ESP-now esp_now_add_peer question

[mistergreen2025]

Concerning esp_now_add_peer
Do I only add a peer on the transmitter device and NOT on the receiver or can I on add both?

[ahsrabrifat]

The transmitter must know the MAC address of the receiver to send data, so you call esp_now_add_peer() on the transmitter to register the receiver’s MAC address. Adding peer on the receiver is needed only if you need to send data back.