servo_params.h File Reference

Default configuration for servo devices. More...

Detailed Description

Default configuration for servo devices.

Author

Marian Buschsieweke maria.nosp@m.n.bu.nosp@m.schsi.nosp@m.ewek.nosp@m.e@ovg.nosp@m.u.de

Definition in file servo_params.h.

#include "board.h"
#include "macros/units.h"
#include "periph/gpio.h"
#include "periph/pwm.h"
#include "periph/timer.h"
#include "saul_reg.h"
#include "servo.h"

Include dependency graph for servo_params.h:

Go to the source code of this file.

Macros
#define	SERVO_SAULINFO   { .name = "servo" }
	Servo SAUL info.

Variables
static const servo_pwm_params_t	servo_pwm_params []
	Servo PWM parameters.
static const servo_timer_params_t	servo_timer_params []
	Servo timer parameters.
static const servo_params_t	servo_params []
	Parameters for controlling a servo.
static const saul_reg_info_t	servo_saul_info []
	Allocate and configure entries to the SAUL registry.

Default servo PWM configuration
#define	SERVO_PWM_PARAM_DEV   PWM_DEV(0)
	PWM device to use to control the servo.
#define	SERVO_PWM_PARAM_RES   UINT16_MAX
	PWM resolution to use to control the servo.
#define	SERVO_PWM_PARAM_FREQ   50
	PWM frequency in Hertz to use to control the servo.
#define	SERVO_PWM_PARAMS
	PWM parameters for controlling a servo.

Default servo timer configuration
#define	SERVO_TIMER_PARAM_DEV   TIMER_DEV(1)
	Timer to use to control the servo.
#define	SERVO_TIMER_PARAM_TIMER_FREQ   MHZ(1)
	Timer frequency to use to control the servo in Hz.
#define	SERVO_TIMER_PARAM_SERVO_FREQ   50
	Servo frequency in Hertz.
#define	SERVO_TIMER_PARAM_TIMER_CTX   (&servo_timer_default_ctx)
	Memory needed for book keeping.
#define	SERVO_TIMER_PARAMS
	TIMER parameters for controlling a servo.
servo_timer_ctx_t	servo_timer_default_ctx
	Default servo timer context.

Default servo configuration
#define	SERVO_PARAM_PWM_PARAMS   (&servo_pwm_params[0])
	PWM parameters.
#define	SERVO_PARAM_TIMER_PARAMS   (&servo_timer_params[0])
	Timer parameters.
#define	SERVO_PARAM_PWM_CHAN   0
	PWM channel to use to control the servo.
#define	SERVO_PARAM_TIMER_CHAN   1
	Timer channel used to clear the servo pin.
#define	SERVO_PARAM_PIN   GPIO_UNDEF
	GPIO pin the servo input is connected to.
#define	SERVO_PARAM_MIN_US   900UL
	Minimum time in µs of a pulse (corresponds to minimum extension)
#define	SERVO_PARAM_MAX_US   2100UL
	Maximum time in µs of a pulse (corresponds to maximum extension)

Macro Definition Documentation

SERVO_PARAM_MAX_US

#define SERVO_PARAM_MAX_US   2100UL

Maximum time in µs of a pulse (corresponds to maximum extension)

Defaults to 2100UL.

Definition at line 217 of file servo_params.h.

SERVO_PARAM_MIN_US

#define SERVO_PARAM_MIN_US   900UL

Minimum time in µs of a pulse (corresponds to minimum extension)

Defaults to 900UL.

Definition at line 208 of file servo_params.h.

SERVO_PARAM_PIN

#define SERVO_PARAM_PIN   GPIO_UNDEF

GPIO pin the servo input is connected to.

Note

Only used with periph_timer_periodic based servo driver

Definition at line 199 of file servo_params.h.

SERVO_PARAM_PWM_CHAN

#define SERVO_PARAM_PWM_CHAN   0

PWM channel to use to control the servo.

Defaults to 0

Definition at line 181 of file servo_params.h.

SERVO_PARAM_PWM_PARAMS

#define SERVO_PARAM_PWM_PARAMS   (&servo_pwm_params[0])

PWM parameters.

Defaults to &servo_pwm_params[0].

Definition at line 163 of file servo_params.h.

SERVO_PARAM_TIMER_CHAN

#define SERVO_PARAM_TIMER_CHAN   1

Timer channel used to clear the servo pin.

