Zgateway rfm69 (#88)
* some minor correction after coadcy checks * Put serial communication speed as a parameter in user_config.h * complete gateway file receiving ok sending ko #32 * add rfm69 to CI * change receiver key and minor improvments #32 now ok on receiving and sending with RFM69 * add schema and tested pinout for RFM69/RF/IR wiring #32 * RFM69 library add
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/*
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OpenMQTTGateway - ESP8266 or Arduino program for home automation
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Act as a wifi or ethernet gateway between your RF/infrared IR signal and a MQTT broker
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Send and receiving command by MQTT
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This gateway enables to:
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- receive MQTT data from a topic and send RF signal corresponding to the received MQTT data with an RFM69 module
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- publish MQTT data to a different topic related to received signal from an RFM69 module
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Copyright: (c)Felix Rusu LowPowerLab.com
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Library and code by Felix Rusu - felix@lowpowerlab.com
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Modification of the code nanohab from bbx10 https://github.com/bbx10/nanohab
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Copyright: (c)Florian ROBERT
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This file is part of OpenMQTTGateway.
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OpenMQTTGateway is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenMQTTGateway is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef ZgatewayRFM69
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#include <RFM69.h> //https://www.github.com/lowpowerlab/rfm69
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#include <SPI.h>
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#include <EEPROM.h>
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char RadioConfig[128];
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// vvvvvvvvv Global Configuration vvvvvvvvvvv
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struct _GLOBAL_CONFIG {
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uint32_t checksum;
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char rfmapname[32];
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char encryptkey[16+1];
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uint8_t networkid;
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uint8_t nodeid;
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uint8_t powerlevel; // bits 0..4 power leve, bit 7 RFM69HCW 1=true
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uint8_t rfmfrequency;
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};
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#define GC_POWER_LEVEL (pGC->powerlevel & 0x1F)
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#define GC_IS_RFM69HCW ((pGC->powerlevel & 0x80) != 0)
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#define SELECTED_FREQ(f) ((pGC->rfmfrequency==f)?"selected":"")
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struct _GLOBAL_CONFIG *pGC;
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// vvvvvvvvv Global Configuration vvvvvvvvvvv
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uint32_t gc_checksum() {
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uint8_t *p = (uint8_t *)pGC;
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uint32_t checksum = 0;
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p += sizeof(pGC->checksum);
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for (size_t i = 0; i < (sizeof(*pGC) - 4); i++) {
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checksum += *p++;
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}
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return checksum;
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}
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#ifdef ESP8266
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void eeprom_setup() {
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EEPROM.begin(4096);
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pGC = (struct _GLOBAL_CONFIG *)EEPROM.getDataPtr();
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// if checksum bad init GC else use GC values
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if (gc_checksum() != pGC->checksum) {
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trc("Factory reset");
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memset(pGC, 0, sizeof(*pGC));
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strcpy_P(pGC->encryptkey, ENCRYPTKEY);
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strcpy_P(pGC->rfmapname, RFM69AP_NAME);
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pGC->networkid = NETWORKID;
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pGC->nodeid = NODEID;
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pGC->powerlevel = ((IS_RFM69HCW)?0x80:0x00) | POWER_LEVEL;
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pGC->rfmfrequency = FREQUENCY;
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pGC->checksum = gc_checksum();
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EEPROM.commit();
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}
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}
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#endif
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RFM69 radio;
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void setupRFM69(void) {
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#ifdef ESP8266
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eeprom_setup();
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#endif
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int freq;
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static const char PROGMEM JSONtemplate[] =
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R"({"msgType":"config","freq":%d,"rfm69hcw":%d,"netid":%d,"power":%d})";
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char payload[128];
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radio = RFM69(RFM69_CS, RFM69_IRQ, GC_IS_RFM69HCW, RFM69_IRQN);
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// Initialize radio
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if (!radio.initialize(pGC->rfmfrequency, pGC->nodeid, pGC->networkid))
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{
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trc(F("RFM69 initialization failed"));
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}
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if (GC_IS_RFM69HCW) {
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radio.setHighPower(); // Only for RFM69HCW & HW!
