JDY-22 4.2 Ultra Low Power BLE bluetooth Module Serial Transmissions External Antenna

JDY 22 sleep pattern description Sleep patternInstructionsFunctional descriptionStart wake upAT STARTEN1Mode 1 wake up call users need sleep can be controlled by AT SLEEP command wake up can be awakened by PWRC pin low level Start sleepAT STARTENOMode 0 the power is very low under this mode The connection calls the permeable transmission current at 900uA disconnects the connection current below 200uA can set the broadcast interval current to 30uA this mode PWRC pin wake up such as the serial port in 10 seconds without data or will not be connected to sleep automatically again into sleep Common problem description ProblemAnswer to the question1 how MCU disconnects the bluetooth connection in the connection stateIn the connection state the PWRC pin is pulled down and the serial port sends AT DISC to disconnect 2 how much is the current when the module wakes upAll mode work current is not more than 1mA3 How much data can be written to serial port onceNo byte limit at 9600 baud rate4 After the serial port is configured do you need to restart it to take effect It is recommended to restart the module when the parameters are set5 How to test the depth of sleep current in the test moduleIt is recommended to test the current of VCC and GND pinsDefault parameter configuration used in factory SequenceFunctionFactory default parametersInstructions1Serial port baud rate9600AT BAUD42Sleep patternStart wake upAT STARTEN03Broadcast nameJDY 21AT NAMHJDY 214Broadcast interva