Без рубрики
Беспроводная связь Arduino радиомодулями nRF24L01+ на 2.4GHz
server
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 |
#include <SPI.h> #include <RH_NRF24.h> RH_NRF24 nrf24; void setup() { Serial.begin(9600); while (!Serial) ; // wait for serial port to connect. Needed for Leonardo only if (!nrf24.init()) Serial.println("init failed"); // Defaults after init are 2.402 GHz (channel 2), 2Mbps, 0dBm if (!nrf24.setChannel(1)) Serial.println("setChannel failed"); if (!nrf24.setRF(RH_NRF24::DataRate2Mbps, RH_NRF24::TransmitPower0dBm)) Serial.println("setRF failed"); } void loop() { if (nrf24.available()) { // Should be a message for us now uint8_t buf[RH_NRF24_MAX_MESSAGE_LEN]; uint8_t len = sizeof(buf); if (nrf24.recv(buf, &len)) { // NRF24::printBuffer("request: ", buf, len); Serial.print("got request: "); Serial.println((char*)buf); // Send a reply uint8_t data[] = "And hello back to you"; nrf24.send(data, sizeof(data)); nrf24.waitPacketSent(); Serial.println("Sent a reply"); } else { Serial.println("recv failed"); } } } |
[collapse]
client
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 |
#include <SPI.h> #include <RH_NRF24.h> RH_NRF24 nrf24; void setup() { Serial.begin(9600); while (!Serial) ; // wait for serial port to connect. Needed for Leonardo only if (!nrf24.init()) Serial.println("init failed"); // Defaults after init are 2.402 GHz (channel 2), 2Mbps, 0dBm if (!nrf24.setChannel(1)) Serial.println("setChannel failed"); if (!nrf24.setRF(RH_NRF24::DataRate2Mbps, RH_NRF24::TransmitPower0dBm)) Serial.println("setRF failed"); } void loop() { Serial.println("Sending to nrf24_server"); // Send a message to nrf24_server uint8_t data[] = "Hello World!"; nrf24.send(data, sizeof(data)); nrf24.waitPacketSent(); // Now wait for a reply uint8_t buf[RH_NRF24_MAX_MESSAGE_LEN]; uint8_t len = sizeof(buf); if (nrf24.waitAvailableTimeout(500)) { // Should be a reply message for us now if (nrf24.recv(buf, &len)) { Serial.print("got reply: "); Serial.println((char*)buf); } else { Serial.println("recv failed"); } } else { Serial.println("No reply, is nrf24_server running?"); } delay(400); } |
[collapse]
