buenas amigos, tengo un problema parecido, estoi usando el pic18f2525, la cuestion es que realice un programa y en proteus corre perfecto, muestra la lcd y todo bien, (la lcd esta bien conectada, no es problema de conccion de lcd), el problema se presenta q al pasar el programa al pic simplemente no responde a nada, realice otro programa q solo encienda y apague un led para tratar de verificar en que parte del programa se queda la corrida, segun lo q hice se queda en alguna parte de la rutina de lcd que esta en la libreria de CCS, esto lo deduje porque al comentar en comando //lcd_init() el programa corre perfecto, es decir enciende y apaga el led sin problemas, al descomentarlo no hace absolutamente nada, aca le dejo el codigo de programa que uso para probar en q parte se queda el programa.
#include <18F2525.h>
#device adc=10
#FUSES NOWDT //No Watch Dog Timer
#FUSES WDT128 //Watch Dog Timer uses 1:128 Postscale
#FUSES INTRC //Internal RC Osc
#FUSES NOPROTECT //Code not protected from reading
#FUSES IESO //Internal External Switch Over mode enabled
#FUSES NOBROWNOUT //No brownout reset
#FUSES BORV20 //Brownout reset at 2.0V
#FUSES NOPUT //No Power Up Timer
#FUSES NOCPD //No EE protection
#FUSES NOSTVREN //Stack full/underflow will not cause reset
#FUSES NODEBUG //No Debug mode for ICD
#FUSES LVP //Low Voltage Programming on B3(PIC16) or B5(PIC18)
#FUSES NOWRT //Program memory not write protected
#FUSES NOWRTD //Data EEPROM not write protected
#FUSES NOEBTR //Memory not protected from table reads
#FUSES NOCPB //No Boot Block code protection
#FUSES NOEBTRB //Boot block not protected from table reads
#FUSES NOWRTC //configuration not registers write protected
#FUSES NOWRTB //Boot block not write protected
#FUSES NOFCMEN //Fail-safe clock monitor disabled
#FUSES NOXINST //Extended set extension and Indexed Addressing mode disabled (Legacy mode)
#FUSES PBADEN //PORTB pins are configured as analog input channels on RESET
#FUSES LPT1OSC //Timer1 configured for low-power operation
#FUSES MCLR //Master Clear pin enabled
#use delay(clock=4000000)
//#define LCD_DATA_PORT getenv("SFR:PORTB")
#define LCD_ENABLE_PIN PIN_B0
#define LCD_RS_PIN PIN_B1
#define LCD_RW_PIN PIN_B2
#define LCD_TYPE 2
#define LCD_DATA4 PIN_B4
#define LCD_DATA5 PIN_B5
#define LCD_DATA6 PIN_B6
#define LCD_DATA7 PIN_B7
#include <lcd.c>
int seguir;
void main()
{
lcd_init();
seguir=0;
setup_adc_ports(AN0_TO_AN1|VSS_VDD);
setup_adc(ADC_CLOCK_INTERNAL|ADC_TAD_MUL_2);
setup_spi(SPI_SS_DISABLED);
setup_wdt(WDT_OFF);
setup_timer_0(RTCC_INTERNAL);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DISABLED,0,1);
setup_timer_3(T3_DISABLED|T3_DIV_BY_1);
setup_comparator(NC_NC_NC_NC);
setup_vref(FALSE);
setup_oscillator(OSC_4MHZ|OSC_INTRC|OSC_PLL_OFF);
set_tris_a(0x03);
do{
output_low(pin_a2);
delay_ms(300);
output_high(pin_a2);
delay_ms(300);
}
while (seguir==0);
}
Y la rutina de la lcd de la libreria es esta (es la que trae CCS) que al activar lcd_init() no corre el programa
typedef struct
{ // This structure is overlayed
BOOLEAN enable; // on to an I/O port to gain
BOOLEAN rs; // access to the LCD pins.
BOOLEAN rw; // The bits are allocated from
BOOLEAN unused; // low order up. ENABLE will
int data : 4; // be LSB pin of that port.
#if defined(__PCD__) // The port used will be LCD_DATA_PORT.
int reserved: 8;
#endif
} LCD_PIN_MAP;
#if defined(__PCB__)
// these definitions only need to be modified for baseline PICs.
// all other PICs use LCD_PIN_MAP or individual LCD_xxx pin definitions.
