On a 52811, SD s112 v7.0.1, we get a disconnection during DFU upload, and the DFU fails.
Excerpt:
A 17:17:53.330 [DFU] Data object (2/14) created D 17:17:53.330 [DFU] wait(400) A 17:17:53.731 [DFU] Uploading firmware... V 17:17:53.731 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50... V 17:17:53.795 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50 D 17:17:53.795 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50) E 17:17:59.426 [DFU] Device has disconnected D 17:17:59.426 [DFU] gatt.disconnect() D 17:17:59.433 [DFU] gatt.close() V 17:17:59.446 [DFU] DFU service started I 17:17:59.449 [DFU] Firmware file opened successfully
I don't understand what happens
Full log :
nRF Connect, 2023-01-27 E6DE1492AB6 (E6:DE:14:92:AB:6C) V 17:17:32.037 Connecting to E6:DE:14:92:AB:6C... D 17:17:32.037 gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferred PHY = LE 1M) D 17:17:32.265 [Callback] Connection state changed with status: 0 and new state: CONNECTED (2) I 17:17:32.265 Connected to E6:DE:14:92:AB:6C V 17:17:32.271 Discovering services... D 17:17:32.271 gatt.discoverServices() I 17:17:32.271 MTU changed to: 40 V 17:17:32.283 Discovering services... D 17:17:32.283 gatt.discoverServices() I 17:17:32.758 Connection parameters updated (interval: 7.5ms, latency: 0, timeout: 5000ms) D 17:17:33.145 [Callback] Services discovered with status: 0 I 17:17:33.145 Services discovered V 17:17:33.149 Generic Access (0x1800) - Device Name [R W] (0x2A00) - Appearance [R] (0x2A01) - Peripheral Preferred Connection Parameters [R] (0x2A04) - Central Address Resolution [R] (0x2AA6) Generic Attribute (0x1801) - Service Changed [I] (0x2A05) Client Characteristic Configuration (0x2902) Unknown Service (a7630001-f491-4f21-95ea-846ba586e361) - Unknown Characteristic [W WNR] (a7630002-f491-4f21-95ea-846ba586e361) - Unknown Characteristic [N R] (00000004-0000-1000-8000-00805f9b34fb) Client Characteristic Configuration (0x2902) - Unknown Characteristic [N] (a7630003-f491-4f21-95ea-846ba586e361) Client Characteristic Configuration (0x2902) Secure DFU Service (0xFE59) - Buttonless DFU [I W] (8ec90003-f315-4f60-9fb8-838830daea50) Client Characteristic Configuration (0x2902) Battery Service (0x180F) - Battery Level [N R] (0x2A19) Client Characteristic Configuration (0x2902) Device Information (0x180A) - Manufacturer Name String [R] (0x2A29) - Model Number String [R] (0x2A24) - Serial Number String [R] (0x2A25) - Firmware Revision String [R] (0x2A26) - Software Revision String [R] (0x2A28) D 17:17:33.149 gatt.setCharacteristicNotification(00002a05-0000-1000-8000-00805f9b34fb, true) D 17:17:33.152 gatt.setCharacteristicNotification(00000004-0000-1000-8000-00805f9b34fb, true) D 17:17:33.153 gatt.setCharacteristicNotification(a7630003-f491-4f21-95ea-846ba586e361, true) D 17:17:33.153 gatt.setCharacteristicNotification(00002a19-0000-1000-8000-00805f9b34fb, true) I 17:17:33.252 Connection parameters updated (interval: 45.0ms, latency: 0, timeout: 5000ms) I 17:17:42.392 PHY updated (TX: LE 2M, RX: LE 2M) V 17:17:43.052 [DFU] DFU service started V 17:17:43.052 [DFU] Opening file... I 17:17:44.438 [DFU] Firmware file opened successfully V 17:17:44.438 [DFU] Connecting to DFU target... D 17:17:44.439 [DFU] gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferredPhy = LE_1M | LE_2M) I 17:17:44.455 [DFU] Connected to E6:DE:14:92:AB:6C V 17:17:44.456 [DFU] Discovering services... D 17:17:44.456 [DFU] gatt.discoverServices() I 17:17:44.459 [DFU] Services discovered D 17:17:44.467 [DFU] wait(1000) W 17:17:45.474 [DFU] Application with buttonless update found V 17:17:45.474 [DFU] Jumping to the DFU Bootloader... V 17:17:45.474 [DFU] Enabling indications for 8ec90003-f315-4f60-9fb8-838830daea50 D 17:17:45.474 [DFU] gatt.setCharacteristicNotification(8ec90003-f315-4f60-9fb8-838830daea50, true) D 17:17:45.474 [DFU] gatt.writeDescriptor(00002902-0000-1000-8000-00805f9b34fb, value=0x02-00) I 17:17:45.539 [DFU] Data written to descr.8ec90003-f315-4f60-9fb8-838830daea50, value (0x): 02-00 V 17:17:45.539 [DFU] Notifications enabled for 8ec90003-f315-4f60-9fb8-838830daea50 A 17:17:45.539 [DFU] Indications enabled D 17:17:45.539 [DFU] wait(1000) V 17:17:46.565 [DFU] Writing to characteristic 8ec90003-f315-4f60-9fb8-838830daea50 D 17:17:46.565 [DFU] gatt.writeCharacteristic(8ec90003-f315-4f60-9fb8-838830daea50) I 17:17:46.625 [DFU] Notification received from 8ec90003-f315-4f60-9fb8-838830daea50, value (0x): 20-01-01 A 17:17:46.625 [DFU] Enter bootloader sent (Op Code = 1) A 17:17:46.625 [DFU] Response received (Op Code = 1, Status = 1) D 17:17:46.626 [DFU] gatt.refresh() (hidden) D 17:17:46.628 [DFU] gatt.disconnect() D 17:17:46.630 [DFU] gatt.close() V 17:17:46.631 [DFU] Scanning for the DFU Bootloader... (timeout 5000 ms) I 17:17:47.067 Connection parameters updated (interval: 7.5ms, latency: 0, timeout: 5000ms) I 17:17:47.205 [DFU] DFU Bootloader found with address E6:DE:14:92:AB:6D V 17:17:47.224 [DFU] DFU service started I 17:17:47.224 [DFU] Firmware file opened successfully D 17:17:47.224 [DFU] wait(1000) D 17:17:48.239 [DFU] wait(1000) V 17:17:49.225 [DFU] Connecting to DFU target... D 17:17:49.246 [DFU] gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferredPhy = LE_1M | LE_2M) I 17:17:49.283 [DFU] Connected to E6:DE:14:92:AB:6D V 17:17:49.287 [DFU] Discovering services... D 17:17:49.287 [DFU] gatt.discoverServices() I 17:17:49.962 [DFU] Services discovered D 17:17:49.983 [DFU] wait(1000) V 17:17:50.966 [DFU] Requesting new MTU... D 17:17:50.966 [DFU] gatt.requestMtu(517) I 17:17:51.018 [DFU] MTU changed to: 247 V 17:17:51.018 [DFU] Enabling notifications for 8ec90001-f315-4f60-9fb8-838830daea50 D 17:17:51.018 [DFU] gatt.setCharacteristicNotification(8ec90001-f315-4f60-9fb8-838830daea50, true) D 17:17:51.020 [DFU] gatt.writeDescriptor(00002902-0000-1000-8000-00805f9b34fb, value=0x01-00) I 17:17:51.047 [DFU] Data written to descr.8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-00 V 17:17:51.047 [DFU] Notifications enabled for 8ec90001-f315-4f60-9fb8-838830daea50 A 17:17:51.047 [DFU] Notifications enabled D 17:17:51.047 [DFU] wait(1000) V 17:17:52.048 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50 D 17:17:52.048 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50) D 17:17:52.077 [Callback] Connection state changed with status: 8 and new state: DISCONNECTED (0) E 17:17:52.078 Error 8 (0x8): GATT CONN TIMEOUT I 17:17:52.078 Disconnected I 17:17:52.088 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-06-01-00-02-00-00-00-00-00-00-00-00-00-00 I 17:17:52.088 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-06-01-00-02-00-00-00-00-00-00-00-00-00-00 A 17:17:52.088 [DFU] Command object info received (Max size = 512, Offset = 0, CRC = 00000000) V 17:17:52.088 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50 D 17:17:52.088 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50) I 17:17:52.128 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 02-00-00 I 17:17:52.128 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-02-01 A 17:17:52.128 [DFU] Packet Receipt Notif disabled (Op Code = 2, Value = 0) V 17:17:52.128 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50 D 17:17:52.128 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50) I 17:17:52.141 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-01-8F-00-00-00 I 17:17:52.144 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01 A 17:17:52.144 [DFU] Command object created V 17:17:52.144 [DFU] Writing to characteristic 8ec90002-f315-4f60-9fb8-838830daea50 D 17:17:52.144 [DFU] gatt.writeCharacteristic(8ec90002-f315-4f60-9fb8-838830daea50) I 17:17:52.147 [DFU] Data written to 8ec90002-f315-4f60-9fb8-838830daea50, value (0x): 12-8C-01-0A-46-08-01-12-42-08-A8-B9-02-10-34-1A-02-CD-01-20-00-28-00-30-00-38-D0-BB-03-42-24-08-03-12-20-C1-99-0E-9B-04-4A-58-AC-17-AA-54-55-90-B7-B3-3B-1E-3E-FE-D8-23-A1-58-AE-15-EE-0D-D7-5F-84-26-A9-48-00-52-04-08-01-12-00-10-00-1A-40-84-4B-BD-CA-56-0D-C2-52-AA-71-E5-FA-2B-DB-7E-EE-7A-23-CB-C0-74-37-76-E5-99-70-4D-2C-DF-AD-8C-E0-40-C4-9E-0E-EC-FC-1A-87-01-F3-68-F8-93-D7-92-4F-24-68-54-69-D6-3B-08-36-57-48-92-B9-0A-C0-65-98 A 17:17:52.147 [DFU] Command object sent (CRC = A6A8FDB4) V 17:17:52.147 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50 D 17:17:52.147 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50) I 17:17:52.201 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03 I 17:17:52.202 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-8F-00-00-00-B4-FD-A8-A6 A 17:17:52.202 [DFU] Checksum received (Offset = 143, CRC = A6A8FDB4) V 17:17:52.203 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50 D 17:17:52.203 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50) I 17:17:52.232 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04 I 17:17:52.383 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01 A 17:17:52.384 [DFU] Command object executed V 17:17:52.384 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50 D 17:17:52.384 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50) I 17:17:52.412 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 06-02 I 17:17:52.419 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-06-01-00-10-00-00-00-00-00-00-00-00-00-00 A 17:17:52.420 [DFU] Data object info received (Max size = 4096, Offset = 0, CRC = 00000000) V 17:17:52.446 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50 D 17:17:52.446 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50) I 17:17:52.551 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01 I 17:17:52.551 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01 A 17:17:52.551 [DFU] Data object (1/14) created D 17:17:52.551 [DFU] wait(400) A 17:17:52.952 [DFU] Uploading firmware... V 17:17:52.952 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50... V 17:17:53.002 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50 D 17:17:53.002 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50) I 17:17:53.270 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03 I 17:17:53.270 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-10-00-00-71-E6-EE-CB A 17:17:53.270 [DFU] Checksum received (Offset = 4096, CRC = CBEEE671) V 17:17:53.270 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50 D 17:17:53.270 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50) I 17:17:53.299 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04 I 17:17:53.299 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01 A 17:17:53.299 [DFU] Data object executed V 17:17:53.299 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50 D 17:17:53.299 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50) I 17:17:53.328 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00 I 17:17:53.330 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01 A 17:17:53.330 [DFU] Data object (2/14) created D 17:17:53.330 [DFU] wait(400) A 17:17:53.731 [DFU] Uploading firmware... V 17:17:53.731 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50... V 17:17:53.795 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50 D 17:17:53.795 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50) E 17:17:59.426 [DFU] Device has disconnected D 17:17:59.426 [DFU] gatt.disconnect() D 17:17:59.433 [DFU] gatt.close() V 17:17:59.446 [DFU] DFU service started I 17:17:59.449 [DFU] Firmware file opened successfully D 17:17:59.457 [DFU] wait(1000) D 17:18:00.483 [DFU] wait(1000) V 17:18:01.459 [DFU] Connecting to DFU target... D 17:18:01.498 [DFU] gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferredPhy = LE_1M | LE_2M)
