problem with UART update on nRF52840

[ste2108]

Good morning,

in our project we would like to implement a DFU system of our Nordic 52840 through UART. In the final version of the board the 52840 will be connected to another MCU through serial, but for the moment we are updating the Nordic through a USB serial adapted connected to the rx/tx pins of the Nordic MCU and using the nrfutil.

What we observe is the following:

1) If I upload the fw through nrfutil after having loaded the SD and the BL itself, the procedure is successful in about 25 seconds

2) If I cancel the DFU procedure while it is ongoing and then I repeat it, only the first SLIP packets are exchanged and the first 4k data batch is sent. When the CRC is requested to the Nordic, no answer is apparently received and the program exits. Please see the attached log, obtained with the -v-v-v-v nrfutil option. The command I use is: 

nrfutil -v -v -v -v dfu serial -cd 1 -p COM36 -fc 0 -b 115200 -pkg NordicPackage.zip

the used zip has been signed with a proprietary private key (.pem file) and of course the bootloader has been compiled with the related public key. I believe I am safe on the public/private key side cause otherwise the first update would not be successful. We also tried the procedure with the usb-serial option, but the behaviour seems to be the same.

Can you please tell me if you have any idea on what the problem is? I would (naively?) expect that if I interrupt the UART DFU procedure in the middle I should then be able to safely repeat it.

Please find attached:

the sdk_config.h used (it has been changed wrt the original one to adapt it to the project's needs)

the aforementioned log file

Thank you.

