PIC MICROCONTROLLER

paivenkatesh1975 · Jun 30, 2021

AM LOOKING FOR A PIC MICROCONTROLLER DULY PROGRAMMED WITH 45 DIFFERENT TONES (ALARMS/SIREN) FOR MY PROJECT. ALONG WITH THE REQUIRED HEX FILE AND ASSEMBLY FILES. IS IT READILY AVAILABLE
CAN ANY BODY HELP

Pommie · Jun 30, 2021

Ian Rogers · Jun 30, 2021

Why are you shouting!!!

Have a look around here----

paivenkatesh1975 · Jul 3, 2021

thanks ian
i searched on the link. but couldn't find the details as required by me.
can any one help

Ian Rogers · Jul 4, 2021

What you want may not be out there,,, You'll need to grab some code and fill in the blanks..

Nigel Goodwin · Jul 4, 2021

There's an old program for playing RTTTL ringtones, here's a version I ported to a 12F1840:

/*****************************************************************************/
/* */
/* RTTTL Ring Tone Player for Microchip PIC16F87x Microcontrollers */
/* Copyright Craig.Peacock@beyondlogic.org */
/* Version 1.0 17th August 2003 */
/* */
/*****************************************************************************/

// 12F1840 version - output RA2

#include <pic.h> // pic specific identifiers

#define _XTAL_FREQ 8000000 // Xtal speed
//__CONFIG(LVPDIS & WDTDIS & HS & UNPROTECT);
#pragma config LVP=OFF, FOSC=INTOSC, CP=OFF, WDTE=OFF, CLKOUTEN=ON

#define TONE RA2

void InitTimer(void);
void delayms(unsigned char cnt);
void PlayNote(unsigned short note, unsigned char octave, unsigned int duration);

unsigned char beep;
unsigned char preloadTMR1L;
unsigned char preloadTMR1H;
unsigned short TMR0Count;
unsigned char beat_speed;

#define AxelF

void main(void)
{
unsigned int pointer = 0;
unsigned int octave = 0;
unsigned int duration = 0;
unsigned short note = 0;
unsigned int defaultoctave = 0;
unsigned int defaultduration = 0;

#ifdef AllTheSmallThings
/* AllTheSmallThings */
const unsigned char static Melody[] = {"8e6,8e6,e6,e6,p,8e6,8f6,e6,d6,p,8d6,8e6,d6,c6,p,8e6,8e6,e6,c.6,e.6,8e6,e6,8e6,e6,8c6,c6,c6,c6,8d6,d6,8d6,d6,8d6,f6,8c6,c6,c6,c6"};
defaultoctave = 5;
defaultduration = 4;
beat_speed = 218; //160;
#endif

#ifdef AdamsFamilyTheme
/* AdamsFamilyTheme */
const unsigned char static Melody[] = {"8c6,f6,8a6,f6,8c6,b,g.6,8f6,e6,8g6,e6,8e,a,f.6,8c6,f6,8a6,f6,8c6,b,g.6,8f6,e6,8c6,d6,8e6,f.6,8c6,8d6,8e6,8f6,1p,8d6,8e6,8f#6,8g6,1p,8d6,8e6,8f#6,8g6,p,8d6,8e6,8f#6,8g6,p,c6,8e6,1f6"};
defaultoctave = 5;
defaultduration = 4;
beat_speed = 218; //160;
#endif

#ifdef AxelF
/* AxelF */
const unsigned char static Melody[] = {"32p,8g,8p,16a#.,8p,16g,16p,16g,8c6,8g,8f,8g,8p,16d.6,8p,16g,16p,16g,8d#6,8d6,8a#,8g,8d6,8g6,16g,16f,16p,16f,8d,8a#,2g,4p,16f6,8d6,8c6,8a#,4g,8a#.,16g,16p,16g,8c6,8g,8f,4g,8d.6,16g,16p,16g,8d#6,86,8a#,8g,8d6,8g6,16g,16f,16p,16f,8d,8a#,2g"};
defaultoctave = 5;
defaultduration = 4;
beat_speed = 204; //125;
#endif

#ifdef AxelF2
/* AxelF - mod to 8A#6*/
const unsigned char static Melody[] = {"32p,8g,8p,16a#.,8p,16g,16p,16g,8c6,8g,8f,8g,8p,16d.6,8p,16g,16p,16g,8d#6,8d6,8a#6,8g,8d6,8g6,16g,16f,16p,16f,8d,8a#6,2g,4p,16f6,8d6,8c6,8a#6,4g,8a#6.,16g,16p,16g,8c6,8g,8f,4g,8d.6,16g,16p,16g,8d#6,86,8a#6,8g,8d6,8g6,16g,16f,16p,16f,8d,8a#6,2g"};
defaultoctave = 5;
defaultduration = 4;
beat_speed = 204; //125;
#endif

