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buzzer player
Posted: Fri Aug 05, 2016 9:50 pm
by sdalu
I've written a small code to allow basic control of a buzzer and to play "melody" (using a compact format)
I'm putting the link here, if it can be useful to someone else.
https://github.com/sdalu/kakapo
Re: buzzer player
Posted: Tue Aug 09, 2016 6:33 am
by acr
volume is missing in BuzzerConfig
Re: buzzer player
Posted: Tue Aug 09, 2016 6:42 am
by acr
i get from ruby
kakapo.rb:184: syntax error, unexpected '.'
... return if delta_error&.< edlt # Ensure ac...
... ^
kakapo.rb:185: syntax error, unexpected '.'
return if pct_error&.< epct # Ensure ...
^
kakapo.rb:184: syntax error, unexpected '.'
... return if delta_error&.< edlt # Ensure ac...
... ^
kakapo.rb:185: syntax error, unexpected '.'
return if pct_error&.< epct # Ensure ...
^
kakapo.rb:184: syntax error, unexpected '.'
... return if delta_error&.< edlt # Ensure ac...
... ^
kakapo.rb:185: syntax error, unexpected '.'
return if pct_error&.< epct # Ensure ...
^
kakapo.rb:184: syntax error, unexpected '.'
... return if delta_error&.< edlt # Ensure ac...
... ^
kakapo.rb:185: syntax error, unexpected '.'
return if pct_error&.< epct # Ensure ...
^
i really hate ruby
Re: buzzer player
Posted: Tue Aug 09, 2016 10:04 pm
by sdalu
Hi.
You need to use ruby 2.3, due to the &. syntax and some of the Enumerable methods
Volume is currently not handled by the driver as it is not possible to control it by using only the pwm driver.
It would requires additional circuitry to control it using the voltage. If you can provide me with the schematic, I could add the code.
If I'm wrong let me now, as electronic is not my strength.
Sincerly
Re: buzzer player
Posted: Fri Feb 17, 2017 11:52 am
by rmozel
Dear sdalu,
I have some difficulties to make your kakapo library to work with my STM32F401 Nucleo based board. It successfully executes buzzer_init() but gets stuck at buzzer_melody, _ring, or _beep. If you kindly provide your main.c together with appropriate configuration files, e.g., halconf, mcuconf, and board.h), I will be appreciated.
Regards,
Renan
Re: buzzer player
Posted: Tue Feb 28, 2017 10:55 am
by sdalu
Hi,
That's what I'm using
(sorry for the delay, these times, I'm not actively reading the forum)
I'm using standard halconf/mcuconf for the STM32F042K6 with PWM enabled
Code: Select all
// PWM
static const PWMConfig pwm_cfg = {
.frequency = 1000000, /* 1MHz PWM clock frequency. */
.period = 250, /* Initial PWM period 250µs. */
.channels = {
{ .mode = PWM_OUTPUT_ACTIVE_HIGH },
}
};
// Buzzer
static const BuzzerConfig buzzer_cfg = {
.pwm = &PWMD1,
.channel = 0,
};
char melody_zelda[] = {
0xfa, 0xfa, 0xfd, 0x8d, 0x51, 0x02, 0x4a, 0x04,
0x4d, 0x02, 0x51, 0x02, 0x4a, 0x04, 0x4d, 0x02,
0x51, 0x01, 0x54, 0x01, 0x53, 0x02, 0x4f, 0x02,
0x4d, 0x01, 0x4f, 0x01, 0x51, 0x02, 0x4a, 0x02,
0x48, 0x01, 0x4c, 0x01, 0x4a, 0x83, 0x00, 0xff };
struct buzzer BZZR1;
main() {
palSetPadMode(GPIOA, 8, PAL_MODE_ALTERNATE(2));
pwmStart(&PWMD1, &pwm_cfg);
pwmDisableChannel(&PWMD1, 0);
buzzer_init (&BZZR1, &buzzer_cfg);
buzzer_melody(&BZZR1, melody_zelda);
}
Re: buzzer player
Posted: Tue Feb 28, 2017 11:30 pm
by tfAteba
Hi all,
It seems realy cool, I want to test this one day when I will have a buzzer.
Re: buzzer player
Posted: Mon Mar 06, 2017 7:06 am
by rmozel
Hi,
With the help of the given configuration file, I managed to get it work. The problem was with my PWM configuration structure, but now it chirps perfectly
Thanks a lot.
Renan