLow = 1 }
	SPI encoder chip select polarity configuration. More...

enum class	MechBrakeOutput : uint8_t { GPIO8 = 0 , GPIO10 = 1 , GPIO18 = 2 , Y2_LS = 3 }
	Mechanical brake output pin selection. More...

enum class	BrakeChopperOutput : uint8_t { GPIO0 = 0 , GPIO1 = 1 , GPIO2 = 2 , GPIO3 = 3 , GPIO4 = 4 , GPIO5 = 5 , GPIO6 = 6 , GPIO7 = 7 , GPIO8 = 8 , GPIO9 = 9 , GPIO10 = 10 , GPIO11 = 11 , GPIO12 = 12 , GPIO13 = 13 , GPIO14 = 14 , GPIO15 = 15 , GPIO16 = 16 , GPIO17 = 17 , GPIO18 = 18 , Y2_HS = 19 }
	Brake chopper output pin selection for dynamic braking. More...

enum class	MemStorage : uint8_t { Disabled = 0 , SPIFlash = 1 , I2CEEPROM = 2 }
	External memory storage type selection. More...

Detailed Description

Bootloader configuration namespace containing all configuration structures and enums.

This namespace contains all the configuration structures, enumerations, and constants needed to configure the TMC9660 bootloader. These structures define hardware pin assignments, communication parameters, power supply settings, and system behavior options.

Enumeration Type Documentation

◆ ABN1APin

enum class tmc9660::bootcfg::ABN1APin : uint8_t

strong

ABN encoder 1 A-phase pin selection for incremental encoder feedback.

Selects which GPIO pin is used for the ABN encoder 1 A-phase signal. Used for precise position and velocity feedback from incremental encoders.

Enumerator
GPIO5	Use GPIO5 for ABN1 A-phase (default)
GPIO8	Use GPIO8 for ABN1 A-phase.
GPIO17	Use GPIO17 for ABN1 A-phase.

◆ ABN1BPin

enum class tmc9660::bootcfg::ABN1BPin : uint8_t

strong

ABN encoder 1 B-phase pin selection for incremental encoder feedback.

Selects which GPIO pin is used for the ABN encoder 1 B-phase signal. Used for precise position and velocity feedback from incremental encoders.

Enumerator
GPIO1	Use GPIO1 for ABN1 B-phase (default)
GPIO13	Use GPIO13 for ABN1 B-phase.
GPIO18	Use GPIO18 for ABN1 B-phase.

◆ ABN1NPin

enum class tmc9660::bootcfg::ABN1NPin : uint8_t

strong

ABN encoder 1 index pin selection for incremental encoder feedback.

Selects which GPIO pin is used for the ABN encoder 1 index (Z) signal. The index signal provides a reference position for absolute positioning.

Enumerator
Disabled	No index pin (index signal not used)
GPIO14	Use GPIO14 for ABN1 index signal.
GPIO16	Use GPIO16 for ABN1 index signal.

◆ ABN2APin

enum class tmc9660::bootcfg::ABN2APin : uint8_t

strong

ABN encoder 2 A-phase pin selection for second incremental encoder.

Selects which GPIO pin is used for the ABN encoder 2 A-phase signal. Used for dual-encoder applications or secondary position feedback.

Enumerator
GPIO6	Use GPIO6 for ABN2 A-phase (default)
GPIO15	Use GPIO15 for ABN2 A-phase.

◆ ABN2BPin

enum class tmc9660::bootcfg::ABN2BPin : uint8_t

strong

ABN encoder 2 B-phase pin selection for second incremental encoder.

Selects which GPIO pin is used for the ABN encoder 2 B-phase signal. Used for dual-encoder applications or secondary position feedback.

Enumerator
GPIO7	Use GPIO7 for ABN2 B-phase (default)
GPIO11	Use GPIO11 for ABN2 B-phase.
GPIO16	Use GPIO16 for ABN2 B-phase.

◆ BaudRate

enum class tmc9660::bootcfg::BaudRate : uint8_t

strong

UART baud rate configuration for bootloader communication.

Configures the UART communication speed. Auto modes detect the baud rate automatically by analyzing the received data pattern.

