Gpio Mode; Httpd Client Mode - Waveshare WIFI232-B2 User Manual

WIFI232-B2 User Manual
Target address: 0x85 0x00 0xA8 0xC0 (192.168.0.0133)
Data: 0x01 (data length: 1)
Sum check: 0x0f
(0x00+0x00+0x00+0x21+0x00+0x85+0x00+0xA8+0xC0+0x01=0x0f)

4.2.3 GPIO Mode

WIFI232 module support GPIO mode. In GPIO mode, UART (TXD/RXD/CTS/RTS)
defined as GPIO and others (nReady/nLink) also defined as GPIO pin.
When module works at GPIO mode, PC and other equipments can setup
connection (TCP/UDP) through WiFi, then read/write GPIO 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 SW: Set GPIOn as output as output and switch the output status,
Response GPIO OK or GPIO NOK;
 GPIO n PWM m1 m2: Set GPIOn output a wave. m1 is 'high' duration and m2
is 'low' duration (Time unit is 'ms' and minimal is 10 ms). Response GPIO OK or GPIO
NOK;
 GPIO n GET, Read GPIOn status. Response I0, I1, O0, O1 means "input low",
"input high", "output low" and "output high" separately.
Notes:
n can be 3, 4, 5, 6, 8, 9 corresponding module pin. GPIO 4 can only defined as
input and GPIO 3 can only defined as output.
GPIO READ returns all current IO status, and GPIO n GET said method. Such as,
I1I1I0I0I0I0O1. I stand for input, and O for output. 0 means low and 1 means high.
Pin 4 is negated. So if you read 1, it actual 0 and if you read 0, it actual 1.

4.2.4 HTTPD Client Mode

This mode is used to send data to the HTTP server or request data from server.
After setting the HTTP header format by webpage or AT command, the data sent
each time by UART will add the HTTP header automatically. Convenient for the user
directly submit data or read data from the HTTP server.
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