Kind regards,

Stefano

Fullscreen DFU_failing_log.txt Download

C:\work\vdf_40170_ca\Prj\tools\App_Generator>nrfutil -v -v -v -v dfu serial -cd 1 -p COM36 -fc 0 -b 115200 -pkg P567_FPNFC_Mesh_App_0_0_0_JustNordic.zip
2023-02-17 09:03:42,181 Using board at serial port: COM36
2023-02-17 09:03:42,190 Sending Application image.
2023-02-17 09:04:13,673 SLIP: --> [9, 1]
2023-02-17 09:04:13,686 SLIP: <-- [96, 9, 1, 1]
2023-02-17 09:04:13,686 Serial: Set Packet Receipt Notification 0
2023-02-17 09:04:13,686 SLIP: --> [2, 0, 0]
2023-02-17 09:04:13,702 SLIP: <-- [96, 2, 1]
2023-02-17 09:04:13,702 SLIP: --> [7]
2023-02-17 09:04:13,718 SLIP: <-- [96, 7, 1, 131, 0]
2023-02-17 09:04:13,718 Sending init packet...
2023-02-17 09:04:13,718 Serial: Selecting Object: type:1
2023-02-17 09:04:13,719 SLIP: --> [6, 1]
2023-02-17 09:04:13,733 SLIP: <-- [96, 6, 1, 0, 2, 0, 0, 141, 0, 0, 0, 133, 3, 198, 153]
2023-02-17 09:04:13,733 Serial: Object selected:  max_size:512 offset:141 crc:2579891077
2023-02-17 09:04:13,734 SLIP: --> [4]
2023-02-17 09:04:13,749 SLIP: <-- [96, 4, 1]
2023-02-17 09:04:13,749 Sending firmware file...
2023-02-17 09:04:13,750 Serial: Selecting Object: type:2
2023-02-17 09:04:13,750 SLIP: --> [6, 2]
2023-02-17 09:04:13,766 SLIP: <-- [96, 6, 1, 0, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
2023-02-17 09:04:13,766 Serial: Object selected:  max_size:4096 offset:0 crc:0
2023-02-17 09:04:13,766 SLIP: --> [1, 2, 0, 16, 0, 0]
2023-02-17 09:04:13,781 SLIP: <-- [96, 1, 1]
2023-02-17 09:04:13,781 Serial: Streaming Data: len:4096 offset:0 crc:0x00000000
2023-02-17 09:04:13,781 SLIP: --> [8, 0, 253, 3, 32, 9, 17, 4, 0, 49, 17, 4, 0, 51, 17, 4, 0, 53, 17, 4, 0, 55, 17, 4, 0, 57, 17, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 59, 17, 4, 0, 61, 17, 4, 0, 0, 0, 0, 0, 63, 17, 4, 0, 65, 17, 4, 0]
2023-02-17 09:04:13,783 SLIP: --> [8, 67, 17, 4, 0, 67, 17, 4, 0, 101, 34, 4, 0, 65, 40, 4, 0, 67, 17, 4, 0, 67, 17, 4, 0, 177, 32, 4, 0, 133, 35, 4, 0, 67, 17, 4, 0, 53, 37, 4, 0, 137, 207, 2, 0, 67, 17, 4, 0, 67, 17, 4, 0, 67, 17, 4, 0, 67, 17, 4, 0, 67, 17, 4, 0]
2023-02-17 09:04:13,788 SLIP: --> [8, 105, 53, 4, 0, 89, 178, 3, 0, 65, 12, 3, 0, 197, 28, 4, 0, 41, 179, 3, 0, 67, 17, 4, 0, 153, 24, 4, 0, 67, 17, 4, 0, 67, 17, 4, 0, 67, 17, 4, 0, 73, 37, 4, 0, 67, 17, 4, 0, 221, 34, 4, 0, 67, 17, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0]
2023-02-17 09:04:13,794 SLIP: --> [8, 67, 17, 4, 0, 67, 17, 4, 0, 67, 17, 4, 0, 67, 17, 4, 0, 67, 17, 4, 0, 67, 17, 4, 0, 67, 17, 4, 0, 67, 17, 4, 0, 67, 17, 4, 0, 67, 17, 4, 0, 41, 180, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 67, 17, 4, 0, 0, 0, 0, 0, 67, 17, 4, 0]
2023-02-17 09:04:13,800 SLIP: --> [8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
2023-02-17 09:04:13,805 SLIP: --> [8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
2023-02-17 09:04:13,811 SLIP: --> [8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
2023-02-17 09:04:13,816 SLIP: --> [8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
2023-02-17 09:04:13,823 SLIP: --> [8, 16, 181, 5, 76, 35, 120, 51, 185, 4, 75, 19, 177, 4, 72, 175, 243, 0, 128, 1, 35, 35, 112, 16, 189, 72, 57, 0, 32, 0, 0, 0, 0, 112, 93, 5, 0, 8, 181, 3, 75, 27, 177, 3, 73, 3, 72, 175, 243, 0, 128, 8, 189, 0, 0, 0, 0, 76, 57, 0, 32, 112, 93, 5, 0]
2023-02-17 09:04:13,828 SLIP: --> [8, 21, 75, 0, 43, 8, 191, 19, 75, 157, 70, 163, 245, 128, 58, 0, 33, 139, 70, 15, 70, 19, 72, 20, 74, 18, 26, 38, 240, 145, 252, 15, 75, 0, 43, 0, 208, 152, 71, 14, 75, 0, 43, 0, 208, 152, 71, 0, 32, 0, 33, 4, 0, 13, 0, 13, 72, 0, 40, 2, 208, 12, 72, 40, 240]
2023-02-17 09:04:13,834 SLIP: --> [8, 95, 254, 38, 240, 65, 248, 32, 0, 41, 0, 33, 240, 41, 254, 38, 240, 43, 248, 0, 191, 0, 0, 8, 0, 0, 253, 3, 32, 0, 0, 0, 0, 0, 0, 0, 0, 72, 57, 0, 32, 116, 205, 0, 32, 65, 239, 4, 0, 85, 255, 4, 0, 56, 181, 4, 70, 69, 24, 172, 66, 1, 209, 0, 32]