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}
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radio.setPowerLevel(GC_POWER_LEVEL); // power output ranges from 0 (5dBm) to 31 (20dBm)
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if (pGC->encryptkey[0] != '\0') radio.encrypt(pGC->encryptkey);
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trc(F("RFM69 Listening and transmitting at"));
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switch (pGC->rfmfrequency) {
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case RF69_433MHZ:
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freq = 433;
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break;
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case RF69_868MHZ:
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freq = 868;
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break;
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case RF69_915MHZ:
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freq = 915;
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break;
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case RF69_315MHZ:
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freq = 315;
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break;
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default:
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freq = -1;
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break;
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}
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trc(String(freq));
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size_t len = snprintf_P(RadioConfig, sizeof(RadioConfig), JSONtemplate,
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freq, GC_IS_RFM69HCW, pGC->networkid, GC_POWER_LEVEL);
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if (len >= sizeof(RadioConfig)) {
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trc("\n\n*** RFM69 config truncated ***\n");
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}
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}
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boolean RFM69toMQTT(void) {
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//check if something was received (could be an interrupt from the radio)
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if (radio.receiveDone())
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{
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uint8_t data[RF69_MAX_DATA_LEN];
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//save packet because it may be overwritten
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memcpy(data, (void *)radio.DATA, radio.DATALEN);
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client.publish(subjectRFM69toMQTT,(char *)data);
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trc(F("Data received"));
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trc((const char *)data);
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//check if sender wanted an ACK
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if (radio.ACKRequested())
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{
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radio.sendACK();
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}
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radio.receiveDone(); //put radio in RX mode
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//updateClients(senderId, rssi, (const char *)data);
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return true;
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} else {
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radio.receiveDone(); //put radio in RX mode
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return false;
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}
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}
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boolean MQTTtoRFM69(char * topicOri, char * datacallback) {
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int loops;
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uint32_t startMillis;
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static uint32_t deltaMillis = 0;
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// RF DATA ANALYSIS
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//We look into the subject to see if a special RF protocol is defined
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String topic = topicOri;
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int valueRCV = defaultRFM69ReceiverId; //default receiver id value
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int pos = topic.lastIndexOf(RFM69receiverKey);
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if (pos != -1){
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pos = pos + +strlen(RFM69receiverKey);
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valueRCV = (topic.substring(pos,pos + 3)).toInt();
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trc(F("RFM69 receiver ID:"));
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trc(String(valueRCV));
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}
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if ((topic == subjectMQTTtoRFM69) && (valueRCV == defaultRFM69ReceiverId)){
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trc(F("MQTTtoRFM69 default"));
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loops = 10;
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startMillis = millis();
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while (loops--) {
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if(radio.sendWithRetry(valueRCV, datacallback, strlen(datacallback)+1)) {
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deltaMillis = millis() - startMillis;
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Serial.print(" OK ");
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Serial.println(deltaMillis);
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// Acknowledgement to the GTWRF topic
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boolean result = client.publish(subjectGTWRFM69toMQTT, datacallback);
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if (result)trc(F("Ack published"));
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return true;
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break;
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}
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else {
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Serial.print("!");
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}
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delay(50);
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}
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if (loops <= 0) {
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deltaMillis = 0;
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trc(F("RFM69 sending failed"));
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return false;
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}
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} else if (valueRCV != defaultRFM69ReceiverId) {
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trc(F("MQTTtoRFM69 user parameters"));
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loops = 10;
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startMillis = millis();
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while (loops--) {
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if(radio.sendWithRetry(valueRCV, datacallback, strlen(datacallback)+1)) {
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deltaMillis = millis() - startMillis;
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Serial.print(" OK ");
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Serial.println(deltaMillis);
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// Acknowledgement to the GTWRF topic
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boolean result = client.publish(subjectGTWRFM69toMQTT, datacallback);
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if (result)trc(F("Ack published"));
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return true;
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break;
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}
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else {
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Serial.print("!");
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}
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delay(50);
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}
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if (loops <= 0) {
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deltaMillis = 0;
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trc(F("RFM69 sending failed"));
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return false;
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}
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}
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}
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#endif
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