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705150
Joined: 25 Apr 2013
Posts: 14
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| 12F1840 PWM fail |
 Posted: Tue Aug 12, 2014 8:18 am |
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i can not make the CCP1 function to work on A5, it works on A2
if anyone have any kind of solution.
compiler is 5.008
| Code: | #include <12F1840.h>
//#device adc=10
#fuses INTRC_IO,noWDT,NOPUT,NOPROTECT,NOCPD,noMCLR, noBROWNOUT,nolvp, HS
#use delay(internal=32000000)
#byte APFCON = 0x01 //CCP on RA5
#int_timer2
void updateClock() { ctime++; }
void main(void) {
enable_interrupts(GLOBAL);
enable_interrupts(INT_TIMER2);
setup_timer_2(T2_DIV_BY_1,255,1);
//setup_ccp1(CCP_PWM);
setup_ccp1(CCP1_A5);
set_pwm1_duty(500);
while(1)
{
count++;
set_pwm1_duty(count*500);
//if (count) output_high(pin_a5);
//else output_low(pin_a5);
delay_ms(1000);
}
} |
thank you in advance |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Tue Aug 12, 2014 11:54 am |
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The code shown below will output a PWM signal (3.9 KHz squarewave)
on pin A5. I tested this with vs. 5.026. I don't know if it works with
your version.
| Code: |
#include <12F1840.h>
#fuses INTRC_IO, NOWDT, BROWNOUT, PUT
#use delay(clock=4M)
#bit CCP1SEL = getenv("BIT:CCP1SEL")
//======================================
void main()
{
/*
// This puts PWM on Pin A2.
setup_ccp1(CCP_PWM);
setup_timer_2(T2_DIV_BY_1, 255, 1);
set_pwm1_duty(128);
*/
// This puts PWM on Pin A5.
setup_ccp1(CCP_PWM);
CCP1SEL = 1; // Get PWM output on pin A5
output_drive(PIN_A5);
setup_timer_2(T2_DIV_BY_1, 255, 1);
set_pwm1_duty(128);
while(1);
} |
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705150
Joined: 25 Apr 2013
Posts: 14
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| Posted: Wed Aug 13, 2014 9:19 am |
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Thank you very much "PCM programmer" for your reply, it works, i can now continue from this sample program in what i need.
Have a pleasant day |
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