How to add WizFi360-EVB-Mini to Raspberry Pi Pico-(Python)

WizFi360 is a low cost and low-power consumption industrial-grade WiFi module. It is compatible with IEEE802.11 b/g/n standard and supports SoftAP, Station and SoftAP+Station modes. The serial port baud rate can be up to 2Mbps.

Instructions

WizFi360-EVB-Mini Feature

WizFi360 can be designed with a very simple circuit and data transmission is possible using UART1.

WizFi360 controls AT commands via UART and uses UART0 when Micro USB is connected.

MicroPython Thonny IDE installation

• MicroPython Thonny IDE Install

https://thonny.org/

• Download Thonny and set it up for your Raspberry Pi Pico board.

• Tools -> Options -> Interpreter
• Set Raspberry Pi Pico and COMx in options

Hercules_3.2.8 SETUP utility

• Install Hercules SETUP utility

https://www.hw-group.com/software/hercules-setup-utility

• Open TCP Server from PC which is connected to the same WiFi AP that WizFi360 is connected to.

Connect WizFi360-EVB-Mini to Raspberry Pi Pico

Raspberry Pi Pico pin map

WizFi360-EVB-Mini pin map

Schematics

WizFi360-EVB-Mini connection diagram

OVERVIEW

• There are 3 operation modes of WizFi360.
• -Station mode
• -SoftAP mode
• -Station + SoftAP mode
• Station Mode

Station mode is a method in which WizFI360 connects to the AP (Router). Assign IP via DHCP from AP Receive or use by setting Static IP.

• SoftAP mode

In SoftAP mode, WizFI360 operates as an AP. Other devices connect to WizFi360 as a Station. WizFi360 allocates an IP connected to the device, it is only capable of communicating in Local Networks.

• Station + SoftAP mode

In Station + SoftAP mode is WizFi360 acts as both Station and AP.

We will use station mode.

WizFi360 UART + AT command Test

WizFi360_AT_Client.py

AT+CWJAP_CUR="SSID","PASSWORD

Just enter the ID and PW of the AP (Router) you want to connect to.

AT+CIPSTART=0,"TCP","YOUR_IP_ADDRESS",5000

Input Server's IP in YOUR_IP_ADDRESS.

import os, sys
import utime
from machine import UART,Pin

print(os.uname())

#LED
led = machine.Pin(25, machine.Pin.OUT)
led.value(0)
utime.sleep(0.5)
led.value(1)

#UART
#uart = machine.UART(0, baudrate=115200, tx=Pin(0), rx=Pin(1))
uart = machine.UART(1, baudrate=115200, tx=Pin(8), rx=Pin(9))
print("UART Setting...")
print(uart)

#Functions
def sendCMD_waitResp(cmd, timeout=3000):
    print("CMD: " + cmd)
    uart.write(cmd)
    waitResp(timeout)
    print()
    
def waitResp(timeout=3000):
    prvMills = utime.ticks_ms()
    resp = b""
    while (utime.ticks_ms()-prvMills) < timeout:
        if uart.any():
            resp = b"".join([resp, uart.read(1)])
    print(resp)

#AT command Test
sendCMD_waitResp("AT\r\n") #AT
sendCMD_waitResp("AT+GMR\r\n") #AT ver

utime.sleep(1)
#sendCMD_waitResp("AT+RST\r\n") #reset
sendCMD_waitResp("AT+CWMODE_CUR=1\r\n") # Station Mode
sendCMD_waitResp("AT+CWDHCP_CUR=1,1\r\n") #DHCP on

utime.sleep(1)
sendCMD_waitResp('AT+CWJAP_CUR="SSID","PASSWORD"\r\n') #AP connecting
sendCMD_waitResp("AT+CIPSTA_CUR?\r\n") #network chk


#TCP Client
sendCMD_waitResp("AT+CIPMUX=1\r\n")
sendCMD_waitResp('AT+CIPSTART=0,"TCP","YOUR_IP_ADDRESS",5000\r\n') #connect Server

print("connected...")
print("RPi-PICO with WizFi360")

Data = bytes()

while True:
    if uart.any()> 0:
        Data += uart.read(10)
        print("read...")
        utime.sleep(0.5)
        led.value(0)
        print(Data.decode('utf-8'))
        led.value(1)

• This is the result of executing the Pico WizFi360 AT command.
• WizFi360 return OK, AT command can be used.

• It was confirmed that the server is connected on your PC.

Thank you