User's Manual

HF-LPX30 Series Low Power WiFi Module User Manual
Shanghai High-Flying Electronics Technology Co., Ltd(www.hi-flying.com) - 10 -
Pin Describtion Net Name Signal
Type
Comments
GPIO24, PWM2
12 Multi-Function nReload I,PU
Detailed functions see <Notes>
GPIO25, PWM3
13 Wi-Fi Status nLink O “0” – Wi-Fi connect to router
“1” – Wi-Fi unconncted;
Detailed functions see <Notes>
GPIO8
14 GPIO3 GPIO3 I/O GPIO3,PWM4
There will be 2ms output low when bootup, after
then it works as input pull high.
15 +3.3V Power DVDD Power
16 Ground GND Power
Debug RX UART1_RXD I 3.3V UART1 Debug Input
GPIO26, Leave it if not use
Debug TX UART1_TXD O 3.3V UART1 Debug Output
GPIO27, Leave it if not use
<Notes>
I — Input；O — Output
PU—Internal Resistor Pull Up； I/O: Digital I/O； Power—Power Supply
nReload Pin (Button) function：
1. When this pin is set to “low” during module boot up, the module will enter wireless
firmware and config upgrade mode. This mode is used for customer manufacture.
(See Appendix to download software tools for customer batch configuration and
upgrade firmware during mass production)
2. After module is powered up, short press this button (0.2s < “Low” < 1.5s) and loose
to make the module go into “SmartLink “ config mode, waiting for APP to set
password and other information. (See Appendix to download SmartLink V8 and
SmartAPLink APP)
3. After module is powered up, long press this button ( “Low” > 4s ) and loose to make
the module recover to factory setting.
High-Flying strongly suggest customer fan out this pin to connector or button for
“Manufacture” upgrade or “ SmartLink” application.
nReady Pin (LED) function(Low effective)：
1. OS initial finished indicator. Only after this pin output low, can the UART function be
used.
nLink Pin (LED) function(Low effective)：
1. At wireless firmware and config upgrade mode , this LED used to indicate configure
and upgrade status.
2. At “SmartLink” config mode, this LED is used to indicate APP to finish setting.
3. At normal mode, it’s Wi-Fi link status indicator. Output Low when STA mode connect
to router AP or other STA connect to it when in AP mode.