ESP-Now support

[BetterAuto]

How about it? :-)
https://www.espressif.com/en/products/software/esp-now/overview

I see a library being started over here:
https://github.com/micropython/micropython-esp32/issues/197

[seb]

Hi,

This is a feature we will be looking into but we don't have a specific date for when it might be available I am afraid.

[BetterAuto]

I may use this workaround: Configure an ESP8266 as an ESP-Now client and control it from the Wi-Py over UART.

[BetterAuto]

I was happy to see this is finally being added :-)

https://forum.pycom.io/topic/7016/new-beta-release-v1-20-3-b3?page=1

[livius]

@BetterAuto
yes, it is really usefull way to comunicate between boards :)

[RonanG]

Re: New Beta Release v1.20.3.b3

I'm interested in testing ESPNow, I have tried to create an ESPNOW interface instance following the example here https://github.com/glenn20/micropython/blob/espnow-g20/docs/library/espnow.rst

However the ESPNOW module is not callable;

from network import ESPNOW
e=ESPNOW()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'module' object isn't callable

Any thoughts?

[Gijs]

Hi,
We're working on getting the documentation out there. In the meantime you can find it here: https://github.com/pycom/pycom-documentation/pull/387/files (near the bottom):

from network import WLAN
from network import ESPNOW
import binascii
import time
# The callback to be registered when a message has been sent to a Peer
def espnow_tx(result):
    # "result" is the parameter in form of 2 element long tuple
    # "peer" is the Peer which the message has been sent to
    # "sent" is a boolean showing whether the message could be sent
	peer, sent = result
	mac = peer.addr()
	if(sent == False):
		print("Sending message to %s failed!" % binascii.hexlify(mac))
	else:
		print("Message sent to: %s" % (binascii.hexlify(mac)))
# The callback to be registered when a message has been received
def espnow_rx(result):
	# "result" is the parameter in form of 3 element long tuple
    # "mac" is the MAC address of the sender
    # "peer" is the Peer which the message has been received from. If message has been received from a not registered Peer this parameter is None
    # "msg" is the payload from the received message
    mac, peer, msg = result
	if(peer is not None):
		print("Message received from %s with content: %s" % (binascii.hexlify(mac), msg))
		peer.send("Sending back an answer")
# The ESPNOW module needs that WLAN is initialized
w = WLAN()
# Initialize the ESPNOW module
ESPNOW.init()
# Register the callback which will be called on TX
ESPNOW.on_send(espnow_tx)
# Register the callback which will be called on RX
ESPNOW.on_recv(espnow_rx)
# Add a dedicated Peer with MAC address: 11:22:33:44:55:66
p = ESPNOW.add_peer("112233445566")
# Send a message dedicated to the Peer
p.send("My Message")
# Sending 1 message to all Peers which are registered
ESPNOW.send(None, "Hello all Peers!")