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muiratinas
Joined: 13 Oct 2010
Posts: 16
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| APFCON |
 Posted: Thu Jul 07, 2011 4:07 am |
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Hi all
I have problem with alternating the pwm signal between two pin.
when I use "APFCON=0x00", pwm signal is created at pin A2.
But when I change "APFCON=0x01", pwm signal is wiped at A2 and also not created at pin A5.
I searched the other topics but it doesnt work. Compiler version is 4.114
What is the problem?
Main.h
| Code: | #include <12F615.h>
#FUSES NOWDT //No Watch Dog Timer
#FUSES INTRC_IO //Internal RC Osc, no CLKOUT
#FUSES NOPUT //No Power Up Timer
#FUSES MCLR //Master Clear pin enabled
#FUSES NOPROTECT //Code not protected from reading
#FUSES IOSC8 //INTOSC speed 8MHz
#FUSES NOBROWNOUT //No brownout reset
#use delay(int=8000000) |
Main.c
| Code: | #include <main.h>
#byte APFCON = 0x93
void main()
{
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DIV_BY_1,49,1);
setup_ccp1(CCP_PWM); //PWM,CCP_PWM_FULL_BRIDGE
set_pwm1_duty(20);
setup_comparator(NC_NC_NC_NC);// This device COMP currently not supported by the PICWizard
//setup_ccp1(CCP_P1A_A5);
APFCON=0x01;
delay_ms(1000);
APFCON=0x00;
while(1);
//TODO: User Code
} |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19513
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| Posted: Thu Jul 07, 2011 8:27 am |
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Obvious guess. TRIS. The compiler knows to clear the TRIS to make the pin an output for the default pin, when PWM is setup, but the default setting on A5, will be for the pin to be set as an input.
Try 'output_drive(PIN_A5);'
Best Wishes |
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