Hi,
Have an issue which has popped up with our application. It is configured to use buttonless DFU for OTA updates.
It's been working fine in the past but with a recent build, the app cannot enter the bootloader when instructed to it seems.
The app uses pretty much all the example code from ble_app_buttonless_dfu/main.c to intialize the Buttonless DFU service. The device is also programmed with the bootloader from
examples/dfu/secure_bootloader/pca10056_s140_ble. (both from NRF5 SDK v17.1.0).
Here is what the logs from nRF connect app on DEBUG show when I initiate a DFU update and pass it a .zip file. It seems to get stuck in some sort of loop, I think it looks like it finds the DFU target but then tries to connect and gets disconnected? I'm not really sure whats going on.
nRF Connect, 2023-03-07 MYDEVICE E67E (E6:7E:D1:F5:4A:11) V 21:13:16.584 [DFU] DFU service started V 21:13:16.584 [DFU] Opening file... I 21:13:16.599 [DFU] Firmware file opened successfully V 21:13:16.599 [DFU] Connecting to DFU target... D 21:13:16.599 [DFU] gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferredPhy = LE_1M | LE_2M) I 21:13:16.614 [DFU] Connected to E6:7E:D1:F5:4A:11 V 21:13:16.614 [DFU] Discovering services... D 21:13:16.614 [DFU] gatt.discoverServices() I 21:13:16.617 [DFU] Services discovered D 21:13:16.634 [DFU] wait(1000) W 21:13:17.656 [DFU] Application with buttonless update found V 21:13:17.657 [DFU] Jumping to the DFU Bootloader... V 21:13:17.657 [DFU] Enabling indications for 8ec90003-f315-4f60-9fb8-838830daea50 D 21:13:17.657 [DFU] gatt.setCharacteristicNotification(8ec90003-f315-4f60-9fb8-838830daea50, true) D 21:13:17.657 [DFU] gatt.writeDescriptor(00002902-0000-1000-8000-00805f9b34fb, value=0x02-00) I 21:13:17.955 [DFU] Data written to descr.8ec90003-f315-4f60-9fb8-838830daea50, value (0x): 02-00 V 21:13:17.955 [DFU] Notifications enabled for 8ec90003-f315-4f60-9fb8-838830daea50 A 21:13:17.956 [DFU] Indications enabled D 21:13:17.956 [DFU] wait(1000) V 21:13:18.973 [DFU] Writing to characteristic 8ec90003-f315-4f60-9fb8-838830daea50 D 21:13:18.973 [DFU] gatt.writeCharacteristic(8ec90003-f315-4f60-9fb8-838830daea50) D 21:13:28.113 [Callback] Connection state changed with status: 0 and new state: DISCONNECTED (0) I 21:13:28.113 Disconnected A 21:13:28.151 [DFU] Enter bootloader sent (Op Code = 1) D 21:13:28.151 [DFU] gatt.refresh() (hidden) D 21:13:28.151 [DFU] gatt.disconnect() D 21:13:28.192 [DFU] gatt.close() V 21:13:28.192 [DFU] Scanning for the DFU Bootloader... (timeout 5000 ms) D 21:13:28.192 [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED D 21:13:28.192 [DFU] [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED I 21:13:28.416 [DFU] DFU Bootloader found with address E6:7E:D1:F5:4A:11 V 21:13:28.435 [DFU] DFU service started I 21:13:28.435 [DFU] Firmware file opened successfully D 21:13:28.435 [DFU] wait(1000) D 21:13:29.436 [DFU] wait(1000) V 21:13:30.450 [DFU] Connecting to DFU target... D 21:13:30.452 [DFU] gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferredPhy = LE_1M | LE_2M) D 21:13:31.028 [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED D 21:13:31.045 [DFU] [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED I 21:13:31.087 [DFU] Connected to E6:7E:D1:F5:4A:11 V 21:13:31.087 [DFU] Discovering services... D 21:13:31.087 [DFU] gatt.discoverServices() I 21:13:32.799 [DFU] Services discovered D 21:13:32.812 [DFU] wait(1000) W 21:13:33.817 [DFU] Application with buttonless update found V 21:13:33.817 [DFU] Jumping to the DFU Bootloader... V 21:13:33.817 [DFU] Enabling indications for 8ec90003-f315-4f60-9fb8-838830daea50 D 21:13:33.817 [DFU] gatt.setCharacteristicNotification(8ec90003-f315-4f60-9fb8-838830daea50, true) D 21:13:33.820 [DFU] gatt.writeDescriptor(00002902-0000-1000-8000-00805f9b34fb, value=0x02-00) I 21:13:33.868 [DFU] Data written to descr.8ec90003-f315-4f60-9fb8-838830daea50, value (0x): 02-00 V 21:13:33.868 [DFU] Notifications enabled for 8ec90003-f315-4f60-9fb8-838830daea50 A 21:13:33.868 [DFU] Indications enabled D 21:13:33.868 [DFU] wait(1000) V 21:13:34.875 [DFU] Writing to characteristic 8ec90003-f315-4f60-9fb8-838830daea50 D 21:13:34.875 [DFU] gatt.writeCharacteristic(8ec90003-f315-4f60-9fb8-838830daea50) A 21:13:43.889 [DFU] Enter bootloader sent (Op Code = 1) D 21:13:43.891 [DFU] gatt.refresh() (hidden) D 21:13:43.895 [DFU] gatt.disconnect() D 21:13:43.918 [DFU] gatt.close() D 21:13:43.924 [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED D 21:13:43.951 [DFU] [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED V 21:13:43.952 [DFU] Scanning for the DFU Bootloader... (timeout 5000 ms) I 21:13:44.200 [DFU] DFU Bootloader found with address E6:7E:D1:F5:4A:11 V 21:13:44.212 [DFU] DFU service started I 21:13:44.212 [DFU] Firmware file opened successfully D 21:13:44.212 [DFU] wait(1000) D 21:13:45.212 [DFU] wait(1000) V 21:13:46.225 [DFU] Connecting to DFU target... D 21:13:46.271 [DFU] gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferredPhy = LE_1M | LE_2M) D 21:13:46.789 [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED D 21:13:46.833 [DFU] [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED I 21:13:46.833 [DFU] Connected to E6:7E:D1:F5:4A:11 V 21:13:46.833 [DFU] Discovering services... D 21:13:46.833 [DFU] gatt.discoverServices() I 21:13:48.561 [DFU] Services discovered D 21:13:48.580 [DFU] wait(1000) W 21:13:49.578 [DFU] Application with buttonless update found V 21:13:49.578 [DFU] Jumping to the DFU Bootloader... V 21:13:49.578 [DFU] Enabling indications for 8ec90003-f315-4f60-9fb8-838830daea50 D 21:13:49.578 [DFU] gatt.setCharacteristicNotification(8ec90003-f315-4f60-9fb8-838830daea50, true) D 21:13:49.579 [DFU] gatt.writeDescriptor(00002902-0000-1000-8000-00805f9b34fb, value=0x02-00) I 21:13:49.625 [DFU] Data written to descr.8ec90003-f315-4f60-9fb8-838830daea50, value (0x): 02-00 V 21:13:49.625 [DFU] Notifications enabled for 8ec90003-f315-4f60-9fb8-838830daea50 A 21:13:49.625 [DFU] Indications enabled D 21:13:49.625 [DFU] wait(1000) V 21:13:50.647 [DFU] Writing to characteristic 8ec90003-f315-4f60-9fb8-838830daea50 D 21:13:50.647 [DFU] gatt.writeCharacteristic(8ec90003-f315-4f60-9fb8-838830daea50) A 21:13:59.649 [DFU] Enter bootloader sent (Op Code = 1) D 21:13:59.652 [DFU] gatt.refresh() (hidden) D 21:13:59.655 [DFU] gatt.disconnect() D 21:13:59.678 [DFU] gatt.close() D 21:13:59.684 [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED D 21:13:59.703 [DFU] [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED V 21:13:59.707 [DFU] Scanning for the DFU Bootloader... (timeout 5000 ms) I 21:14:00.225 [DFU] DFU Bootloader found with address E6:7E:D1:F5:4A:11 V 21:14:00.246 [DFU] DFU service started I 21:14:00.246 [DFU] Firmware file opened successfully D 21:14:00.246 [DFU] wait(1000) D 21:14:01.246 [DFU] wait(1000) V 21:14:02.263 [DFU] Connecting to DFU target... D 21:14:02.266 [DFU] gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferredPhy = LE_1M | LE_2M) D 21:14:02.818 [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED D 21:14:02.838 [DFU] [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED I 21:14:02.888 [DFU] Connected to E6:7E:D1:F5:4A:11 V 21:14:02.888 [DFU] Discovering services... D 21:14:02.888 [DFU] gatt.discoverServices() I 21:14:04.592 [DFU] Services discovered D 21:14:04.615 [DFU] wait(1000) W 21:14:05.606 [DFU] Application with buttonless update found V 21:14:05.606 [DFU] Jumping to the DFU Bootloader... V 21:14:05.606 [DFU] Enabling indications for 8ec90003-f315-4f60-9fb8-838830daea50 D 21:14:05.606 [DFU] gatt.setCharacteristicNotification(8ec90003-f315-4f60-9fb8-838830daea50, true) D 21:14:05.606 [DFU] gatt.writeDescriptor(00002902-0000-1000-8000-00805f9b34fb, value=0x02-00) I 21:14:05.634 [DFU] Data written to descr.8ec90003-f315-4f60-9fb8-838830daea50, value (0x): 02-00 V 21:14:05.634 [DFU] Notifications enabled for 8ec90003-f315-4f60-9fb8-838830daea50 A 21:14:05.634 [DFU] Indications enabled D 21:14:05.634 [DFU] wait(1000) V 21:14:06.658 [DFU] Writing to characteristic 8ec90003-f315-4f60-9fb8-838830daea50 D 21:14:06.658 [DFU] gatt.writeCharacteristic(8ec90003-f315-4f60-9fb8-838830daea50) A 21:14:15.665 [DFU] Enter bootloader sent (Op Code = 1) D 21:14:15.673 [DFU] gatt.refresh() (hidden) D 21:14:15.676 [DFU] gatt.disconnect() D 21:14:15.691 [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED D 21:14:15.718 [DFU] [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED D 21:14:15.719 [DFU] gatt.close() V 21:14:15.754 [DFU] Scanning for the DFU Bootloader... (timeout 5000 ms) I 21:14:16.028 [DFU] DFU Bootloader found with address E6:7E:D1:F5:4A:11 V 21:14:16.044 [DFU] DFU service started I 21:14:16.044 [DFU] Firmware file opened successfully D 21:14:16.044 [DFU] wait(1000) D 21:14:17.045 [DFU] wait(1000) V 21:14:18.064 [DFU] Connecting to DFU target... D 21:14:18.066 [DFU] gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferredPhy = LE_1M | LE_2M) D 21:14:18.343 [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED D 21:14:18.368 [DFU] [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED I 21:14:18.371 [DFU] Connected to E6:7E:D1:F5:4A:11 V 21:14:18.403 [DFU] Discovering services... D 21:14:18.403 [DFU] gatt.discoverServices() I 21:14:20.143 [DFU] Services discovered D 21:14:20.164 [DFU] wait(1000) W 21:14:21.158 [DFU] Application with buttonless update found V 21:14:21.158 [DFU] Jumping to the DFU Bootloader... V 21:14:21.158 [DFU] Enabling indications for 8ec90003-f315-4f60-9fb8-838830daea50 D 21:14:21.158 [DFU] gatt.setCharacteristicNotification(8ec90003-f315-4f60-9fb8-838830daea50, true) D 21:14:21.158 [DFU] gatt.writeDescriptor(00002902-0000-1000-8000-00805f9b34fb, value=0x02-00) I 21:14:21.212 [DFU] Data written to descr.8ec90003-f315-4f60-9fb8-838830daea50, value (0x): 02-00 V 21:14:21.212 [DFU] Notifications enabled for 8ec90003-f315-4f60-9fb8-838830daea50 A 21:14:21.212 [DFU] Indications enabled D 21:14:21.212 [DFU] wait(1000) V 21:14:22.229 [DFU] Writing to characteristic 8ec90003-f315-4f60-9fb8-838830daea50 D 21:14:22.229 [DFU] gatt.writeCharacteristic(8ec90003-f315-4f60-9fb8-838830daea50) A 21:14:31.232 [DFU] Enter bootloader sent (Op Code = 1) D 21:14:31.235 [DFU] gatt.refresh() (hidden) D 21:14:31.241 [DFU] gatt.disconnect() D 21:14:31.262 [DFU] gatt.close() D 21:14:31.276 [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED D 21:14:31.293 [DFU] [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED V 21:14:31.293 [DFU] Scanning for the DFU Bootloader... (timeout 