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PIC24H
Joined: 02 Mar 2015
Posts: 19
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| Application not at the address where it should be (#org) |
 Posted: Mon Mar 16, 2015 3:43 am |
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Hello forum, I got a little problem. I'm using a pic24hj256gp610 and ccs compiler 5.040
I managed to get the bootloader (CCS example bootloader) to run with no problems. I have modified the bootloader and made the code easier, because I didn't need all of those #if codes etc.
When I define the LOADER_SIZE and LOADER_END to for example 0xFBFF and include the header file into my application it locates it just fine. The first address which is in the .lst file of the application is 0xFC00.
This is a part the code of the header file.
| Code: | .
.
.
#define LOADER_SIZE 0x0FBFF
#define LOADER_END 0x0FBFF
#define LOADER_ADDR (LOADER_END - LOADER_SIZE)
.
.
.
#ifndef _bootloader
#ifdef BOOTLOADER_AT_START
#build (reset=LOADER_END+1,interrupt=LOADER_END+5)
#org 0, LOADER_END {}
#endif
#endif |
But as soon as I define the Bootloader size to 0xFFFF or above, the application doest start at the desired address anymore.
I know that the #org directive only works with a maximum size of 64KB. I tried using two #org directives as mentioned in this thread.
http://www.ccsinfo.com/forum/viewtopic.php?p=118042
and this
http://www.ccsinfo.com/forum/viewtopic.php?t=31941
but the first address in the application .lst file is still not the address i planned it to.
my current code looks like this
| Code: | #define LOADER_SIZE 0xFFFF
#define LOADER_END 0xFFFF
#define LOADER_ADDR (LOADER_END - LOADER_SIZE)
#ifndef _bootloader
#ifdef BOOTLOADER_AT_START
#build (reset=LOADER_END+1,interrupt=LOADER_END+5)
#if LOADER_END > 0x0FFFF
#org 0x00000, 0x0FFFF {}
#org 0x10000, LOADER_END {}
#else
#org 0x00000, LOADER_END {}
#endif
#endif
#endif |
the first address in the .lst file is 0x0000
I've tried to #org the main in the application .c file but it don't change anything.
can somebody help me or explain why it is like this? |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19505
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| Posted: Mon Mar 16, 2015 2:13 pm |
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Have you tried using the first ORG as shown, rather than changing the start address to 0?.
Note that PCM programmer leaves space for the bottom of memory jump instruction, when setting up this first ORG. |
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PIC24H
Joined: 02 Mar 2015
Posts: 19
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| Posted: Tue Mar 17, 2015 6:56 am |
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| Ttelmah wrote: | Have you tried using the first ORG as shown, rather than changing the start address to 0?.
Note that PCM programmer leaves space for the bottom of memory jump instruction, when setting up this first ORG. |
Which first ORG do you mean? This one? Leaving the 08? My MAX_LOADABLE is 0xFFFF
| Code: | #if getenv("FUSE_SET:WDT")==TRUE
#define MAX_LOADABLE 0x16800
#else
#define MAX_LOADABLE 0x16820
#endif
#if MAX_LOADABLE > 0x0FFFF
#org 0x00008, 0x0FFFF {}
#org 0x10000, MAX_LOADABLE {}
#else
#org 0x00008, MAX_LOADABLE {}
#endif |
I have tried that and now the GOTO is at address 104AC in the .lst file. |
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