Board Definition

[charles-d-burton]

Excuse my newness to all of this but I'm trying to update the RF69HCW module to support the Raspberry Pi Pico and I can't figure out where I'm supposed to find the definitions. I've tried using the boards.txt file definition but that doesn't seem to work and I've also tried setting it to RP2040 but that also doesn't seem to work. For reference this is the line I'm trying to update:

https://github.com/charles-d-burton/RFM69/blob/2006deb76454dee5facc2241721d3434f0812b73/RFM69.h#L60

[PontusO]

You should not have to change anything in the environment.

Simply instantiate the class using the following constructor and you should be good to go.

RFM69(uint8_t slaveSelectPin=RF69_SPI_CS, uint8_t interruptPin=RF69_IRQ_PIN, bool isRFM69HW_HCW=false, SPIClass *spi=nullptr);

Make sure you identify the correct SPI pins as well as the cs and irq pins when you connect your module.

Den 9 mars 2022 20:42:17 skrev Charles @.***>:

Excuse my newness to all of this but I'm trying to update the RF69HCW module to support the Raspberry Pi Pico and I can't figure out where I'm supposed to find the definitions. I've tried using the boards.txt file definition but that doesn't seem to work and I've also tried setting it to RP2040 but that also doesn't seem to work. For reference this is the line I'm trying to update: https://github.com/charles-d-burton/RFM69/blob/2006deb76454dee5facc2241721d3434f0812b73/RFM69.h#L60 — Reply to this email directly, view it on GitHub, or unsubscribe. Triage notifications on the go with GitHub Mobile for iOS or Android. You are receiving this because you are subscribed to this thread.Message ID: @.***>

[charles-d-burton]

You mean rather than update the library just call the constructor directly?

[PontusO]

You wouldn't call the constructor directly, it gets called when the class is instantiated.

For instance RFM69 rfm69(slave_select_pin, irq_pin, false, SPI); Would create rfm69 using the pins defined in slave_select_pin and irq_pin and the default SPI interface.

[charles-d-burton]

Hmm, doesn't seem to like that. The implementation of this library is different than what the other library is expecting.

/home/charles/Arduino/pico-test/pico-test.ino:25:34: error: no matching function for call to 'RFM69::RFM69(int, int, bool, SPIClassRP2040&)'
   25 | RFM69 radio(CSPIN,IRQPIN,true,SPI);
      |                                  ^

 In file included from /home/charles/Arduino/pico-test/pico-test.ino:2:
/home/charles/Arduino/libraries/RFM69/RFM69.h:205:5: note: candidate: 'RFM69::RFM69(uint8_t, uint8_t, bool, arduino::SPIClass*)'
  205 |     RFM69(uint8_t slaveSelectPin=RF69_SPI_CS, uint8_t interruptPin=RF69_IRQ_PIN, bool isRFM69HW_HCW=false, SPIClass *spi=nullptr);

/home/charles/Arduino/libraries/RFM69/RFM69.h:205:118: note:   no known conversion for argument 4 from 'SPIClassRP2040' to 'arduino::SPIClass*' {aka 'arduino::HardwareSPI*'}

Did a bunch of searching around and I'm finding precious little about how to coerce the types into the correct format.

[charles-d-burton]

I did the definition like this

#define CSPIN         17
#define IRQPIN        1
// Create a library object for our RFM69HCW module:
RFM69 radio(CSPIN,IRQPIN,true,SPI);

[charles-d-burton]

Alright, got it to compile with this:

#define CSPIN         17
#define IRQPIN        1

// Create a library object for our RFM69HCW module:
RFM69 radio(CSPIN,IRQPIN,true,&SPI);

Which is great but that didn't get me any further. Still getting an RSSI of zero.

[charles-d-burton]

For reference here's the whole thing

// LowPowerLabs RFM69 Library
#include <RFM69.h>
// SPI Library
#include <SPI.h>
// Addresses for this node. CHANGE THESE FOR EACH NODE!

#define NETWORKID     0   // Must be the same for all nodes
#define MYNODEID      2   // My node ID
#define TONODEID      1   // Destination node ID

#define FREQUENCY     RF69_915MHZ

// AES encryption (or not):

#define ENCRYPT       true // Set to "true" to use encryption
#define ENCRYPTKEY    "passwordpassword" // Use the same 16-byte key on all nodes

// Use ACKnowledge when sending messages (or not):
#define USEACK        true // Request ACKs or not

#define CSPIN         17
#define IRQPIN        1

// Create a library object for our RFM69HCW module:
RFM69 radio(CSPIN,IRQPIN,true,&SPI);

void setup() {
  SPI.begin(); 
    // put your setup code here, to run once:
  Serial.begin(115200);
   // initialize digital pin LED_BUILTIN as an output.
  pinMode(LED_BUILTIN, OUTPUT);
  Serial.print("Node ");
  Serial.print(MYNODEID,DEC);
  Serial.println(" ready");
  // Initialize the RFM69HCW:
  radio.initialize(FREQUENCY, MYNODEID, NETWORKID);
  radio.setHighPower(); // Always use this for RFM69HCW

  // Turn on encryption if desired:

  if (ENCRYPT) {
    radio.encrypt(ENCRYPTKEY);
  }

  delay(1000);
}

void loop() {
  Serial.println(radio.canSend());
  Serial.print("RSSI: ");
  Serial.println(radio.RSSI);
  #if defined(RP2040)
  Serial.println("pico defined");
  #endif
  delay(500);
}

[charles-d-burton]

Ok, progress. Now I'm getting somewhere but for some reason it's hanging. When I upload this sketch the serial console never comes back. I think it doesn't like something about my SPI setup.