#ifdef HappyBirthday
/* HappyBirthday */
const unsigned char static Melody[] = {"8g.,16g,a,g,c6,2b,8g.,16g,a,g,d6,2c6,8g.,16g,g6,e6,c6,b,a,8f6.,16f6,e6,c6,d6,2c6,8g.,16g,a,g,c6,2b,8g.,16g,a,g,d6,2c6,8g.,16g,g6,e6,c6,b,a,8f6.,16f6,e6,c6,d6,2c6"};
defaultoctave = 5;
defaultduration = 4;
beat_speed = 204; //125;
#endif

#ifdef Itchy
/* Itchy & Scratcy */
const unsigned char static Melody[] = {"8c,8a5,4p,8c,8a,4p,8c,a5,8c,a5,8c,8a,4p,8p,8c,8d,8e,8p,8e,8f,8g,4p,8d,8c,4d,8f,4a#,4a,2c7"};
defaultoctave = 6;
defaultduration = 8;
beat_speed = 233; //198;
#endif

#ifdef MissionImpossible
/* Mission Impossible */
const unsigned char static Melody[] = {"16d5,16d#5,16d5,16d#5,16d5,16d#5,16d5,16d5,16d#5,16e5,16f5,16f#5,16g5,8g5,4p,8g5,4p,8a#5,8p,8c6,8p,8g5,4p,8g5,4p,8f5,8p,8p,8g5,4p,4p,8a#5,8p,8c6,8p,8g5,4p,4p,8f5,8p,8f#5,8p,8a#5,8g5,1d5"};
defaultoctave = 6;
defaultduration = 4;
beat_speed = 214; //150;
#endif

// OSCCON = 0b01111010; //16MHz clock speed, int osc
OSCCON = 0b01110010; //8MHz clock speed
TRISA2 = 0; /* Make TONE an output */
ANSELA=0; /* turn off analogue inputs */

beep = 0;

InitTimer();
PEIE = 1;
GIE = 1; /* Enable General Purpose Interrupts */

do {

octave = defaultoctave; /* Set Default Octave */

if ((Melody[pointer] == '3') && (Melody[pointer+1] == '2')) {
duration = 32;
pointer += 2;
}
else if ((Melody[pointer] == '1') && (Melody[pointer+1] == '6')) {
duration = 16;
pointer += 2;
}
else if (Melody[pointer] == '8') {
duration = 8;
pointer++;
}
else if (Melody[pointer] == '4') {
duration = 4;
pointer++;
}
else if (Melody[pointer] == '2') {
duration = 2;
pointer++;
}
else if (Melody[pointer] == '1') {
duration = 1;
pointer++;
} else duration = defaultduration;

if (Melody[pointer + 1] == '#') {

/* Process Sharps */

switch (Melody[pointer]) {
case 'a' : note = 4290; //10726;
break;
case 'c' : note = 3608; //9019;
break;
case 'd' : note = 3214; //8035;
break;
case 'f' : note = 2703; //6757;
break;
case 'g' : note = 2410; //6024;
break;
}
pointer +=2;

} else {

switch (Melody[pointer]) {
case 'a' : note = 4546; //11364;
break;
case 'b' : note = 4049; //10123;
break;
case 'c' : note = 3822; //9555;
break;
case 'd' : note = 3405; //8513;
break;
case 'e' : note = 3034; //7584;
break;
case 'f' : note = 2863; //7158;
break;
case 'g' : note = 2551; //6378;
break;
case 'p' : note = 0;
break;
}
pointer++;
}

if (Melody[pointer] == '.') {
/* Duration 1.5x */
duration = duration + 128;
pointer++;
}

if (Melody[pointer] == '4') {
octave = 4;
pointer++;
} else if (Melody[pointer] == '5') {
octave = 5;
pointer++;
} else if (Melody[pointer] == '6') {
octave = 6;
pointer++;
} else if (Melody[pointer] == '7') {
octave = 7;
pointer++;
}

if (Melody[pointer] == '.') {
/* Duration 1.5x */
duration = duration + 128;
pointer++;
}

PlayNote(note, octave, duration);

} while (Melody[pointer++] == ',');

/* Wait until last note has played */
while(TMR0Count) { };
beep = 0;

/* Loop */
while(1) {};
}

void PlayNote(unsigned short note, unsigned char octave, unsigned int duration)
{

/* Process octave */
switch (octave) {
case 4 : /* Do noting */
break;
case 5 : /* %2 */
note = note >> 1;
break;
case 6 : /* %4 */
note = note >> 2;
break;
case 7 : /* %8 */
note = note >> 4;
break;
}

/* Wait until last note has played */
while(TMR0Count) { };
beep = 0;

