I have tried on numerous occassions to connect my nodemcu to a nrf24l01 as recever and another nodemcu as transmitter, the nodemcu transmitter nrf seems to transmit the data structure variables but the data output is always ovf, the receiving nodemcu does not seem to connect andnreceives no data.
My Connections to both nodemcu and nrf
nodemcu nrf24l01
gnd gnd pin 1
3.3v vcc pin 2
d2 ce pin 3
d3 csn pin 4
sclk d5 sclk pin 5
mosi d7 mosi pin 6
miso d6 miso pin 7
code receiver
radio.begin();
radio.setChannel(115);
radio.setPALevel(RF24_PA_MAX);
radio.setDataRate( RF24_250KBPS ) ;
radio.openReadingPipe(1, deviceID);
radio.enableAckPayload();
radio.writeAckPayload(1, ackData, sizeof(ackData));
radio.startListening();
}
void loop()
{
if ( radio.available())
{
radio.read(dataReceived, sizeof(dataReceived));
Serial.print("Data Received Number0 = ");
Serial.print(dataReceived[0]);
Serial.print("Data Received Number1 = ");
Serial.print(dataReceived[1]);
radio.writeAckPayload(1, ackData, sizeof(ackData));
ackData[0] += valChange;
}
digitalWrite(led1, HIGH);
delay(250);
digitalWrite(led1, LOW);
delay(250);
}
code transmitter
radio.begin();
radio.setPALevel(RF24_PA_MAX);
radio.setDataRate( RF24_250KBPS ) ;
radio.enableAckPayload();
radio.setRetries(3, 5);
}
void loop() {
currentMillis = millis();
if (currentMillis - prevMillis >= txIntervalMillis) {
radio.openWritingPipe(slaveID[0]);
dataToSend[0] = txValue_1;
dataToSend[1] = txValue_2;
bool rslt;
rslt = radio.write(dataToSend, sizeof(dataToSend));
Serial.print("\nRSLT (1 = success) ");
Serial.println(rslt);
Serial.print("Data Sent ");
Serial.print(dataToSend[0]);
Serial.print(" ");
Serial.println(dataToSend[1]);
if (radio.isAckPayloadAvailable()) {
radio.read(ackMessg, ackMessgLen);
Serial.print("Acknowledge Received: ");
Serial.print(ackMessg[0]);
Serial.print(" ");
Serial.print(ackMessg[1]);
}
prevMillis = millis();
}
digitalWrite(led1, HIGH);
delay(250);
digitalWrite(led1, LOW);
}
Any help will be appreciated.