RF-Star nRF52832 - Default Beacon Configuration; Device Status Indicators; Multi-Connection Handling

nRF52832
www.szrfstar.com V1.3 - Sep., 2020
Shenzhen RF-star Technology Co., Ltd. Page 9 of 58
6. Device status: transparent transmission
2.5 Default Configuration at Beacon Mode
1. Company ID: 0x0059 (Nordic).
2. Major UUID: 0x0102.
3. Minor UUID: 0x0304.
4. RSSI: -50 dBm.
5. UUID: 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10.
The serial port is closed and unavailable in this mode.
2.6 Device Status
1. DEVICE START: The device starts to work.
2. S:CONNECTED: BLE slave is successfully connected.
3. S:DISCONNECTED: BLE slave is disconnected.
4. B:CONNECTED: Beacon is successfully connected.
5. B:DISCONNECTED: Beacon is disconnected.
6. “XX:XX:XX:XX:XX:XX CONNEDTED”: BLE master is successfully connected (The string in red is the MAC address
of the connected slave).
7. “XX:XX:XX:XX:XX:XX DISCONNECTED”: BLE master is disconnected (The string in red is the MAC address of the
disconnected slave).
8. DEVICE ERROR!: An abnormal error occurred in the device.
The above states can be turned on or off by the AT command. For details, please refer to AT Command.
2.7 Multi-Connection
1. Support multi-connection during master mode and master-slave mode. A maximum of 22 slave devices can be
connected at the same time. It is recommended to connect 3 or less slave devices for more stability.
2. If AT+CONNECT command failed to connect to the device (prompt FAIL), please check whether the stored device
list has reached the maximum number of storage (AT+DEV_DEL=? command to check the device list).
3. Multi-connection means multiple devices automatically reconnect. When an opposite device disconnects
abnormally, the device will initiate reconnection. Scan the surrounding BLE devices for 3 times before the
reconnection (once every 20 s). If the device is not found after the timeout of 3 scans, the master device will enter
the slow scan state, that is, the device scans the surrounding devices once every 5 minutes. If the device to be
connected is found, reconnect will be conducted.