Hello, I use the information-flash to store some constant values The code is based on code form TI.
void Flash_Init(void) void Flash_WriteByte(char *Data_ptr, char byte) void Flash_WriteWord(int *Data_ptr, int word) void Flash_Erase(int *Data_ptr) int Flash_Copy(int *source_ptr, int *dest_ptr, int size) I use segment A to store the value and segment B to backup the values if segment A is updated (copy to B erased A rewrite new data to A) It is possible that A was erased and then the power is down. So al data is lost! No wory just call the function Flash_CheckOnStartUp() a the begin of your program. (Is it done in Flash_Init()) It restore segment B is segment A is all erased. The application uses Flash_WriteInfo(int index, int word) to update the info flash and the macros #define Flash_ReadInfo(index) *(int *) (FSEG_A + (index*2)) #define Flash_ReadInfoMsb(index) *(char *) (FSEG_A + (index*2)+1) #define Flash_ReadInfoLsb(index) *(char *) (FSEG_A + (index*2)) To read form flash. Note that index it between 0 and 63 0<= index<=63 Note that it is posible to write bytes. Robert Bon Steve Underwood wrote: > Daniel Néri wrote: > > >Steve Underwood <ste...@coppice.org> writes: > > > > > > > >>You can't write bytes. You have to write whole 16 bit words. > >> > >> > > > >Sorry, but this is simply not true. MSP430 flash memory is bit-, byte- > >and word-programmable. > > > > > Then tell us how. The rest of us only know how to program whole 16 bit > words, including the chip's designers. Everyone else gets the effect of > programming a bit or byte in the way I described. You write a whole > word, where the bit you don't want to change are set to 1. > > Regards, > Steve > > ------------------------------------------------------- > This SF.net email is sponsored by: IBM Linux Tutorials. > Become an expert in LINUX or just sharpen your skills. Sign up for IBM's > Free Linux Tutorials. Learn everything from the bash shell to sys admin. > Click now! http://ads.osdn.com/?ad_id78&alloc_id371&opÌk > _______________________________________________ > Mspgcc-users mailing list > Mspgcc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/mspgcc-users
mspflash.c
Description: application/unknown-content-type-c_auto_file
mspflash.h
Description: application/unknown-content-type-h_auto_file