2023-02-17 09:04:13,840 SLIP: --> [8, 5, 224, 20, 248, 1, 11, 23, 240, 41, 254, 0, 40, 245, 208, 56, 189, 56, 181, 5, 70, 12, 70, 21, 240, 65, 250, 41, 70, 21, 240, 68, 250, 160, 66, 52, 191, 0, 32, 1, 32, 56, 189, 55, 181, 13, 70, 4, 70, 104, 185, 169, 178, 0, 34, 32, 70, 1, 240, 83, 253, 1, 33, 141, 248]
2023-02-17 09:04:13,846 SLIP: --> [8, 7, 0, 13, 241, 7, 0, 255, 247, 213, 255, 3, 176, 48, 189, 255, 247, 209, 255, 0, 40, 249, 209, 236, 231, 7, 181, 12, 72, 3, 33, 255, 247, 228, 255, 11, 75, 27, 104, 91, 4, 13, 213, 10, 75, 27, 104, 3, 43, 9, 221, 9, 75, 9, 74, 211, 248, 4, 53, 9, 73, 0, 146, 4, 32]
2023-02-17 09:04:13,851 SLIP: --> [8, 87, 34, 13, 240, 59, 249, 3, 176, 93, 248, 4, 251, 68, 18, 5, 0, 224, 45, 0, 32, 220, 45, 0, 32, 0, 16, 1, 64, 194, 17, 5, 0, 180, 17, 5, 0, 1, 72, 5, 33, 255, 247, 191, 191, 71, 18, 5, 0, 7, 181, 12, 72, 3, 33, 255, 247, 184, 255, 11, 75, 27, 104, 91, 4]
2023-02-17 09:04:13,857 SLIP: --> [8, 13, 213, 10, 75, 27, 104, 3, 43, 9, 221, 9, 75, 9, 74, 211, 248, 4, 53, 9, 73, 0, 146, 4, 32, 105, 34, 13, 240, 15, 249, 3, 176, 93, 248, 4, 251, 76, 18, 5, 0, 224, 45, 0, 32, 220, 45, 0, 32, 0, 16, 1, 64, 195, 17, 5, 0, 180, 17, 5, 0, 1, 72, 3, 33]
2023-02-17 09:04:13,862 SLIP: --> [8, 255, 247, 147, 191, 79, 18, 5, 0, 31, 181, 2, 35, 141, 248, 5, 0, 141, 248, 4, 48, 56, 34, 141, 248, 10, 48, 5, 33, 189, 248, 4, 48, 173, 248, 8, 32, 2, 168, 173, 248, 11, 48, 255, 247, 126, 255, 5, 176, 93, 248, 4, 251, 21, 240, 178, 185, 8, 181, 23, 240, 183, 253, 128, 178]
2023-02-17 09:04:13,868 SLIP: --> [8, 8, 189, 7, 181, 13, 241, 7, 0, 23, 240, 114, 253, 32, 185, 157, 248, 7, 0, 3, 176, 93, 248, 4, 251, 0, 32, 250, 231, 112, 181, 13, 70, 136, 176, 20, 70, 0, 42, 69, 208, 54, 41, 39, 208, 7, 216, 1, 41, 0, 240, 140, 128, 25, 41, 117, 208, 23, 240, 74, 253, 58, 224, 55, 41]
2023-02-17 09:04:13,874 SLIP: --> [8, 58, 208, 56, 41, 248, 209, 16, 70, 0, 240, 62, 254, 196, 178, 255, 44, 72, 78, 173, 248, 20, 0, 68, 209, 51, 104, 88, 4, 42, 213, 70, 75, 27, 104, 3, 43, 38, 221, 69, 75, 69, 74, 211, 248, 4, 53, 0, 146, 156, 34, 68, 73, 4, 32, 13, 240, 161, 248, 27, 224, 17, 70, 2, 32]
2023-02-17 09:04:13,879 SLIP: --> [8, 0, 240, 92, 251, 176, 185, 59, 75, 27, 104, 93, 4, 13, 213, 58, 75, 27, 104, 3, 43, 9, 221, 57, 75, 59, 74, 211, 248, 4, 53, 0, 146, 129, 34, 56, 73, 4, 32, 13, 240, 137, 248, 23, 240, 17, 253, 0, 32, 255, 247, 50, 255, 8, 176, 112, 189, 17, 70, 3, 32, 0, 240, 62, 251]
2023-02-17 09:04:13,885 SLIP: --> [8, 0, 40, 247, 209, 43, 75, 27, 104, 92, 4, 238, 213, 42, 75, 27, 104, 3, 43, 234, 221, 41, 75, 45, 74, 211, 248, 4, 53, 0, 146, 141, 34, 223, 231, 2, 35, 173, 248, 27, 0, 5, 33, 6, 168, 141, 248, 26, 48, 173, 248, 24, 80, 255, 247, 249, 254, 51, 104, 89, 4, 218, 213, 30, 75]
2023-02-17 09:04:13,891 SLIP: --> [8, 27, 104, 3, 43, 214, 221, 157, 248, 21, 32, 28, 75, 29, 73, 211, 248, 4, 53, 205, 233, 1, 66, 30, 74, 0, 146, 4, 32, 169, 34, 13, 240, 77, 248, 199, 231, 255, 247, 109, 255, 99, 120, 131, 66, 194, 209, 17, 75, 27, 104, 90, 4, 190, 213, 16, 75, 27, 104, 3, 43, 186, 221, 15, 75]
2023-02-17 09:04:13,896 SLIP: --> [8, 20, 74, 211, 248, 4, 53, 0, 146, 179, 34, 146, 231, 255, 247, 89, 255, 99, 120, 131, 66, 174, 209, 7, 75, 27, 104, 91, 4, 170, 213, 6, 75, 27, 104, 3, 43, 166, 221, 5, 75, 11, 74, 211, 248, 4, 53, 0, 146, 188, 34, 126, 231, 224, 45, 0, 32, 220, 45, 0, 32, 0, 16, 1, 64]
2023-02-17 09:04:13,903 SLIP: --> [8, 253, 17, 5, 0, 180, 17, 5, 0, 205, 17, 5, 0, 229, 17, 5, 0, 24, 18, 5, 0, 59, 18, 5, 0, 58, 18, 5, 0, 112, 181, 14, 70, 21, 70, 0, 36, 165, 66, 6, 235, 4, 0, 2, 208, 23, 240, 160, 252, 8, 177, 160, 178, 112, 189, 1, 52, 244, 231, 8, 70, 17, 70, 8, 177]
