Include dependency graph for cjq4435.h:

API Description

/*
 * Author: Jon Trulson <jtrulson@ics.com>
 * Copyright (c) 2017 Intel Corporation.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
#include <unistd.h>
#include <signal.h>
#include <upm_utilities.h>
#include "cjq4435.h"
int shouldRun = true;
void sig_handler(int signo)
{
    if (signo == SIGINT)
        shouldRun = false;
}
int main ()
{
    signal(SIGINT, sig_handler);
    // Instantiate a CJQ4435 MOSFET on a PWM capable digital pin D3
    cjq4435_context mosfet = cjq4435_init(3);
    if (!mosfet)
    {
        printf("cjq4435_init() failed.\n");
        return 1;
    }
    cjq4435_set_period_ms(mosfet, 10);
    cjq4435_enable(mosfet, true);
    while (shouldRun)
    {
        // start with a duty cycle of 0.0 (off) and increment to 1.0 (on)
        for (float i=0.0; i <= 1.0; i+=0.1)
        {
            cjq4435_set_duty_cycle(mosfet, i);
            upm_delay_ms(100);
        }
        upm_delay(1);
        // Now bring it back down
        // start with a duty cycle of 1.0 (on) and decrement to 0.0 (off)
        for (float i=1.0; i >= 0.0; i-=0.1)
        {
            cjq4435_set_duty_cycle(mosfet, i);
            upm_delay_ms(100);
        }
        upm_delay(1);
    }
    printf("Exiting...\n");
    cjq4435_close(mosfet);
    return 0;
}

Go to the source code of this file.

Data Structures
struct	_cjq4435_context

Functions
cjq4435_context	cjq4435_init (int pin)

void	cjq4435_close (cjq4435_context dev)

upm_result_t	cjq4435_set_period_us (const cjq4435_context dev, int us)

upm_result_t	cjq4435_set_period_ms (const cjq4435_context dev, int us)

upm_result_t	cjq4435_set_period_seconds (const cjq4435_context dev, float seconds)

upm_result_t	cjq4435_enable (const cjq4435_context dev, bool enable)

upm_result_t	cjq4435_set_duty_cycle (const cjq4435_context dev, float dutyCycle)

void	cjq4435_on (const cjq4435_context dev)

void	cjq4435_off (const cjq4435_context dev)

Typedefs
typedef struct _cjq4435_context *	cjq4435_context

Function Documentation

cjq4435_context cjq4435_init ( int pin )

CJQ4435 initializer

Parameters

pin	Digital pin to use; this pin must be PWM-capable

Returns: Initialized device context, or NULL on error.

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void cjq4435_close ( cjq4435_context dev )

CJQ4435 destructor

Parameters

dev	Device context

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upm_result_t cjq4435_set_period_us	(	const cjq4435_context	dev,
		int	us
	)

Sets a period in microseconds

Parameters

dev	Device context
us	Period in microseconds

Returns: UPM result

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upm_result_t cjq4435_set_period_ms	(	const cjq4435_context	dev,
		int	us
	)

Sets a period in milliseconds

Parameters

dev	Device context
ms	Period in milliseconds

Returns: UPM result

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upm_result_t cjq4435_set_period_seconds	(	const cjq4435_context	dev,
		float	seconds
	)

Sets a period in seconds

Parameters

dev	Device context
seconds	Period in seconds

Returns: UPM result

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upm_result_t cjq4435_enable	(	const cjq4435_context	dev,
		bool	enable
	)

Enables output

Parameters

dev	Device context
enable	Enables PWM output if true, disables otherwise

Returns: UPM result

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upm_result_t cjq4435_set_duty_cycle	(	const cjq4435_context	dev,
		float	dutyCycle
	)

Sets a duty cycle. Duty cycle is a floating-point number between 0.0 (always off) and 1.0 (always on). It represents a proportion of time, per period, during which the output is driven high.

Parameters