A collection of small utilities for use with espnow and wifi on micropython
src/wifi.py: A small module to bulletproof initialising wifi on ESP32 and ESP8266 devices.
These functions are designed to robustly and reliably account for differences between esp8266 and esp32 devices and to ensure the wifi is always in a fully known state (even after soft_reset).
import wifi
sta, ap = wifi.reset() # STA_IF on and disconnected, AP off, channel=1
sta, ap = wifi.reset(sta=True, ap=True, channel=6)
wifi.connect("ssid", "password")
wifi.status() # Print details on wifi configsrc/scan_for_peer.py: Scan channels to find an ESPNow peer.
from scan_for_peer import scan_for_peer
scan_for_peer(b'macadd') # Print channel if found and leave set to channelsrc/lazyespnow.py: LazyESPNow() extends ESPNow class to catch and fix most common errors.
from lazyespnow import LazyESPNow
peer = b'\xaa\xaa\xaa\xaa\xaa\xaa'
enow = LazyESPNow()
enow.send(peer, message) # Automatically call active(True) and add_peer()src/ntp.py: Set the time from an NTP server over wifi.
import ntp
ntp.server = "192.168.1.1"
ntp.settime()src/timer.py: A useful collection of easy to user python timer objects.
import timer
for t in timer_ms(5000, 1000, raise_on_timeout=True):
print(t)src/echo.py: A simple ESPNow server that echos messages back to the sender.
import echo
echo.server() # Wait for incoming messages and echo back to senderimport espnow
import network
import time
import ubinascii
import components.device_type.DeviceType as DeviceType
class ESPNowController():
def __init__(self):
self.wlan = network.WLAN(network.STA_IF) # network.STA_IF Or network.AP_IF
self.wlan.active(True)
print ('wifi initialized')
self.esp_now = espnow.ESPNow()
self.esp_now.init()
print ('esp_now initialized')
def get_current_mac(self):
return ubinascii.hexlify(self.wlan.config('mac'),':').decode()
# return self.wlan.config('mac')
def add_peer(self, mac):
self.esp_now.add_peer(mac)
def send_data(self, data):
try:
self.esp_now.send("test")
except OSError as err:
print("Error: {0}".format(err))
time.sleep_ms(1000)