Application with SoftDevice have to put at address 0x14000?

RE: Application with SoftDevice have to put at address 0x14000?

Ole Morten — Tue, 12 Nov 2013 17:48:40 GMT

That's actually a neat trick. If you want to have a look at an application doing interrupt forwarding, you can have a look at the code available here, although it isn't an official Nordic example: https://github.com/hlnd/nrf51-ble-bootloader

RE: Application with SoftDevice have to put at address 0x14000?

Guest — Wed, 06 Nov 2013 00:57:29 GMT

Hi Ole,

I just copied App2 application vector to 0x14000, then interrupts passed to App2. It looks work fine.

thanks,

RE: Application with SoftDevice have to put at address 0x14000?

Bastiaan — Wed, 06 Nov 2013 00:57:29 GMT

Hi Ole,

I just copied App2 application vector to 0x14000, then interrupts passed to App2. It looks work fine.

thanks,

RE: Application with SoftDevice have to put at address 0x14000?

Guest — Tue, 05 Nov 2013 18:42:05 GMT

solved this problem by manually copying application vector of app2 to 0x14000. The interrupts are forwarded to app2.

thanks,

RE: Application with SoftDevice have to put at address 0x14000?

Bastiaan — Tue, 05 Nov 2013 18:42:05 GMT

solved this problem by manually copying application vector of app2 to 0x14000. The interrupts are forwarded to app2.

thanks,

RE: Application with SoftDevice have to put at address 0x14000?

Bastiaan — Mon, 04 Nov 2013 21:04:19 GMT

Hi Ole,

Thank you for the suggestions! Actually we used to put out bootloader at 0x14000, but failed to forward interrupts from SoftDevice to Apps. I am pretty interested in your "Edit 2". Could you give me an example how to manually interrupts to the application is running? This probably better solution. if we have to change UICR, could you please give me an example how to erase the page?

thanks,

RE: Application with SoftDevice have to put at address 0x14000?

Guest — Mon, 04 Nov 2013 21:04:19 GMT

Hi Ole,

thanks,

RE: Application with SoftDevice have to put at address 0x14000?

Ole Morten — Mon, 04 Nov 2013 14:14:22 GMT

As Asbjørn says, the application has to be located at 0x14000 when using the S110. I would not recommend you to ever erase UICR while in the field, since this may leave the device permanently unusable if power is lost at a bad time.

However, this reply contains a little information that may be helpful for implementing a scenario similar to the one you request.

Edit: Sorry, didn't notice that you were the one asking the other question. However, there isn't really any magic way to achieve exactly what you want. When the S110 is programmed it will set CLENR0 to 0x14000, and to change that you have to first erase UICR. As I mention above, this is dangerous to do in the field, since a power loss right after having erased it will brick your device.

Edit 2: Another option could be to put your bootloader at 0x14000, and make it forward the interrupts manually to whatever application is running. This would increase the interrupt latency a little, but would avoid any flash write or erases while running. This bootloader implements this scheme, so it might be useful as inspiration.

RE: Application with SoftDevice have to put at address 0x14000?

zhijun lu — Fri, 01 Nov 2013 22:15:24 GMT

Thanks, but how can we set the register CLENR0 to other address, like 0x27400? looks UICR (from 0x10001000) page is written and erasing protected. I tried to change the value in CLENR0 (0x10001000), but even can't erase the page. We have to run two application with one boot loader to choose which one need work. Thanks,

RE: Application with SoftDevice have to put at address 0x14000?

Asbjørn Sæbø — Fri, 01 Nov 2013 10:04:32 GMT

The application must be put at the address specified in the CLENR0 register, that is, directly after the SoftDevice.