2023-02-17 09:04:13,909 SLIP: --> [8, 255, 247, 120, 190, 112, 71, 7, 181, 141, 248, 7, 16, 13, 241, 7, 0, 1, 33, 255, 247, 111, 254, 3, 176, 93, 248, 4, 251, 23, 240, 120, 188, 31, 40, 138, 191, 5, 75, 79, 240, 160, 67, 0, 240, 31, 0, 211, 248, 16, 53, 35, 250, 0, 240, 0, 240, 1, 0, 112, 71, 0, 3, 0, 80]
2023-02-17 09:04:13,914 SLIP: --> [8, 4, 75, 26, 120, 26, 177, 152, 120, 0, 240, 1, 0, 112, 71, 1, 32, 250, 231, 0, 191, 101, 57, 0, 32, 12, 75, 27, 104, 91, 4, 7, 181, 14, 213, 11, 75, 27, 104, 3, 43, 10, 221, 10, 75, 10, 74, 211, 248, 4, 53, 10, 73, 0, 146, 4, 32, 64, 242, 63, 18, 12, 240, 190, 255]
2023-02-17 09:04:13,919 SLIP: --> [8, 7, 75, 0, 34, 90, 112, 3, 176, 93, 248, 4, 251, 224, 45, 0, 32, 220, 45, 0, 32, 0, 16, 1, 64, 121, 18, 5, 0, 102, 18, 5, 0, 101, 57, 0, 32, 112, 181, 78, 77, 44, 120, 1, 44, 136, 176, 46, 70, 52, 208, 2, 44, 58, 208, 75, 78, 52, 120, 98, 30, 1, 42, 43, 216]
2023-02-17 09:04:13,926 SLIP: --> [8, 163, 30, 92, 66, 92, 65, 3, 37, 56, 35, 141, 248, 20, 80, 141, 248, 21, 64, 173, 248, 24, 48, 2, 35, 141, 248, 26, 48, 5, 33, 189, 248, 20, 48, 173, 248, 27, 48, 6, 168, 255, 247, 31, 254, 62, 75, 27, 104, 90, 4, 15, 213, 61, 75, 27, 104, 171, 66, 11, 221, 60, 75, 61, 74]
2023-02-17 09:04:13,931 SLIP: --> [8, 211, 248, 4, 53, 60, 73, 0, 146, 205, 233, 1, 84, 177, 34, 4, 32, 12, 240, 116, 255, 0, 35, 51, 112, 8, 176, 112, 189, 2, 32, 30, 240, 71, 252, 0, 40, 199, 209, 2, 35, 43, 112, 196, 231, 30, 240, 128, 252, 0, 40, 192, 209, 49, 75, 24, 104, 154, 136, 6, 144, 155, 121, 141, 248]
2023-02-17 09:04:13,937 SLIP: --> [8, 30, 48, 32, 70, 173, 248, 28, 32, 30, 240, 184, 252, 38, 75, 0, 40, 51, 209, 43, 74, 105, 120, 146, 120, 27, 104, 145, 66, 3, 244, 128, 67, 24, 209, 107, 177, 33, 75, 27, 104, 4, 43, 9, 221, 32, 75, 37, 74, 211, 248, 4, 53, 32, 73, 0, 146, 5, 32, 130, 34, 12, 240, 62, 255]
2023-02-17 09:04:13,943 SLIP: --> [8, 0, 35, 8, 33, 6, 168, 141, 248, 30, 48, 32, 240, 177, 252, 0, 35, 51, 112, 144, 231, 123, 177, 21, 75, 27, 104, 4, 43, 11, 221, 20, 75, 211, 248, 4, 53, 205, 233, 1, 33, 23, 74, 0, 146, 18, 73, 136, 34, 5, 32, 12, 240, 35, 255, 2, 35, 227, 231, 27, 104, 89, 4, 13, 213]
2023-02-17 09:04:13,948 SLIP: --> [8, 10, 75, 27, 104, 4, 43, 9, 221, 9, 75, 16, 74, 211, 248, 4, 53, 9, 73, 0, 146, 5, 32, 143, 34, 12, 240, 16, 255, 1, 35, 208, 231, 105, 57, 0, 32, 100, 57, 0, 32, 224, 45, 0, 32, 220, 45, 0, 32, 0, 16, 1, 64, 24, 18, 5, 0, 102, 18, 5, 0, 152, 22, 5, 0]
2023-02-17 09:04:13,954 SLIP: --> [8, 213, 200, 0, 32, 159, 18, 5, 0, 183, 18, 5, 0, 235, 18, 5, 0, 45, 233, 240, 65, 5, 70, 198, 176, 12, 70, 0, 41, 0, 240, 132, 128, 68, 75, 15, 136, 26, 104, 18, 244, 128, 79, 152, 70, 23, 208, 66, 75, 27, 104, 3, 43, 19, 221, 65, 75, 138, 120, 211, 248, 4, 53, 2, 146]
2023-02-17 09:04:13,960 SLIP: --> [8, 160, 241, 54, 2, 62, 73, 210, 178, 4, 32, 81, 248, 34, 32, 1, 146, 60, 74, 0, 146, 60, 73, 64, 242, 107, 18, 12, 240, 207, 254, 55, 45, 101, 209, 163, 120, 30, 70, 0, 43, 53, 208, 216, 248, 0, 32, 82, 4, 49, 213, 49, 74, 18, 104, 3, 42, 45, 221, 3, 51, 51, 74, 128, 43]
2023-02-17 09:04:13,965 SLIP: --> [8, 40, 191, 128, 35, 210, 248, 0, 192, 32, 70, 5, 170, 3, 235, 4, 14, 16, 248, 1, 27, 79, 234, 17, 24, 1, 240, 15, 1, 28, 249, 8, 128, 130, 248, 0, 128, 28, 249, 1, 16, 81, 112, 134, 69, 2, 241, 2, 2, 238, 209, 5, 169, 0, 34, 1, 248, 19, 32, 32, 75, 36, 74, 211, 248]
2023-02-17 09:04:13,971 SLIP: --> [8, 4, 53, 1, 146, 35, 74, 2, 145, 0, 146, 31, 73, 79, 244, 185, 114, 4, 32, 12, 240, 147, 254, 179, 28, 26, 10, 141, 248, 21, 32, 141, 248, 23, 112, 5, 34, 5, 169, 0, 32, 63, 10, 141, 248, 20, 80, 141, 248, 22, 48, 141, 248, 24, 112, 255, 247, 128, 254, 0, 34, 5, 33, 5, 168]
2023-02-17 09:04:13,976 SLIP: --> [8, 1, 240, 111, 250, 5, 70, 94, 177, 3, 52, 2, 70, 49, 70, 32, 70, 1, 240, 103, 250, 50, 70, 5, 70, 33, 70, 0, 32, 255, 247, 109, 254, 41, 70, 0, 32, 255, 247, 111, 254, 70, 176, 189, 232, 240, 129, 0, 38, 209, 231, 0, 191, 224, 45, 0, 32, 220, 45, 0, 32, 0, 16, 1, 64]
