Hi, Thanks for the explanation about infomenobits.
However I am not so sure about the the special purpose of info segment A. It can be seperately locked though. According to the user manual there is a newer method implemented in the 5xx devices which is located at 0x1a00 and further. This table is a lot more comprehensive and contain the calibrated ADC offsets. Furthermore the clock system has changed and is now accessed using UCSCTL0 - UCSCTL8. The old CAL_DCO_* and CAL_BC1_* pointers do not apply anymore. FLL is done inside the FLL now. Regards, Hans On Thu, 27 May 2010 17:50:50 +0200 "JMGross" <msp...@grossibaer.de> wrote: > > Indeed. When I started messing with the linker files for my bootloader > project, I noticed it too, but forgot to report it. I use the 12/08 > windows build of mspgcc3 (non-X) > > The differece between infomem and infomemnobits is that infomemnobits > is dumped after relocating. Its contents are not put into the output > file and not written to the MSP. So you can define variables placed > there and won't cause an infomem write when flashing the chip. > > In addition, since the 54xx have the INFOA segment handled differently > than the others, there should be separate sections. On CCE and IAR, all > 4 INFO sections are separate rather than one huge section. And on some > MSPs, INFOA contains unique calibration data and should be only usable > on purpose and not by jsut placing something in infomem. > > JMGross > > ----- Ursprüngliche Nachricht ----- > Von: Hans Nieuwenhuis > An: mspgcc-users@lists.sourceforge.net > Gesendet am: 27 Mai 2010 12:33:04 > Betreff: [Mspgcc-users] Linker script for msp430x54xx > > Hi all, > > Just found out that binutils (2.20.1, but also older revs.) installs > incorrect linker files for the msp430x54xx parts. These parts have > their bootloader starting at 0x1000, but as shown in the snippet blow > that's where the linker puts the infomem section. Infomem should be > four blocks of 128 bytes starting at 0x1800. > > bootloader(rx) : ORIGIN = 0x0c00, LENGTH = 1K > infomem(rx) : ORIGIN = 0x1000, LENGTH = 256 > infomemnobits(rx) : ORIGIN = 0x1000, LENGTH = 256 > > What is the purpose of the sections infomem and infomemnobits as they > both point the same start address? Can someone shed a light on this? > > > ------------------------------------------------------------------------------ > > _______________________________________________ > Mspgcc-users mailing list > Mspgcc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/mspgcc-users >
