Hi all,
I have successfully burned the HID bootloader, and the pic 18f4550is getting detected. I burn a simple application that blinks a LED at PORTD.F3 (i.,e port RD3).
The programming is also successful via the bootloader ( i use the latest 2.9 series bootloader where the "magic line" :020000040000FA is not required)
The led is blinking but no matter what delay i set the LED keeps blinking at a constant rate. If i burn the code using a standard JDM programmer (without bootloader code all goes well.
I have not overwritten the bootloader section. my code starts at 0x1030. i thought may be the bootloader code tampers with the timer, oscillator and interrupt registered so i manually coded them to mimic their reset states (i refered the 18f4550 data sheets on resetstate of every register) still no luck. How much ever i give delay uisng Delay_ms() function, i get a constant blink rate. Pls suggest any ideas.
My whole project is stuck because of this. Need your help! kindly let me know in case you need more details
my code:
#pragma orgall 0x1030
void main()
{
UCON=0x00;
STKPTR=0x00;
INTCON=0x00;
INTCON2=0xFF;
INTCON3=0xC0;
TMR0H=0x00;
T0CON=0x00;
OSCCON=0x40;
T1CON=0x00;
TMR2=0x00;
T2CON=0x00;
ADCON0=0x00;
ADCON1 = 0x0F;
ADCON2=0x00;
CCP1CON=0x00;
CCP2CON=0x00;
T3CON=0x00;
IPR2=0xFF;
PIR2=0x00;
PIE2=0x00;
IPR1=0xFF;
PIR1=0x00;
PIE1=0x00;
OSCTUNE=0x00;
TRISD=0x00;
for(;;)
{
PORTD.F3=1;
Delay_ms(5000);
PORTD.F3=0;
Delay_ms(5000);
}
}
Microchip HID Boorloader for 18f4550- delays not working
General discussion on mikroC.
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- Posts: 3
- Joined: 23 Jan 2012 15:02
Microchip HID Boorloader for 18f4550- delays not working
#1 Post by Tamilblaze » 23 Jan 2012 18:58
- janko.kaljevic
- Posts: 3565
- Joined: 16 Jun 2011 13:48
Re: Microchip HID Boorloader for 18f4550- delays not working
#2 Post by janko.kaljevic » 24 Jan 2012 10:44
Hello,
I have checked your code and tested it with our USB HID bootloader and Delay function is working fine.
From this point I can not tell what could cause this.
Best regards.
I have checked your code and tested it with our USB HID bootloader and Delay function is working fine.
From this point I can not tell what could cause this.
Best regards.
-
- Posts: 3
- Joined: 23 Jan 2012 15:02
Re: Microchip HID Boorloader for 18f4550- delays not working
#3 Post by Tamilblaze » 25 Jan 2012 18:13
Janko,
you are awesome. Thanks for sending me the hex files to boot load the PIC.
I really love MikroC for its superiority and flexibility.
The LED is blinking properly now. No need of all those initialization.
you made me happy. Have a great day!
you are awesome. Thanks for sending me the hex files to boot load the PIC.
I really love MikroC for its superiority and flexibility.
The LED is blinking properly now. No need of all those initialization.
you made me happy. Have a great day!
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