Hi folks,
I’m having the data corruption issue between my Photon with RFM69 and a moteino with the same transceiver. Using the same code with 2 moteinos I have no issues but once I move the code to the Photon data packets are sent corrupted. I simply used the examples that came with the RFM69 library and removed the SPI.h and SPIFLASH.h libraries and code associated with them on the Photon.
Photon Code:
// This #include statement was automatically added by the Particle IDE.
#include "RFM69/RFM69.h"
#define NODEID 1
#define NETWORKID 100
#define GATEWAYID 99
#define FREQUENCY RF69_433MHZ //Match this with the version of your Moteino! (others: RF69_433MHZ, RF69_868MHZ)
#define KEY "thisIsEncryptKey" //has to be same 16 characters/bytes on all nodes, not more not less!
#define LED D7
#define SERIAL_BAUD 115200
#define ACK_TIME 30 // # of ms to wait for an ack
int TRANSMITPERIOD = 300; //transmit a packet to gateway so often (in ms)
byte sendSize=0;
boolean requestACK = false;
RFM69 radio;
typedef struct {
int nodeId; //store this nodeId
unsigned long uptime; //uptime in ms
float temp; //temperature maybe?
} Payload;
Payload theData;
void setup() {
Serial.begin(SERIAL_BAUD);
radio.initialize(FREQUENCY,NODEID,NETWORKID);
//radio.setHighPower(); //uncomment only for RFM69HW!
radio.encrypt(KEY);
char buff[50];
sprintf(buff, "\nTransmitting at %d Mhz...", FREQUENCY==RF69_433MHZ ? 433 : FREQUENCY==RF69_868MHZ ? 868 : 915);
Serial.println(buff);
}
long lastPeriod = -1;
void loop() {
//process any serial input
if (Serial.available() > 0)
{
char input = Serial.read();
if (input >= 48 && input <= 57) //[0,9]
{
TRANSMITPERIOD = 100 * (input-48);
if (TRANSMITPERIOD == 0) TRANSMITPERIOD = 1000;
Serial.print("\nChanging delay to ");
Serial.print(TRANSMITPERIOD);
Serial.println("ms\n");
}
if (input == 'r') //d=dump register values
radio.readAllRegs();
//if (input == 'E') //E=enable encryption
// radio.encrypt(KEY);
//if (input == 'e') //e=disable encryption
// radio.encrypt(null);
}
//check for any received packets
if (radio.receiveDone())
{
Serial.print('[');Serial.print(radio.SENDERID, DEC);Serial.print("] ");
for (byte i = 0; i < radio.DATALEN; i++)
Serial.print((char)radio.DATA[i]);
Serial.print(" [RX_RSSI:");Serial.print(radio.readRSSI());Serial.print("]");
if (radio.ACKRequested())
{
radio.sendACK();
Serial.print(" - ACK sent");
delay(10);
}
Blink(LED,5);
Serial.println();
}
int currPeriod = millis()/TRANSMITPERIOD;
if (currPeriod != lastPeriod)
{
//fill in the struct with new values
theData.nodeId = NODEID;
theData.uptime = millis();
theData.temp = 91.23; //it's hot!
Serial.print("Sending struct (");
Serial.print(sizeof(theData));
Serial.print(" bytes) ... ");
if (radio.sendWithRetry(GATEWAYID, (const void*)(&theData), sizeof(theData)))
Serial.print(" ok!");
else Serial.print(" nothing...");
Serial.println();
Blink(LED,3);
lastPeriod=currPeriod;
}
}
void Blink(byte PIN, int DELAY_MS)
{
pinMode(PIN, OUTPUT);
digitalWrite(PIN,HIGH);
delay(DELAY_MS);
digitalWrite(PIN,LOW);
}
Moteino (Arduino Uno Compatible running at 16Mhz and 3.3Vdc) Code:
#include <RFM69.h>
#include <SPI.h>
#include <SPIFlash.h>
#define NODEID 99
#define NETWORKID 100
#define FREQUENCY RF69_433MHZ //Match this with the version of your Moteino! (others: RF69_433MHZ, RF69_868MHZ)
#define KEY "thisIsEncryptKey" //has to be same 16 characters/bytes on all nodes, not more not less!
#define LED 9
#define SERIAL_BAUD 115200
#define ACK_TIME 30 // # of ms to wait for an ack
RFM69 radio;
SPIFlash flash(8, 0xEF30); //EF40 for 16mbit windbond chip
bool promiscuousMode = false; //set to 'true' to sniff all packets on the same network
typedef struct {
int nodeId; //store this nodeId
unsigned long uptime; //uptime in ms
float temp; //temperature maybe?
} Payload;
Payload theData;
void setup() {
Serial.begin(SERIAL_BAUD);
delay(10);
radio.initialize(FREQUENCY,NODEID,NETWORKID);
//radio.setHighPower(); //uncomment only for RFM69HW!
radio.encrypt(KEY);
radio.promiscuous(promiscuousMode);
char buff[50];
sprintf(buff, "\nListening at %d Mhz...", FREQUENCY==RF69_433MHZ ? 433 : FREQUENCY==RF69_868MHZ ? 868 : 915);
Serial.println(buff);
if (flash.initialize())
Serial.println("SPI Flash Init OK!");
else
Serial.println("SPI Flash Init FAIL! (is chip present?)");
}
byte ackCount=0;
void loop() {
//process any serial input
if (Serial.available() > 0)
{
char input = Serial.read();
if (input == 'r') //d=dump all register values
radio.readAllRegs();
if (input == 'E') //E=enable encryption
radio.encrypt(KEY);
if (input == 'e') //e=disable encryption
radio.encrypt(null);
if (input == 'p')
{
promiscuousMode = !promiscuousMode;
radio.promiscuous(promiscuousMode);
Serial.print("Promiscuous mode ");Serial.println(promiscuousMode ? "on" : "off");
}
if (input == 'd') //d=dump flash area
{
Serial.println("Flash content:");
int counter = 0;
while(counter<=256){
Serial.print(flash.readByte(counter++), HEX);
Serial.print('.');
}
while(flash.busy());
Serial.println();
}
if (input == 'D')
{
Serial.print("Deleting Flash chip content... ");
flash.chipErase();
while(flash.busy());
Serial.println("DONE");
}
if (input == 'i')
{
Serial.print("DeviceID: ");
word jedecid = flash.readDeviceId();
Serial.println(jedecid, HEX);
}
}
if (radio.receiveDone())
{
Serial.print('[');Serial.print(radio.SENDERID, DEC);Serial.print("] ");
Serial.print(" [RX_RSSI:");Serial.print(radio.readRSSI());Serial.print("]");
if (promiscuousMode)
{
Serial.print("to [");Serial.print(radio.TARGETID, DEC);Serial.print("] ");
}
if (radio.DATALEN != sizeof(Payload))
Serial.print("Invalid payload received, not matching Payload struct!");
else
{
theData = *(Payload*)radio.DATA; //assume radio.DATA actually contains our struct and not something else
Serial.print(" nodeId=");
Serial.print(theData.nodeId);
Serial.print(" uptime=");
Serial.print(theData.uptime);
Serial.print(" temp=");
Serial.print(theData.temp);
}
if (radio.ACKRequested())
{
byte theNodeID = radio.SENDERID;
radio.sendACK();
Serial.print(" - ACK sent.");
// When a node requests an ACK, respond to the ACK
// and also send a packet requesting an ACK (every 3rd one only)
// This way both TX/RX NODE functions are tested on 1 end at the GATEWAY
if (ackCount++%3==0)
{
Serial.print(" Pinging node ");
Serial.print(theNodeID);
Serial.print(" - ACK...");
delay(3); //need this when sending right after reception .. ?
if (radio.sendWithRetry(theNodeID, "ACK TEST", 8, 0)) // 0 = only 1 attempt, no retries
Serial.print("ok!");
else Serial.print("nothing");
}
}
Serial.println();
Blink(LED,3);
}
}
void Blink(byte PIN, int DELAY_MS)
{
pinMode(PIN, OUTPUT);
digitalWrite(PIN,HIGH);
delay(DELAY_MS);
digitalWrite(PIN,LOW);
}
I left the SPI.h and SPIFLASH.h libraries on the Moteino code because it does have the flash memory chip installed.
I’m getting a message saying “Invalid payload received, not matching Payload struct!” because the size of the struct received is not matching the format on hand even through they both do have the same format.
Could the RFM69 chip be having a timing issue because the Photon is so much faster than the ATmega328P on the Moteino?
Any help would be greatly appreciated.
Thanks in advance!
