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baris_akinci
Joined: 10 Mar 2016
Posts: 17
Location: Ankara
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| timer1 problem |
 Posted: Thu Mar 24, 2016 2:38 am |
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Hello, I have been trying to generate SPWM by using Timer1 for two output pins of 16f628a. Actually, I find and optimize this code and test it on real board. It worked well for me.
| Code: | #include <16f628a.h>
#FUSES NOWDT, INTRC_IO, NOPROTECT, NOBROWNOUT, NOMCLR, NOCPD
#use delay(clock=4000000)
unsigned int8 pwm_valA=0,pwm_valB=0,pwm_dutyA=0,pwm_dutyB=0;
#int_timer1
void timer1_kesmesi()
{
set_timer1(65500);
if(++pwm_valA<pwm_dutyA) output_high(pin_a0);
else output_low(pin_a0);
if(++pwm_valB<pwm_dutyB) output_high(pin_a1);
else output_low(pin_a1);
}
void main()
{
setup_comparator(NC_NC_NC_NC);
set_tris_a(0X00);
set_timer1(15035);
setup_timer_1(T1_INTERNAL|T1_DIV_BY_1);
enable_interrupts(int_timer1);
enable_interrupts(GLOBAL);
while(TRUE)
{
pwm_dutyA=50;
pwm_dutyB=50;
}
}
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But if I move this code block into another project as a part of another simulation, the speed of outputs (gradually ON/OFF situation) goes faster, and I can not control it!! Internal OSC and OSC speed are same, prescaler is same, outputs are same!
Please let me know why this happens and how can I control it. Thanks in advance. |
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temtronic
Joined: 01 Jul 2010
Posts: 9226
Location: Greensville,Ontario
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| Posted: Thu Mar 24, 2016 5:33 am |
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re:
if I move this code block into another project as a part of another simulation
Simulation is NOT the same as Real World testing !
First NO 'simulator' actually works 100% properly....
2nd You don't show the 'new' code, only what did work, so we can't 'guess' what is different about version #2.
You need to post your 2nd program for any help.
Jay |
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baris_akinci
Joined: 10 Mar 2016
Posts: 17
Location: Ankara
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| timer1 problem |
| Posted: Thu Mar 24, 2016 5:42 am |
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You are right Jay, sorry. here is the second code..
| Code: | #include <16F628A.h>
#FUSES NOWDT,NOPROTECT, NOBROWNOUT, NOLVP,NOCPD
#FUSES INTRC_IO
#use fast_io(a)
#use delay(internal=4000000)
#use rs232(baud=2400,xmit=PIN_B2,rcv=PIN_B1,ERRORS)
#priority rda,timer1
#define LED1 pin_a0
#define LED2 pin_a1
#define LED3 pin_a2
#define LED4 pin_a3
char c[20];
char kapat[10];
int counter=1;
int durum=0;
int index = 0;
unsigned int inc=0;
unsigned int8 pwm_valA=0,pwm_valB=0,pwm_dutyA=0,pwm_dutyB=0;
#int_rda
void RDA_isr(void)
{
// rda sub-program, its about the sychronization
}
#int_timer1
void timer1_kesmesi()
{
set_timer1(65500);
output_low(LED1); output_low(LED3);
if(++pwm_valA<pwm_dutyA)output_high(LED2);
else output_low(LED2);
if(++pwm_valB<pwm_dutyB)output_high(LED4);
else output_low(LED4);
}
void sim1() {
int i=0;
output_high(LED1);output_high(LED2); for(i=0;i<70;i++) {delay_ms(1); }
output_low(LED1);output_low(LED2); for(i=0;i<70;i++) {delay_ms(1); }
output_high(LED1);output_high(LED2); for(i=0;i<70;i++) {delay_ms(1); }
output_low(LED1);output_low(LED2); for(i=0;i<70;i++) {delay_ms(1); }
output_high(LED1);output_high(LED2); for(i=0;i<70;i++) {delay_ms(1); }
output_low(LED1);output_low(LED2); for(i=0;i<200;i++) {delay_ms(1); }
