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allenhuffman
Joined: 17 Jun 2019
Posts: 537
Location: Des Moines, Iowa, USA
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| CCS create .hex file with multiple vector tables? |
 Posted: Fri Dec 20, 2019 10:00 am |
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For my bootloader project, I create the bootloader as one .hex file, and the application as a second .hex file.
For manufacturing, I want to give them one .hex file that will contain both.
I can manually merge and create a file and use a tool I wrote to fix the CRC line at the end:
;CRC=XXXX
...but I wondered if there was a trick to get the compiler to do it.
When I build the application file, I use #build/#org statements to cause it to skip the bootloader area of flash and relocate the vector table, something like this:
| Code: | #BUILD (RESET=APP_A_ADDRESS) // Set A Reset vector location.
#BUILD (INTERRUPT=APP_A_ADDRESS+0x8) // Set A Interrupt vector lopcation.
#ORG 0x0, APP_A_ADDRESS-1 {} // Don't use Bootloader partition.
#ORG APP_B_ADDRESS, FLASH_SIZE-1 {} // Don't use B partition. |
The bootloader project basically uses defaults (vector table at 0) though I did add an #org that blocks out the application area, so it prevents the build from being too large.
I did some experiments trying to move these into separate files and build them together using multi-unit compile, but it is not getting me the result I want.
Does anyone know if this is even possible?
_________________
Allen C. Huffman, Sub-Etha Software (est. 1990) http://www.subethasoftware.com
Embedded C, Arduino, MSP430, ESP8266/32, BASIC Stamp and PIC24 programmer.
http://www.whywouldyouwanttodothat.com ? |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19260
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| Posted: Fri Dec 20, 2019 1:31 pm |
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You can #import the second set of code.
Honestly easiest way in general is just to load both sequentially in
the programming software, then export the result. |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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jeremiah
Joined: 20 Jul 2010
Posts: 1320
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| Posted: Fri Dec 20, 2019 7:27 pm |
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Just to give kind of a minimal example:
Bootloader:
| Code: |
#include <24fj64ga004.h>
#FUSES NODEBUG
#use delay(crystal=8000000)
// Define start of application
#define APPLICATION_START 0x800
#define APPLICATION_STOP (getenv("PROGRAM_MEMORY")-1)
// Add IVT jump table
#INT_DEFAULT FAST
void isr_relocate(){
jump_to_isr(APPLICATION_START+4);
}
//prevent bootloader from putting code in application space
#org APPLICATION_START, APPLICATION_STOP {}
void main(void)
{
#asm
BRA APPLICATION_START
#endasm
while(TRUE);
}
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Application
| Code: |
#include <24fj64ga004.h>
#FUSES NONE //NO FUSES!
#use delay(clock=8000000) //Make sure #use delay doesn't put any FUSES either
// Define start of application
#define APPLICATION_START 0x800
// Tell compiler to put code in application space
#build(reset=APPLICATION_START,interrupt=APPLICATION_START+4)
// Tell compiler not to use bootloader space
#org 0,APPLICATION_START-1{}
void main(void)
{
while(TRUE);
}
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Combined using IMPORT:
| Code: |
#include <24fj64ga004.h>
#FUSES NODEBUG
#use delay(crystal=8000000)
// Define start of application
#define APPLICATION_START 0x800
#define APPLICATION_STOP (getenv("PROGRAM_MEMORY")-1)
// Add IVT jump table
#INT_DEFAULT FAST
void isr_relocate(){
jump_to_isr(APPLICATION_START+4);
}
//Import default application and reserve all of the application space
#import(HEX,FILE=application.hex,RANGE=APPLICATION_START:APPLICATION_STOP)
void main(void)
{
#asm
BRA APPLICATION_START
#endasm
while(TRUE);
}
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Here are the respective hex files:
Bootloader:
| Code: |
Program Memory
000000: 00040206 00000000
000006: 00000808
000008: 0000080C 00000810 00000814 00000818
000010: 0000081C 00000820 00000824 00000828
000018: 0000082C 00000830 00000834 00000838
000020: 0000083C 00000840 00000844 00000848
000028: 0000084C 00000850 00000854 00000858
000030: 0000085C 00000860 00000864 00000868
000038: 0000086C 00000870 00000874 00000878
000040: 0000087C 00000880 00000884 00000888
000048: 0000088C 00000890 00000894 00000898
000050: 0000089C 000008A0 000008A4 000008A8
000058: 000008AC 000008B0 000008B4 000008B8
000060: 000008BC 000008C0 000008C4 000008C8
000068: 000008CC 000008D0 000008D4 000008D8
000070: 000008DC 000008E0 000008E4 000008E8
000078: 000008EC 000008F0 000008F4 000008F8
000080: 000008FC 00000900 00000904 00000908
000088: 0000090C 00000910 00000914 00000918
000090: 0000091C 00000920 00000924 00000928
000098: 0000092C 00000930 00000934 00000938
0000A0: 0000093C 00000940 00000944 00000948
0000A8: 0000094C 00000950 00000954 00000958
