que tal gracias por tomarse la molestia de leer este post soy nuevo y estoy comenzando a programar en pic con el xc8 tengo un problema en el siguiente programa y no encuentro el error, el programa tendria que encender un led si es que la distancia leida por el sensor es menor a 10 cm anexo el codigo para que me puedan ayudar mejor
#include <xc.h>
#include<pic18f2550.h>
// PIC18F2550 Configuration Bit Settings
// 'C' source line config statements
// CONFIG1L
#pragma config PLLDIV = 1 // PLL Prescaler Selection bits (No prescale (4 MHz oscillator input drives PLL directly))
#pragma config CPUDIV = OSC1_PLL2// System Clock Postscaler Selection bits ([Primary Oscillator Src: /1][96 MHz PLL Src: /2])
#pragma config USBDIV = 1 // USB Clock Selection bit (used in Full-Speed USB mode only; UCFG:FSEN = 1) (USB clock source comes directly from the primary oscillator block with no postscale)
// CONFIG1H
#pragma config FOSC = INTOSC_XT // Oscillator Selection bits (EC oscillator, PLL enabled, CLKO function on RA6 (ECPLL))
#pragma config FCMEN = OFF // Fail-Safe Clock Monitor Enable bit (Fail-Safe Clock Monitor disabled)
#pragma config IESO = OFF // Internal/External Oscillator Switchover bit (Oscillator Switchover mode disabled)
// CONFIG2L
#pragma config PWRT = OFF // Power-up Timer Enable bit (PWRT disabled)
#pragma config BOR = OFF // Brown-out Reset Enable bits (Brown-out Reset disabled in hardware and software)
#pragma config BORV = 3 // Brown-out Reset Voltage bits (Minimum setting 2.05V)
#pragma config VREGEN = OFF // USB Voltage Regulator Enable bit (USB voltage regulator disabled)
// CONFIG2H
#pragma config WDT = OFF // Watchdog Timer Enable bit (WDT disabled (control is placed on the SWDTEN bit))
#pragma config WDTPS = 32768 // Watchdog Timer Postscale Select bits (1:32768)
// CONFIG3H
#pragma config CCP2MX = OFF // CCP2 MUX bit (CCP2 input/output is multiplexed with RB3)
#pragma config PBADEN = OFF // PORTB A/D Enable bit (PORTB<4:0> pins are configured as digital I/O on Reset)
#pragma config LPT1OSC = OFF // Low-Power Timer 1 Oscillator Enable bit (Timer1 configured for higher power operation)
#pragma config MCLRE = OFF // MCLR Pin Enable bit (RE3 input pin enabled; MCLR pin disabled)
// CONFIG4L
#pragma config STVREN = OFF // Stack Full/Underflow Reset Enable bit (Stack full/underflow will not cause Reset)
#pragma config LVP = OFF // Single-Supply ICSP Enable bit (Single-Supply ICSP disabled)
#pragma config XINST = OFF // Extended Instruction Set Enable bit (Instruction set extension and Indexed Addressing mode disabled (Legacy mode))
// CONFIG5L
#pragma config CP0 = OFF // Code Protection bit (Block 0 (000800-001FFFh) is not code-protected)
#pragma config CP1 = OFF // Code Protection bit (Block 1 (002000-003FFFh) is not code-protected)
#pragma config CP2 = OFF // Code Protection bit (Block 2 (004000-005FFFh) is not code-protected)
#pragma config CP3 = OFF // Code Protection bit (Block 3 (006000-007FFFh) is not code-protected)
// CONFIG5H
#pragma config CPB = OFF // Boot Block Code Protection bit (Boot block (000000-0007FFh) is not code-protected)
#pragma config CPD = OFF // Data EEPROM Code Protection bit (Data EEPROM is not code-protected)
// CONFIG6L
#pragma config WRT0 = OFF // Write Protection bit (Block 0 (000800-001FFFh) is not write-protected)
#pragma config WRT1 = OFF // Write Protection bit (Block 1 (002000-003FFFh) is not write-protected)
#pragma config WRT2 = OFF // Write Protection bit (Block 2 (004000-005FFFh) is not write-protected)
#pragma config WRT3 = OFF // Write Protection bit (Block 3 (006000-007FFFh) is not write-protected)
// CONFIG6H
#pragma config WRTC = OFF // Configuration Register Write Protection bit (Configuration registers (300000-3000FFh) are not write-protected)
#pragma config WRTB = OFF // Boot Block Write Protection bit (Boot block (000000-0007FFh) is not write-protected)
#pragma config WRTD = OFF // Data EEPROM Write Protection bit (Data EEPROM is not write-protected)
// CONFIG7L
#pragma config EBTR0 = OFF // Table Read Protection bit (Block 0 (000800-001FFFh) is not protected from table reads executed in other blocks)
#pragma config EBTR1 = OFF // Table Read Protection bit (Block 1 (002000-003FFFh) is not protected from table reads executed in other blocks)
#pragma config EBTR2 = OFF // Table Read Protection bit (Block 2 (004000-005FFFh) is not protected from table reads executed in other blocks)
#pragma config EBTR3 = OFF // Table Read Protection bit (Block 3 (006000-007FFFh) is not protected from table reads executed in other blocks)
// CONFIG7H
#pragma config EBTRB = OFF // Boot Block Table Read Protection bit (Boot block (000000-0007FFh) is not protected from table reads executed in other blocks)
// #pragma config statements should precede project file includes.
// Use project enums instead of #define for ON and OFF.
#define _XTAL_FREQ 8000000
#define LED_V PORTBbits.RB0
#define TRIGGER PORTBbits.RB1
#define ECHO PORTBbits.RB2
#define LED_R PORTBbits.RB4
#define ALERTA PORTBbits.RB3
int a;
long distancia;
void delay_ms(int l);
void interrupt tiempo();
void main(void)
{
TRISBbits.RB0=0;
TRISBbits.RB1=0;
TRISBbits.RB4=0;
TRISBbits.RB2=1;
TRISBbits.RB3=0;
LED_V=0;
LED_R=0;
ALERTA=0;
TRIGGER=0;
OSCCON=0b01110111;
ADCON1bits.PCFG3=1;
ADCON1bits.PCFG2=1;
ADCON1bits.PCFG1=1;
ADCON1bits.PCFG0=1;
T1CON=0b10010000;
a=0;
distancia=0;
INTCONbits.GIE=1;
INTCONbits.PEIE=1;
INTCONbits.TMR0IE=1;
INTCONbits.TMR0IF=0;
while(1)
{
//ALERTA=0;
TMR1H=0;
TMR1L=0;
TRIGGER=0;
__delay_us(2);
TRIGGER=1;
__delay_us(10);
TRIGGER=0;
T1CONbits.TMR1ON=1;
//T1CONbits.TMR1ON=1;
while(ECHO==0)
{
LED_R=1;
}
//T1CONbits.TMR1ON=1;
while(ECHO==1)
{
ALERTA=1;
}
T1CONbits.TMR1ON=0;
a = TMR1;
distancia = a*340/(2*1000000);
if(distancia < 10)
{
ALERTA=1;
// delay_ms(50);
}
/*if(a>=10)
{
LED_V=1;
delay_ms(50);
}*/
//LED_V=0;
LED_R=0;
ALERTA=0;
delay_ms(100);
}
return;
}
void interrupt tiempo()
{
if(INTCONbits.TMR0IF==1)
{
LED_V=1;
delay_ms(100);
LED_V=0;
}
INTCONbits.TMR0IF=0;
}
void delay_ms(int l){
for(int i=0;i<l;i++)
__delay_ms(1);
}