2023-02-17 09:04:13,982 SLIP: --> [8, 184, 22, 5, 0, 6, 19, 5, 0, 102, 18, 5, 0, 228, 45, 0, 32, 217, 25, 5, 0, 37, 19, 5, 0, 3, 120, 2, 43, 2, 209, 64, 104, 25, 240, 219, 185, 1, 43, 250, 208, 112, 71, 0, 0, 8, 181, 33, 240, 193, 250, 3, 75, 0, 40, 20, 191, 2, 34, 1, 34, 26, 112, 8, 189]
2023-02-17 09:04:13,989 SLIP: --> [8, 100, 57, 0, 32, 14, 74, 0, 35, 50, 248, 51, 16, 129, 66, 3, 209, 2, 235, 195, 3, 88, 104, 112, 71, 1, 51, 13, 43, 244, 209, 1, 40, 8, 208, 2, 40, 8, 208, 3, 40, 8, 209, 2, 34, 5, 75, 3, 235, 194, 3, 239, 231, 0, 34, 249, 231, 1, 34, 247, 231, 2, 72, 112, 71]
2023-02-17 09:04:13,994 SLIP: --> [8, 220, 22, 5, 0, 196, 22, 5, 0, 45, 19, 5, 0, 255, 247, 22, 189, 55, 181, 20, 77, 43, 120, 19, 187, 19, 76, 163, 120, 165, 43, 19, 75, 27, 104, 12, 191, 90, 34, 165, 34, 91, 4, 162, 112, 14, 213, 16, 75, 27, 104, 4, 43, 10, 221, 15, 75, 15, 73, 211, 248, 4, 53, 1, 146]
2023-02-17 09:04:14,000 SLIP: --> [8, 14, 74, 0, 146, 5, 32, 204, 34, 12, 240, 248, 253, 163, 120, 107, 112, 1, 36, 44, 112, 255, 247, 70, 254, 32, 70, 3, 176, 48, 189, 0, 32, 251, 231, 0, 191, 105, 57, 0, 32, 213, 200, 0, 32, 224, 45, 0, 32, 220, 45, 0, 32, 0, 16, 1, 64, 102, 18, 5, 0, 63, 19, 5, 0]
2023-02-17 09:04:14,006 SLIP: --> [8, 240, 181, 57, 76, 35, 120, 135, 176, 203, 185, 98, 120, 186, 185, 227, 120, 54, 78, 12, 43, 30, 217, 51, 104, 90, 4, 14, 213, 52, 75, 27, 104, 3, 43, 10, 221, 51, 75, 52, 74, 211, 248, 4, 53, 51, 73, 0, 146, 4, 32, 79, 244, 211, 114, 12, 240, 193, 253, 1, 35, 35, 112, 0, 32]
2023-02-17 09:04:14,012 SLIP: --> [8, 1, 240, 192, 249, 16, 177, 0, 32, 1, 240, 12, 250, 255, 247, 10, 254, 7, 176, 240, 189, 1, 35, 42, 72, 99, 112, 79, 244, 0, 65, 20, 240, 33, 254, 51, 104, 39, 77, 19, 244, 128, 79, 22, 208, 32, 75, 27, 104, 3, 43, 18, 221, 226, 120, 31, 75, 5, 235, 194, 1, 53, 248, 50, 32]
2023-02-17 09:04:14,017 SLIP: --> [8, 211, 248, 4, 53, 73, 104, 1, 146, 31, 74, 2, 145, 0, 146, 27, 73, 79, 244, 216, 114, 4, 32, 12, 240, 145, 253, 51, 104, 226, 120, 91, 4, 53, 248, 50, 112, 19, 213, 18, 75, 27, 104, 3, 43, 15, 221, 5, 235, 194, 5, 16, 75, 106, 104, 211, 248, 4, 53, 1, 146, 19, 74, 0, 146]
2023-02-17 09:04:14,023 SLIP: --> [8, 14, 73, 2, 151, 79, 244, 202, 114, 4, 32, 12, 240, 119, 253, 0, 35, 5, 169, 54, 32, 141, 248, 22, 48, 173, 248, 20, 112, 255, 247, 120, 254, 227, 120, 1, 51, 227, 112, 170, 231, 101, 57, 0, 32, 224, 45, 0, 32, 220, 45, 0, 32, 0, 16, 1, 64, 98, 19, 5, 0, 102, 18, 5, 0]
2023-02-17 09:04:14,029 SLIP: --> [8, 108, 57, 0, 32, 220, 22, 5, 0, 114, 19, 5, 0, 141, 19, 5, 0, 8, 181, 7, 75, 7, 74, 8, 72, 0, 33, 25, 112, 89, 112, 217, 112, 20, 240, 174, 253, 24, 177, 189, 232, 8, 64, 25, 240, 214, 184, 8, 189, 101, 57, 0, 32, 25, 102, 2, 0, 68, 23, 5, 0, 45, 233, 240, 79]
2023-02-17 09:04:14,034 SLIP: --> [8, 4, 70, 207, 176, 13, 70, 0, 41, 0, 240, 165, 130, 131, 30, 1, 43, 0, 242, 32, 130, 75, 136, 18, 43, 1, 217, 0, 36, 8, 225, 1, 43, 26, 217, 0, 32, 255, 247, 77, 252, 105, 120, 6, 70, 1, 240, 10, 249, 104, 112, 0, 32, 173, 248, 32, 96, 255, 247, 67, 252, 105, 120, 6, 70]
2023-02-17 09:04:14,039 SLIP: --> [8, 1, 240, 0, 249, 189, 248, 32, 48, 104, 112, 67, 234, 6, 32, 107, 136, 173, 248, 32, 0, 2, 59, 107, 128, 106, 136, 114, 177, 13, 241, 34, 1, 0, 32, 255, 247, 251, 252, 107, 136, 152, 66, 1, 70, 213, 209, 106, 120, 13, 241, 34, 0, 1, 240, 245, 248, 104, 112, 0, 32, 255, 247, 33, 252]
2023-02-17 09:04:14,046 SLIP: --> [8, 107, 120, 131, 66, 201, 209, 180, 79, 181, 248, 2, 128, 59, 104, 3, 44, 3, 244, 128, 67, 62, 70, 0, 240, 125, 129, 195, 177, 175, 75, 27, 104, 3, 43, 20, 221, 189, 248, 32, 64, 173, 75, 32, 70, 211, 248, 4, 53, 5, 147, 255, 247, 167, 254, 171, 74, 1, 144, 0, 146, 205, 233, 2, 72]
