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2b0511b Jul 11, 2017
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// **********************************************************************************
// This sketch is an example of how wireless programming can be achieved with a Moteino
// that was loaded with a custom 1k bootloader (DualOptiboot) that is capable of loading
// a new sketch from an external SPI flash chip
// The sketch includes logic to receive the new sketch 'over-the-air' and store it in
// the FLASH chip, then restart the Moteino so the bootloader can continue the job of
// actually reflashing the internal flash memory from the external FLASH memory chip flash image
// The handshake protocol that receives the sketch wirelessly by means of the RFM69 radio
// is handled by the SPIFLash/RFM69_OTA library, which also relies on the RFM69 library
// These libraries and custom 1k Optiboot bootloader are at: http://github.com/lowpowerlab
// **********************************************************************************
// Copyright Felix Rusu 2016, http://www.LowPowerLab.com/contact
// **********************************************************************************
// License
// **********************************************************************************
// This program is free software; you can redistribute it
// and/or modify it under the terms of the GNU General
// Public License as published by the Free Software
// Foundation; either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will
// be useful, but WITHOUT ANY WARRANTY; without even the
// implied warranty of MERCHANTABILITY or FITNESS FOR A
// PARTICULAR PURPOSE. See the GNU General Public
// License for more details.
//
// Licence can be viewed at
// http://www.gnu.org/licenses/gpl-3.0.txt
//
// Please maintain this license information along with authorship
// and copyright notices in any redistribution of this code
// **********************************************************************************
#include <RFM69.h> //get it here: https://github.com/lowpowerlab/RFM69
#include <RFM69_ATC.h> //get it here: https://github.com/lowpowerlab/RFM69
#include <RFM69_OTA.h> //get it here: https://github.com/lowpowerlab/RFM69
#include <SPIFlash.h> //get it here: https://github.com/lowpowerlab/spiflash
#include <SPI.h> //included with Arduino IDE install (www.arduino.cc)
//****************************************************************************************************************
//**** IMPORTANT RADIO SETTINGS - YOU MUST CHANGE/CONFIGURE TO MATCH YOUR HARDWARE TRANSCEIVER CONFIGURATION! ****
//****************************************************************************************************************
#define NODEID 123 // node ID used for this unit
#define NETWORKID 100
//Match frequency to the hardware version of the radio on your Moteino (uncomment one):
//#define FREQUENCY RF69_433MHZ
//#define FREQUENCY RF69_868MHZ
#define FREQUENCY RF69_915MHZ
#define FREQUENCY_EXACT 916000000
#define IS_RFM69HW_HCW //uncomment only for RFM69HW/HCW! Leave out if you have RFM69W/CW!
//*****************************************************************************************************************************
#define ENABLE_ATC //comment out this line to disable AUTO TRANSMISSION CONTROL
#define ATC_RSSI -75
//*****************************************************************************************************************************
//#define BR_300KBPS //run radio at max rate of 300kbps!
//*****************************************************************************************************************************
#define SERIAL_BAUD 115200
#define ACK_TIME 30 // # of ms to wait for an ack
#define ENCRYPTKEY "sampleEncryptKey" //(16 bytes of your choice - keep the same on all encrypted nodes)
#define BLINKPERIOD 500
#ifdef __AVR_ATmega1284P__
#define LED 15 // Moteino MEGAs have LEDs on D15
#define FLASH_SS 23 // and FLASH SS on D23
#else
#define LED 9 // Moteinos hsave LEDs on D9
#define FLASH_SS 8 // and FLASH SS on D8
#endif
#ifdef ENABLE_ATC
RFM69_ATC radio;
#else
RFM69 radio;
#endif
char input = 0;
long lastPeriod = -1;
//*****************************************************************************************************************************
// flash(SPI_CS, MANUFACTURER_ID)
// SPI_CS - CS pin attached to SPI flash chip (8 in case of Moteino)
// MANUFACTURER_ID - OPTIONAL, 0x1F44 for adesto(ex atmel) 4mbit flash
// 0xEF30 for windbond 4mbit flash
// 0xEF40 for windbond 16/64mbit flash
//*****************************************************************************************************************************
SPIFlash flash(FLASH_SS, 0xEF30); //EF30 for windbond 4mbit flash
void setup() {
pinMode(LED, OUTPUT);
Serial.begin(SERIAL_BAUD);
radio.initialize(FREQUENCY,NODEID,NETWORKID);
radio.encrypt(ENCRYPTKEY); //OPTIONAL
#ifdef FREQUENCY_EXACT
radio.setFrequency(FREQUENCY_EXACT); //set frequency to some custom frequency
#endif
#ifdef ENABLE_ATC
radio.enableAutoPower(ATC_RSSI);
#endif
#ifdef IS_RFM69HW_HCW
radio.setHighPower(); //must include this only for RFM69HW/HCW!
