Thank you @redvli
I notice you're using pigpio, not the daemon pigpiod, so I thought I'd give that a try again. I had abandoned that early on because it proved a problem to run my program with root (sudo); it doesn't have a keyboard, but I could see on the screen that it wanted me to enter a password when it tried to execute sudo piSoundTest.
For background, I have this display...
https://www.pishop.ca/product/4-3inch-c ... e-800-480/
I made an Alarm Clock/Radio with it. The "radio" is actually a music player that uses gstreamer to randomly play a song from my NAS server. It detects when a paired/trusted Bluetooth headphone or speaker comes online, and automatically starts playing. It stops playing when the headset/speaker disconnects. This all works fine. Now I just wanted to use some simple monotonic songs for the alarm clock. I had done something similar with a pico, and it worked fine. I foolishly assumed it would not be such a major pain to do it on the pi4..... HA!
So, the 'meat' of the program is changed to...The output from each note is displayed as...Now, it went from bad to worse. Although all the notes do play, none of them are what I asked for. ![:(]( "Sad")
I tried different settings for gpioCfgClock() and range. I haven't found any settings yet that make this work.
At this point, I'm ready to give up on playing tunes, and just do a boring beep beep beep at a frequency that works!
As far as using the built-in audio, I disabled it because I only want pulseaudio to find BT devices, and also don't want more wires connected to the box, just power.
I notice you're using pigpio, not the daemon pigpiod, so I thought I'd give that a try again. I had abandoned that early on because it proved a problem to run my program with root (sudo); it doesn't have a keyboard, but I could see on the screen that it wanted me to enter a password when it tried to execute sudo piSoundTest.
For background, I have this display...
https://www.pishop.ca/product/4-3inch-c ... e-800-480/
I made an Alarm Clock/Radio with it. The "radio" is actually a music player that uses gstreamer to randomly play a song from my NAS server. It detects when a paired/trusted Bluetooth headphone or speaker comes online, and automatically starts playing. It stops playing when the headset/speaker disconnects. This all works fine. Now I just wanted to use some simple monotonic songs for the alarm clock. I had done something similar with a pico, and it worked fine. I foolishly assumed it would not be such a major pain to do it on the pi4..... HA!
So, the 'meat' of the program is changed to...
Code:
gpioCfgClock(2, 0,0 );if ((hPigpio = gpioInitialise()) != PI_INIT_FAILED){if ( (range = gpioSetPWMrange(PWM_PIN, PIGPIO_100_PERCENT_DUTY)) > 0){// set the modes for gpio pinsgpioSetMode(SCOPE_TRIGGER, PI_OUTPUT);} else hPigpio = PI_INIT_FAILED;for (octave = 0; octave < 8; octave++){gpioWrite(SCOPE_TRIGGER,0);// trigger the logic analyser for each octaveusleep(25000);gpioWrite(SCOPE_TRIGGER,1);usleep(25000);printf("Octave %d\n", octave);for (i = 0; i < 12; i++){freq = frequencies[i] * (1 << octave);freq = round(freq);if ( ( ifreq = gpioSetPWMfrequency(PWM_PIN, freq ) ) > 0 ){usleep(500000);// .5 secgpioPWM(PWM_PIN, PIGPIO_50_PERCENT_DUTY );printf(" Note %4s Requested Freq = %5.0f Given Freq = %d\n", pstrNotes[i], freq, ifreq);usleep(500000);// .5 secgpioPWM(PWM_PIN, 0 );} else printf("gpioSetPWMfrequency() Octave %d, note %d (freq %f) failed.. rc= %d\n", octave, i, freq, ifreq);}usleep(500000); // .5 sec}//gpioTerminate();} else hPigpio = PI_INIT_FAILED;Code:
Octave 3 Note C Requested Freq = 131 Given Freq = 125 Note Db Requested Freq = 139 Given Freq = 125 Note D Requested Freq = 147 Given Freq = 125 Note Eb Requested Freq = 156 Given Freq = 125 Note E Requested Freq = 165 Given Freq = 200 Note F Requested Freq = 175 Given Freq = 200 Note Gb Requested Freq = 185 Given Freq = 200 Note G Requested Freq = 196 Given Freq = 200 Note Ab Requested Freq = 208 Given Freq = 200 Note A Requested Freq = 220 Given Freq = 200 Note Bb Requested Freq = 233 Given Freq = 250 Note B Requested Freq = 247 Given Freq = 250Octave 4 Note C Requested Freq = 262 Given Freq = 250 Note Db Requested Freq = 277 Given Freq = 250 Note D Requested Freq = 294 Given Freq = 250 Note Eb Requested Freq = 311 Given Freq = 250 Note E Requested Freq = 330 Given Freq = 400 Note F Requested Freq = 349 Given Freq = 400 Note Gb Requested Freq = 370 Given Freq = 400 Note G Requested Freq = 392 Given Freq = 400 Note Ab Requested Freq = 415 Given Freq = 400 Note A Requested Freq = 440 Given Freq = 400 Note Bb Requested Freq = 466 Given Freq = 500 Note B Requested Freq = 494 Given Freq = 500
I tried different settings for gpioCfgClock() and range. I haven't found any settings yet that make this work.
At this point, I'm ready to give up on playing tunes, and just do a boring beep beep beep at a frequency that works!
As far as using the built-in audio, I disabled it because I only want pulseaudio to find BT devices, and also don't want more wires connected to the box, just power.
Statistics: Posted by ronter — Thu Mar 27, 2025 6:57 pm