2023-02-17 09:04:14,052 SLIP: --> [8, 5, 155, 169, 73, 79, 244, 24, 114, 4, 32, 12, 240, 215, 252, 167, 76, 111, 136, 1, 35, 163, 112, 51, 104, 3, 244, 128, 67, 0, 47, 64, 240, 222, 128, 187, 177, 157, 75, 27, 104, 3, 43, 19, 221, 189, 248, 32, 80, 155, 75, 40, 70, 211, 248, 4, 53, 5, 147, 255, 247, 131, 254, 156, 74]
2023-02-17 09:04:14,057 SLIP: --> [8, 0, 146, 205, 233, 1, 5, 5, 155, 151, 73, 64, 242, 5, 34, 4, 32, 12, 240, 180, 252, 189, 248, 32, 0, 6, 169, 30, 240, 123, 248, 0, 40, 89, 209, 51, 104, 157, 248, 26, 128, 189, 248, 24, 80, 88, 4, 193, 70, 35, 213, 223, 248, 40, 162, 218, 248, 0, 48, 3, 43, 29, 221, 223, 248]
2023-02-17 09:04:14,063 SLIP: --> [8, 32, 178, 40, 70, 219, 248, 4, 53, 5, 147, 255, 247, 91, 254, 137, 74, 5, 155, 1, 144, 0, 146, 205, 233, 2, 88, 131, 73, 64, 242, 221, 18, 4, 32, 12, 240, 139, 252, 51, 104, 205, 248, 20, 176, 19, 244, 128, 79, 3, 208, 218, 248, 0, 48, 3, 43, 94, 220, 54, 35, 141, 248, 52, 48]
2023-02-17 09:04:14,069 SLIP: --> [8, 9, 241, 2, 3, 27, 10, 141, 248, 55, 80, 5, 34, 45, 10, 13, 169, 0, 32, 8, 241, 2, 8, 141, 248, 53, 48, 141, 248, 56, 80, 141, 248, 54, 128, 255, 247, 106, 252, 0, 34, 5, 33, 13, 168, 1, 240, 89, 248, 5, 70, 185, 241, 0, 15, 10, 208, 2, 70, 73, 70, 7, 152, 1, 240]
2023-02-17 09:04:14,075 SLIP: --> [8, 80, 248, 7, 153, 5, 70, 74, 70, 0, 32, 255, 247, 86, 252, 41, 70, 0, 32, 255, 247, 88, 252, 0, 37, 148, 248, 0, 128, 184, 241, 0, 15, 32, 209, 255, 177, 227, 120, 100, 74, 1, 59, 50, 248, 51, 32, 189, 248, 32, 48, 154, 66, 22, 209, 97, 72, 20, 240, 0, 253, 51, 104, 132, 248]
2023-02-17 09:04:14,080 SLIP: --> [8, 1, 128, 89, 4, 14, 213, 85, 75, 27, 104, 3, 43, 10, 221, 84, 75, 91, 74, 211, 248, 4, 53, 84, 73, 0, 146, 4, 32, 64, 242, 57, 18, 12, 240, 44, 252, 0, 45, 0, 240, 148, 128, 80, 75, 0, 36, 156, 112, 32, 70, 79, 176, 189, 232, 240, 143, 82, 75, 7, 154, 211, 248, 0, 224]
2023-02-17 09:04:14,085 SLIP: --> [8, 184, 241, 128, 15, 196, 70, 13, 171, 40, 191, 79, 240, 128, 12, 12, 235, 2, 10, 24, 70, 146, 69, 3, 241, 2, 3, 17, 209, 0, 35, 0, 248, 28, 48, 5, 155, 72, 74, 211, 248, 4, 53, 1, 146, 71, 74, 2, 144, 0, 146, 61, 73, 79, 244, 239, 114, 4, 32, 12, 240, 255, 251, 124, 231]
2023-02-17 09:04:14,092 SLIP: --> [8, 18, 248, 1, 27, 79, 234, 17, 27, 1, 240, 15, 1, 30, 249, 11, 176, 3, 248, 2, 188, 30, 249, 1, 16, 3, 248, 1, 28, 218, 231, 27, 179, 223, 248, 184, 144, 217, 248, 0, 48, 3, 43, 29, 221, 189, 248, 32, 128, 43, 77, 64, 70, 213, 248, 4, 53, 5, 147, 255, 247, 163, 253, 52, 74]
2023-02-17 09:04:14,097 SLIP: --> [8, 5, 155, 1, 144, 205, 233, 2, 135, 0, 146, 39, 73, 79, 244, 4, 114, 4, 32, 12, 240, 211, 251, 51, 104, 19, 244, 128, 79, 168, 70, 3, 208, 217, 248, 0, 48, 3, 43, 5, 220, 57, 70, 8, 168, 30, 240, 188, 251, 5, 70, 113, 231, 35, 75, 186, 28, 211, 248, 0, 192, 128, 42, 13, 171]
2023-02-17 09:04:14,103 SLIP: --> [8, 40, 191, 128, 34, 13, 241, 32, 14, 0, 32, 29, 70, 30, 248, 1, 27, 79, 234, 17, 25, 1, 240, 15, 1, 28, 249, 9, 144, 131, 248, 0, 144, 1, 48, 28, 249, 1, 16, 89, 112, 130, 66, 3, 241, 2, 3, 237, 209, 0, 35, 5, 248, 18, 48, 20, 74, 216, 248, 4, 53, 1, 146, 19, 74]
2023-02-17 09:04:14,109 SLIP: --> [8, 0, 146, 9, 73, 2, 149, 64, 242, 17, 34, 4, 32, 12, 240, 150, 251, 202, 231, 165, 112, 1, 36, 107, 231, 224, 45, 0, 32, 220, 45, 0, 32, 0, 16, 1, 64, 174, 19, 5, 0, 102, 18, 5, 0, 101, 57, 0, 32, 228, 19, 5, 0, 13, 20, 5, 0, 220, 22, 5, 0, 108, 57, 0, 32]
2023-02-17 09:04:14,114 SLIP: --> [8, 99, 20, 5, 0, 228, 45, 0, 32, 217, 25, 5, 0, 37, 19, 5, 0, 50, 20, 5, 0, 27, 179, 223, 248, 232, 145, 217, 248, 0, 48, 3, 43, 29, 221, 189, 248, 32, 64, 109, 78, 32, 70, 214, 248, 4, 53, 5, 147, 255, 247, 40, 253, 106, 74, 5, 155, 1, 144, 0, 146, 205, 233, 2, 72]
2023-02-17 09:04:14,120 SLIP: --> [8, 104, 73, 79, 244, 27, 114, 4, 32, 12, 240, 88, 251, 59, 104, 19, 244, 128, 79, 180, 70, 3, 208, 217, 248, 0, 48, 3, 43, 13, 220, 98, 78, 105, 136, 1, 36, 8, 168, 180, 112, 30, 240, 62, 251, 0, 40, 127, 244, 28, 175, 176, 112, 255, 247, 28, 250, 26, 231, 107, 136, 91, 74, 2, 51]
