HM10 Bluetooth Module Datasheet

HM Bluetooth module datasheet
-------------------------------------------------------Last Version V507 2013-08-23
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3 UART_CTS UART interface
4 UART_RX UART interface
5 NC NC
6 NC NC
7 NC NC
8 NC NC
9 VCC V3.3
10 NC NC or VCC
11 RESETB Reset if low <100ms
12 GND Ground
13 PIO3 Programmable input/output line
14 PIO2 Programmable input/output line
15 PIO1 System LED
16 PIO0 System KEY
7. System function
How to wake up module from sleep mode?
There are two ways to wake up module from sleep mode.
7.1 Send “I am iron man, I am iron man, I am iron man I am iron…..” string.
Yes, that is a joke, in sleep mode, you can send a long string (Length >
80 or more), that string can made module wake up, and you will receive
“OK+WAKE” string through UART. That string can’t include any AT commands.
7.2 Long press system KEY >=1000 ms.
After wake up module, you can send and receive AT commands.
How to let module into sleep mode?
In discoverable mode, send “AT+SLEEP” string through UART, if all is okay,
module will return “OK+SLEEP” string and into sleep mode.
System KEY function (PIO0)
Press if Low > 1000ms: