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master
Gerolf Ziegenhain 2016-10-04 17:14:08 +02:00
parent 4f08a0c6c7
commit 4a2e3ca88f
1 changed files with 0 additions and 28 deletions
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28
src/beep.c
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@ -164,29 +164,9 @@ int beep_close()
int beep_test(void)
{
// notes frequency chart: http://www.phy.mtu.edu/~suits/notefreqs.html
buzzer_start();
buzzer_set_freq(261);
msleep(250);
buzzer_set_freq(0);
msleep(250);
buzzer_set_freq(329);
msleep(250);
buzzer_set_freq(349);
msleep(250);
buzzer_set_freq(392);
msleep(250);
buzzer_set_freq(440);
msleep(250);
buzzer_set_freq(494);
msleep(250);
buzzer_beep(523, 200);
msleep(250);
buzzer_stop();
return 0;
}
@ -196,20 +176,12 @@ int beep_test(void)
// Raspi does not work with portaudio?!
#ifdef ALSA
/*
* This extra small demo sends sinusoidal samples to your speakers.
*/
// https://www.raspberrypi.org/forums/viewtopic.php?t=84485&p=603451
static char *device = "hw:0,0"; /* playback device */
snd_output_t *output = NULL;
snd_pcm_t *handle;
int beep_test(void)
{
}
int beep(double freq_hz, double duration_sec)
{
double p1,p2,f1,f2;