2023-02-17 09:04:14,126 SLIP: --> [8, 20, 104, 128, 43, 13, 170, 40, 191, 128, 35, 8, 174, 0, 32, 23, 70, 22, 248, 1, 27, 79, 234, 17, 30, 1, 240, 15, 1, 20, 249, 14, 224, 130, 248, 0, 224, 1, 48, 97, 86, 81, 112, 131, 66, 2, 241, 2, 2, 238, 209, 0, 34, 7, 248, 19, 32, 77, 74, 220, 248, 4, 53, 1, 146]
2023-02-17 09:04:14,131 SLIP: --> [8, 76, 74, 0, 146, 71, 73, 2, 151, 64, 242, 109, 34, 4, 32, 12, 240, 21, 251, 196, 231, 144, 179, 1, 40, 127, 244, 223, 173, 223, 248, 28, 129, 216, 248, 0, 48, 91, 4, 36, 213, 223, 248, 20, 145, 217, 248, 0, 48, 3, 43, 30, 221, 14, 136, 57, 79, 48, 70, 215, 248, 4, 53, 5, 147]
2023-02-17 09:04:14,137 SLIP: --> [8, 255, 247, 192, 252, 170, 120, 5, 155, 1, 144, 205, 233, 2, 98, 58, 74, 0, 146, 52, 73, 64, 242, 147, 34, 4, 32, 12, 240, 239, 250, 216, 248, 0, 48, 19, 244, 128, 79, 188, 70, 3, 208, 217, 248, 0, 48, 3, 43, 36, 220, 41, 70, 55, 32, 255, 247, 235, 251, 185, 230, 47, 75, 27, 104]
2023-02-17 09:04:14,144 SLIP: --> [3]
Traceback (most recent call last):
  File "C:\Users\uPD008\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\Scripts\nrfutil-script.py", line 33, in <module>
    sys.exit(load_entry_point('nrfutil==6.1.3', 'console_scripts', 'nrfutil')())
  File "C:\Users\uPD008\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\click\core.py", line 1128, in __call__
    return self.main(*args, **kwargs)
  File "C:\Users\uPD008\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\click\core.py", line 1053, in main
    rv = self.invoke(ctx)
  File "C:\Users\uPD008\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\click\core.py", line 1659, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "C:\Users\uPD008\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\click\core.py", line 1659, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "C:\Users\uPD008\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\click\core.py", line 1395, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "C:\Users\uPD008\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\click\core.py", line 754, in invoke
    return __callback(*args, **kwargs)
  File "C:\Users\uPD008\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\nordicsemi\__main__.py", line 1063, in serial
    do_serial(package, port, connect_delay, flow_control, packet_receipt_notification, baud_rate, serial_number, True,
  File "C:\Users\uPD008\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\nordicsemi\__main__.py", line 980, in do_serial
    dfu.dfu_send_images()
  File "C:\Users\uPD008\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\nordicsemi\dfu\dfu.py", line 127, in dfu_send_images
    self._dfu_send_image(self.manifest.application)
  File "C:\Users\uPD008\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\nordicsemi\dfu\dfu.py", line 100, in _dfu_send_image
    self.dfu_transport.send_firmware(data)
  File "C:\Users\uPD008\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\nordicsemi\dfu\dfu_transport_serial.py", line 301, in send_firmware
    response['crc'] = self.__stream_data(data=data, crc=response['crc'], offset=i)
  File "C:\Users\uPD008\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\nordicsemi\dfu\dfu_transport_serial.py", line 474, in __stream_data
    response = self.__calculate_checksum()
  File "C:\Users\uPD008\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\nordicsemi\dfu\dfu_transport_serial.py", line 412, in __calculate_checksum
    raise NordicSemiException('Did not receive checksum response from DFU target. '
pc_ble_driver_py.exceptions.NordicSemiException: Did not receive checksum response from DFU target. If MSD is enabled on the target device, try to disable it ref. https://wiki.segger.com/index.php?title=J-Link-OB_SAM3U

