Usr USR-WIFI232-G, User Manual

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Low Power WiFi Module User Manual V1.3 http://www.tcp232.net
Jinan USR IOT Technology Limited. Page 23 of 59 freda@usr.so
2.10. GPIO Function
USR-WIFI232-G module can provide maximum 6 GPIO pins, which include 3 PWM control pins, and 3
general GPIO pin. As GPIO functional pin, user devices can read/write GPIO/PWM pins status
through AT+instruction set.
Table 7 USR-WIFI232-G GPIO Pin Mapping Table
When module works at PWM mode, PC and other equipts can setup connection (TCP/UDP) through
WiFi, then read/write GPIO/PWM information through command.
 GPIO n IN, Set GPIOn as input, Response GPIO OK or GPIO NOK;
 GPIO n OUT 0, Set GPIOn as output and output ‘0’, Response GPIO OK or GPIO NOK;
 GPIO n OUT 1, Set GPIOn as output and output ‘1’, Response GPIO OK or GPIO NOK;
 GPIO n GET, query GPIOn pin level, Reok=1 or GPIO NOK;
 GPIO n SET, save GPIOn output level, Response GPIO OK or GPIO NOK;
 PWM n frequency duty: set PWMn output, Response PWM OK or PWM NOK
 PWM n GET, query PWMn values, Reok=frequency duty or PWM NOK
 PWM n SET, save PWMn parameters, Response PWM OK or PWM NOK
GPIO Configured Function Describtion
Default Setting Type
GPIO16 PWM 1 Output USB_PIO GPIO16 I/O
GPIO20 PWM 2 Output GPIO20 GPIO20 I/O
GPIO23 GPIO 1 Output PWMH0 GPIO23
O
GPIO24 PWM 0 Output PWML0
GPIO24 O
GPIO26 GPIO 0 Output
GPIO26
GPIO26 I/O
GPIO46 GPIO 2 Output PWMFI0 GPIO46 I/O