View previous topic :: View next topic |
Author |
Message |
UpInSmoke01
Joined: 16 Sep 2013 Posts: 5
|
CONFIG1H.FOSC<3:0> #fuses not working |
Posted: Thu Nov 21, 2013 10:22 am |
|
|
Setup:
* I am using: PIC18LF46K22.
* I am using compiler version 4.128
* I build from in MPLab 8.84
Problem:
I am trying to set the:
CONFIG1H.FOSC<3:0>: Oscillator Selection bits
... but can't get it to work
I tried doing this two ways:
1) Through code - I check the "Configuration bits set in code" in MPLAB and then recompile with different #fuses (INTRC_IO, INTRC, LP, ...).
2) Through MPLAB - Configure->Configuration Bits dialog.
...then I check the hex file produced by the build, but it always has the same CRC.
I see from this post:
http://www.ccsinfo.com/forum/posting.php?mode=newtopic&f=1
“Don't compile with the "Build Configuration" in MPLAB set to "DEBUG".
The PROTECT, WDT, BROWNOUT, and maybe some other fuses are
automatically disabled for Debug mode.”
However, my ‘Build Configuration’ is set to ‘RELEASE’.
I also did some tests where I look at the .hex file after compiling with other #fuses changed. These do indeed change the build output.
Build1
//CONFIG1H.PLLCFG:
#fuses PLLEN
//#fuses NOPLLEN
:0E0000000018173800A081000FC00FE00F405D
:00000001FF
;PIC18LF46K22
;CRC=27E3 CREATED="20-Nov-13 18:16"
Build2
//CONFIG1H.PLLCFG:
//#fuses PLLEN
#fuses NOPLLEN
:0E0000000008173800A081000FC00FE00F406D
:00000001FF
;PIC18LF46K22
;CRC=B821 CREATED="21-Nov-13 10:46"
Build3
//CONFIG3H.CCP2MX
//#fuses CCP2B3
#fuses CCP2C1
:0E0000000018173800A181000FC00FE00F405C
:00000001FF
;PIC18LF46K22
;CRC=8544 CREATED="21-Nov-13 10:50"
Can someone tell me why CONFIG1H.FOSC<3:0> #fuses settings have no effect?
|
|
![](templates/subSilver/images/spacer.gif) |
temtronic
Joined: 01 Jul 2010 Posts: 9173 Location: Greensville,Ontario
|
|
Posted: Thu Nov 21, 2013 2:56 pm |
|
|
any chance you've got ICD set to true or yes ?
I like the 46k22, always set fuses within the program not by MPLAB and have never had any problems....
hth
jay |
|
![](templates/subSilver/images/spacer.gif) |
PCM programmer
Joined: 06 Sep 2003 Posts: 21708
|
|
Posted: Fri Nov 22, 2013 12:15 am |
|
|
Until you post a test program, nothing much can happen, because we don't
know what you're doing. If you don't post one, then we have write one
and it won't match your problem.
For example, I install vs. 4.128 and compile this program:
Code: |
#include <18LF46K22.h>
#fuses INTRC_IO,NOWDT,PUT,BROWNOUT, NOPLLEN
#use delay(clock=4M)
//===================================
void main()
{
while(1);
} |
Quote: |
:1000000002EF00F0F86AD09EEA6AE96A500ED36EF9
:100010009B9C9B9E0101886BC150F00BC16E000E32
:100020000F01386F3C6F396F3A6F3B6F776A786AB0
:06003000796AFFD703000E
:020000040030CA
:0E00000000E81E3C00BF81000FC00FE00F4063
:00000001FF
;PIC18LF46K22
;CRC=58AE CREATED="21-Nov-13 22:12"
|
Then I comment out the NOPLLEN and re-compile:
Code: | #include <18LF46K22.h>
#fuses INTRC_IO,NOWDT,PUT,BROWNOUT //, NOPLLEN
#use delay(clock=4M)
//======================================
void main()
{
while(1);
} |
And the CRC is different:
Quote: |
:1000000002EF00F0F86AD09EEA6AE96A500ED36EF9
:100010009B9C9B9E0101886BC150F00BC16E000E32
:100020000F01386F3C6F396F3A6F3B6F776A786AB0
:06003000796AFFD703000E
:020000040030CA
:0E00000000F81E3C00BF81000FC00FE00F4053
:00000001FF
;PIC18LF46K22
;CRC=31EC CREATED="21-Nov-13 22:13" |
And that's not the result that you're getting.
Post a test program ! |
|
![](templates/subSilver/images/spacer.gif) |
Ttelmah
Joined: 11 Mar 2010 Posts: 19366
|
|
Posted: Fri Nov 22, 2013 1:41 am |
|
|
It's worth saying that there are _three_ things that set you to 'DEBUG'.
1) MPLAB. Default build configuration in DEBUG, and this overrides CCS settings.
2) DEBUG fuse.
3) ICD=TRUE. Automatically sets the debug fuse.
Any of these force the debug mode to be selected. _All_ need to be turned off.
Best Wishes |
|
![](templates/subSilver/images/spacer.gif) |
temtronic
Joined: 01 Jul 2010 Posts: 9173 Location: Greensville,Ontario
|
|
Posted: Fri Nov 22, 2013 6:37 am |
|
|
re :
1) MPLAB. Default build configuration in DEBUG, and this overrides CCS settings.
...
you can select 'RELEASE' to be the default build configuration !
If you build in 'DEBUG' mode,burn the PIC, try to run in the real world, it won't work as expected....
hth
jay |
|
![](templates/subSilver/images/spacer.gif) |
|