/* EN, RS, RW, UNUSED, DATA */
const LCD_PIN_MAP LCD_OUTPUT_MAP = {0, 0, 0, 0, 0};
const LCD_PIN_MAP LCD_INPUT_MAP = {0, 0, 0, 0, 0xF};
#endif
////////////////////// END CONFIGURATION ///////////////////////////////////
#ifndef LCD_ENABLE_PIN
#define lcd_output_enable(x) lcdlat.enable=x
#define lcd_enable_tris() lcdtris.enable=0
#else
#define lcd_output_enable(x) output_bit(LCD_ENABLE_PIN, x)
#define lcd_enable_tris() output_drive(LCD_ENABLE_PIN)
#endif
#ifndef LCD_RS_PIN
#define lcd_output_rs(x) lcdlat.rs=x
#define lcd_rs_tris() lcdtris.rs=0
#else
#define lcd_output_rs(x) output_bit(LCD_RS_PIN, x)
#define lcd_rs_tris() output_drive(LCD_RS_PIN)
#endif
#ifndef LCD_RW_PIN
#define lcd_output_rw(x) lcdlat.rw=x
#define lcd_rw_tris() lcdtris.rw=0
#else
#define lcd_output_rw(x) output_bit(LCD_RW_PIN, x)
#define lcd_rw_tris() output_drive(LCD_RW_PIN)
#endif
#ifndef LCD_DATA_PORT
#if defined(__PCB__)
#define LCD_DATA_PORT 0x06 //portb
#define set_tris_lcd(x) set_tris_b(x)
#elif defined(__PCM__)
#define LCD_DATA_PORT getenv("SFR:PORTB") //portd
#elif defined(__PCH__)
#define LCD_DATA_PORT getenv("SFR:PORTB") //portd
#elif defined(__PCD__)
#define LCD_DATA_PORT getenv("SFR:PORTB") //portd
#endif
#endif
#if defined(__PCB__)
LCD_PIN_MAP lcd, lcdlat;
#byte lcd = LCD_DATA_PORT
#byte lcdlat = LCD_DATA_PORT
#elif defined(__PCM__)
LCD_PIN_MAP lcd, lcdlat, lcdtris;
#byte lcd = LCD_DATA_PORT
#byte lcdlat = LCD_DATA_PORT
#byte lcdtris = LCD_DATA_PORT+0x80
#elif defined(__PCH__)
LCD_PIN_MAP lcd, lcdlat, lcdtris;
#byte lcd = LCD_DATA_PORT
#byte lcdlat = LCD_DATA_PORT+9
#byte lcdtris = LCD_DATA_PORT+0x12
#elif defined(__PCD__)
LCD_PIN_MAP lcd, lcdlat, lcdtris;
#word lcd = LCD_DATA_PORT
#word lcdlat = LCD_DATA_PORT+2
#word lcdtris = LCD_DATA_PORT-0x02
#endif
#ifndef LCD_TYPE
#define LCD_TYPE 2 // 0=5x7, 1=5x10, 2=2 lines
#endif
#ifndef LCD_LINE_TWO
#define LCD_LINE_TWO 0x40 // LCD RAM address for the second line
#endif
BYTE const LCD_INIT_STRING[4] = {0x20 | (lcd_type << 2), 0xc, 1, 6};
// These bytes need to be sent to the LCD
// to start it up.
