Print Page - Clock, hours, minutes, seconds

Title: Clock, hours, minutes, seconds
Post by: Leonardo on November 11, 2008, 04:38:08 16:38

Hello friendly,

I want to do a clock with pic16f628 or some other pic that marks the hours, minutes and seconds. ¿Somebody of the forum has some example realized in picbasic pro?.

Thanks for its aid.

Title: Re: Clock, hours, minutes, seconds
Post by: bbarney on November 11, 2008, 05:21:35 17:21

Do your own searching,there are ton's of examples here and all over the internet if you just tried searching!
but here's a good one to start your lazy ass ;)

Title: Re: Clock, hours, minutes, seconds
Post by: fernandodiaz on November 12, 2008, 03:53:01 03:53

'here some sample clock timer0 proton plus xtal 4mhz output LCD remplace all dims Dim ticks as byte for var
' and some directives lcd remplace print for lcdout $fe read manual pbp

Code:

'DECLARE WATCHDOG = off ' xtal 4mhz

      DEVICE = 16F877

       'device = 16f874a

        XTAL = 4

		LCD_DTPIN = PORTb.4        	

		LCD_RSPIN = PORTb.2

		LCD_ENPIN = PORTb.3

		LCD_INTERFACE = 4	' 4-bit Interface

		LCD_LINES = 2

		LCD_TYPE = 0



		SCL_PIN	= PORTe.0

        SDA_PIN	= PORTe.1

		SERIAL_BAUD = 9600	

		RSOUT_PIN = PORTb.0

		RSOUT_MODE = INVERT

		RSOUT_PACE = 1

	 '   dim contador as dword           

		Dim MINUTO  as     byte    		' Define MINUTO variable

		Dim SEGUNDO as     byte    		' Define SEGUNDO variable

		Dim ticks   as     byte    		' Define pieces of seconds variable

		Dim update  as     byte    		' Define variable to indicate update of LCD

		Dim i       as     byte    		' Debounce loop variable



        Delayms 100       				' Wait for LCD to startup

             				            ' Set initial time to 00:00:00

        MINUTO = 0

        SEGUNDO = 0

        ticks = 0

        update = 1      				' Force first display



        OPTION_REG = %1010111       	' Set TMR0 configuration and enable PORTB pullu

        INTCON = $A0            		' Enable TMR0 interrupts

            Cls        

        

        On Interrupt Goto Tickint		'_________________Interrupcion___________________________  



 

'____________________________

mainloop:

 

    If update = 1 Then

        	 						   ' Clear screen

		Print AT 1,1,    dec2 MINUTO, ":", dec2 SEGUNDO 

 	   update = 0      			' Screen updated           

   	Endif





Goto mainloop   				' Do it all forever

       

 '______________________________    

        Disable         				' Disable interrupts during interrupt handler



Tickint: 

tmr0 = 12 ' .0625s * 16 = 1 seg   36 microseg de error por tick o 576 microseg x seg

   

 	ticks = ticks + 1      		    ' Count pieces of seconds

        If ticks < 16 Then tiexit       ' 16 ticks per SEGUNDO (.0625 per tick)





        ticks = 0

        SEGUNDO = SEGUNDO + 1

        If SEGUNDO >= 60 Then

           SEGUNDO = 0

			MINUTO = MINUTO + 1

			If MINUTO >= 60 Then

			   MINUTO = 0             

    		Endif

        Endif



        update = 1      				' Poner en lcd  update LCD



Tiexit: INTCON.2 = 0    				' Borrar bandera timer interrupt flag

        Resume

best regards

Title: Re: Clock, hours, minutes, seconds
Post by: Shinta on November 15, 2008, 11:11:59 23:11

Why you don't try the ds1307 ic commanded via I2C bus with 16f628. is too much easy an exactly.

Title: Re: Clock, hours, minutes, seconds
Post by: Biggles on November 16, 2008, 08:57:37 20:57

Many clocks on Google search for PIC Basic Pro, but here is a nice one I have used myself:

3 Button adjustment of a DS1307 RTC

"The circuit uses a PIC16F84 and a standard 16*2 LCD.
.. tested the program on the following Pic chips, 16F84, 16F628(7), 18F1320(1220) and 18F452(252). "

http://anonym.to/?http://wiki.picbasic.org/index.php?n=ThreeButtonadjustmentofaDS1307RTC.RTC (http://anonym.to/?http://wiki.picbasic.org/index.php?n=ThreeButtonadjustmentofaDS1307RTC.RTC)

Also easy to modify to SPI bus. I used it on a clock with good results using DS1305.

For clock only, a RTC is a little overkill. My application had a time display function when in standby, so I had to use a RTC. Very easy!

Sonsivri

Electronics => Pic Basic Languages => Topic started by: Leonardo on November 11, 2008, 04:38:08 16:38