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koenbielen
Joined: 23 Apr 2009
Posts: 42
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| Bootloader for 18F4525 |
 Posted: Sat Apr 25, 2009 6:00 am |
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Hi,
My name is koen and I have been looking around here for a good bootloader.
The tiny bootloaders seems a good option.
How to implement this is a big ? for me.
So as I understand I need to do 4 things to get this up and running
1) program the PIC via MPLAB ICD2.
I did use the tinybld18F2620.HEX.
Do I need to change something in this file?
Do I need to compile?
2) after having the PIC programmed I startup the TinyBld software
I have used the good comport but after reset and pressing the button Check PIC
Connected to \\.\COM1 at 115200
Searching for PIC ...Not found,
ERROR!
3) In the source code below I need to add a ORG statement or something else?
Where should I place this and what exactly?
I am using the CCS compiler version 4.065
| Code: |
#include <18F4525.h>
#device adc=10
#FUSES NOWDT //No Watch Dog Timer
#FUSES WDT128 //Watch Dog Timer uses 1:128 Postscale
#FUSES INTRC_IO //High speed osc with HW enabled 4X PLL
#FUSES NOPROTECT //Code not protected from reading
#FUSES NOIESO //Internal External Switch Over mode disabled
#FUSES NOBROWNOUT //No brownout reset
#FUSES BORV21 //Brownout reset at 2.1V
#FUSES NOPUT //No Power Up Timer
#FUSES NOCPD //No EE protection
#FUSES NOSTVREN //Stack full/underflow will not cause reset
#FUSES NODEBUG //No Debug mode for ICD
#FUSES NOLVP //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O
#FUSES NOWRT //Program memory not write protected
#FUSES NOWRTD //Data EEPROM not write protected
#FUSES NOEBTR //Memory not protected from table reads
#FUSES NOCPB //No Boot Block code protection
#FUSES NOEBTRB //Boot block not protected from table reads
#FUSES NOWRTC //configuration not registers write protected
#FUSES NOWRTB //Boot block not write protected
#FUSES NOFCMEN //Fail-safe clock monitor disabled
#FUSES NOXINST //Extended set extension and Indexed Addressing mode disabled (Legacy mode)
#FUSES NOPBADEN //PORTB pins are configured as digital I/O on RESET
#FUSES RESERVED //Used to set the reserved FUSE bits
#FUSES MCLR //Master Clear pin enabled
#use delay(clock=32000000)
#use rs232(baud=38400,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=8,DISABLE_INTS,STREAM=NETWERK)
//----------------------------------------------------------------
#INT_RDA
void SerialDataAvailable() {
if(kbhit(NETWERK))
{
ReadSerialData();
}
}
//----------------------------------------------------------------
void main()
{
setup_oscillator (osc_8MHZ | OSC_PLL_ON);
setup_uart(1);
delay_ms(300);
//-----------------------------------------------------------------------------------------------------------------------------------------------------
set_tris_a (0xFF);
set_tris_b (0x7F);
set_tris_c (0xB9);
set_tris_d (0xF0);
set_tris_e (0XF8);
//-----------------------------------------------------------------------------------------------------------------------------------------------------
while (1)
{
output_bit(PIN_D1 ,1);
delay_ms(2);
output_bit(PIN_D1 ,0);
delay_ms(2);
}
}
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4) after compiling this I and good connection to the hardware (need to solve Question 2 first)
I need to open this hexfile and download it to the processor.
And then hocus pocus it should run... not for me... (Bummer)
So if there is someone who would like to help me or has a link to a good manual I would be thankful
Thanks in advance 
Kind Regards 
Koen Bielen |
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koenbielen
Joined: 23 Apr 2009
Posts: 42
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| Bootloader is up and running |
| Posted: Sat Apr 25, 2009 4:13 pm |
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Bootloader is up and running 
Thanks
Kind Regards
Koen |
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misperry
Joined: 03 Mar 2009
Posts: 40
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| Posted: Tue May 19, 2009 9:49 am |
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How did you get your problem fixed if I might ask cuz I am running into the same thing.
Thanks! |
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Guest
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| Posted: Wed May 20, 2009 5:12 am |
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Hi,
I added some code
#define MAX_FLASH 0xC000 //for PICs with 48KB of mem
#define LOADER_SIZE 0xFF //tinybld size + a bit more (200 bytes is enough)
#org MAX_FLASH-LOADER_SIZE , MAX_FLASH-1 {}
as below and changed the internal osc in the bootloader file.
| Code: |
#include <18F4525.h>
#device adc=10
#FUSES NOWDT //No Watch Dog Timer
#FUSES WDT128 //Watch Dog Timer uses 1:128 Postscale
#FUSES INTRC_IO //High speed osc with HW enabled 4X PLL
#FUSES NOPROTECT //Code not protected from reading
#FUSES NOIESO //Internal External Switch Over mode disabled
#FUSES NOBROWNOUT //No brownout reset
#FUSES BORV21 //Brownout reset at 2.1V
#FUSES NOPUT //No Power Up Timer
#FUSES NOCPD //No EE protection
#FUSES NOSTVREN //Stack full/underflow will not cause reset
#FUSES NODEBUG //No Debug mode for ICD
#FUSES NOLVP //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O
#FUSES NOWRT //Program memory not write protected
#FUSES NOWRTD //Data EEPROM not write protected
#FUSES NOEBTR //Memory not protected from table reads
#FUSES NOCPB //No Boot Block code protection
#FUSES NOEBTRB //Boot block not protected from table reads
#FUSES NOWRTC //configuration not registers write protected
#FUSES NOWRTB //Boot block not write protected
#FUSES NOFCMEN //Fail-safe clock monitor disabled
#FUSES NOXINST //Extended set extension and Indexed Addressing mode disabled (Legacy mode)
#FUSES NOPBADEN //PORTB pins are configured as digital I/O on RESET
#FUSES RESERVED //Used to set the reserved FUSE bits
#FUSES MCLR //Master Clear pin enabled
#define MAX_FLASH 0xC000 //for PICs with 48KB of mem
#define LOADER_SIZE 0xFF //tinybld size + a bit more (200 bytes is enough)
#org MAX_FLASH-LOADER_SIZE , MAX_FLASH-1 {}
#use delay(clock=32000000)
#use rs232(baud=38400,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=8,DISABLE_INTS,STREAM=NETWERK)
//----------------------------------------------------------------
#INT_RDA
void SerialDataAvailable() {
if(kbhit(NETWERK))
{
ReadSerialData();
}
}
//----------------------------------------------------------------
void main()
{
setup_oscillator (osc_8MHZ | OSC_PLL_ON);
setup_uart(1);
delay_ms(300);
//-----------------------------------------------------------------------------------------------------------------------------------------------------
set_tris_a (0xFF);
set_tris_b (0x7F);
set_tris_c (0xB9);
set_tris_d (0xF0);
set_tris_e (0XF8);
//-----------------------------------------------------------------------------------------------------------------------------------------------------
while (1)
{
output_bit(PIN_D1 ,1);
delay_ms(2);
output_bit(PIN_D1 ,0);
delay_ms(2);
}
}
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Hope this helps
Byby
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