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carlosma
Joined: 24 Mar 2004
Posts: 53
Location: Portugal
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| 16f877 to 18F452 error in the programing |
 Posted: Wed Jun 01, 2005 5:13 am |
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Hello
I do the migration of 16f877 to 18F452, because the 16F877 have no memory.
I use the PICSTART plus with the new upgrade KIT.
In the program I change the configurations bits like:
| Code: |
//16f877
#fuses HS,NOPROTECT,NOWDT,NOLVP,PUT,NOBROWNOUT
to
//18f452
#fuses HS,NOWDT,NOPROTECT,NOLVP,NOOSCSEN,NOBROWNOUT,NOSTVREN,NOPUT,NOEBTRB,NOEBTR,NOCPB,NOCPD,NOWRT,NOWRTD,NOWRTC,NOWRTB,NODEBUG
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The compile is OK - BUILD SUCCEEDED.
When I do Program with picstart plus, have ERROR in the midle of programing.
I sse all topic with the migration of 16f877 to 18F452 but I can't program the processor.
Thanks
Carlos |
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JPA
Guest
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| Posted: Wed Jun 01, 2005 8:04 am |
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| I remember I have read some strange behaviour when programming some new PICs with PICSTART+. It seems to come from PICSTART hardware. See Microchip forum for more information. |
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carlosma
Joined: 24 Mar 2004
Posts: 53
Location: Portugal
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| Posted: Thu Jun 09, 2005 3:55 am |
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Hello,
please now the programming is OK but with 18F452 the program dont work
I see all configuration bits possible.
Parts of my program:
| Code: |
#include <18F452.h>
#include <math.h>
#include <stdlib.h>
#fuses HS,NOPROTECT,NOWDT,NOLVP,PUT,NOBROWNOUT
#use delay(clock=4000000)
#include <pcf8570.c>
#include <LCD.C>
#include <kbd.C>
//...
//
#int_timer0
timer0_isr()
{
clock-=256;
if(clock<256)
{
clock+=CLOCK_VAL;
tick=1;
seconds++;
}
}
#int_timer1
timer1_isr()
{
set_timer1(65200);
// Decrement any timers that are running.
if(gc_buttons_timer)
gc_buttons_timer--;
if(entradas_zona_timer)
entradas_zona_timer--;
}
void init_chip()
{
lcd_init();
kbd_init();
setup_adc_ports(NO_ANALOGS);
setup_timer_0(RTCC_INTERNAL | RTCC_DIV_8); ///eu
setup_timer_1 (T1_INTERNAL);
set_timer1(65200);
enable_interrupts(int_timer0); // Enable timer0 interrupt
enable_interrupts(int_timer1);
enable_interrupts(GLOBAL); // Enable global interrupts
calculo_angulo();
}
//...
//
main()
{
gc_buttons_timer = BUTTONS_TIMER_TICKS;
init_chip();
while(1)
{
if (tick)
{
tick=0;
update_clock();
led2 = !led2;
output_bit (pin_e1,led2);
}
//...
//
check_buttons();
entradas_zona(); // check inputs
math_calcul(); // math calculation use math complex- sin(), cos() and tang();
motor_output();
//...
}
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helps me in the migration of 16F877 to 18F452 |
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Ttelmah
Guest
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| Posted: Mon Jun 13, 2005 9:56 am |
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You need to go through all your include files (your ones, not the 'system' ones), looking for any #byte, or #bit definitions. These will need to be changed to the required addresses for the latter chips (very different).
I'd suspect the routine you refer to as 'check inputs', as a possible starting place.
Best Wishes |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Mon Jun 13, 2005 11:37 am |
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When you move to a new PIC, don't start with a complicated program.
Start with a simple program that just blinks a LED, or displays "Hello
World". Get that program running OK. Then try your big program.
Example:
| Code: | #include <18F452.h>
#fuses XT, NOWDT,NOPROTECT, PUT, BROWNOUT, NOLVP
#use delay(clock = 4000000)
//========================================
void main()
{
while(1)
{
output_high(PIN_B0);
delay_ms(500);
output_low(PIN_B0);
delay_ms(500);
}
} |
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