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karlghosn
Joined: 19 Mar 2014
Posts: 1
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| Micro project |
 Posted: Tue Apr 01, 2014 11:37 pm |
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Our project is to design and implement a power monitor aiming to display elapsed time and current frequency of either IDL or Generator. An alarm should be set whenever the frequency is off by +/- 2Hz. The system should provide time logging information on a daily basis. An external RTC may be used.
I'm using 6 buttons so that the user can reset the time and date of the LCD :
RB0: Day, RB1: Month, RB2: Year, RB3: Seconds, RB4: Minutes, RB5: Hour.
This is our code :
| Code: |
#include "Project.h"
#include "LCD2x16.h"
///////////////////////////////////////////////////////////////////////////////
BOOLEAN Ext_Int_detect = FALSE;
#int_EXT //interrupt service routine for INT0
void EXT_isr(void)
{
Ext_Int_detect = TRUE;
}
///////////////////////////////////////////////////////////////////////////////
unsigned int16 old_CCP1=0, CCP1_diff;
#int_CCP1 //interrupt service routine for Capture 1
void CCP1_isr(void)
{
CCP1_diff = CCP_1 - old_CCP1;
old_CCP1 = CCP_1; //prepare for next capture
}
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
void main()
{
int8 day=1;//same as: byte counter;
int8 month=1;
int8 year=2000;
int8 hour=0;
int8 min=0;
int8 sec=0;
float freq;
setup_timer_3(T3_DISABLED | T3_DIV_BY_1);
setup_timer_1(T1_INTERNAL | T1_DIV_BY_1 ); //prepare timer1 for CCP1
setup_ccp1(CCP_CAPTURE_FE); //set up input capture for frequency detect
ext_int_edge(H_TO_L);
enable_interrupts(INT_EXT);
enable_interrupts(INT_CCP1); //enable interrupt for input capture
enable_interrupts(GLOBAL);
set_tris_c(0xBF);
delay_ms(500); //wait a bit
lcd_init(); //initialize 16x2 LCD
printf(lcd_putc, "Hello World- LCD!\nMicro Demo"); // print on LCD
printf("\fHello World- UART\n\r"); //print over UART (terminal)
delay_ms(1000); //wait 1 sec
lcd_putc('\f'); //clear LCD
while(TRUE)
{
if (!input(PIN_B0))
{
delay_ms(20); //debounce delay
printf("\n\rPB3 pressed!");
while (!input(PIN_B0));
delay_ms(20); //debounce delay
printf("\n\rPB3 released!");
day++;
lcd_gotoxy(1,1);
printf(lcd_putc, "C: %03u", day);
}
if (!input(PIN_B1))
{
delay_ms(20); //debounce delay
printf("\n\rPB3 pressed!");
while (!input(PIN_B1));
delay_ms(20); //debounce delay
printf("\n\rPB3 released!");
month++;
lcd_gotoxy(1,1);
printf(lcd_putc, "C: %03u", month);
}
if (!input(PIN_B2))
{
delay_ms(20); //debounce delay
printf("\n\rPB3 pressed!");
while (!input(PIN_B2));
delay_ms(20); //debounce delay
printf("\n\rPB3 released!");
year++;
lcd_gotoxy(1,1);
printf(lcd_putc, "C: %03u", year);
}
if (!input(PIN_B3))
{
delay_ms(20); //debounce delay
printf("\n\rPB3 pressed!");
while (!input(PIN_B3));
delay_ms(20); //debounce delay
printf("\n\rPB3 released!");
sec++;
lcd_gotoxy(1,1);
printf(lcd_putc, "C: %03u", sec);
}
if (!input(PIN_B4))
{
delay_ms(20); //debounce delay
printf("\n\rPB3 pressed!");
while (!input(PIN_B4));
delay_ms(20); //debounce delay
printf("\n\rPB3 released!");
min++;
lcd_gotoxy(1,1);
printf(lcd_putc, "C: %03u", min);
}
if (!input(PIN_B5))
{
delay_ms(20); //debounce delay
printf("\n\rPB3 pressed!");
while (!input(PIN_B5));
delay_ms(20); //debounce delay
printf("\n\rPB3 released!");
hour++;
lcd_gotoxy(1,1);
printf(lcd_putc, "C: %03u", hour);
}
//display frequency:
freq = 1/((float)CCP1_diff/1000000);
lcd_gotoxy(8,1);
printf(lcd_putc, "F=%.2f", freq);
delay_ms(100); //main loop delay (optional)
}
} |
When we run the simulation in PROTEUS, the simulation doesn't work and says:
Processor is in reset.
We are using a pic18f4520.
What is the error ? And what can we do to fix it ? |
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temtronic
Joined: 01 Jul 2010
Posts: 9246
Location: Greensville,Ontario
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| Posted: Wed Apr 02, 2014 5:45 am |
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As a first time poster you should know that we are NOT a Proteus forum. Please read PIC101.Not too many here actually use it as it is full of bugs, errors and faulty DRCs.
That being said...consider starting off small!
Cut code for the simple '1hz flashing LED' program to confirm the PIC hardware/setup runs correctly, then the "Hello LCD" program.Good news is you've included the delay_ms(500) before the LCD_init()! This will allow the LCD to properly configure itself before you access it.
Divide the project into small sections, RTC, Buttons,LCD, Logging,etc.. Work on one section at a time,test, confirm it works THEN do the next section.
Be aware that we an help you with code running on REAL PICs only ! Proteus is a simulator well known to NOT correctly emulate PICs so we have NO idea how to fix Proteus internal code.
hth
jay |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19552
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| Posted: Wed Apr 02, 2014 7:40 am |
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Some comments that might apply (but you don't show enough for us to know...).
You are using the same pin to trigger an interrupt, as you are using for button0.
Fuses. The default is for PORTB, to wake up set as analog inputs, unless you have the NOPBADEN fuse. You don't have any code to disable this behaviour. |
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ckielstra
Joined: 18 Mar 2004
Posts: 3680
Location: The Netherlands
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| Posted: Thu Apr 03, 2014 10:50 am |
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| What is the maximum value that fits in a 8-bit integer? |
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