Keep trying to get a server and client between two ATmega328P microcontrollers and 2 nRF24L01 and I have downloaded the RadioHead library for it. Whenever I run it I can't get the end result and get the error of Error, no serial data received. I am lost and any help is appreciated.
For the Client:
#include <SPI.h>
#include <RH_NRF24.h>
RH_NRF24 nrf24;
void setup()
{
Serial.begin(9600);
while (!Serial)
;
if (!nrf24.init())
Serial.println("init failed");
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");
uint8_t data[] = "Hello World!";
nrf24.send(data, sizeof(data));
nrf24.waitPacketSent();
uint8_t buf[RH_NRF24_MAX_MESSAGE_LEN];
uint8_t len = sizeof(buf);
if (nrf24.waitAvailableTimeout(500))
{
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);
}
For the Server:
#include <SPI.h>
#include <RH_NRF24.h>
RH_NRF24 nrf24;
void setup()
{
Serial.begin(9600);
while (!Serial)
;
if (!nrf24.init())
Serial.println("init failed");
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())
{
uint8_t buf[RH_NRF24_MAX_MESSAGE_LEN];
uint8_t len = sizeof(buf);
if (nrf24.recv(buf, &len))
{
Serial.print("got request: ");
Serial.println((char*)buf);
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");
}
}
}
I have it connected the correct way I believe. It could be wrong on the 328P side though... I haven't had a specific pinout or tutorial for the chip with the nRF24L01 so the pins just go into D7-8, and D10-12 with them being in the "order" I have seen from other tutorials using the transceiver. I also have a 10-micro farad capacitor between VCC and ground as i read. The code I am sure of though, I've checked that over several times.
The specific error is "A fatal error occurred: Failed to connect to ESP32-S2: No serial data received, Failed uploading: uploading error: exit status 2."
I used this troubleshooting guide after it wasn't working and to make sure I was hooking up the nRF24L01 right and then bought the 10-micro Farad capacitor as well from that.
The original tutorial I went off of is:
These are the original two I have gone off of and still am with after a few variations I have tried to get it to work.
The pinout that I have used for the microcontroller is this:
Nice picture but it tells nothing about your design or how you have it connected to what and what is powering it for starters. There are many CAD (Computer Aided Design) software packages that are available at no cost such as KiCad being my favorite. Normal design procedure is to generate a schematic and then check that to be sure it meets the requirements. If so then build a prototype and update the schematic as you make changes.
Here is the chip I bought off Amazon, I read that it was a clone, and the picture I posted matches what I have visually. I've had several videos/tutorials tell me which board to use and I haven't been completely sure which one to use. On the IDE I have the board as ATMegaZero ESP32-S2 because it was the closest to what the chip says it is. I have tried Arduino Nano and I received the same error. I wouldn't know which other board to use.
Sorry, I meant the same error when I chose the ESP32 Dev board and ATmegazero ESP32-S2. Those were the boards a few videos I watched a few days ago said. This is the first time I am getting this so you've helped me make some progress.
#include <SPI.h>
#include <RH_NRF24.h>
// Singleton instance of the radio driver
RH_NRF24 nrf24(8, 10);
// RH_NRF24 nrf24(8, 7); // use this to be electrically compatible with Mirf
// RH_NRF24 nrf24(8, 10);// For Leonardo, need explicit SS pin
// RH_NRF24 nrf24(8, 7); // For RFM73 on Anarduino Mini
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);
}
This is from the client, it prints the line INIT FAILED when it "Defaults after init are 2.402 GHz (channel 2), 2Mbps, 0dBm"
got it, I'll take a step back and try and make sure I'm not getting over my head! The wiring I will look over again and redo it based on a nano tutorial and let you know.
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