how to store data in arm7 flash

sam7 iap api

Hi,

when my arm7 mc downloads a file in his ram I want to store it permanent in the flash. So when I reboot it the data should not get lost. How can I achieve this?

HI

What type of ARM7 are you using :

LPC21xx,TMS470,STR7,SAM7,ADUC7xxx etc

each MC has it's own Flash programming API

All the best

Bobi

Hi,
I want to save some Data in the Flash of the TMS470R1A256. Does anybody have code examples or a flash API or a documentation?
Hardware:TMS470 - Rowley Crossworks - CrossConnect
Thanks a lot!
RaPo470

Hi

If you wish to save only few parameter :


const unsigned char DAT[0x05,0x06,0x012] the compiler save it automatecly to FLASH memory


All the best

BObi

bobcat1 said:

Hi

If you wish to save only few parameter :


const unsigned char DAT[0x05,0x06,0x012] the compiler save it automatecly to FLASH memory


All the best

BObi

Click to expand...

Hi,
I want to save some data inn the falsh at running time, not when compiling the program. I want to save data from the ADC or Positions from a motor before the controller loses power!
But thanks anyway - good try!
Best regards
RaPo470

it depends on which flash device u r using.
r u using a nand flash or nor flash.
may be u can post the part number of the flash here.

Which device r u using ?

You want to save this data at External SPI/I2C FLASH or you want to use IAP commands ?

that perticularlty depends on your ARM device type as every device may have diff IAP command s.

Can you Elaborate your application with device Numbers..

Hi,
I am using the TMS470R1A256 with 256KByte On-Chip-Flash. I want to save the data into the last sector(0x1003E000 - 0x1003FFFF) of this On-Chip-Flash, not in any external SPI-Flash-Memory.
Thanks for your reply.
RaPo470

Hi RaPo470

For that you should check
TMS470 Family – F05 Flash ModuleSoftware Peripheral Driver User’s
Specification -
All the Flash API 's are given into it .

I am trying to make one TMS470R1A256 Eval board if you have any idea pls help me .First point I have stuck is it does not have any Serial Programming utility.

Thanks and Regards

Girish

girish_wabale said:

Hi RaPo470

For that you should check
TMS470 Family – F05 Flash ModuleSoftware Peripheral Driver User’s
Specification -
All the Flash API 's are given into it .

I am trying to make one TMS470R1A256 Eval board if you have any idea pls help me .First point I have stuck is it does not have any Serial Programming utility.

Thanks and Regards

Girish

Click to expand...

Hi Girish,
I tried the Flash-API but I couldn't make it working. I am using the Rowley Crossworks (very good and exelent support). In the Datasheets I read that an erase-sector could last 2 or more seconds. This is much to long, when you want to save position datas on power down!
There are EvalBoards from TI or Olimex. They use the JTag-Interface for Programming. For serial programming you have to program a loader and program that loader to the controller( with a JTag programmer). On serial Upload this loader must run in RAM , so you can erase the complete Flash and program the new software (including the loader for the next programming). All in all no easy job, i think so far. A cheep and working programmer is Wiggler on a PC's parallel Port.
I used the Olimex-Board for trying out the Flash-API without success. I could not find the TI-source-code for the Flash-API so debugging is not easy.

Thank you and best regards
RaPo470