#endif
Serial.print("Start node...");
Serial.print("Node ID = ");
Serial.println(NODEID);
if (flash.initialize())
Serial.println("SPI Flash Init OK!");
else
Serial.println("SPI Flash Init FAIL!");
#ifdef BR_300KBPS
radio.writeReg(0x03, 0x00); //REG_BITRATEMSB: 300kbps (0x006B, see DS p20)
radio.writeReg(0x04, 0x6B); //REG_BITRATELSB: 300kbps (0x006B, see DS p20)
radio.writeReg(0x19, 0x40); //REG_RXBW: 500kHz
radio.writeReg(0x1A, 0x80); //REG_AFCBW: 500kHz
radio.writeReg(0x05, 0x13); //REG_FDEVMSB: 300khz (0x1333)
radio.writeReg(0x06, 0x33); //REG_FDEVLSB: 300khz (0x1333)
radio.writeReg(0x29, 240); //set REG_RSSITHRESH to -120dBm
#endif
}
void loop(){
// This part is optional, useful for some debugging.
// Handle serial input (to allow basic DEBUGGING of FLASH chip)
// ie: display first 256 bytes in FLASH, erase chip, write bytes at first 10 positions, etc
if (Serial.available() > 0) {
input = Serial.read();
if (input == 'd') //d=dump first page
{
Serial.println("Flash content:");
int counter = 0;
while(counter<=256){
Serial.print(flash.readByte(counter++), HEX);
Serial.print('.');
}
Serial.println();
}
else if (input == 'e')
{
Serial.print("Erasing Flash chip ... ");
flash.chipErase();
while(flash.busy());
Serial.println("DONE");
}
else if (input == 'i')
{
Serial.print("DeviceID: ");
Serial.println(flash.readDeviceId(), HEX);
}
else if (input == 'r')
{
Serial.print("Rebooting");
resetUsingWatchdog(true);
}
else if (input == 'R')
{
Serial.print("RFM69 registers:");
radio.readAllRegs();
}
else if (input >= 48 && input <= 57) //0-9
{
Serial.print("\nWriteByte("); Serial.print(input); Serial.print(")");
flash.writeByte(input-48, millis()%2 ? 0xaa : 0xbb);
}
}
// Check for existing RF data, potentially for a new sketch wireless upload
// For this to work this check has to be done often enough to be
// picked up when a GATEWAY is trying hard to reach this node for a new sketch wireless upload
if (radio.receiveDone())
{
Serial.print("Got [");
Serial.print(radio.SENDERID);
Serial.print(':');
Serial.print(radio.DATALEN);
Serial.print("] > ");
for (byte i = 0; i < radio.DATALEN; i++)
Serial.print((char)radio.DATA[i], HEX);
Serial.println();
CheckForWirelessHEX(radio, flash, false);
Serial.println();
}
//else Serial.print('.');
//*****************************************************************************************************************************
// Real sketch code here, let's blink the onboard LED
if ((int)(millis()/BLINKPERIOD) > lastPeriod)
{
lastPeriod++;
digitalWrite(LED, lastPeriod%2);
}
//*****************************************************************************************************************************
}