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sandeepmistry / arduino-LoRa

An Arduino library for sending and receiving data using LoRa radios.
MIT License
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How can we wake up a node for receive packet? #494

Closed hoseinaghajari closed 2 years ago

hoseinaghajari commented 2 years ago

hi dear friends: my project is sending a message to receiver and receiver sends answer(acknowledge) to sender. I use 2 arduino uno and 2 RA01-sx1278. what I want to have is lowest power consumption so for doing that I tried to set sender to sleep mode and wake it up just before sending a message. Notice that I know when I want to send a message just in sender side so I can manage sleeping and waking function in sender side. but what I should do for receiver? I can set it to sleeping mode after receive_and_send_acknowledge but my problem is that when I should wake receiver up? The receiver don't know when I want to send a packet to it.

IoTThinks commented 2 years ago

You need to do it on your own if you want to use raw LoRa. You can take a look at LoRaWAN A, B and C to get / copy the idea.

If you don't have any server to cache the sending packets, then likely you need to sync the time between the two nodes.

hoseinaghajari commented 2 years ago

A or B or C LoRaWAN®-based network is made up of end devices, gateways, a network server, and application servers. But I only have end device and gateway. End device send data to gateway. Do gateway always have to stay awake? gateway send data to End device. Do End device always have to stay awake? certainly I don't want them to be always awake.

hoseinaghajari commented 2 years ago

how much current consumption of continuous receive mode?

hoseinaghajari commented 2 years ago

any help?

IoTThinks commented 2 years ago

Google: LoRaWAN Class A, B C. Google SX1278 data sheet. Search for Power consumption.

Choose the first link. BTW, your question is not really relevant to the library.