I read in the f.. manual :-) and found this:
HM-10 Device Terminal Functions: PIN 11 | RESETB | Reset if low >100ms.
I googled and found this:
1.3.1 How to wake up module from sleep mode? There are two ways to wake up module from sleep mode.
- 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.
- Long press system KEY >=1000 ms.
After wake up module, you can send and receive AT commands.
findFind this here: http://eezone.co.uk/blog/wireless/hm-10-cc2541-4-0-ble-bluetooth-to-uart-transceiver-module.html here. (but they quote the manual too)
(system KEY on "real" HM-10 breakouts is BRK)