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Problem with the ICD flag

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berberis

Joined: 02 Feb 2006
Posts: 1

Problem with the ICD flag

Posted: Tue Feb 07, 2006 9:45 am

I wrote the test program:

Code:

#include "18f6622.h"
#device *=16

#fuses PROTECT=15
#fuses WRT=15
#fuses EBTR=15

main()
{
}

When compiled this gave the listing:

Code:

CCS PCH C Compiler, Version 3.235, 27782 07-Feb-06 15:24

Filename: C:\ccstest\main.LST

ROM used: 26 bytes (0%)
Largest free fragment is 65510
RAM used: 5 (0%) at main() level
5 (0%) worst case
Stack: 0 locations

*
0000: GOTO 0004
.................... #include "18f6622.h"
.................... //////// Standard Header file for the PIC18F6622 device ////////////////
.................... #device PIC18F6622
.................... #list
....................
.................... #device *=16....................
.................... #fuses PROTECT=15
.................... #fuses WRT=15
.................... #fuses EBTR=15
....................
.................... main()
.................... {
0004: CLRF FF8
0006: BCF FD0.7
0008: CLRF FEA
000A: CLRF FE9
000C: MOVF FC1,W
000E: ANDLW C0
0010: IORLW 0F
0012: MOVWF FC1
0014: MOVLW 07
0016: MOVWF FB4
.................... }
....................
0018: SLEEP

Configuration Fuses:
Word 1: 0F00 NOIESO NOFCMEN RESERVED
Word 2: 1F1F BROWNOUT WDT BORV25 NOPUT WDT32768
Word 3: 81F3 CCP2C1 NOLPT1OSC MCLR RESERVED
Word 4: 0085 STVREN NODEBUG LVP NOXINST BBSIZ1K RESERVED
Word 5: C00F NOCPD NOCPB
Word 6: E00F NOWRTD NOWRTC NOWRTB
Word 7: 400F NOEBTRB

Which is what I expected, I changed the #device line to

Code:

#device *=16 ICD=TRUE

This changed the Configuration Fuses section to

Code:

Word 1: 0F00 NOIESO NOFCMEN RESERVED
Word 2: 1E19 NOBROWNOUT NOWDT BORV25 NOPUT WDT32768
Word 3: 81F3 CCP2C1 NOLPT1OSC MCLR RESERVED
Word 4: 0000 NOSTVREN DEBUG NOLVP NOXINST BBSIZ1K RESERVED
Word 5: C0FF NOPROTECT NOCPD NOCPB
Word 6: E0FF NOWRT NOWRTD NOWRTC NOWRTB
Word 7: 40FF NOEBTRB NOEBTR

This causes problems when I try to download the code to an ICD-U40 as in the 6622 the last 3 configuration words have only 4 bits in lower byte so the download fails as the actual configuration fuses dont match the fuses generated by the compiler.

Any ideas?

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