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/* |
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Radio |
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RFM69 Radio Manager for ESP8266 |
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Based on sample code by Felix Rusu - http://LowPowerLab.com/contact |
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Copyright (C) 2016 by Xose Pérez <xose dot perez at gmail dot com> |
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This program 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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This program 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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#pragma once |
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#include <RFM69.h> |
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#include <RFM69_ATC.h> |
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#include <SPI.h> |
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// ----------------------------------------------------------------------------- |
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// Configuration |
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// ----------------------------------------------------------------------------- |
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#define PING_EVERY 3 |
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#define RETRIES 2 |
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#define REQUESTACK 1 |
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#define RADIO_DEBUG 0 |
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#define SEND_PACKET_ID 1 |
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#define PACKET_SEPARATOR ':' |
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/* |
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typedef struct { |
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unsigned long messageID; |
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unsigned char packetID; |
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unsigned char senderID; |
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unsigned char targetID; |
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char * name; |
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char * value; |
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int16_t rssi; |
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} packet_t; |
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*/ |
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typedef void (*TMessageCallback)(packet_t *); |
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class RFM69Manager: public RFM69_ATC { |
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public: |
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RFM69Manager(uint8_t slaveSelectPin=RF69_SPI_CS, uint8_t interruptPin=RF69_IRQ_PIN, bool isRFM69HW=false, uint8_t interruptNum=RF69_IRQ_NUM): |
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RFM69_ATC(slaveSelectPin, interruptPin, isRFM69HW, interruptNum) {}; |
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bool initialize(uint8_t frequency, uint8_t nodeID, uint8_t networkID, const char* key, uint8_t gatewayID = 0, int16_t targetRSSI = -70) { |
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bool ret = RFM69_ATC::initialize(frequency, nodeID, networkID); |
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encrypt(key); |
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_gatewayID = gatewayID; |
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if (_gatewayID > 0) enableAutoPower(targetRSSI); |
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if (_isRFM69HW) setHighPower(); |
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#if RADIO_DEBUG |
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char buff[50]; |
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sprintf(buff, "[RFM69] Working at %d Mhz", frequency == RF69_433MHZ ? 433 : frequency == RF69_868MHZ ? 868 : 915); |
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Serial.println(buff); |
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Serial.print(F("[RFM69] Node: ")); |
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Serial.println(nodeID); |
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Serial.print(F("[RFM69] Network: ")); |
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Serial.println(networkID); |
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if (gatewayID == 0) { |
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Serial.println("[RFM69] This node is a gateway"); |
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} else { |
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Serial.print(F("[RFM69] Gateway: ")); |
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Serial.println(gatewayID); |
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} |
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Serial.println(F("[RFM69] Auto Transmission Control (ATC) enabled")); |
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#endif |
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return ret; |
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} |
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void promiscuous(bool promiscuous) { |
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RFM69_ATC::promiscuous(promiscuous); |
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#if RADIO_DEBUG |
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if (_promiscuousMode) { |
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Serial.println(F("[RFM69] Promiscuous mode ON")); |
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} else { |
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Serial.println(F("[RFM69] Promiscuous mode OFF")); |
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} |
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#endif |
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} |
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void onMessage(TMessageCallback fn) { |
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_callback = fn; |
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} |
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void separator(char sep) { |
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_separator = sep; |
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} |
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bool loop() { |
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boolean ret = false; |
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if (receiveDone()) { |
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uint8_t senderID = SENDERID; |
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uint8_t targetID = _promiscuousMode ? TARGETID : _address; |
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int16_t rssi = RSSI; |
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uint8_t length = DATALEN; |
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char buffer[length + 1]; |
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strncpy(buffer, (const char *) DATA, length); |
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buffer[length] = 0; |
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// Do not send ACKs in promiscuous mode, |
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// we want to listen without being heard |
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if (!_promiscuousMode) { |
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if (ACKRequested()) sendACK(); |
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} |
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uint8_t parts = 1; |
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for (uint8_t i=0; i<length; i++) { |
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if (buffer[i] == _separator) ++parts; |
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} |
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if (parts > 1) { |
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char sep[2] = {_separator, 0}; |
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uint8_t packetID = 0; |
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char * name = strtok(buffer, sep); |
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char * value = strtok(NULL, sep); |
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if (parts > 2) { |
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char * packet = strtok(NULL, sep); |
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packetID = atoi(packet); |
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} |
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_message.messageID = ++_receiveCount; |
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_message.packetID = packetID; |
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_message.senderID = senderID; |
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_message.targetID = targetID; |
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_message.name = name; |
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_message.value = value; |
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_message.rssi = rssi; |
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ret = true; |
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if (_callback != NULL) { |
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_callback(&_message); |
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} |
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} |
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} |
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return ret; |
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} |
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bool send(uint8_t destinationID, char * name, char * value, uint8_t retries = RETRIES, bool requestACK = REQUESTACK) { |
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char message[RF69_MAX_DATA_LEN]; |
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#if SEND_PACKET_ID |
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if (++_sendCount == 0) _sendCount = 1; |
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snprintf(message, RF69_MAX_DATA_LEN-1, "%s%c%s%c%d", name, _separator, value, _separator, _sendCount); |
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#else |
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snprintf(message, RF69_MAX_DATA_LEN-1, "%s%c%s", name, _separator, value); |
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#endif |
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#if RADIO_DEBUG |
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Serial.print(F("[RFM69] Sending: ")); |
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Serial.print(message); |
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#endif |
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bool ret = true; |
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if (retries > 0) { |
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ret = sendWithRetry(destinationID, message, strlen(message), retries); |
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} else { |
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RFM69_ATC::send(destinationID, message, strlen(message), requestACK); |
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} |
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#if RADIO_DEBUG |
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if (ret) { |
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Serial.println(" OK"); |
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} else { |
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Serial.println(" KO"); |
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} |
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#endif |
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return ret; |
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} |
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bool send(char * name, char * value, uint8_t retries = RETRIES) { |
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return send(_gatewayID, name, value, retries, false); |
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} |
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bool send(char * name, char * value, bool requestACK = REQUESTACK) { |
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return send(_gatewayID, name, value, 0, requestACK); |
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} |
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packet_t * getMessage() { |
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return &_message; |
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} |
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protected: |
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packet_t _message; |
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TMessageCallback _callback = NULL; |
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uint8_t _gatewayID = 0; |
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unsigned long _receiveCount = 0; |
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#if SEND_PACKET_ID |
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unsigned char _sendCount = 0; |
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#endif |
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unsigned int _ackCount = 0; |
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char _separator = PACKET_SEPARATOR; |
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// --------------------------------------------------------------------- |
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// overriding select the RFM69 transceiver (save SPI settings, set CS low) |
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void select() { |
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noInterrupts(); |
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#if defined (SPCR) && defined (SPSR) |
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// save current SPI settings |
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_SPCR = SPCR; |
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_SPSR = SPSR; |
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#endif |
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// set RFM69 SPI settings |
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SPI.setDataMode(SPI_MODE0); |
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SPI.setBitOrder(MSBFIRST); |
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#if defined(ARDUINO_ARCH_ESP8266) |
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SPI.setClockDivider(SPI_CLOCK_DIV2); // speeding it up for the ESP8266 |
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#else |
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SPI.setClockDivider(SPI_CLOCK_DIV4); |
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#endif |
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digitalWrite(_slaveSelectPin, LOW); |
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} |
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}; |