Enumerator
BR9600	9600 baud (slowest, most reliable)
BR19200	19200 baud
BR38400	38400 baud
BR57600	57600 baud
BR115200	115200 baud (recommended for most applications)
BR1000000	1000000 baud (1 Mbps, fastest)
Auto8x	Auto-detect with 8x oversampling.
Auto16x	Auto-detect with 16x oversampling (most robust)

◆ BootMode

enum class tmc9660::bootcfg::BootMode : uint8_t

strong

Boot mode selection for motor control system startup.

Determines which motor control mode the TMC9660 will enter after bootloader configuration is complete and START_MOTOR_CTRL is set.

Enumerator
Register	Register mode - direct register access for motor control.
Parameter	Parameter mode - TMCL command-based motor control (recommended)

◆ BrakeChopperOutput

enum class tmc9660::bootcfg::BrakeChopperOutput : uint8_t

strong

Brake chopper output pin selection for dynamic braking.

Selects which output is used for the brake chopper circuit. Used for dynamic braking to quickly stop the motor by shorting the windings.

Enumerator
GPIO0	Use GPIO0 for brake chopper output.
GPIO1	Use GPIO1 for brake chopper output.
GPIO2	Use GPIO2 for brake chopper output.
GPIO3	Use GPIO3 for brake chopper output.
GPIO4	Use GPIO4 for brake chopper output.
GPIO5	Use GPIO5 for brake chopper output.
GPIO6	Use GPIO6 for brake chopper output.
GPIO7	Use GPIO7 for brake chopper output.
GPIO8	Use GPIO8 for brake chopper output.
GPIO9	Use GPIO9 for brake chopper output.
GPIO10	Use GPIO10 for brake chopper output.
GPIO11	Use GPIO11 for brake chopper output.
GPIO12	Use GPIO12 for brake chopper output.
GPIO13	Use GPIO13 for brake chopper output.
GPIO14	Use GPIO14 for brake chopper output.
GPIO15	Use GPIO15 for brake chopper output.
GPIO16	Use GPIO16 for brake chopper output.
GPIO17	Use GPIO17 for brake chopper output.
GPIO18	Use GPIO18 for brake chopper output.
Y2_HS	Use Y2_HS (high-side output) for brake chopper output.

◆ ClockSource

enum class tmc9660::bootcfg::ClockSource : uint8_t

strong

System clock source selection.

Determines whether the TMC9660 uses its internal oscillator or an external clock source for system timing.

Enumerator
Internal	Use internal oscillator (default, no external components needed)
External	Use external clock source (requires external crystal/oscillator)

◆ DirPin

enum class tmc9660::bootcfg::DirPin : uint8_t

strong

Direction pin selection for step/direction interface.

Selects which GPIO pin is used for the direction signal in step/direction mode. Used for controlling stepper motors or providing direction signals to external controllers.

Enumerator
GPIO6	Use GPIO6 for direction signal (default)
GPIO15	Use GPIO15 for direction signal.

◆ ExtSourceType

enum class tmc9660::bootcfg::ExtSourceType : uint8_t

strong

External clock source type configuration.

Specifies the type of external clock source when ClockSource::External is selected. This affects the input buffer configuration and clock processing.

Enumerator
Oscillator	External crystal oscillator (requires external crystal)
Clock	External clock signal (digital clock input)

◆ HallUPin

enum class tmc9660::bootcfg::HallUPin : uint8_t

strong

Hall encoder U-phase pin selection for BLDC motor feedback.

Selects which GPIO pin is used for the Hall sensor U-phase signal. Used for BLDC motor commutation and position feedback.

Enumerator
GPIO2	Use GPIO2 for Hall U-phase (default)
GPIO7	Use GPIO7 for Hall U-phase.
GPIO9	Use GPIO9 for Hall U-phase.

◆ HallVPin

enum class tmc9660::bootcfg::HallVPin : uint8_t

strong

Hall encoder V-phase pin selection for BLDC motor feedback.

Selects which GPIO pin is used for the Hall sensor V-phase signal. Used for BLDC motor commutation and position feedback.

Enumerator
GPIO3	Use GPIO3 for Hall V-phase (default)
GPIO15	Use GPIO15 for Hall V-phase.

