 |
 |
| View previous topic :: View next topic |
| Author |
Message |
luna
Joined: 11 Aug 2010
Posts: 3
Location: MALAYSIA
|
| wireless communication... |
 Posted: Wed Nov 24, 2010 5:07 am |
 |
|
Hye…
I'm trying to make software UART work that received data from several sensors through Zigbee (XBee OEM RF) wireless comm. In my project, I have one master and one slave. …at the slave have two sensors that are magnetic sensor and pir sensor (both are digital sensor).
If any one of the sensor nodes is triggered, it will send an alert signal to the main controller (master). But the problem here, the system is not looping.
The problem:
After I Press Switch 1 it will display “zone 1 detect and so on”…then I try to press switch 2… but it did not show at LCD “zone 2 detect and so on”. Suppose it will clear zone 1 detect and replace with the zone 2 detect…
Plzz… I really appreciate who can help me..
Here I post my coding.
program at master
| Code: |
#include <18F4550.h>
#fuses HS,NOLVP,NOWDT,NOPROTECT
#define use_portb_kbd TRUE
#use delay(clock=20000000) // 20 MHz crystal on PCB
#use rs232(baud=9600, UART1) // hardware uart much better; uses RC6/TX and RC7/RX
#include <stdlib.h>
#include "flex_LCD1.c"
#DEFINE LED_0 PIN_D0
#DEFINE LED_1 PIN_D1
#DEFINE LED_2 PIN_D2
#DEFINE BUZZER PIN_C0
void panic_button (void); //define a function
char x;
void main()
{
/*initialize*/
output_low(BUZZER);
output_low(LED_0);
output_low(LED_1);
output_low(LED_2);
lcd_init(); // initilize lcd
printf(lcd_putc,"\f HOME SECURITY");
printf(lcd_putc,"\n WYSAS'10");
delay_ms(100);
printf("!");
while (true)
{
panic_button();
if (kbhit())
{
x = getc();
if (x=='a')
{
output_high(LED_0);
output_low(LED_1);
output_low(LED_2);
output_high(BUZZER);
printf(lcd_putc,"\f ZONE 1 DETECT");
printf(lcd_putc,"\n ENTER PASSWORD");
delay_ms(500);
}
if (x=='b')
{
printf(lcd_putc,"\f ZONE 2 DETECT");
printf(lcd_putc,"\n ENTER PASSWORD");
output_high(LED_1);
output_low(LED_0);
output_low(LED_2);
output_high(BUZZER);
delay_ms(500);
}
}
}
}
void panic_button (void) //define a function
{
if(input(pin_a1)==1)
{
printf(lcd_putc,"\fINTRUDER DETECT");
printf(lcd_putc,"\nENTER PASSWORD");
output_high(LED_0);
output_high(LED_1);
output_high(LED_2);
output_high(BUZZER);
delay_ms(500);
}
}
|
prgrm at slave
| Code: |
#include <16f628a.h>
#fuses HS,NOLVP,NOWDT,NOPROTECT
#use delay(clock=20000000) // 20 MHz crystal on PCB
#use rs232(baud=9600, UART1)
#include <stdlib.h>
#define LED_0 PIN_B4
void main()
{
set_tris_a(0b01111111);
set_tris_b(0b00000000);
while (TRUE)
{
if (input(PIN_A2)==1)
{
output_high(LED_0);
printf("b"); //sends signal b
}
if (input(PIN_A1)==1)
{
output_high(LED_0);
printf("a"); //sends signal b
}
else if(input(PIN_A2)==0|input(PIN_A1)==0)
{
output_low(LED_0);
}
}
}
|
|
|
 |
pmuldoon
Joined: 26 Sep 2003
Posts: 218
Location: Northern Indiana
|
|
| Posted: Wed Nov 24, 2010 11:19 am |
|
|
Just a quick observation:
Your UART may be hanging up on an error.
add ERRORS to your UART setups:
| Code: |
#use rs232(baud=9600, UART1, ERRORS)
|
I assume your LEDs are responding properly on the slave? |
|
|
luna
Joined: 11 Aug 2010
Posts: 3
Location: MALAYSIA
|
|
| Posted: Wed Nov 24, 2010 2:45 pm |
|
|
Thanks a lot for your response.
Finally, its working like I want. tq...
 |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
FAQ 
Search
Register
Profile 
Log in to check your private messages 
Log in
