#ifdef ZgatewayRFM69
#include <RFM69.h> //https://www.github.com/lowpowerlab/rfm69
#include <SPI.h>
#include <EEPROM.h>
char RadioConfig[128];
// vvvvvvvvv Global Configuration vvvvvvvvvvv
struct _GLOBAL_CONFIG {
uint32_t checksum;
char rfmapname[32];
char encryptkey[16+1];
uint8_t networkid;
uint8_t nodeid;
uint8_t powerlevel; // bits 0..4 power leve, bit 7 RFM69HCW 1=true
uint8_t rfmfrequency;
};
#define GC_POWER_LEVEL (pGC->powerlevel & 0x1F)
#define GC_IS_RFM69HCW ((pGC->powerlevel & 0x80) != 0)
#define SELECTED_FREQ(f) ((pGC->rfmfrequency==f)?"selected":"")
struct _GLOBAL_CONFIG *pGC;
// vvvvvvvvv Global Configuration vvvvvvvvvvv
uint32_t gc_checksum() {
uint8_t *p = (uint8_t *)pGC;
uint32_t checksum = 0;
p += sizeof(pGC->checksum);
for (size_t i = 0; i < (sizeof(*pGC) - 4); i++) {
checksum += *p++;
}
return checksum;
}
#if defined(ESP8266) || defined(ESP32)
void eeprom_setup() {
EEPROM.begin(4096);
pGC = (struct _GLOBAL_CONFIG *)EEPROM.getDataPtr();
// if checksum bad init GC else use GC values
if (gc_checksum() != pGC->checksum) {
trc(F("Factory reset"));
memset(pGC, 0, sizeof(*pGC));
strcpy_P(pGC->encryptkey, ENCRYPTKEY);
strcpy_P(pGC->rfmapname, RFM69AP_NAME);
pGC->networkid = NETWORKID;
pGC->nodeid = NODEID;
pGC->powerlevel = ((IS_RFM69HCW)?0x80:0x00) | POWER_LEVEL;
pGC->rfmfrequency = FREQUENCY;
pGC->checksum = gc_checksum();
EEPROM.commit();
}
}
#endif
RFM69 radio;
void setupRFM69(void) {
#if defined(ESP8266) || defined(ESP32)
eeprom_setup();
#endif
int freq;
static const char PROGMEM JSONtemplate[] =
R"({"msgType":"config","freq":%d,"rfm69hcw":%d,"netid":%d,"power":%d})";
char payload[128];
radio = RFM69(RFM69_CS, RFM69_IRQ, GC_IS_RFM69HCW, RFM69_IRQN);
// Initialize radio
if (!radio.initialize(pGC->rfmfrequency, pGC->nodeid, pGC->networkid))
{
trc(F("ZgatewayRFM69 initialization failed"));
}
if (GC_IS_RFM69HCW) {
radio.setHighPower(); // Only for RFM69HCW & HW!
}
radio.setPowerLevel(GC_POWER_LEVEL); // power output ranges from 0 (5dBm) to 31 (20dBm)
if (pGC->encryptkey[0] != '\0') radio.encrypt(pGC->encryptkey);
trc(F("ZgatewayRFM69 Listening and transmitting at"));
switch (pGC->rfmfrequency) {
case RF69_433MHZ:
freq = 433;
break;
case RF69_868MHZ:
freq = 868;
break;
case RF69_915MHZ:
freq = 915;
break;
case RF69_315MHZ:
freq = 315;
break;
default:
freq = -1;
break;
}
trc(freq);
size_t len = snprintf_P(RadioConfig, sizeof(RadioConfig), JSONtemplate,
freq, GC_IS_RFM69HCW, pGC->networkid, GC_POWER_LEVEL);
if (len >= sizeof(RadioConfig)) {
trc(F("\n\n*** RFM69 config truncated ***\n"));
}
}
boolean RFM69toMQTT(void) {
//check if something was received (could be an interrupt from the radio)
if (radio.receiveDone())
{
trc(F("Creating RFM69 buffer"));
StaticJsonBuffer<JSON_MSG_BUFFER> jsonBuffer;
JsonObject& RFM69data = jsonBuffer.createObject();
uint8_t data[RF69_MAX_DATA_LEN+1]; // For the null character
uint8_t SENDERID = radio.SENDERID;
uint8_t DATALEN = radio.DATALEN;
uint16_t RSSI = radio.RSSI;
//save packet because it may be overwritten
memcpy(data, (void *)radio.DATA, DATALEN);
data[DATALEN] = '\0'; // Terminate the string
// Ack as soon as possible
//check if sender wanted an ACK
if (radio.ACKRequested())
{
radio.sendACK();
}
//updateClients(senderId, rssi, (const char *)data);
trc(F("Data received"));
trc((const char *)data);
char buff[sizeof(subjectRFM69toMQTT)+4];
sprintf(buff, "%s/%d", subjectRFM69toMQTT, SENDERID);
RFM69data.set("data", (char *)data);
RFM69data.set("rssi", (int)radio.RSSI);
RFM69data.set("senderid", (int)radio.SENDERID);
pub(buff,RFM69data);
return true;
} else {
return false;
}
}
#ifdef simpleReceiving
void MQTTtoRFM69(char * topicOri, char * datacallback) {
if(strstr(topicOri, subjectMQTTtoRFM69) != NULL){
trc(F("MQTTtoRFM69 data analysis"));
char data[RF69_MAX_DATA_LEN+1];
memcpy(data, (void *)datacallback, RF69_MAX_DATA_LEN);
data[RF69_MAX_DATA_LEN] = '\0';
//We look into the subject to see if a special RF protocol is defined
String topic = topicOri;
int valueRCV = defaultRFM69ReceiverId; //default receiver id value
int pos = topic.lastIndexOf(RFM69receiverKey);
if (pos != -1){
pos = pos + +strlen(RFM69receiverKey);
valueRCV = (topic.substring(pos,pos + 3)).toInt();
trc(F("RFM69 receiver ID:"));
trc(valueRCV);
}
if(radio.sendWithRetry(valueRCV, data, strlen(data),10)) {
trc(F(" OK "));
// Acknowledgement to the GTWRF topic
char buff[sizeof(subjectGTWRFM69toMQTT)+4];
sprintf(buff, "%s/%d", subjectGTWRFM69toMQTT, radio.SENDERID);
pub(buff, data);
} else {
trc(F("RFM69 sending failed"));
}
}
}
#endif
#ifdef jsonReceiving
void MQTTtoRFM69(char * topicOri, JsonObject& RFM69data) {
if (strcmp(topicOri,subjectMQTTtoRFM69) == 0){
const char * data = RFM69data["data"];
trc(F("MQTTtoRFM69 json data analysis"));
if(data){
trc(F("MQTTtoRFM69 data ok"));
int valueRCV = RFM69data["receiverid"]| defaultRFM69ReceiverId; //default receiver id value
trc(F("RFM69 receiver ID:"));
trc(valueRCV);
if(radio.sendWithRetry(valueRCV, data, strlen(data),10)) {
trc(F(" OK "));
// Acknowledgement to the GTWRF topic
pub(subjectGTWRFM69toMQTT, RFM69data);// we acknowledge the sending by publishing the value to an acknowledgement topic, for the moment even if it is a signal repetition we acknowledge also
} else {
trc(F("MQTTtoRFM69 sending failed"));
}
}else{
trc(F("MQTTtoRFM69 Fail reading from json"));
}
}
}
#endif
#endif`Preformatted text``Preformatted text`