◆ HallWPin

enum class tmc9660::bootcfg::HallWPin : uint8_t

strong

Hall encoder W-phase pin selection for BLDC motor feedback.

Selects which GPIO pin is used for the Hall sensor W-phase signal. Used for BLDC motor commutation and position feedback.

Enumerator
GPIO4	Use GPIO4 for Hall W-phase (default)
GPIO8	Use GPIO8 for Hall W-phase.
GPIO10	Use GPIO10 for Hall W-phase.

◆ I2CFreq

enum class tmc9660::bootcfg::I2CFreq : uint8_t

strong

I2C communication frequency configuration.

Sets the I2C clock frequency for external EEPROM communication. Higher frequencies enable faster data transfer but may be less reliable.

Enumerator
Freq100k	100 kHz (standard mode, most compatible)
Freq200k	200 kHz (fast mode)
Freq400k	400 kHz (fast mode plus)
Freq800k	800 kHz (high speed mode, fastest)

◆ I2CSclPin

enum class tmc9660::bootcfg::I2CSclPin : uint8_t

strong

I2C clock pin selection for external EEPROM communication.

Selects which GPIO pin is used for I2C SCL (serial clock) signal. Used for communication with external I2C EEPROM devices.

Enumerator
GPIO4	Use GPIO4 for I2C SCL (default)
GPIO12	Use GPIO12 for I2C SCL.
GPIO13	Use GPIO13 for I2C SCL.

◆ I2CSdaPin

enum class tmc9660::bootcfg::I2CSdaPin : uint8_t

strong

I2C data pin selection for external EEPROM communication.

Selects which GPIO pin is used for I2C SDA (serial data) signal. Used for communication with external I2C EEPROM devices.

Enumerator
GPIO5	Use GPIO5 for I2C SDA (default)
GPIO11	Use GPIO11 for I2C SDA.
GPIO14	Use GPIO14 for I2C SDA.

◆ LDOSlope

enum class tmc9660::bootcfg::LDOSlope : uint8_t

strong

LDO output slope control for power-up characteristics.

Controls the rise time of the LDO output voltage during power-up. Slower slopes reduce inrush current but increase power-up time.

Enumerator
Slope3ms	3ms rise time (slowest, lowest inrush current)
Slope1_5ms	1.5ms rise time
Slope0_75ms	0.75ms rise time
Slope0_37ms	0.37ms rise time (fastest, highest inrush current)

◆ LDOVoltage

enum class tmc9660::bootcfg::LDOVoltage : uint8_t

strong

Enumerations describing bootloader configuration options.

These enumerations define the various configuration options available for the TMC9660 bootloader, including voltage settings, communication parameters, and hardware pin configurations.

LDO voltage configuration options for external power supplies.

Configures the on-chip LDO regulators for VEXT1 and VEXT2 outputs. These voltages power external components connected to the TMC9660.

Enumerator
Disabled	LDO output disabled.
V2_5	2.5V output voltage
V3_3	3.3V output voltage
V5_0	5.0V output voltage

◆ MechBrakeOutput

enum class tmc9660::bootcfg::MechBrakeOutput : uint8_t

strong

Mechanical brake output pin selection.

Selects which output is used to control an external mechanical brake. Used for holding motor position when power is removed.

Enumerator
GPIO8	Use GPIO8 for mechanical brake control.
GPIO10	Use GPIO10 for mechanical brake control.
GPIO18	Use GPIO18 for mechanical brake control.
Y2_LS	Use Y2_LS (low-side output) for mechanical brake control.

◆ MemStorage

enum class tmc9660::bootcfg::MemStorage : uint8_t

strong

External memory storage type selection.

Configures which type of external memory is used for storing TMCL scripts and parameter data.

Enumerator
Disabled	No external memory (disabled)
SPIFlash	Use SPI flash memory for storage.
I2CEEPROM	Use I2C EEPROM for storage.

◆ RefHPin

enum class tmc9660::bootcfg::RefHPin : uint8_t

strong

Reference switch home pin selection for home position detection.

Selects which GPIO pin is used for the home reference switch signal. Used for detecting the home position during homing sequences.

Enumerator
Disabled	No home reference switch (disabled)
GPIO4	Use GPIO4 for home reference switch.
GPIO7	Use GPIO7 for home reference switch.
GPIO15	Use GPIO15 for home reference switch.
GPIO17	Use GPIO17 for home reference switch.