0000B0: 0000095C 00000960 00000964 00000968
0000B8: 0000096C 00000970 00000974 00000978
0000C0: 0000097C 00000980 00000984 00000988
0000C8: 0000098C 00000990 00000994 00000998
0000D0: 0000099C 000009A0 000009A4 000009A8
0000D8: 000009AC 000009B0 000009B4 000009B8
0000E0: 000009BC 000009C0 000009C4 000009C8
0000E8: 000009CC 000009D0 000009D4 000009D8
0000F0: 000009DC 000009E0 000009E4 000009E8
0000F8: 000009EC 000009F0 000009F4 000009F8
000200: 00FEA000 00FE8000 00064000 0022780F
000208: 00227FF0 00B7A020 00000000 00A8E081
000210: 00EF2744 00EFA32C 003702F5 0037FFFF
000218: 00FE4000
Configuration Words
00ABFC: FF00FAD5 FF003F7F
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Application:
| Code: |
Program Memory
000800: 000409FC 00000000
0009FC: 0022780F 00227FF0
000A00: 00B7A020 00000000 00A8E081 00EFA32C
000A08: 0037FFFF 00FE4000
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Combined:
| Code: |
Program Memory
000000: 00040206 00000000
000006: 00000808
000008: 0000080C 00000810 00000814 00000818
000010: 0000081C 00000820 00000824 00000828
000018: 0000082C 00000830 00000834 00000838
000020: 0000083C 00000840 00000844 00000848
000028: 0000084C 00000850 00000854 00000858
000030: 0000085C 00000860 00000864 00000868
000038: 0000086C 00000870 00000874 00000878
000040: 0000087C 00000880 00000884 00000888
000048: 0000088C 00000890 00000894 00000898
000050: 0000089C 000008A0 000008A4 000008A8
000058: 000008AC 000008B0 000008B4 000008B8
000060: 000008BC 000008C0 000008C4 000008C8
000068: 000008CC 000008D0 000008D4 000008D8
000070: 000008DC 000008E0 000008E4 000008E8
000078: 000008EC 000008F0 000008F4 000008F8
000080: 000008FC 00000900 00000904 00000908
000088: 0000090C 00000910 00000914 00000918
000090: 0000091C 00000920 00000924 00000928
000098: 0000092C 00000930 00000934 00000938
0000A0: 0000093C 00000940 00000944 00000948
0000A8: 0000094C 00000950 00000954 00000958
0000B0: 0000095C 00000960 00000964 00000968
0000B8: 0000096C 00000970 00000974 00000978
0000C0: 0000097C 00000980 00000984 00000988
0000C8: 0000098C 00000990 00000994 00000998
0000D0: 0000099C 000009A0 000009A4 000009A8
0000D8: 000009AC 000009B0 000009B4 000009B8
0000E0: 000009BC 000009C0 000009C4 000009C8
0000E8: 000009CC 000009D0 000009D4 000009D8
0000F0: 000009DC 000009E0 000009E4 000009E8
0000F8: 000009EC 000009F0 000009F4 000009F8
000200: 00FEA000 00FE8000 00064000 0022780F
000208: 00227FF0 00B7A020 00000000 00A8E081
000210: 00EF2744 00EFA32C 003702F5 0037FFFF
000218: 00FE4000
000800: 000409FC 00000000
0009FC: 0022780F 00227FF0
000A00: 00B7A020 00000000 00A8E081 00EFA32C
000A08: 0037FFFF 00FE4000
Configuration Words
00ABFC: FF00FAD5 FF003F7F
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compiled using 5.078
Note that for simplicity I choose APPLICATION _STOP as the end of program memory, but in reality you can't have the application on the last page since the fuses reside there. The actual math would require calculating the address of the start of the last page and setting APPLICATION_STOP to that minus 1.
Important tips for the bootloader:
1. use #int_default with jump_to_isr() to generate the IVT jump table....not really documented well by CCS but that's how
2. You either need to #org out the application space or #import in a default application to reserve that space from the bootloader
Important tips for application:
1. use #FUSES NONE to avoid overwriting the fuses
2. in the #use delay() use "clock=" instead of other options to avoid having it also adjust the fuses |
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allenhuffman
Joined: 17 Jun 2019
Posts: 537
Location: Des Moines, Iowa, USA
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| Posted: Mon Dec 30, 2019 3:28 pm |
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| Ttelmah wrote: | You can #import the second set of code.
Honestly easiest way in general is just to load both sequentially in
the programming software, then export the result. |
Ah, I didn't know it could do that. I'll go check for command line options. Thanks!
_________________
Allen C. Huffman, Sub-Etha Software (est. 1990) http://www.subethasoftware.com
Embedded C, Arduino, MSP430, ESP8266/32, BASIC Stamp and PIC24 programmer.
http://www.whywouldyouwanttodothat.com ? |
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allenhuffman
Joined: 17 Jun 2019
Posts: 537
Location: Des Moines, Iowa, USA
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| Posted: Mon Dec 30, 2019 3:33 pm |
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| jeremiah wrote: | | Just to give kind of a minimal example: |
Most helpful. Thanks.
I still want to be able to manually build the application separately, so I am going to play with this and make a third project that uses #import to pull in the first two. Maybe.
_________________
Allen C. Huffman, Sub-Etha Software (est. 1990) http://www.subethasoftware.com
Embedded C, Arduino, MSP430, ESP8266/32, BASIC Stamp and PIC24 programmer.
http://www.whywouldyouwanttodothat.com ? |
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