6c85b61daa
Should have 0 functionality effect, just cleans up a few things. Fixes #577 Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
/*
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* Author: Thomas Ingleby <thomas.c.ingleby@intel.com>
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* Copyright (c) 2014 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <unistd.h>
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#include "mraa.h"
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int
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main()
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{
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mraa_init();
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//! [Interesting]
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mraa_pwm_context pwm;
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pwm = mraa_pwm_init(3);
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if (pwm == NULL) {
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return 1;
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}
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mraa_pwm_period_us(pwm, 200);
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mraa_pwm_enable(pwm, 1);
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float value = 0.0f;
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while (1) {
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value = value + 0.01f;
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mraa_pwm_write(pwm, value);
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usleep(50000);
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if (value >= 1.0f) {
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value = 0.0f;
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}
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float output = mraa_pwm_read(pwm);
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printf("PWM value is %f\n", output);
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}
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//! [Interesting]
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return 0;
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}
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