code size reduction for OTA image storing

mahesh k

Expert 1530 points

Other Parts Discussed in Thread: CC2531

Hi All,

I am trying to reduce my code size in order to store the OTA image.

so far i have reduced 11KB code. ( after removing UART, USB, LCD and some unused variables)

I need to further reduce the code size to around 125KB. Now its size is around 190KB.

what other modules can be stripped to further reduce the code size.

I am using CC2531 USB dongle. ( I dont need any serial communication for it). using generic App on top of home automation 1.2.0 stack.

Thanks & Regards,

Mahesh KV

over 12 years ago

0 YiKai Chen over 12 years ago

Guru 735695 points

As I know, it is impossible to shrink zstack to that size. Why do you need to do so?

0 mahesh k over 12 years ago in reply to YiKai Chen

Expert 1530 points

hi Yikai Chen,

As the flash size of cc2531USB is 256KB, if i the router code takes 170KB, there will be no place left to store the image coming OTA. I think the image from OTA should be stored on the same flash?

thanks,

Mahesh KV

0 YiKai Chen over 12 years ago in reply to mahesh k

Guru 735695 points

No, we use an external EEPROM to store the OTA image. It is no way to only use internal flash to do it.

0 mahesh k over 12 years ago in reply to YiKai Chen

Expert 1530 points

Hi,

We dont use a external EEPROM, in our design. and our internal flash size is 256KB. Is it possible to do OTA in this scenario? If yes, how to do it?

Thanks,

Mahesh KV

0 YiKai Chen over 12 years ago in reply to mahesh k

Guru 735695 points

No, it is no way to do what you request. Maybe you still want to try. I would wish good luck to you.

0 mahesh k over 12 years ago in reply to YiKai Chen

Expert 1530 points

Thanks Yikai Chen , for the reply. i will discuss this with my superiors about this and decide , what next to do.

Thanks,

Mahesh KV

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code size reduction for OTA image storing