dfu_dual_bank_ble

[mac]

we use the dfu_dual_bank_ble example as our boot loader. We are currently using an 81522 AA part and the boot loader works well.We have recently moved to the 81522AC part and the boot loader no longer works. Has the dfu_dual_bank_ble example changed for the new part?

[Hung Bui]

Hi Mac, Which S110 version are you testing ? On earlier version than v7.1 the softdevice won't support memory address outside of the range of 16KB. Could you take a screenshot of the project setting where IRAM1 is configured ? Other than RAM size the nRF51822AA and nRF51822AC should be identical.

[mac]

IRam1 is 0x20002000 0x8000, IROM1 is 0x3c800 0x3400 Startup radio button is active. Both IRAM1 and IROM1 default checkboxes are checked.

[mac]

We are running SD 5.2.1 our plan is to get the SD, our application, and boot loader running on the AC part before migrating to a newer softDevice

[mac]

using android nrftoolbox DFU application I can see text "DFU Starting" then gatt error(133).

[Hung Bui]

@mac: IRAM1 size of 0x8000 caused the issue, please revert it back to 0x2000 as on the nRF51822 AA chip (8kB is ussed by Softdevice, 8kB left for application). S110 v5.2.1 won't support 32kB RAM.