Hi everyone, I am attempting to integrate buttonless secure DFU into my existing firmware application. I am following this guide: https://content.u-blox.com/sites/default/files/Add-NordicSemiconductorDFU-to-SDKexample_AppNote_UBX-19050198.pdf
I am using SDK 15.2 and intend to deploy this application onto nRF52810, but am using nRF 52 DK for development purposes. When I load only the secure bootloader and softdevice S112 onto my nRF52 DK, from the dfu example ($/examples/dfu/secure_bootloader/pca10040e_ble), I have no problems. I can find the nRF52 DK advertising as dfuTarg, I can connect to it, and then I can do a DFU update using the default unedited "ble_app_uart" example, zipped up with the appropriate private key using nrfutils.
When I use my own custom firmware application that is extended from the defualt ble_app_uart template, zip it up using nrfutils and then try to update using DFU, I get the error "Insufficient resources" and I cannot update the firmware.
The default ble_app_uart project builds with 126.2 / 192KB flash and 17.2 / 24KB RAM. My custom application builds with 163.9 / 192KB flash and 18.2 / 24KB RAM.
What is the minimum required free flash and/or ram to work with DFU? Do I need to optimize my firmware so that there is enough space to perform DFU, or am I doing something else wrong?
Thanks!
err
File Name: test_app_v10.zip Parts: 1 Size: 65 KB Soft Device Size: Zero KB Bootloader Size: Zero KB [Callback] Central Manager did update state to: Powered ON Connecting to DfuTarg... centralManager.connect(peripheral, options: nil) [Callback] Central Manager did connect peripheral Connected to DfuTarg Discovering services... peripheral.discoverServices(nil) Services discovered Starting Secure DFU... Connected to DfuTarg Services discovered Secure DFU Service found Discovering characteristics in DFU Service... peripheral.discoverCharacteristics(nil, for: FE59) DFU characteristics discovered MTU set to 247 Enabling notifications for 8EC90001-F315-4F60-9FB8-838830DAEA50... peripheral.setNotifyValue(true, for: 8EC90001-F315-4F60-9FB8-838830DAEA50) Notifications enabled for 8EC90001-F315-4F60-9FB8-838830DAEA50 Secure DFU Control Point notifications enabled Writing to characteristic 8EC90001-F315-4F60-9FB8-838830DAEA50... peripheral.writeValue(0x0601, for: 8EC90001-F315-4F60-9FB8-838830DAEA50, type: .withResponse) Data written to 8EC90001-F315-4F60-9FB8-838830DAEA50 Notification received from 8EC90001-F315-4F60-9FB8-838830DAEA50, value (0x): 600601000100008e0000008672ebd1 Command object info (Max size = 256, Offset = 142, CRC = D1EB7286) received Writing to characteristic 8EC90001-F315-4F60-9FB8-838830DAEA50... peripheral.writeValue(0x01018e000000, for: 8EC90001-F315-4F60-9FB8-838830DAEA50, type: .withResponse) Data written to 8EC90001-F315-4F60-9FB8-838830DAEA50 Notification received from 8EC90001-F315-4F60-9FB8-838830DAEA50, value (0x): 600101 Writing to characteristic 8EC90001-F315-4F60-9FB8-838830DAEA50... peripheral.writeValue(0x020000, for: 8EC90001-F315-4F60-9FB8-838830DAEA50, type: .withResponse) Data written to 8EC90001-F315-4F60-9FB8-838830DAEA50 Notification received from 8EC90001-F315-4F60-9FB8-838830DAEA50, value (0x): 600201 Packet Receipt Notif disabled (Op Code = 2, Value = 0) Writing to characteristic 8EC90002-F315-4F60-9FB8-838830DAEA50... peripheral.writeValue(0x128b010a450801124108db4f10341a02b00120002800300038b8ff03422408031220db43cc45a6468084fe7c6df722c0b203200c5cc67e9614ff26717010abdbb40a480052040801120010001a402578b3009e2a2cc2f913b01300163f31d797670239810eeee2b78adc6ca16d7ac4dae624f77e90ee3c713e772b8f0a43b0083620d886c3a0a49c91b2b2593b65, for: 8EC90002-F315-4F60-9FB8-838830DAEA50, type: .withoutResponse) Command object sent (CRC = 1BB50FF8) Writing to characteristic 8EC90001-F315-4F60-9FB8-838830DAEA50... peripheral.writeValue(0x03, for: 8EC90001-F315-4F60-9FB8-838830DAEA50, type: .withResponse) Data written to 8EC90001-F315-4F60-9FB8-838830DAEA50 Notification received from 8EC90001-F315-4F60-9FB8-838830DAEA50, value (0x): 6003018e000000f80fb51b Checksum (Offset = 142, CRC = 1BB50FF8) received Writing to characteristic 8EC90001-F315-4F60-9FB8-838830DAEA50... peripheral.writeValue(0x04, for: 8EC90001-F315-4F60-9FB8-838830DAEA50, type: .withResponse) Data written to 8EC90001-F315-4F60-9FB8-838830DAEA50 Notification received from 8EC90001-F315-4F60-9FB8-838830DAEA50, value (0x): 600404 Error 4: Insufficient resources Disconnecting... centralManager.cancelPeripheralConnection(peripheral) [Callback] Central Manager did disconnect peripheral Disconnected
