es08a.h File Reference

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API Description

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Data Structures
struct	_es08a_context

Functions
es08a_context	es08a_init (int32_t pin, int32_t min_pulse_width, int32_t max_pulse_width)
void	es08a_halt (es08a_context dev)
upm_result_t	es08a_set_angle (es08a_context dev, int32_t angle)
upm_result_t	es08a_calc_pulse_travelling (const es08a_context dev, int32_t *ret_val, int32_t value)
void	es08a_set_min_pulse_width (es08a_context dev, int width)
void	es08a_set_max_pulse_width (es08a_context dev, int width)
int	es08a_get_min_pulse_width (es08a_context dev)
int	es08a_get_max_pulse_width (es08a_context dev)

Macros
#define	ES08A_MIN_PULSE_WIDTH   600
#define	ES08A_MAX_PULSE_WIDTH   2200
#define	ES08A_PERIOD   20000
#define	ES08A_MAX_ANGLE   180.0

Typedefs
typedef struct _es08a_context *	es08a_context

Function Documentation

es08a_context es08a_init	(	int32_t	pin,
		int32_t	min_pulse_width,
		int32_t	max_pulse_width
	)

Instantiates a the servo at the given pin

Parameters

pin	Servo pin number
minPulseWidth	Minimum pulse width, in microseconds
maxPulseWidth	Maximum pulse width, in microseconds
waitAndDisablePwm	If 1, PWM is enabled only during the setAngle() execution for a period of 1 second, and then turned back off. If 0, PWM remains on afterward.

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void es08a_halt

(

es08a_context

dev

)

Halts PWM for this servo and allows it to move freely.

upm_result_t es08a_set_angle	(	es08a_context	dev,
		int32_t	angle
	)

Sets the angle of the servo engine.

Parameters

angle

Number between 0 and 180

Returns

0 if successful, non-zero otherwise

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void es08a_set_min_pulse_width	(	es08a_context	dev,
		int	width
	)

Sets the minimum pulse width

Parameters

width

Minimum HIGH signal width

void es08a_set_max_pulse_width	(	es08a_context	dev,
		int	width
	)

Sets the maximum pulse width

Parameters

width

Maximum HIGH signal width

int es08a_get_min_pulse_width

(

es08a_context

dev

)

Returns the minimum pulse width

Returns

Minimum pulse width

int es08a_get_max_pulse_width

(

es08a_context

dev

)

Returns the maximum pulse width

Returns

Maximum pulse width

Typedef Documentation

typedef struct _es08a_context * es08a_context

device context