dfu checking bootloader version/revision?

[Mike]

Hi,

In SD100v8, there is capability of checking the application version, to make sure no downgrade (or any other criteria required). The reference is in Link to SDK

However, I think this safe checking cannot be applied to a bootloader upgrade, as

1. There is no bootloader version field in the INIT PACKET
2. The actual library function that is called to check the init packet, dfu_init_prevalidate(uint8_t * p_init_data, uint32_t init_data_len) does not know whether the update is for bootloader/application/sd. So when the function is called

Just wanted to know, is there any simple way of checking the bootloader version before and upgrade when using the current library functions?

Thanks, Mike

[Øyvind Karlsen]

Hi Mike,

While it is true that the bootloader version field is missing, note that the dfu_init_packet_t uses a very generous 32bits for the app_version. You could for example use the first 16bits in app_version for the bootloader version, and the last 16 for the actual application version.

Unfortunately there is currently no template example for checking the application version.

Hopefully this answers your question,

-Øyvind

[Mike]

Thanks for the comments!