configuration d'un timer ?
salut tout le monde , j'ai fait un projet concernant le vidange d'un bidant mais je sais pas comment configurer correctement le timer pour qu'il puisse calculer la distance entre le capteur et la surface d'eau voici mon code :
Code:
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| /* Main.c file generated by New Project wizard
*
* Created: mer. févr. 17 2017
* Processor: PIC16F887
* Compiler: MPLAB XC8
*/
#include <xc.h>
#define _XTAL_FREQ 4000000
#define pushed 0
#define released 1
#define empty 0
#define not_empty 1
#define ON 1
#define OFF 0
#define echo PORTCbits.RC7
#define trigger PORTCbits.RC6
#define button PORTBbits.RB0
#define sensor PORTBbits.RB1
#define motor PORTBbits.RB2
#define LED_ET PORTDbits.RD0
#define LED_MP PORTDbits.RD1
unsigned char last_button, pushed_button;
void main(void)
{
OSCCON&=0b11101110;// use internal oscillator
OSCCON|=0b01100000;// set it to 4 Mhz
TRISD=0x00;// configure PORTD as output
PORTD=0x00;// initialize PORTD to 0x00 :All LEDs are OFF
ANSELH=0x00;
OPTION_REGbits.nRBPU=0;
WPUBbits.WPUB1=1;
TRISCbits.TRISC7=1;
TRISCbits.TRISC6=0;
TRISBbits.TRISB0=1;
TRISBbits.TRISB1=1;
TRISBbits.TRISB2=0;
motor=OFF;
LED_ET=OFF;
LED_MP=OFF;
last_button=button;
pushed_button=0;
T1CON = 0x01;
float a ;
// Write your code here
while (1)
{
if((last_button==released) && (button==pushed)) pushed_button=1;
last_button=button;
if (sensor==empty)LED_ET=ON;
else LED_ET=OFF;
if (pushed_button)
{
pushed_button=0;
if(sensor==empty)
{ while(sensor==empty)
{
LED_ET=~LED_ET;
__delay_ms(500);
}
}
else
{
LED_MP=ON;
motor=ON;
while(sensor==not_empty);
LED_MP=OFF;
motor=OFF;
}
}
trigger=1; // trigger high
__delay_us(10);
trigger=0; //trigger low
__delay_ms(50);
TMR1H = 0;
TMR1L = 0;
while (!echo); //Waiting for Echo
TMR1ON=1;
while(echo); //Waiting for Echo goes LOW
TMR1ON=0;
a = (TMR1L | (TMR1H<<8));
a = a/58.82;
}
} |