output_high(LED3);output_high(LED4); for(i=0;i<70;i++) {delay_ms(1); }
output_low(LED3);output_low(LED4); for(i=0;i<70;i++) {delay_ms(1); }
output_high(LED3);output_high(LED4); for(i=0;i<70;i++) {delay_ms(1); }
output_low(LED3);output_low(LED4); for(i=0;i<70;i++) {delay_ms(1);}
output_high(LED3);output_high(LED4); for(i=0;i<70;i++) {delay_ms(1); }
output_low(LED3);output_low(LED4); for(i=0;i<200;i++) {delay_ms(1); }
}
void sim2() {
int b=0;
output_high(LED1); for(b=0;b<50;b++){delay_ms(1); }
output_low(LED1); for(b=0;b<50;b++){delay_ms(1); }
output_high(LED2); for(b=0;b<50;b++){delay_ms(1); }
output_low(LED2);for(b=0;b<50;b++){delay_ms(1); }
output_high(LED3); for(b=0;b<50;b++){delay_ms(1); }
output_low(LED3);for(b=0;b<50;b++){delay_ms(1); }
output_high(LED4); for(b=0;b<50;b++){delay_ms(1); }
output_low(LED4);for(b=0;b<50;b++){delay_ms(1); }
for(b=0;b<150;b++){delay_ms(1); }
output_high(LED4); for(b=0;b<50;b++){delay_ms(1); }
output_low(LED4);for(b=0;b<50;b++){delay_ms(1); }
output_high(LED3); for(b=0;b<50;b++){delay_ms(1); }
output_low(LED3);for(b=0;b<50;b++){delay_ms(1); }
output_high(LED2); for(b=0;b<50;b++){delay_ms(1); }
output_low(LED2);for(b=0;b<50;b++){delay_ms(1); }
output_high(LED1); for(b=0;b<50;b++){delay_ms(1); }
output_low(LED1);for(b=0;b<50;b++){delay_ms(1); }
}
void sim3() {
int h=0;
for(h=0;h<250;h++){delay_ms(1); }
output_toggle(LED1);output_toggle(LED2);output_toggle(LED3);output_toggle(LED4);
for(h=0;h<250;h++){delay_ms(1); }
output_toggle(LED1);output_toggle(LED2);output_toggle(LED3);output_toggle(LED4);
}
void sim4() {
int a=0;
output_high(LED1); output_high(LED2);output_low(LED3);output_low(LED4);
for(a=0;a<250;a++){delay_ms(1); }
output_low(LED1); output_low(LED2);output_high(LED3);output_high(LED4);
for(a=0;a<250;a++){delay_ms(1); }
}
void sim5() {
int d=0;
output_high(LED1); output_high(LED3);output_low(LED2);output_low(LED4);
for(d=0;d<250;d++){delay_ms(1); }
output_low(LED1); output_low(LED3);output_high(LED2);output_high(LED4);
for(d=0;d<250;d++){delay_ms(1); }
}
void main()
{
set_timer1(15035);
setup_timer_1(T1_INTERNAL| T1_DIV_BY_1);
setup_comparator(NC_NC_NC_NC);
enable_interrupts(int_rda);
enable_interrupts(GLOBAL);
set_tris_a(0x00);
while(TRUE)
{
if(inc==1) {
disable_interrupts(INT_TIMER1);
while(inc==1) {sim1();}
enable_interrupts(int_rda);
}
if(inc==2) {
disable_interrupts(INT_TIMER1);
while (inc==2){sim2();}
enable_interrupts(int_rda);
}
if(inc==3) {
disable_interrupts(INT_TIMER1);
while (inc==3){sim3();}
enable_interrupts(int_rda);
}
if(inc==4) {
disable_interrupts(INT_TIMER1);
while (inc==4){sim4();}
enable_interrupts(int_rda);
}
if(inc==5) {
while(inc==5) {
pwm_dutyA=50;
pwm_dutyB=50;
enable_interrupts(INT_TIMER1);
enable_interrupts(GLOBAL); }
enable_interrupts(int_rda);
}
if(inc==6) inc=1;
if(inc==15) { disable_interrupts(INT_TIMER1); output_low(LED1);output_low(LED2);output_low(LED3);output_low(LED4);}
}
}
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I want to make some LED simulation for fun. all sim() is different to each other and just one simulation remain that is gradually ON/OFF the LEDs!! |
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temtronic
Joined: 01 Jul 2010
Posts: 9226
Location: Greensville,Ontario
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| Posted: Thu Mar 24, 2016 8:43 am |
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comment
1) I can't see where the variable 'inc' ever gets changed. You preset it to zero. In main() all of your if( tests)... always fail as inc=0 .
Jay |
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