/* Process New Note Frequency */
if (note) {
note = ~note;
preloadTMR1L = (note & 0xFF);
preloadTMR1H = ((note & 0xFF00) >> 8);
}

/* Process Note Duration */
TMR0Count = 255/(duration & 0x7F);

/* If duration is 1.5x add .5 to duration */
if (duration & 0x80) TMR0Count = (TMR0Count + (TMR0Count >> 1));

if (note) beep = 1;
}

void InitTimer(void)
{
/* Initialise Timer 0 */
OPTION_REG = 0b11010111; /* Set TMR0 to Internal CLk, 1:256 */
T0IF = 0; /* Clear TMR0 Flag, ready for use */
T0IE = 1; /* Enable Timer Overflow Interrupt */

/* Initialise Timer 1 */
T1CON = 0b00000001; /* Counter Enabled, Using Ext Pin 1:1 Prescaler */
TMR1IF = 0; /* Clear Flag */
TMR1IE = 1; /* Enable Interrupt */
TMR1GE = 0; /* Clear counting */
}

void interrupt interr(void)
{
if (T0IF) {
TMR0 = beat_speed;
if (TMR0Count) TMR0Count--;
T0IF = 0;
}
if (TMR1IF) {
if (beep) TONE = !TONE;
else TONE = 0;
TMR1H = preloadTMR1H;
TMR1L = preloadTMR1L;
TMR1IF = 0; /* Clear Flag */
}
}

I'm not very sure about the timing accuracy, as the internal osc can't be set to the same as the original - but it sounds pretty decent. It would be easy to add multiple selectable tunes, rather than the one it uses.

gophert · Jul 6, 2021

There were special chips like the SN76488N but they were difficult to set up because documentation was poor. Generally, the instructions had capacitors that were too small so the one-shot was too short and was retriggered before the sound clip finished a full frame.

Texas Instruments SN76477 - Wikipedia

en.m.wikipedia.org

You can hear the crappy sound from a setup that followed the schematic...

Holtek had (has) chips with a handful of sounds (HT2884) but not 45 of YOUR preselected sounds.
You may have some luck with an old AY-8910 or AY-8913 where you can build your own. Last option would be to use an MP3 player (or raspberry pi to play 45 sound files stored on a microSD card.

Nigel Goodwin · Jul 7, 2021

gophert said:
Last option would be to use an MP3 player (or raspberry pi to play 45 sound files stored on a microSD card.

No need for a PI or anything complex, you can get tiny MP3 modules that play from a microSD card, simply controlled by a serial interface - so a small PIC or AVR is all you need. They even have speaker outputs, and a few button inputs so they are controllable on their own as well.

paivenkatesh1975 · Jul 7, 2021

thanks nigel for your input. will tryout

Nigel Goodwin · Jul 7, 2021

These are the ones I've used:

Geekcreit® DFPlayer Mini MP3 Player Module MP3 Voice Audio Decoder Board For Supporting TF Card U-Disk IO/Serial Port/AD

Only US$11.99, buy best geekcreit® dfplayer mini mp3 player module mp3 voice audio decoder board for supporting tf card u-disk io/serial port/ad sale online store at wholesale price.

www.banggood.com

Be careful to get the correct datasheet, there's more than one version of it (old and new).

augustinetez · Jul 8, 2021

Have a look at this, it should do what you want https://www.instructables.com/Digital-Car-Horn/

Nigel Goodwin · Jul 8, 2021

augustinetez said:
Have a look at this, it should do what you want https://www.instructables.com/Digital-Car-Horn/

Cool!

paivenkatesh1975 · Jul 11, 2021

thanks augustinetez
checked the and made the unit. but the problem is i want to install a dip switch for selection of the tones.

PIC MICROCONTROLLER

paivenkatesh1975

New Member

Pommie

Well-Known Member

Ian Rogers

User Extraordinaire

paivenkatesh1975

New Member

Ian Rogers

User Extraordinaire

Nigel Goodwin

Super Moderator

gophert

Well-Known Member

Texas Instruments SN76477 - Wikipedia

Nigel Goodwin

Super Moderator

paivenkatesh1975

New Member

Nigel Goodwin

Super Moderator

Geekcreit® DFPlayer Mini MP3 Player Module MP3 Voice Audio Decoder Board For Supporting TF Card U-Disk IO/Serial Port/AD

augustinetez

Active Member

Nigel Goodwin

Super Moderator

paivenkatesh1975

New Member

Similar threads

PIC MICROCONTROLLER

New Member

Well-Known Member

User Extraordinaire

New Member

User Extraordinaire

Super Moderator

Well-Known Member

Super Moderator

New Member

Super Moderator

Active Member

Super Moderator

New Member

Similar threads

Privacy & Transparency

Privacy & Transparency