// original version of this library incorrectly labeled LCD_DATA0 as LCD_DATA4,
// LCD_DATA1 as LCD_DATA5, and so on. this block of code makes the driver
// compatible with any code written for the original library
#if (defined(LCD_DATA0) && defined(LCD_DATA1) && defined(LCD_DATA2) && defined(LCD_DATA3) && !defined(LCD_DATA4) && !defined(LCD_DATA5) && !defined(LCD_DATA6) && !defined(LCD_DATA7))
#define LCD_DATA4 LCD_DATA0
#define LCD_DATA5 LCD_DATA1
#define LCD_DATA6 LCD_DATA2
#define LCD_DATA7 LCD_DATA3
#endif
BYTE lcd_read_nibble(void);
BYTE lcd_read_byte(void)
{
BYTE low,high;
#if defined(__PCB__)
set_tris_lcd(LCD_INPUT_MAP);
#else
#if (defined(LCD_DATA4) && defined(LCD_DATA5) && defined(LCD_DATA6) && defined(LCD_DATA7))
output_float(LCD_DATA4);
output_float(LCD_DATA5);
output_float(LCD_DATA6);
output_float(LCD_DATA7);
#else
lcdtris.data = 0xF;
#endif
#endif
lcd_output_rw(1);
delay_cycles(1);
lcd_output_enable(1);
delay_cycles(1);
high = lcd_read_nibble();
lcd_output_enable(0);
delay_cycles(1);
lcd_output_enable(1);
delay_us(1);
low = lcd_read_nibble();
lcd_output_enable(0);
#if defined(__PCB__)
set_tris_lcd(LCD_INPUT_MAP);
#else
#if (defined(LCD_DATA4) && defined(LCD_DATA5) && defined(LCD_DATA6) && defined(LCD_DATA7))
output_drive(LCD_DATA4);
output_drive(LCD_DATA5);
output_drive(LCD_DATA6);
output_drive(LCD_DATA7);
#else
lcdtris.data = 0x0;
#endif
#endif
return( (high<<4) | low);
}
BYTE lcd_read_nibble(void)
{
#if (defined(LCD_DATA4) && defined(LCD_DATA5) && defined(LCD_DATA6) && defined(LCD_DATA7))
BYTE n = 0x00;
/* Read the data port */
n |= input(LCD_DATA4);
n |= input(LCD_DATA5) << 1;
n |= input(LCD_DATA6) << 2;
n |= input(LCD_DATA7) << 3;
return(n);
#else
return(lcd.data);
#endif
}
void lcd_send_nibble(BYTE n)
{
#if (defined(LCD_DATA4) && defined(LCD_DATA5) && defined(LCD_DATA6) && defined(LCD_DATA7))
/* Write to the data port */
output_bit(LCD_DATA4, BIT_TEST(n, 0));
output_bit(LCD_DATA5, BIT_TEST(n, 1));
output_bit(LCD_DATA6, BIT_TEST(n, 2));
output_bit(LCD_DATA7, BIT_TEST(n, 3));
#else
lcdlat.data = n;
#endif
delay_cycles(1);
lcd_output_enable(1);
delay_us(2);
lcd_output_enable(0);
}
void lcd_send_byte(BYTE address, BYTE n)
{
lcd_output_rs(0);
while ( bit_test(lcd_read_byte(),7) ) ;
lcd_output_rs(address);
delay_cycles(1);
lcd_output_rw(0);
delay_cycles(1);
lcd_output_enable(0);
lcd_send_nibble(n >> 4);
lcd_send_nibble(n & 0xf);
}
void lcd_init(void)
{
BYTE i;
#if defined(__PCB__)
set_tris_lcd(LCD_OUTPUT_MAP);
#else
#if (defined(LCD_DATA4) && defined(LCD_DATA5) && defined(LCD_DATA6) && defined(LCD_DATA7))
output_drive(LCD_DATA4);
output_drive(LCD_DATA5);
output_drive(LCD_DATA6);
output_drive(LCD_DATA7);
#else
lcdtris.data = 0x0;
#endif
lcd_enable_tris();
lcd_rs_tris();
lcd_rw_tris();
#endif
lcd_output_rs(0);
lcd_output_rw(0);
lcd_output_enable(0);
delay_ms(15);
for(i=1;i<=3;++i)
{
lcd_send_nibble(3);
delay_ms(5);
}
lcd_send_nibble(2);
for(i=0;i<=3;++i)
lcd_send_byte(0,LCD_INIT_STRING
);
}
void lcd_gotoxy(BYTE x, BYTE y)
{
BYTE address;
if(y!=1)
address=LCD_LINE_TWO;
else
address=0;
address+=x-1;
lcd_send_byte(0,0x80|address);
}
void lcd_putc(char c)
{
switch (c)
{
case '\f' : lcd_send_byte(0,1);
delay_ms(2);
break;
case '\n' : lcd_gotoxy(1,2); break;
case '\b' : lcd_send_byte(0,0x10); break;
default : lcd_send_byte(1,c); break;
}
}
char lcd_getc(BYTE x, BYTE y)
{
char value;
lcd_gotoxy(x,y);
while ( bit_test(lcd_read_byte(),7) ); // wait until busy flag is low
lcd_output_rs(1);
value = lcd_read_byte();
lcd_output_rs(0);
return(value);
}
de ante mano gracias a todos, y espero q me puedan ayudar 