◆ RefLPin

enum class tmc9660::bootcfg::RefLPin : uint8_t

strong

Reference switch left pin selection for limit switch detection.

Selects which GPIO pin is used for the left reference switch signal. Used for detecting mechanical limits and home position.

Enumerator
Disabled	No left reference switch (disabled)
GPIO2	Use GPIO2 for left reference switch.
GPIO12	Use GPIO12 for left reference switch.
GPIO16	Use GPIO16 for left reference switch.

◆ RefRPin

enum class tmc9660::bootcfg::RefRPin : uint8_t

strong

Reference switch right pin selection for limit switch detection.

Selects which GPIO pin is used for the right reference switch signal. Used for detecting mechanical limits and home position.

Enumerator
Disabled	No right reference switch (disabled)
GPIO3	Use GPIO3 for right reference switch.
GPIO18	Use GPIO18 for right reference switch.

◆ RS485TxEnPin

enum class tmc9660::bootcfg::RS485TxEnPin : uint8_t

strong

RS485 transmit enable pin selection for half-duplex communication.

Selects which GPIO pin controls the RS485 transceiver's transmit enable. When None is selected, RS485 mode is disabled.

Enumerator
None	No RS485 TX enable pin (RS485 disabled)
GPIO8	Use GPIO8 for RS485 TX enable.
GPIO2	Use GPIO2 for RS485 TX enable.

◆ SPI0SckPin

enum class tmc9660::bootcfg::SPI0SckPin : uint8_t

strong

SPI0 clock pin selection for bootloader communication.

Selects which GPIO pin is used for SPI0 SCK (serial clock) signal. This affects the bootloader communication interface.

Enumerator
GPIO6	Use GPIO6 for SPI0 SCK (default)
GPIO11	Use GPIO11 for SPI0 SCK (alternative)

◆ SPIEncBlock

enum class tmc9660::bootcfg::SPIEncBlock : uint8_t

strong

SPI encoder interface block selection.

Selects which SPI interface is used for communication with external SPI-based encoders or position sensors.

Enumerator
SPI0	Use SPI interface 0 for encoder communication.
SPI1	Use SPI interface 1 for encoder communication.

◆ SPIEncCSPin

enum class tmc9660::bootcfg::SPIEncCSPin : uint8_t

strong

SPI encoder chip select pin selection.

Selects which GPIO pin is used for the SPI encoder chip select signal. The available pins depend on which SPI interface is selected.

Enumerator
GPIO8	Use GPIO8 for SPI0 encoder CS.
GPIO12	Use GPIO12 for SPI0 encoder CS.
GPIO13	Use GPIO13 for SPI0 encoder CS.
GPIO16	Use GPIO16 for SPI0 encoder CS.
GPIO15_SPI1	Use GPIO15 for SPI1 encoder CS.

◆ SPIEncCSPol

enum class tmc9660::bootcfg::SPIEncCSPol : uint8_t

strong

SPI encoder chip select polarity configuration.

Configures the active level of the chip select signal for SPI encoder communication. Most SPI devices use active-low chip select.

Enumerator
ActiveHigh	Chip select active high (CS high = selected)
ActiveLow	Chip select active low (CS low = selected, most common)

◆ SPIEncFreq

enum class tmc9660::bootcfg::SPIEncFreq : uint8_t

strong

SPI encoder clock frequency divider configuration.

Controls the SPI clock frequency for encoder communication. Higher divider values result in slower, more reliable communication.

Enumerator
Div4	Divide by 4 (fastest)
Div5	Divide by 5.
Div6	Divide by 6.
Div7	Divide by 7.
Div8	Divide by 8.
Div9	Divide by 9.
Div10	Divide by 10.
Div11	Divide by 11.
Div12	Divide by 12.
Div13	Divide by 13.
Div14	Divide by 14.
Div15	Divide by 15.
Div16	Divide by 16.
Div17	Divide by 17.
Div18	Divide by 18.
Div19	Divide by 19 (slowest, most reliable)

◆ SPIEncMode

enum class tmc9660::bootcfg::SPIEncMode : uint8_t

strong

SPI encoder communication mode configuration.

