mirror of
https://github.com/1technophile/OpenMQTTGateway.git
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107 lines
3.1 KiB
C++
107 lines
3.1 KiB
C++
//***********************************************************************************************************
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// Sample sketch that achieves the lowest power on a Moteino of ~6.5uA
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// Everything is put to sleep including the MCU, the radio (if any) and the FlashMem chip
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//**** SETTINGS *********************************************************************************************
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#define WITH_RFM69 //comment this line out if you don't have a RFM69 on your Moteino
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#define WITH_SPIFLASH //comment this line out if you don't have the FLASH-MEM chip on your Moteino
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//***********************************************************************************************************
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#include <Arduino.h> // assumes Arduino IDE v1.0 or greater
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#include <avr/sleep.h>
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#include <avr/wdt.h>
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#include <avr/power.h>
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#ifdef __AVR_ATmega1284P__
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#define LED 15 // Moteino MEGAs have LEDs on D15
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#define FLASH_SS 23 // and FLASH SS on D23
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#else
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#define LED 9 // Moteinos have LEDs on D9
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#define FLASH_SS 8 // and FLASH SS on D8
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#endif
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#if defined(WITH_RFM69) || defined(WITH_SPIFLASH)
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#include <SPI.h> //comes with Arduino IDE (www.arduino.cc)
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#if defined(WITH_RFM69)
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#include <RFM69.h> //get it here: https://www.github.com/lowpowerlab/rfm69
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RFM69 radio;
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#define NETWORKID 100
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#define NODEID 123
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#define FREQUENCY RF69_915MHZ
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#endif
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#if defined(WITH_SPIFLASH)
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#include <SPIFlash.h> //get it here: https://www.github.com/lowpowerlab/spiflash
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SPIFlash flash(FLASH_SS, 0xEF30); //EF30 for 4mbit Windbond chip (W25X40CL)
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#endif
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#endif
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//watchdog interrupt
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ISR (WDT_vect) {
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wdt_disable();
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}
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void setup () {
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#ifdef WITH_RFM69
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radio.initialize(FREQUENCY,NODEID,NETWORKID);
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radio.sleep();
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#endif
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#ifdef WITH_SPIFLASH
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if (flash.initialize())
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flash.sleep();
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#endif
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// //optional blink to know radio/flash sleeping went OK
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// pinMode(LED, OUTPUT);
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// digitalWrite(LED, HIGH);
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// delay(30);
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// digitalWrite(LED, LOW);
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// delay(50);
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// digitalWrite(LED, HIGH);
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// delay(50);
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// digitalWrite(LED, LOW);
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for (uint8_t i=0; i<=A5; i++)
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{
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#ifdef WITH_RFM69
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if (i == RF69_SPI_CS) continue;
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#endif
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#ifdef WITH_SPIFLASH
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if (i == FLASH_SS) continue;
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#endif
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pinMode(i, OUTPUT);
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digitalWrite(i, LOW);
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}
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power_timer1_disable();
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power_timer2_disable();
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power_twi_disable();
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}
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void loop ()
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{
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// disable ADC
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ADCSRA = 0;
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// clear various "reset" flags
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MCUSR = 0;
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// allow changes, disable reset
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WDTCSR = bit (WDCE) | bit (WDE);
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//set interrupt mode and an interval
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WDTCSR = bit (WDIE) | bit (WDP3) | bit (WDP0); //set WDIE, and 8 seconds delay
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wdt_reset(); //pat the dog...
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set_sleep_mode (SLEEP_MODE_PWR_DOWN);
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noInterrupts(); // timed sequence follows
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sleep_enable();
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// turn off brown-out enable in software
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// BODS must be set to one and BODSE must be set to zero within four clock cycles
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MCUCR = bit (BODS) | bit (BODSE);
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// The BODS bit is automatically cleared after three clock cycles
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MCUCR = bit (BODS);
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interrupts();
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sleep_cpu();
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//cancel sleep as a precaution
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sleep_disable();
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}
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