// LowPowerLabs RFM69 Library
#include <RFM69.h>
// SPI Library
#include <SPI.h>
// Addresses for this node. CHANGE THESE FOR EACH NODE!

#define NETWORKID     0   // Must be the same for all nodes
#define MYNODEID      2   // My node ID
#define TONODEID      1   // Destination node ID

#define FREQUENCY     RF69_915MHZ

// AES encryption (or not):

#define ENCRYPT       true // Set to "true" to use encryption
#define ENCRYPTKEY    "passwordpassword" // Use the same 16-byte key on all nodes

// Use ACKnowledge when sending messages (or not):
#define USEACK        true // Request ACKs or not

#define CSPIN         17
#define IRQPIN        1

// Create a library object for our RFM69HCW module:
RFM69 radio(CSPIN,IRQPIN,true,&SPI);

void setup() {
  SPI.setRX(16);
  SPI.setTX(19);
  SPI.setCS(17);
  SPI.setSCK(18);
  SPI.begin(); 
    // put your setup code here, to run once:
  Serial.begin(115200);
   // initialize digital pin LED_BUILTIN as an output.
  pinMode(LED_BUILTIN, OUTPUT);
  Serial.print("Node ");
  Serial.print(MYNODEID,DEC);
  Serial.println(" ready");
  // Initialize the RFM69HCW:
  radio.initialize(FREQUENCY, MYNODEID, NETWORKID);
  radio.setHighPower(); // Always use this for RFM69HCW

  // Turn on encryption if desired:

  if (ENCRYPT) {
    radio.encrypt(ENCRYPTKEY);
  }

  delay(1000);
}

void loop() {
  //Serial.println(radio.canSend());
  Serial.print("RSSI: ");
  Serial.println(radio.readRSSI());
  delay(500);
}

[PontusO]

Try putting a while (!Serial) delay(10); after the Serial.begin statement. This will ensure the USB link is up before printing to it. Otherwise it looks good to me.

[charles-d-burton]

Awesome thanks, that definitely got the Serial connection working again. Still nothing from the chip though. Seriously, thank you for all your help, I've definitely learned a lot here. I'm wondering if this is something with the IRQ, I'm setting the IRQ pin to what I think is the hardware interrupt for the Pico.

[charles-d-burton]

Forcing the IRQ doesn't do it either

// LowPowerLabs RFM69 Library
#include <RFM69.h>
// SPI Library
#include <SPI.h>
// Addresses for this node. CHANGE THESE FOR EACH NODE!
volatile byte state = LOW;

#define NETWORKID     0   // Must be the same for all nodes
#define MYNODEID      2   // My node ID
#define TONODEID      1   // Destination node ID

#define FREQUENCY     RF69_915MHZ

// AES encryption (or not):

#define ENCRYPT       true // Set to "true" to use encryption
#define ENCRYPTKEY    "passwordpassword" // Use the same 16-byte key on all nodes

// Use ACKnowledge when sending messages (or not):
#define USEACK        true // Request ACKs or not

#define CSPIN         17
#define IRQPIN        1

// Create a library object for our RFM69HCW module:
RFM69 radio(CSPIN,IRQPIN,true,&SPI);

void setup() {
  SPI.setRX(16);
  SPI.setTX(19);
  SPI.setCS(17);
  SPI.setSCK(18);  
  SPI.begin(); 
    // put your setup code here, to run once:
  Serial.begin(115200);
  while (!Serial)delay(10);
  pinMode(IRQPIN, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(IRQPIN), blink, CHANGE);
   // initialize digital pin LED_BUILTIN as an output.
  pinMode(LED_BUILTIN, OUTPUT);
  Serial.print("Node ");
  Serial.print(MYNODEID,DEC);
  Serial.println(" ready");
  // Initialize the RFM69HCW:
  radio.initialize(FREQUENCY, MYNODEID, NETWORKID);
  radio.setHighPower(); // Always use this for RFM69HCW

  // Turn on encryption if desired:

  if (ENCRYPT) {
    radio.encrypt(ENCRYPTKEY);
  }

  delay(1000);
}

void loop() {
  Serial.println(radio.canSend());
  Serial.print("RSSI: ");
  Serial.println(radio.readRSSI());
  Serial.print("Temp: ");
  Serial.println(radio.readTemperature());
  digitalWrite(LED_BUILTIN, state);
  blink();
  delay(500);
}

void blink() {
  state = !state;
}

[PontusO]

At this point I think you will get better support at the LowPowerLab github. Maybe there are some debug logs that can be enabled that will shed some light on your problems.

[earlephilhower]

Thanks, @PontusO , for the assist. I'll close this issue. @charles-d-burton can refer to it when/if he opens one in the library repo.