Configures the SPI mode for encoder communication. Different encoders may require different SPI modes for proper communication.

Enumerator
Mode0	SPI Mode 0 (CPOL=0, CPHA=0)
Mode1	SPI Mode 1 (CPOL=0, CPHA=1)
Mode2	SPI Mode 2 (CPOL=1, CPHA=0)
Mode3	SPI Mode 3 (CPOL=1, CPHA=1)

◆ SPIFlashFreq

enum class tmc9660::bootcfg::SPIFlashFreq : uint8_t

strong

SPI flash frequency divider configuration.

Controls the SPI clock frequency for external flash communication. Higher divider values result in slower, more reliable communication.

Enumerator
Div1	No division (fastest, may be unreliable)
Div2	Divide by 2 (medium speed)
Div4	Divide by 4 (slowest, most reliable)

◆ SPIInterface

enum class tmc9660::bootcfg::SPIInterface : uint8_t

strong

SPI interface selection for bootloader and flash communication.

The TMC9660 has two physical SPI interfaces: SPI0 and SPI1.

CRITICAL: BL_SPI_SELECT (bit 2 of COMM_CONFIG) has OPPOSITE meanings:

For Bootloader: BL_SPI_SELECT=0 means SPI0, BL_SPI_SELECT=1 means SPI1
For Flash: BL_SPI_SELECT=0 means SPI1, BL_SPI_SELECT=1 means SPI0 (inverted!)

This enum uses the PHYSICAL interface names (SPI0/SPI1). The driver handles the bit inversion automatically in applyConfiguration().

Constraint: If both bootloader and flash are enabled, they MUST use different SPI interfaces (one on SPI0, the other on SPI1).

Enumerator
SPI0	Physical SPI0 interface.
SPI1	Physical SPI1 interface.

◆ StepPin

enum class tmc9660::bootcfg::StepPin : uint8_t

strong

Step pin selection for step/direction interface.

Selects which GPIO pin is used for the step signal in step/direction mode. Used for controlling stepper motors or providing step pulses to external controllers.

Enumerator
GPIO7	Use GPIO7 for step signal (default)
GPIO11	Use GPIO11 for step signal.
GPIO16	Use GPIO16 for step signal.

◆ SysClkDiv

enum class tmc9660::bootcfg::SysClkDiv : uint8_t

strong

System clock divider configuration.

Divides the system clock to achieve the desired operating frequency. Lower divider values result in higher system clock frequencies.

Enumerator
Div1	No division (40 MHz system clock)
Div15MHz	Divide by 3 (15 MHz system clock, lower power)

◆ SysClkSource

enum class tmc9660::bootcfg::SysClkSource : uint8_t

strong

System clock source selection after initial oscillator.

Determines whether the system clock is derived directly from the oscillator or through the PLL (Phase-Locked Loop) for frequency multiplication.

Enumerator
IntOsc	Use internal oscillator directly (lower power, fixed frequency)
PLL	Use PLL for frequency multiplication (higher performance, configurable)

◆ UartRxPin

enum class tmc9660::bootcfg::UartRxPin : uint8_t

strong

UART receive pin selection for bootloader communication.

Selects which GPIO pin is used for UART RX signal during bootloader mode.

Enumerator
GPIO7	Use GPIO7 for UART RX (default)
GPIO1	Use GPIO1 for UART RX (alternative)

◆ UartTxPin

enum class tmc9660::bootcfg::UartTxPin : uint8_t

strong

UART transmit pin selection for bootloader communication.

Selects which GPIO pin is used for UART TX signal during bootloader mode.

Enumerator
GPIO6	Use GPIO6 for UART TX (default)
GPIO0	Use GPIO0 for UART TX (alternative)

◆ XtalDrive

enum class tmc9660::bootcfg::XtalDrive : uint8_t

strong

Crystal drive strength configuration for external oscillators.

Configures the drive strength of the internal oscillator when using an external crystal. Higher drive strength is needed for higher frequency crystals.

Enumerator
Freq8MHz	8 MHz crystal drive strength
Freq16MHz	16 MHz crystal drive strength (recommended)
Freq24MHz	24 MHz crystal drive strength
Freq32MHz	32 MHz crystal drive strength (highest frequency)