5000 ms) I 21:14:31.543 [DFU] DFU Bootloader found with address E6:7E:D1:F5:4A:11 V 21:14:31.583 [DFU] DFU service started I 21:14:31.583 [DFU] Firmware file opened successfully D 21:14:31.584 [DFU] wait(1000) D 21:14:32.585 [DFU] wait(1000) V 21:14:33.586 [DFU] Connecting to DFU target... D 21:14:33.621 [DFU] gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferredPhy = LE_1M | LE_2M) D 21:14:34.377 [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED D 21:14:34.410 [DFU] [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED I 21:14:34.449 [DFU] Connected to E6:7E:D1:F5:4A:11 V 21:14:34.449 [DFU] Discovering services... D 21:14:34.449 [DFU] gatt.discoverServices() I 21:14:36.151 [DFU] Services discovered D 21:14:36.166 [DFU] wait(1000) W 21:14:37.166 [DFU] Application with buttonless update found V 21:14:37.167 [DFU] Jumping to the DFU Bootloader... V 21:14:37.167 [DFU] Enabling indications for 8ec90003-f315-4f60-9fb8-838830daea50 D 21:14:37.167 [DFU] gatt.setCharacteristicNotification(8ec90003-f315-4f60-9fb8-838830daea50, true) D 21:14:37.171 [DFU] gatt.writeDescriptor(00002902-0000-1000-8000-00805f9b34fb, value=0x02-00) I 21:14:37.208 [DFU] Data written to descr.8ec90003-f315-4f60-9fb8-838830daea50, value (0x): 02-00 V 21:14:37.208 [DFU] Notifications enabled for 8ec90003-f315-4f60-9fb8-838830daea50 A 21:14:37.208 [DFU] Indications enabled D 21:14:37.208 [DFU] wait(1000) V 21:14:38.233 [DFU] Writing to characteristic 8ec90003-f315-4f60-9fb8-838830daea50 D 21:14:38.233 [DFU] gatt.writeCharacteristic(8ec90003-f315-4f60-9fb8-838830daea50) A 21:14:47.231 [DFU] Enter bootloader sent (Op Code = 1) D 21:14:47.235 [DFU] gatt.refresh() (hidden) D 21:14:47.239 [DFU] gatt.disconnect() D 21:14:47.248 [DFU] gatt.close() D 21:14:47.264 [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED D 21:14:47.283 [DFU] [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED V 21:14:47.283 [DFU] Scanning for the DFU Bootloader... (timeout 5000 ms) I 21:14:47.539 [DFU] DFU Bootloader found with address E6:7E:D1:F5:4A:11 V 21:14:47.548 [DFU] DFU service started I 21:14:47.548 [DFU] Firmware file opened successfully D 21:14:47.548 [DFU] wait(1000) D 21:14:48.548 [DFU] wait(1000) V 21:14:49.567 [DFU] Connecting to DFU target... D 21:14:49.569 [DFU] gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferredPhy = LE_1M | LE_2M) D 21:14:49.933 [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED D 21:14:49.956 [DFU] [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED I 21:14:50.006 [DFU] Connected to E6:7E:D1:F5:4A:11 V 21:14:50.006 [DFU] Discovering services... D 21:14:50.006 [DFU] gatt.discoverServices() E 21:14:54.557 [DFU] Disconnected D 21:14:54.557 [DFU] gatt.refresh() (hidden) D 21:14:54.560 [DFU] gatt.disconnect() D 21:14:54.571 [DFU] gatt.close() D 21:14:54.587 [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED D 21:14:54.607 [DFU] wait(600) D 21:14:54.607 [DFU] [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED D 21:14:55.197 gatt.close() D 21:14:55.207 wait(200) V 21:14:55.410 Connecting to E6:7E:D1:F5:4A:11... D 21:14:55.410 gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferred PHY = LE 1M) D 21:14:55.813 [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED D 21:14:55.848 [Callback] Connection state changed with status: 0 and new state: CONNECTED (2) I 21:14:55.848 Connected to E6:7E:D1:F5:4A:11 V 21:14:55.849 Requesting new MTU... D 21:14:55.849 gatt.requestMtu(517) I 21:14:56.402 Connection parameters updated (interval: 15.0ms, latency: 0, timeout: 4000ms) I 21:14:56.429 PHY updated (TX: LE 2M, RX: LE 2M) D 21:15:00.420 [Callback] Connection state changed with status: 0 and new state: DISCONNECTED (0) I 21:15:00.420 Disconnected D 21:15:00.537 [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED
I'll try to post snippets that I think are relevant:
Connection parameters:
// Connection parameters
#define DEFAULT_MAX_CONN_INTERVAL MSEC_TO_UNITS(15, UNIT_1_25_MS) /**< Default maximum acceptable connection interval on init, Connection interval uses 1.25 ms unorbs. */
#define SLAVE_LATENCY 0 /**< Slave latency. */
#define CONN_SUP_TIMEOUT MSEC_TO_UNITS(4000, UNIT_10_MS) /**< Connection supervisory timeout, Supervision Timeout uses 10 ms unorbs. */
#define FIRST_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(10) /**< Delay before negotiation is initiated. */
#define NEXT_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(10) /**< Delay for subsequent request to be sent in case parameters are not updated as requested. */
#define MAX_CONN_PARAMS_UPDATE_COUNT 5 /**< Number of attempts before giving up the connection parameter negotiation. */
#define CONNECTION_POWER 8 /**< Connection power in dB. \
Supported tx_power values: -40dBm, -20dBm, -16dBm, -12dBm, -8dBm, -4dBm, 0dBm, +2dBm, +3dBm, \
+4dBm, +5dBm, +6dBm, +7dBm and +8dBm. */DFU related fns and callbacks:
/**@brief Callback function for asserts in the SoftDevice.
*
* @details This function will be called in case of an assert in the SoftDevice.
*
* @warning This handler is an example only and does not fit a final product. You need to analyze
* how your product is supposed to react in case of Assert.
* @warning On assert from the SoftDevice, the system can only recover on reset.
*
* @param[in] line_num Line number of the failing ASSERT call.
* @param[in] file_name File name of the failing ASSERT call.
*/
void assert_nrf_callback(uint16_t line_num, const uint8_t *p_file_name)
{
app_error_handler(0xDEADBEEF, line_num, p_file_name);
}
/**@brief Handler for shutdown preparation.
*
* @details During shutdown procedures, this function will be called at a 1 second interval
* untill the function returns true. When the function returns true, it means that the
* app is ready to reset to DFU mode.
*
* @param[in] event Power manager event.
*
* @retval True if shutdown is allowed by this power manager handler, otherwise false.
*/
static bool _app_shutdown_handler(nrf_pwr_mgmt_evt_t event)
{
switch (event)
{
case NRF_PWR_MGMT_EVT_PREPARE_DFU:
NRF_LOG_INFO("Power management wants to reset to DFU mode.");
// YOUR_JOB: Get ready to reset into DFU mode
//
// If you aren't finished with any ongoing tasks, return "false" to
// signal to the system that reset is impossible at this stage.
//
// Here is an example using a variable to delay resetting the device.
//
// if (!m_ready_for_reset)
// {
// return false;
// }
// else
//{
//
// // Device ready to enter
// uint32_t err_code;
// err_code = sd_softdevice_disable();
// APP_ERROR_CHECK(err_code);
// err_code = app_timer_stop_all();
// APP_ERROR_CHECK(err_code);
//}
break;
default:
// YOUR_JOB: Implement any of the other events available from the power management module:
// -NRF_PWR_MGMT_EVT_PREPARE_SYSOFF
// -NRF_PWR_MGMT_EVT_PREPARE_WAKEUP
// -NRF_PWR_MGMT_EVT_PREPARE_RESET
return true;
}
NRF_LOG_INFO("Power management allowed to reset to DFU mode.");
return true;
}
// lint -esym(528, m_app_shutdown_handler)
/**@brief Register application shutdown handler with priority 0.