Defaults to 1

Definition at line 190 of file servo_params.h.

SERVO_PARAM_TIMER_PARAMS

#define SERVO_PARAM_TIMER_PARAMS   (&servo_timer_params[0])

Timer parameters.

Defaults to &servo_timer_params[0].

Definition at line 172 of file servo_params.h.

SERVO_PWM_PARAM_DEV

#define SERVO_PWM_PARAM_DEV   PWM_DEV(0)

PWM device to use to control the servo.

Defaults to PWM_DEV(0).

Definition at line 43 of file servo_params.h.

SERVO_PWM_PARAM_FREQ

#define SERVO_PWM_PARAM_FREQ   50

PWM frequency in Hertz to use to control the servo.

Defaults to 50UL Hz.

Definition at line 61 of file servo_params.h.

SERVO_PWM_PARAM_RES

#define SERVO_PWM_PARAM_RES   UINT16_MAX

PWM resolution to use to control the servo.

Defaults to UINT16_MAX.

Definition at line 52 of file servo_params.h.

SERVO_PWM_PARAMS

#define SERVO_PWM_PARAMS

Value:

        {\
        .pwm    = SERVO_PWM_PARAM_DEV, \
        .freq   = SERVO_PWM_PARAM_FREQ, \
        .res    = SERVO_PWM_PARAM_RES, \
    }

PWM parameters for controlling a servo.

Definition at line 68 of file servo_params.h.

SERVO_SAULINFO

#define SERVO_SAULINFO   { .name = "servo" }

Servo SAUL info.

Definition at line 256 of file servo_params.h.

SERVO_TIMER_PARAM_DEV

#define SERVO_TIMER_PARAM_DEV   TIMER_DEV(1)

Timer to use to control the servo.

Defaults to TIMER_DEV(1).

Definition at line 94 of file servo_params.h.

SERVO_TIMER_PARAM_SERVO_FREQ

#define SERVO_TIMER_PARAM_SERVO_FREQ   50

Servo frequency in Hertz.

Defaults to 50UL Hz.

Definition at line 112 of file servo_params.h.

SERVO_TIMER_PARAM_TIMER_CTX

#define SERVO_TIMER_PARAM_TIMER_CTX   (&servo_timer_default_ctx)

Memory needed for book keeping.

Defaults to &servo_timer_default_ctx. One context per timer used is needed. E.g. when 4 servos are connected but all are controlled with the same timer peripheral, only one context is needed.

Definition at line 129 of file servo_params.h.

SERVO_TIMER_PARAM_TIMER_FREQ

#define SERVO_TIMER_PARAM_TIMER_FREQ   MHZ(1)

Timer frequency to use to control the servo in Hz.

Defaults to 1 MHz

Definition at line 103 of file servo_params.h.

SERVO_TIMER_PARAMS

#define SERVO_TIMER_PARAMS

Value:

        {\
        .timer      = SERVO_TIMER_PARAM_DEV, \
        .timer_freq = SERVO_TIMER_PARAM_TIMER_FREQ, \
        .servo_freq = SERVO_TIMER_PARAM_SERVO_FREQ, \
        .ctx        = SERVO_TIMER_PARAM_TIMER_CTX, \
    }

TIMER parameters for controlling a servo.

Definition at line 136 of file servo_params.h.

Variable Documentation

servo_params

const servo_params_t servo_params[]

static

Initial value:

=
{
    SERVO_PARAMS
}

Parameters for controlling a servo.

Servo configuration

Definition at line 247 of file servo_params.h.

servo_pwm_params

const servo_pwm_params_t servo_pwm_params[]

static

Initial value:

=
{
    SERVO_PWM_PARAMS
}

Servo PWM parameters.

Definition at line 79 of file servo_params.h.

servo_saul_info

const saul_reg_info_t servo_saul_info[]

static

Initial value:

=
{
    SERVO_SAULINFO
}

Allocate and configure entries to the SAUL registry.

Definition at line 262 of file servo_params.h.

servo_timer_default_ctx

servo_timer_ctx_t servo_timer_default_ctx

extern

Default servo timer context.

Allocated in drivers/servo/timer.c

servo_timer_params

const servo_timer_params_t servo_timer_params[]

static

Initial value:

=
{
    SERVO_TIMER_PARAMS
}

Servo timer parameters.

Definition at line 148 of file servo_params.h.