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Jason,

I have highlighted a #DEFINE in your source code (in red characters) that
looks like it may not belong.
Is that a valid DEFINE?  I am not a "C" expert, but it looks strange to me.
I don't know if this is
The problem, but it may be 'a' problem

Regards,

Jim

-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of
Jason White
Sent: Sunday, May 02, 2010 8:39 PM
To: Microcontroller discussion list - Public.
Subject: Re: [PIC] Re: LCD Troubles ...

Fixed selected OSC problem
Fixed delay_ms , delays 1 ms

still does nothing ?

what have I done wrong this time ?

On Sun, May 2, 2010 at 8:59 PM, jim <jim@jpes.com> wrote:

> Jason,
>
> 1 NOP = Oscillator frequency / 4  ie... 4 Mhz oscillator / 4 = 1uS, so 
> 1 NOP would be 1uS in this case.
> If you're using an 8Mhz oscillator, then 1 NOP would be 500 nS.  12Mhz 
> would be 333nS, and so on.
>
> Regards,
>
> Jim
>
> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On 
> Behalf Of Jason White
> Sent: Sunday, May 02, 2010 7:51 PM
> To: Microcontroller discussion list - Public.
> Subject: Re: [PIC] Re: LCD Troubles ...
>
> How would I calculate how long 1 nop takes ?'
>
> never had problems with MCLR , I've never herd of problems like that ...
>
> --
> Jason White - Python and C++ Programmer
> --
> http://www.piclist.com PIC/SX FAQ & list archive View/change your 
> membership options at http://mailman.mit.edu/mailman/listinfo/piclist
>
> --
> http://www.piclist.com PIC/SX FAQ & list archive View/change your 
> membership options at http://mailman.mit.edu/mailman/listinfo/piclist
>



-- 
Jason White - Python and C++ Programmer

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#include <pic/pic16f690.h> // FIELD TEST


/**
 ** Processor pic16f690  @ 4 MHz
 ** SDCC Compiler=20
 **=20
 ** IO 18 pins
 **   PORTA RA0-5 : 6 pins//
 **   PORTB RB4-7 : 4 pins
 **   PORTC RC0-7 : 8 pins
 **
 ** Author Jason White
 ** Copyright (c) 2010 Jason White  <White Waters Software>
 ** whitewaterssoftwareinfo@gmail.com , w-w-soft.07x.net
 **/

// Configurations

typedef unsigned int config;

config at 0x2007 __CONFIG =3D _INTRC_OSC_NOCLKOUT// internal 32 khz OSC
								& _IESO_OFF    // no need for external OSC

                                & _PWRTE_ON    // power up timer
                                & _WDT_OFF     // chip not sleeping , no =
need

                                & _CP_OFF      // no code protection =
(the chip is not rewritable under yes)
                                & _CPD_OFF     // no data protection

                                & _MCLRE_OFF   // use external reset ?
                                & _BOR_OFF     // using batterys , allow =
low voltage
                                ;
int i=3D0;


#define DB4                 RC0
#define DB5                 RC1
#define DB6                 RC2
#define DB7                 RB4
#define RS                  RA0
#define RW                  RA1
#define EN                  RA2
#define ENABLE              EN=3D1;delay_ms(15);EN=3D0;
#define DELAY               delay_ms(15);

void delay_ms(unsigned long loop) // 4mhz , .001*1000=3D1
{
	unsigned long j=3D0;
	loop*=3D100; // 100 * 10 NOPs =3D 1000
=09
	for (j=3D0;j < loop;j++)
	{
		__asm
				nop
				nop
				nop
				nop
				nop
				nop
				nop
				nop
				nop
				nop
		__endasm;
	}
}

void cmd(unsigned char c)
{
	if(c & 0x80) DB7=3D1; else DB7=3D0;
	if(c & 0x40) DB6=3D1; else DB6=3D0;
	if(c & 0x20) DB5=3D1; else DB5=3D0;
	if(c & 0x10) DB4=3D1; else DB4=3D0;
	ENABLE;
	if(c & 0x08) DB7=3D1; else DB7=3D0;
	if(c & 0x04) DB6=3D1; else DB6=3D0;
	if(c & 0x02) DB5=3D1; else DB5=3D0;
	if(c & 0x01) DB4=3D1; else DB4=3D0;
	ENABLE;
	delay_ms(15);
}




void main()
{
=09
	PORTA =3D 0x00;
	PORTB =3D 0x00;
	PORTC =3D 0x00;
=09
	TRISA =3D 0x00; // x x x 0  0 0 0 0
	TRISB =3D 0x00; // 0 0 0 0  0 x x x
	TRISC =3D 0x00; // 0 0 0 0  0 0 1 1
=09
	ANSEL =3D 0x00;
	ANSELH=3D 0x00;
=09
	RS =3D 0;
	RW =3D 0;
	EN =3D 0;

	DELAY;
	DELAY;
	//
	// FS=3DFunction Set
	// DS=3DDisplay Set
	// EMS=3D Entry Mode Set
	//
	cmd(0x3c); // FS  4 bit mode , 2 line , 5x7
	cmd(0x0f); // DS  Display On,Cursor On, Blink On
	cmd(0x07); // EMS Increment to Right , Shift W/ Display
	cmd(0x01); // clear

	while (1)
	{=09

	}
}



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