I am working on integrated peripheral and central device used for indoor positioning. The device has two modes, at boot it is a peripheral for some duration of time then it stops advertising and becomes a central to perform the positioning activities. When the device is central functionality works as expected. When the device is a peripheral advertising works but I can no longer connect to the device it immediately disconnects. I have tried both nRFConnect for Windows and my iPhone. I am using SDK 14.2 and SD 132 v5.0.0.
The desktop nRFConnect gives me this message the following:
And I see the following in RTT <error> ble_gatt: sd_ble_gap_data_length_update() (reply) returned unexpected value 0x8
I have the following SDH values set:
// <i> These values are not used directly by the SoftDevice handler but the application or other libraries might depend on them. // <i> Keep them up-to-date with the desired configuration. //========================================================== // <o> NRF_SDH_BLE_PERIPHERAL_LINK_COUNT - Maximum number of peripheral links. #ifndef NRF_SDH_BLE_PERIPHERAL_LINK_COUNT #define NRF_SDH_BLE_PERIPHERAL_LINK_COUNT 1 #endif // <o> NRF_SDH_BLE_CENTRAL_LINK_COUNT - Maximum number of central links. #ifndef NRF_SDH_BLE_CENTRAL_LINK_COUNT #define NRF_SDH_BLE_CENTRAL_LINK_COUNT 1 #endif // <o> NRF_SDH_BLE_TOTAL_LINK_COUNT - Maximum number of total concurrent connections using the default configuration. #ifndef NRF_SDH_BLE_TOTAL_LINK_COUNT #define NRF_SDH_BLE_TOTAL_LINK_COUNT 1 #endif // <o> NRF_SDH_BLE_GAP_EVENT_LENGTH - The time set aside for this connection on every connection interval in 1.25 ms units. #ifndef NRF_SDH_BLE_GAP_EVENT_LENGTH #define NRF_SDH_BLE_GAP_EVENT_LENGTH 5 #endif // <o> NRF_SDH_BLE_GATT_MAX_MTU_SIZE - Static maximum MTU size. #ifndef NRF_SDH_BLE_GATT_MAX_MTU_SIZE #define NRF_SDH_BLE_GATT_MAX_MTU_SIZE 247 #endif // <o> NRF_SDH_BLE_GATTS_ATTR_TAB_SIZE - Attribute Table size in bytes. The size must be a multiple of 4. #ifndef NRF_SDH_BLE_GATTS_ATTR_TAB_SIZE #define NRF_SDH_BLE_GATTS_ATTR_TAB_SIZE 1408 #endif // <o> NRF_SDH_BLE_VS_UUID_COUNT - The number of vendor-specific UUIDs. #ifndef NRF_SDH_BLE_VS_UUID_COUNT #define NRF_SDH_BLE_VS_UUID_COUNT 6 #endif // <q> NRF_SDH_BLE_SERVICE_CHANGED - Include the Service Changed characteristic in the Attribute Table. #ifndef NRF_SDH_BLE_SERVICE_CHANGED #define NRF_SDH_BLE_SERVICE_CHANGED 1 #endif
And here is sample of the debug output:
00> RESET 000> SDK: FWID=157, VERSION=5.0.0 00> [00000000] <info> app: HFCLK running: N 00> [00000000] <info> app: Watchdog enabled and runs in sleep 00> [00000000] <info> app: Reboot reason: 0x00000004 Decode: 00> Software Reset 00> [00000000] <info> app: Dfu ver=255 00> [00000000] <error> app: No bootloader was found 00> [00000000] <error> app: No bootloader found!! Skipping DFU service init 00> [00000014] <debug> ble_gatt: Requesting to update ATT MTU to 247 bytes on connection 0x0. 00> [00000014] <debug> ble_gatt: Requesting to update data length to 251 on connection 0x0. 00> [00000014] <debug>app: Ble Evt: Handle 0, role: 1, ID: 16 00> [00000014] <debug> app: BLE Periph Evt handler 16 00> [00000014] <info> app: Connected 00> [00000014] <debug> ble_gatt: Data length updated to 27 on connection 0x0. 00> [00000014] <debug> ble_gatt: max_rx_octets: 27 00> [00000014] <debug> ble_gatt: max_tx_octets: 27 00> [00000014] <debug> ble_gatt: max_rx_time: 328 00> [00000014] <debug> ble_gatt: max_tx_time: 328 00> [00000014] <debug> app: Ble Evt: Handle 0, role: 1, ID: 36 00> [00000014] <debug> app: BLE Periph Evt handler 36 00> [00000014] <debug> ble_gatt: Peer on connection 0x0 requested a data length of 251 bytes. 00> [00000014] <debug> ble_gatt: Updating data length to 251 bytes on connection 0x0. 00> [00000014] <error> ble_gatt: sd_ble_gap_data_length_update() (reply) returned unexpected value 0x8. 00> [00000014] <debug> app: Ble Evt: Handle 0, role: 1, ID: 35 00> [00000014] <debug> app: BLE Periph Evt handler 35 00> [00000014] <debug> app: Ble Evt: Handle 0, role: 1, ID: 17 00> [00000014] <debug> app: BLE Periph Evt handler 17 00> [00000014] <info> app: Disconnected # Logging stopped @ 23 Nov 2018 12:47:23
Thanks in advance!
