upm/examples/c/cjq4435.c
Mihai Tudor Panu 89d5de43e0 license: update to SPDX style license text throughout
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
2020-03-05 15:13:36 -08:00

70 lines
1.4 KiB
C

/*
* Author: Jon Trulson <jtrulson@ics.com>
* Copyright (c) 2017 Intel Corporation.
*
* This program and the accompanying materials are made available under the
* terms of the The MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
*/
#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);
//! [Interesting]
// 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);
//! [Interesting]
return 0;
}