DFU with Android 7.0 fails on connection

RE: DFU with Android 7.0 fails on connection

David K. — Thu, 14 Sep 2017 14:00:47 GMT

Dear Sigurd,

We have moved one step forward...

Connection is now possible, but DFU fails after "first packet" is transfered.

Here is the log from NRF Connect :

E 15:53:14.936 [DFU] Remote DFU error: REMOTE DFU OPERATION FAILED V 15:53:14.936 [DFU] Disconnecting... D 15:53:14.987 [DFU] gatt.disconnect() I 15:53:14.987 [DFU] Disconnected

And here is the log on the ble module side :

BOOT:INFO:Received select object

:INFO:Valid Command: NRF_DFU_OBJECT_OP_SELECT

BOOT:INFO:Sending Object Info: [0x60, 0x06, 0x01 max: 0:x00000100 0:x00000000, CRC:0x00000000]

BOOT:DEBUG:timer 1

BOOT:INFO:Set receipt notif

BOOT:INFO:Sending Response: [0x2, 0x1]

BOOT:INFO:Received create object

:INFO:Before OP create command

:INFO:Valid Command Create

BOOT:INFO:Sending Response: [0x1, 0x1]

BOOT:DEBUG:timer 1

:INFO:Before OP write command

...

BOOT:INFO:Received calculate CRC

:INFO:Valid Command CRC

BOOT:INFO:Sending CRC: [0x60, 0x03, 0x01, 0:x00000087, CRC:0x24bacb5d]

BOOT:DEBUG:timer 1

BOOT:INFO:Received execute object

:INFO:Before OP execute command

:INFO:Valid command execute

:INFO:12 84 01 0A 3E 08 01 12 3A 08 05 10 34 1A 02 8C ....>...:...4...

...

BOOT:INFO:BLE_GAP_EVT_DISCONNECTED

Hope that will lead to other good advices..

Regards,

David

Edit 1 : This error also happens with Android 5.0.1 (which somehow is my reference)...

Edit 2 : It might be a sd-req issue when generating the new dfu zip. Searching that direction.

Edit 3 : It was the sd-req option in the NRFUtils. So problem solved.

Thanks again.

RE: DFU with Android 7.0 fails on connection

David K. — Thu, 14 Sep 2017 12:29:00 GMT

Hoooho,

Thanks a lot. I'll try before 5:00PM and let you know by then. Cheers,

David

RE: DFU with Android 7.0 fails on connection

Sigurd — Thu, 14 Sep 2017 12:02:28 GMT

Hi,

The Samsung A-series phone have several bugs with how they do LL control procedures as mentioned in this post.

But first, let's try to disable the DLE feature completely, and see if that makes any difference:

Add

err_code = sd_ble_opt_set(BLE_GAP_OPT_DLE_DISABLE, &opt);
APP_ERROR_CHECK(err_code);

in the buttom of the data_len_ext_set() function. data_len_ext_set() should then look like this:

void data_len_ext_set(void)
{
    ret_code_t err_code;
    ble_opt_t  opt;

    memset(&opt, 0x00, sizeof(opt));

    opt.gap_opt.ext_len.rxtx_max_pdu_payload_size = 0;



    err_code = sd_ble_opt_set(BLE_GAP_OPT_EXT_LEN, &opt);
    APP_ERROR_CHECK(err_code);

    err_code = sd_ble_opt_set(BLE_GAP_OPT_DLE_DISABLE, &opt);
    APP_ERROR_CHECK(err_code);
}