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T0ni0
Joined: 21 Jan 2005
Posts: 11
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| 12F683 not run |
 Posted: Fri Jan 21, 2005 5:07 am |
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Hi all,
I make a pcb with a 12F675 but not available Flash & change to a 12F683, this is the scheme of this circuit.
When i utilize a 12F675 all run right but with i change to 12F683 not run nothing.
This is the code that i used
| Code: | #include <12F683.h>
#use delay(clock=8000000)
#fuses NOWDT,INTRC_IO, CPD, PROTECT, MCLR, NOPUT, NOBROWNOUT, NOIESO, NOFCMEN
#use rs232(baud=9600,parity=N,xmit=PIN_A2,bits=8)
#define TRISA1 0x38
void main()
{
float t1,t2;
long int n;
setup_counters(RTCC_INTERNAL,RTCC_DIV_32);
setup_timer_1(T1_INTERNAL|T1_DIV_BY_2);
setup_comparator( NC_NC_NC_NC ); // disable comparators
setup_adc_ports( NO_ANALOGS ); // disable analog inputs
setup_adc( ADC_OFF ); // disable ADC
setup_oscillator(OSC_8MHZ|OSC_NORMAL); // select 8MHz internal clock
disable_interrupts(GLOBAL);
set_tris_a( TRISA1 ); //
while (TRUE) {
//captura X*************************************************+
if (input(PIN_A5))
{
while (input(PIN_A5)){} // espero que baixi nivell
}
while (!input(PIN_A5)){} // espero que pugi nivell
set_timer1(0x0000); //activo timer
set_rtcc(0x00); //activo timer
while (input(PIN_A5)){}
t1=get_rtcc();
while (!input(PIN_A5)){}
t2=get_timer1();
t1=t1*16000;
t1=t1/t2;
n=t1;
printf("#POS:%lu#\r",n);
output_bit(PIN_A0, !input(PIN_A0));
delay_ms(1000);
//********************************************************* */
}
}
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Can any help me, thx for advanced |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Fri Jan 21, 2005 2:03 pm |
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Post your version of the PCM compiler. It's possible that some
of the CCS functions in your program do not work properly with
your version. Look at the top of the .LST file to see the version.
It will be a number such as 3.191 or 3.216, etc. |
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languer
Joined: 09 Jan 2004
Posts: 144
Location: USA
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| Posted: Sat Jan 22, 2005 1:59 am |
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I believe you've previously said you were using v3.190 (from Microchip forum). I gave you some code then, but after revising it I modified it as follows:
| Code: | /////////////////////////////////////////////////////////////////////////
/// Example program to blink an LED connected to GP1 and GP4
///
/// Fuses: LP,XT,INTRC,HS,NOWDT,WDT,CPD,NOCPD,PROTECT,NOPROTECT,NOMCLR
/// Fuses: MCLR,PUT,NOPUT,RC,EC,RC_IO,INTRC_IO,BROWNOUT,NOBROWNOUT
/// Fuses: BROWNOUT_NOSLP,BROWNOUT_SW,IESO,NOIESO,FCMEN,NOFCMEN
/////////////////////////////////////////////////////////////////////////
// Preprocessor
#include <12F683.h>
#device ADC=10
#fuses INTRC_IO,NOWDT,NOPUT,NOPROTECT,NOCPD,NOMCLR,NOIESO,NOFCMEN,NOBROWNOUT
#use delay(clock=8000000)
#ROM 0x7FF={0x3400}
#define GP0 PIN_A0
#define GP1 PIN_A1
#define GP2 PIN_A2
#define GP3 PIN_A3
#define GP4 PIN_A4
#define GP5 PIN_A5
#define LED1 GP1
#define LED2 GP4
void init();
// Main Program
main()
{
init();
output_low( GP0 ); // set low
output_low( GP1 ); // set low
output_low( GP2 ); // set low
output_low( GP4 ); // set low
output_low( GP5 ); // set low
while ( TRUE ) // blink LED
{
output_high( LED1 );
output_high( LED2 );
delay_ms( 500 ); // wait 500ms
output_low( LED1 );
output_low( LED2 );
delay_ms( 500 ); // wait 500ms
}
}
void init()
{
set_tris_a( 0b00001000 ); // set GP3 input, all other outputs
setup_comparator( NC_NC_NC_NC ); // disable comparators
setup_adc_ports( NO_ANALOGS ); // disable analog inputs
setup_adc( ADC_OFF ); // disable A2D
setup_oscillator( OSC_8MHZ ); // set oscillator to 8MHz
} |
The main thing I found is that CCS (v3.184) inserts the following:
| Code: | CALL 7FF
BSF 03.5
MOVWF 10 |
during device initialization. This is probably a carryover from the OSCCAL calibration of the 12F629/675. But the 12F683 does not have an OSCCAL register, the INTOSC is calibrated at the factory. So the call would store the value retrieved from 7FF into OSCTUNE. Unfortunately, the 12F683 does not have anything pre-loaded on that location (since it is not expected to use it), so the programs just gets in a loop and nothing happens. Following a 'workaround' for re-coding the retlw k instruction found on the 12F629/675 (#ROM 0x3FF={0x3480}), I applied the same principle to the 12F683 (#ROM 0x7FF={0x3400}, except an OSCTUNE value of 0x00 means to keep the factory calibration with no deviations).
Try it, it should work.
Can somebody confirm this behavior is fixed on newer versions of PCM? |
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T0ni0
Joined: 21 Jan 2005
Posts: 11
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| problem solved |
| Posted: Sat Jan 22, 2005 3:48 am |
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problem solved !!! 
THX languer for all (& all people), the problem is the version of compiler
With this version run
setup_oscillator(OSC_8MHZ|OSC_NORMAL); // select 8MHz internal clock
&
setup_oscillator(OSC_8MHZ); // select 8MHz internal clock |
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