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billy
Joined: 16 Aug 2013
Posts: 2
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| Internal Oscillator 12F615 |
 Posted: Sun Aug 18, 2013 11:13 pm |
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Good day,
I am new with the software and a student.  I need some advice on the setup of the internal oscillator. How do I know if the internal oscillator are running when using the PIC12F615? I have done the setup, but it seems that my processor is not running.
See my code:
| Code: |
#include <12F615.h>
#device adc=10
#FUSES NOWDT //No Watch Dog Timer
#FUSES INTRC_IO //Internal RC Osc, no CLKOUT
#FUSES NOPROTECT //Code not protected from reading
#FUSES IOSC8 //INTOSC speed 8 MHz
#FUSES NOMCLR //Master Clear pin used for I/O
#FUSES NOBROWNOUT //No brownout reset
#FUSES NOPUT //No Power Up Timer
#use delay(clock=8000000)
void main()
{
setup_adc_ports(sAN3|VSS_Vref);
setup_adc(ADC_CLOCK_INTERNAL);
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DIV_BY_16,255,1);
setup_comparator(NC_NC_NC_NC);
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Hope somebody can assist me.
Billy. |
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stinky
Joined: 05 Mar 2012
Posts: 99
Location: Central Illinois
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| Posted: Sun Aug 18, 2013 11:46 pm |
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| How do you know it's not working? |
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billy
Joined: 16 Aug 2013
Posts: 2
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| Posted: Mon Aug 19, 2013 12:44 am |
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Stinky,
My code is quite simple. made an output high for LED. After programming the pic, put in my development board. LED is not on when powering up.
If I simulate the program in proteus, the program is working. |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19552
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| Posted: Mon Aug 19, 2013 1:12 am |
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The point is that what you post does not show the LED code.
Anyway some comments inline:
| Code: |
#include <12F615.h>
#device adc=10
#FUSES NOWDT //No Watch Dog Timer
#FUSES INTRC_IO //Internal RC Osc, no CLKOUT
#FUSES NOPROTECT //Code not protected from reading
#FUSES IOSC8 //INTOSC speed 8 MHz
#FUSES NOMCLR //Master Clear pin used for I/O
#FUSES NOBROWNOUT //No brownout reset
#FUSES NOPUT //No Power Up Timer
#use delay(clock=8000000)
#define LED PIN_xx //Select to suit your LED
void main()
{
setup_adc_ports(sAN3|VSS_Vref);
setup_adc(ADC_CLOCK_INTERNAL);
//Read the data sheet. Is this a legal ADC clock at this CPU clock....
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DIV_BY_16,255,1);
setup_comparator(NC_NC_NC_NC);
do
{
output_toggle(LED);
delay_ms(1000);
} while (TRUE);
}
//This shows flashing an LED
//Things that would stop it working:
//1) Choosing pin A3 for the LED - this is _input only_.
//2) Not having a suitable current limiting resistor on the LED
//If the LED is wired directly, it'll short out the PIC, odds are it'll reset
//and nothing will apparently happen.
//3) Choosing pin A4 for the LED. This is AN3, which you are setting
//as an analog input.
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Read the inline comments.
Best Wishes |
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