*/
NRF_PWR_MGMT_HANDLER_REGISTER(_app_shutdown_handler, 0);
/* ===================================================================================================================== */
/* ============================================== Connection State =================================================== */
/* ===================================================================================================================== */
static void _disconnect(uint16_t conn_handle, void *p_context)
{
UNUSED_PARAMETER(p_context);
ret_code_t err_code = sd_ble_gap_disconnect(conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
if (err_code != NRF_SUCCESS)
{
NRF_LOG_ERROR("Failed to disconnect connection. Connection handle: %d Error: %d", conn_handle, err_code);
}
else
{
NRF_LOG_INFO("Disconnected connection handle %d", conn_handle);
}
led_blink(500, 4000);
}
/* ===================================================================================================================== */
/* ===================================================== DFU ========================================================= */
/* ===================================================================================================================== */
// YOUR_JOB: Update this code if you want to do anything given a DFU event (optional).
/**@brief Function for handling dfu events from the Buttonless Secure DFU service
*
* @param[in] event Event from the Buttonless Secure DFU service.
*/
static void _ble_dfu_evt_handler(ble_dfu_buttonless_evt_type_t event)
{
uint32_t conn_count;
switch (event)
{
case BLE_DFU_EVT_BOOTLOADER_ENTER_PREPARE:
{
NRF_LOG_INFO("Device is preparing to enter bootloader mode.");
// Prevent device from advertising on disconnect.
advertising_disable_adv_on_disconnect();
// Disconnect all other bonded devices that currently are connected.
// This is required to receive a service changed indication
// on bootup after a successful (or aborted) Device Firmware Update.
conn_count = ble_conn_state_for_each_connected(_disconnect, NULL);
NRF_LOG_INFO("Disconnected %d links.", conn_count);
break;
}
case BLE_DFU_EVT_BOOTLOADER_ENTER:
// YOUR_JOB: Write app-specific unwritten data to FLASH, control finalization of this
// by delaying reset by reporting false in app_shutdown_handler
NRF_LOG_INFO("Device will enter bootloader mode.");
break;
case BLE_DFU_EVT_BOOTLOADER_ENTER_FAILED:
NRF_LOG_ERROR("Request to enter bootloader mode failed asynchroneously.");
// YOUR_JOB: Take corrective measures to resolve the issue
// like calling APP_ERROR_CHECK to reset the device.
break;
case BLE_DFU_EVT_RESPONSE_SEND_ERROR:
NRF_LOG_ERROR("Request to send a response to client failed.");
// YOUR_JOB: Take corrective measures to resolve the issue
// like calling APP_ERROR_CHECK to reset the device.
APP_ERROR_CHECK(false);
break;
default:
NRF_LOG_ERROR("Unknown event from ble_dfu_buttonless.");
break;
}
}
static void _buttonless_dfu_sdh_state_observer(nrf_sdh_state_evt_t state, void *p_context)
{
if (state == NRF_SDH_EVT_STATE_DISABLED)
{
// Softdevice was disabled before going into reset. Inform bootloader to skip CRC on next boot.
nrf_power_gpregret2_set(BOOTLOADER_DFU_SKIP_CRC);
// Go to system off.
nrf_pwr_mgmt_shutdown(NRF_PWR_MGMT_SHUTDOWN_GOTO_SYSOFF);
}
}
/* nrf_sdh state observer. */
NRF_SDH_STATE_OBSERVER(m_buttonless_dfu_state_obs, 0) =
{
.handler = _buttonless_dfu_sdh_state_observer,
};Init of DFU buttonless service:
ble_dfu_buttonless_init_t dfus_init = {0};
err_code = ble_dfu_buttonless_init(&dfus_init);
APP_ERROR_CHECK(err_code);I'm not really sure where to begin to diagnose this issue. Hoping it's still possible to update these devices.
