WifiEspNowClass Class Reference

#include <WifiEspNow.h>

Public Types
using	RxCallback = void(*)(const uint8_t mac[WIFIESPNOW_ALEN], const uint8_t *buf, size_t count, void *arg)

Public Member Functions
bool	begin ()
	Initialize ESP-NOW.
void	end ()
	Stop ESP-NOW.
bool	setPrimaryKey (const uint8_t key[WIFIESPNOW_KEYLEN])
	Set primary key, also known as KOK or PMK.
int	listPeers (WifiEspNowPeerInfo *peers, int maxPeers) const
	List current peers.
bool	hasPeer (const uint8_t mac[WIFIESPNOW_ALEN]) const
	Test whether peer exists.
bool	addPeer (const uint8_t mac[WIFIESPNOW_ALEN], int channel=0, const uint8_t key[WIFIESPNOW_KEYLEN]=nullptr, int netif=ESP_IF_WIFI_AP)
	Add a peer or change peer channel.
bool	removePeer (const uint8_t mac[WIFIESPNOW_ALEN])
	Remove a peer.
void	onReceive (RxCallback cb, void *arg)
	Set receive callback.
bool	send (const uint8_t mac[WIFIESPNOW_ALEN], const uint8_t *buf, size_t count)
	Send a message.
WifiEspNowSendStatus	getSendStatus () const
	Retrieve status of last sent message.

Member Typedef Documentation

RxCallback

using WifiEspNowClass::RxCallback = void (*)(const uint8_t mac[WIFIESPNOW_ALEN], const uint8_t* buf, size_t count, void* arg)

Member Function Documentation

addPeer()

bool WifiEspNowClass::addPeer	(	const uint8_t	mac[WIFIESPNOW_ALEN],
		int	channel = 0,
		const uint8_t	key[WIFIESPNOW_KEYLEN] = nullptr,
		int	netif = ESP_IF_WIFI_AP
	)

Add a peer or change peer channel.

Parameters

mac	peer MAC address.
channel	peer channel, 0 for current channel.
key	encryption key, nullptr to disable encryption.
netif	(ESP32 only) WiFi interface.

Returns

whether success.

begin()

bool WifiEspNowClass::begin

(

)

Initialize ESP-NOW.

Returns

whether success.

end()

void WifiEspNowClass::end

(

)

Stop ESP-NOW.

getSendStatus()

WifiEspNowSendStatus WifiEspNowClass::getSendStatus ( ) const

inline

Retrieve status of last sent message.

hasPeer()

bool WifiEspNowClass::hasPeer

(

const uint8_t

mac[WIFIESPNOW_ALEN]

)

const

Test whether peer exists.

Parameters

mac	peer MAC address.

Returns

whether peer exists.

listPeers()

int WifiEspNowClass::listPeers	(	WifiEspNowPeerInfo *	peers,
		int	maxPeers
	)		const

List current peers.

Parameters

[out]	peers	buffer for peer information.
	maxPeers	buffer size.

Returns

total number of peers, std::min(retval,maxPeers) is written to peers .

onReceive()

void WifiEspNowClass::onReceive	(	RxCallback	cb,
		void *	arg
	)

Set receive callback.

Parameters

cb	the callback.
arg	an arbitrary argument passed to the callback.

Note

Only one callback is allowed; this replaces any previous callback.

removePeer()

bool WifiEspNowClass::removePeer

(

const uint8_t

mac[WIFIESPNOW_ALEN]

)

Remove a peer.

Parameters

mac	peer MAC address.

Returns

whether success.

send()

bool WifiEspNowClass::send	(	const uint8_t	mac[WIFIESPNOW_ALEN],
		const uint8_t *	buf,
		size_t	count
	)

Send a message.

Parameters

mac	destination MAC address, nullptr for all peers.
buf	payload.
count	payload size, must not exceed WIFIESPNOW_MAXMSGLEN .

Returns

whether success (message queued for transmission).

setPrimaryKey()

bool WifiEspNowClass::setPrimaryKey

(

const uint8_t

key[WIFIESPNOW_KEYLEN]

)

Set primary key, also known as KOK or PMK.

Parameters

key	primary encryption key.

Returns

whether success.

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The documentation for this class was generated from the following files:

• /home/runner/work/WifiEspNow/WifiEspNow/src/WifiEspNow.h
• /home/runner/work/WifiEspNow/WifiEspNow/src/WifiEspNow.cpp