ページを印刷するFig1: Enter AT+HELP=? to get AT Command List
Bluetooth Connection
Before using BLE4.1 series devices, it is better to know some key buttons first.
BOOT: Update Bluetooth firmware/Enable the approach connection (<10cm).
Firmware update**: Press and hold the "BOOT" button until you plug USB cable, entering firmware
update mode. For any enquiry, please refers to the part: Firmware Update. (You can release your
hand after you plugged the USB cable.)
Approach connection**: Press and hold the host BOOT button, approach the slave Bluetooth
device to connect.
WAKEUP: the button can wake up the device from low-power consum[ption mode (you can also
connect this pin to MCU to realize the same function)
RST: BLE4.1 reset button
Below is the BLE4.1 minimum system circuit diagram for your reference: Fig1: the BLE4.1
minimum system circuit diagram