RE: Clarification on DFU

JohnBrown — Thu, 08 Oct 2015 12:16:10 GMT

Yes, my own internal memory is running out of space! The version 2 chip does indeed have 256K. As far as where I read that the current MCP on PC doesn't support single bank, I read it in your DFU FAQ, but on re-reading it, I see that it may refer to an older SDK/MCP. Thanks, as always, for the helpful response.

RE: Clarification on DFU

Hung Bui — Thu, 08 Oct 2015 08:43:08 GMT

Hi JohnBrown,

On SDK v9.0 you can simply replace the file dfu_singIe_bank.c with file dfu_dual_bank.c and you should have BLE single bank DFU. This is not official tested and released but we tested in Techsupport and it worked fine here.

Note that chip revision 2 and 3 doesn't have the difference in ROM size. You have both 128 variant and 256 variant. To check which variant your chip is, have a look here.

I'm not sure where you read that current MCP on PC doesn't support single bank update. It was but with the introduce of the init packet, it should be ok now. On the DFU master side, it's transparent that the bootloader uses single bank or dual bank.