Can't set ISR vector table to 0x00000000

lpcware — Wed, 15 Jun 2016 17:28:59 GMT

Content originally posted in LPCWare by cance on Mon Feb 24 04:33:38 MST 2014
Hi,

I have a problem with my program. I'm using a LPC1754. I have a software that was coded with an older version of CooCox by a former employee and I needed to add a feature and the feature works fine. Only when I exit the menu and the data should be saved to the flash I get an error (exception thrown). But everything I compile with CooCox makes problems. We have an old hex-File for our software that works fine but if I generate a new hex-file from the old project I get a different hex-file. The difference is that the old hex-file has its isr vector table at 0x00000000 and the code starts at 0x00002000 but the new hex-file has its vector table at 0x00002000 that is where the code should start and not the vector table. When I change the starting address of th code in the project settings the isr vector starts at the new address. It is always the address where the code should start. I think because of this I have the problem with the exception. Here you have the two hex files or at least the part that is interesting.

Woring hex (old one)

:100000007C3B001011B1000079B1000079B1000013
:1000100079B1000079B1000079B100000000000062
:1000200000000000000000000000000079B10000A6
:1000300079B100000000000091E2000059F90000D1
:1000400079B1000079B1000079B1000079B1000008
:1000500079B1000079B1000079B1000079B10000F8
:1000600079B1000079B1000079B1000079B10000E8
:1000700079B1000079B1000079B1000079B10000D8
:1000800079B1000079B1000079B1000079B10000C8
:1000900079B1000079B1000079B1000079B10000B8
:1000A00079B1000079B1000079B1000079B10000A8
:1000B00079B1000079B1000079B1000079B1000098
:0C00C00079B1000079B1000079B10000B6
:1020000080B584B000AF02460B46FA71BB71FB7914
:10201000002B06D04FF000004FF0400107F060FFAA
:1020200005E04FF000004FF0400107F06FFFBB7973
:102030004FF00200194607F053FFBB796FEA030324

Not working hex

:10200000EC3C0010F9BC000069BD000069BD000097
:1020100069BD000069BD000069BD0000000000004E
:1020200000000000000000000000000069BD00008A
:1020300069BD00000000000091FF000001120100D6
:1020400069BD000069BD000069BD000069BD0000F8
:1020500069BD000069BD000069BD000069BD0000E8
:1020600069BD000069BD000069BD000069BD0000D8
:1020700069BD000069BD000069BD000069BD0000C8
:1020800069BD000069BD000069BD000069BD0000B8
:1020900069BD000069BD000069BD000069BD0000A8
:1020A00069BD000069BD000069BD000069BD000098
:1020B00069BD000069BD000069BD000069BD000088
:1020C00069BD000069BD000069BD000080B584B035
:1020D00000AF02460B46FA71BB71FB79002B06D0AC
:1020E0004FF000004FF0400108F06CFC05E04FF0AD
:1020F00000004FF0400108F07BFCBB794FF002007C

So now I cant do any changes to our program because I always get this error. I looked into the system_LPC17xx.c where I found this

//  Set Vector table offset value
#if (__RAM_MODE__==1)
  SCB->VTOR  = 0x10000000 & 0x3FFFFF80;
#else
  SCB->VTOR  = 0x00000000 & 0x3FFFFF80;
#endif

When I look at this the isr vector table should always start at 0x00000000 (it's on flash not on the RAM)

Another difference is the map-file in the old file I have this

Name             Origin             Length             Attributes
rom              0x00002000         0x0001e000         xr
ram              0x10000000         0x00004000         xrw
ram1             0x2007c000         0x00004000         xrw
isr              0x00000000         0xffffffff
*default*        0x00000000         0xffffffff

and in the new one I have this

Name             Origin             Length             Attributes
rom              0x00002000         0x0001e000         xr
ram              0x10000000         0x00004000         xrw
ram1             0x2007c000         0x00004000         xrw
*default*        0x00000000         0xffffffff

So there is no isr in the new one but I don't know why. The former employee told me that he didn't do anything special to make it work but he can't tell what the problem is.

I can't figure out where the problem is, Can anyone help me with this problem because don't know what to do.

Best regards Cance

LPC MicrocontrollersのトピックCan't set ISR vector table to 0x00000000

Can't set ISR vector table to 0x00000000