7282.sdk_config.h

[Hung Bui]

Hi Stefano, 

As far as I know nrfutil doesn't have the feature to continue DFU update after interrupted. The documentation here mentioned about that the DFU master can start by select the last object was sent and can determine that it should re-send the object or continue with the new object. 
But this feature is not implemented in nrfutil. 

From the log you provided nrfutil simply send a new init packet (initialize packet ) for a new DFU update. The problem here is that the bootloader is still in the process of the interrupted DFU update. I would assume that it wouldn't expect the init packet and didn't response to the init packet send request. 

So in your case if you are planning to make your own DFU master then you can implement this feature to continue DFU update after interrupted (you can refer to our BLE DFU library on the phone that you can find inside nRF Toolbox or nRF Device Firmware Update. As far as I know the feature to continue after interrupted is implemented on the apps. 

Another option is to send an abort command (0x0C) to reset the bootloader and start a new DFU update. I don't think we have the feature implemented on nrfutil neither. The solution is do a power/pin reset on the board after you have an interrupted DFU update. 

[ste2108]

Dear Hung Bui,

Thank you for your quick answer. Trying to understand which is the last unsent packet and restart the update from there can be tricky and we don't want to do that. However, the problem I described in my message takes place not only if I perform an update attempt (through nrfutil) immediately after I cancelled the ongoing one, but also if I stop the update, switch the board off/on and then perform the second DFU attempt. In our custom board we perform a board reset each time we attempt a DFU (because we need to send the board in DFU mode from the application fw) and the result is the same as the one observed on the Nordic updated through nrfutil and connected straight to a serial adapter
Do you have some other ideas on why this happens? Could you do a quick test on your side (it takes justa  couple of minutes) to confirm if you see the same behaviour? 

Thanks.

Kind regards,

Stefano

[ste2108]

In addition I am experiencing serious problems debugging the bootloader. I can start the debug session (breakpoint at the beginning of main) and I set a bp in the function you pointed out, but when I let the bl run and I start the update process the debug session sistematically returns a series of errors in reading registers and I have to restart it. Is there some register that I can read, e.g. using nrfjpog, whose value can shed some light on why the interrupted update is not working?
Thanks.

Regards,

Stefano

[Hung Bui]

Hi Stefano, 

To be able to debug the bootloader, you should use the debug version of the bootloader, not the project  without "debug". The one without "debug" is optimized and you can't step in the code. Make sure you erase the chip before flashing the debug version because it needs to re-write the UICR. 

Please let me know which hardware board you are using for testing my firmware.

[ste2108]

Hello Hung Bui,

I am using our proprietary board mounting a Nrf52840, connected to a PC with a serial adapter (FTDI FT232RL chip). This is the same configuration under which the (uninterrupted) update works. I can try with your board and I am sure that the combination of the Nordic dev board and your fw will work, but I am not sure this can help much in solving the problem I see. 

[Hung Bui]

Hi Stefano, 

If your board uses different UART pins then of course the hex file I provided will not work. But I would strongly suggest to try testing on a DK to align what we have with the DK before testing with your board. 
I did a quick test here without flow control and it also worked after the interruptions. 

[ste2108]

Dear Hung Bui,

Thank you for your answer and sorry for being late, I was away a few days.
I performed the test you asked on the dev board and indeed when the nrfutil process is killed and subsequently restarted the update restarts where it was interrupted and is finalized.
What I did subsequently was to compare my sdk_config.h with the one of the official signed serial bootloader (v. 16.0.0). I realigned the defines to the latter version as much as I could (you may remember that we also need the combined BLE bootloader, so all the related BLE defines must be there). After the realignment, an update through nrfutil with a serial adapter connected directly to our board works almost perfectly. That "almost" refer to the fact that, from time to time, I get what is shown in the picture: there I started the update through nrfutil, killed it (at 16%) and then restarted: the update continued where it was stopped. However, when I killed (at 52%) and restarted nrfutil again, it crashed because the continued update started where the first (at about 16%) and not the second (at 52%) nrfutil was stopped. If one looks at the logs, this corresponds to the firmware providing the first offset, as if the second one (i.e. the one corresponding to 52% advancement) was not written in flash when nrfutil was killed the second time.
This looks actually the same way in which the update on our full board (i.e. the Nordic connected to another MCU) fails: when we kill the update and then restart it, the offset provided by the MCU is always 0 (i.e. the beginning of the flash space reserved to the firmware image), thus ignoring what was written up to then.
Can you please tell me how/where this offset is written in flash and let me know if you have any idea on why sometimes it doesn't seem to be written (rarely with nrfutil, sistematically in our custom update) when we kill the update process?
Many thanks.
Regards,

Stefano

[ste2108]

Just an addendum: I also tried to start the update of our Nordic board with nrfutil and the serial adapter and to unplug the serial adapter instead of killing by ctrl-c. If I restart nrfutil, the update crashes as the offset is still the old one (i.e. 0x0000).
It looks like the update sistematically starts where it was interrupted by requiring the offset related to the last written data (which is of course 0x0000 when the update starts from scratch). Is there a way to always require an update from scratch, maybe by setting some sdk_config define? This would possibily solve our problem since we do not really care about saving time...
Thanks.
Regards,

Stefano  

[Hung Bui]

Hi Stefano, 

From what I can find in the code, if you set NRF_DFU_SAVE_PROGRESS_IN_FLASH to 0 the progress will only be stored in RAM: 

// <q> NRF_DFU_SAVE_PROGRESS_IN_FLASH - Save DFU progress in flash.

// <i> Save DFU progress to flash so that it can be resumed if interrupted, instead of being restarted.
// <i> Keep this setting disabled to maximize transfer speed and minimize flash wear.
// <i> The init packet is always saved in flash, regardless of this setting.

#ifndef NRF_DFU_SAVE_PROGRESS_IN_FLASH
#define NRF_DFU_SAVE_PROGRESS_IN_FLASH 0
#endif

Here is what I find in nrf_dfu_req_handler.c: 

So if you set the configuration to 0, the bootloader will store to flash when the whole image is stored. So if you trigger a reset on the DFU target either soft reset or pin/power reset, you should be able to clear the progress. 

However, the init packet progress will always be stored: 

So if you want to avoid the nrfutil to recover and continue (at least the init packet) from the previous failed DFU update, I would suggest to look at this line: https://github.com/NordicSemiconductor/pc-nrfutil/blob/master/nordicsemi/dfu/dfu_transport_serial.py#L250

If we remove the try_to_recover() or change it to always return false, I believe that nrfutil will always start sending as new image and will not try to continue from where it stopped. 

[ste2108]

Dear Hung Bui,

Thanks so much for your help throughout all this thread. In the end the best way for us to implement what you advised in your last message within our code (which does in c exactly what nrfutil does in python) was to ignore the offset and crc returned by the firmware and set both to 0. In this way when the update is restarted after an interruption everything is sent from scratch and the update is successful.

Kind regards,

Stefano