I created a number of mini sensor node boards using an attiny841 and a nrf24l01+. Originally I was going to write my own program using the RF24 library but just recently decided to use mysensors. Below is my code for a simple door/window sensor.
/**
* The MySensors Arduino library handles the wireless radio link and protocol
* between your home built sensors/actuators and HA controller of choice.
* The sensors forms a self healing radio network with optional repeaters. Each
* repeater and gateway builds a routing tables in EEPROM which keeps track of the
* network topology allowing messages to be routed to nodes.
*
* Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
* Copyright (C) 2013-2015 Sensnology AB
* Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors
*
* Documentation: http://www.mysensors.org
* Support Forum: http://forum.mysensors.org
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
*******************************
*
* DESCRIPTION
*
* Simple binary switch example
* Connect button or door/window reed switch between
* digitial I/O pin 3 (BUTTON_PIN below) and GND.
* http://www.mysensors.org/build/binary
*/
// Enable debug prints to serial monitor
#define MY_DEBUG
// Enable and select radio type attached
#define MY_RADIO_RF24
//#define MY_RADIO_RFM69
#include <MySensors.h>
#include <Bounce2.h>
#define CHILD_ID 5
#define REED_SWITCH_PIN 3 // Arduino Digital I/O pin for button/reed switch
Bounce debouncer = Bounce();
int oldValue=-1;
// Change to V_LIGHT if you use S_LIGHT in presentation below
MyMessage msg(CHILD_ID,V_TRIPPED);
void setup()
{
// Setup the button
pinMode(REED_SWITCH_PIN,INPUT);
// Activate internal pull-up
digitalWrite(REED_SWITCH_PIN,HIGH);
// After setting up the button, setup debouncer
debouncer.attach(REED_SWITCH_PIN);
debouncer.interval(2);
}
void presentation() {
sendSketchInfo("Garage Door Sensor", "1.0");
// Register binary input sensor to gw (they will be created as child devices)
// You can use S_DOOR, S_MOTION or S_LIGHT here depending on your usage.
// If S_LIGHT is used, remember to update variable type you send in. See "msg" above.
present(CHILD_ID, S_DOOR);
}
// Check if digital input has changed and send in new value
void loop()
{
debouncer.update();
// Get the update value
int value = debouncer.read();
if (value != oldValue) {
// Send in the new value
send(msg.set(value==HIGH ? 1 : 0));
oldValue = value;
}
}
In the arduino IDE, I am getting the following errors when I try to compile. Before I start digging into the library files, is it possible to use mysensors with the nrf24l01 on the attiny841?
In file included from C:\Users\cdrum\Documents\Arduino\libraries\MySensors/MySensors.h:64:0,
from C:\Users\cdrum\Desktop\MySensors Sketches\WindowDoorSwitch_attiny\WindowDoorSwitch_attiny.ino:36:
C:\Users\cdrum\Documents\Arduino\libraries\MySensors/hal/architecture/AVR/MyHwAVR.cpp: In function 'void clearPendingInterrupt(uint8_t)':
C:\Users\cdrum\Documents\Arduino\libraries\MySensors/hal/architecture/AVR/MyHwAVR.cpp:73:2: error: 'EIFR' was not declared in this scope
EIFR = _BV(interrupt);
^~~~
C:\Users\cdrum\Documents\Arduino\libraries\MySensors/hal/architecture/AVR/MyHwAVR.cpp:73:2: note: suggested alternative: 'GIFR'
EIFR = _BV(interrupt);
^~~~
GIFR
C:\Users\cdrum\Documents\Arduino\libraries\MySensors/hal/architecture/AVR/MyHwAVR.cpp: In function 'void hwPowerDown(uint8_t)':
C:\Users\cdrum\Documents\Arduino\libraries\MySensors/hal/architecture/AVR/MyHwAVR.cpp:96:19: error: 'WDCE' was not declared in this scope
WDTCSR |= (1 << WDCE) | (1 << WDIE);
^~~~
C:\Users\cdrum\Documents\Arduino\libraries\MySensors/hal/architecture/AVR/MyHwAVR.cpp:96:19: note: suggested alternative: 'WDIE'
WDTCSR |= (1 << WDCE) | (1 << WDIE);
^~~~
WDIE
C:\Users\cdrum\Documents\Arduino\libraries\MySensors/hal/architecture/AVR/MyHwAVR.cpp:117:18: error: 'WDCE' was not declared in this scope
WDTCSR |= (1 << WDCE) | (1 << WDE);
^~~~
C:\Users\cdrum\Documents\Arduino\libraries\MySensors/hal/architecture/AVR/MyHwAVR.cpp:117:18: note: suggested alternative: 'WDIE'
WDTCSR |= (1 << WDCE) | (1 << WDE);
^~~~
WDIE
C:\Users\cdrum\Documents\Arduino\libraries\MySensors/hal/architecture/AVR/MyHwAVR.cpp: In function 'bool hwUniqueID(uint8_t (*)[16])':
C:\Users\cdrum\Documents\Arduino\libraries\MySensors/hal/architecture/AVR/MyHwAVR.cpp:277:31: error: 'OSCCAL' was not declared in this scope
*((uint8_t *)uniqueID + 3) = OSCCAL;
^~~~~~
C:\Users\cdrum\Documents\Arduino\libraries\MySensors/hal/architecture/AVR/MyHwAVR.cpp:277:31: note: suggested alternative: 'OSCCAL0'
*((uint8_t *)uniqueID + 3) = OSCCAL;
^~~~~~
OSCCAL0
C:\Users\cdrum\Documents\Arduino\libraries\MySensors/hal/architecture/AVR/MyHwAVR.cpp: In function 'uint16_t hwCPUVoltage()':
C:\Users\cdrum\Documents\Arduino\libraries\MySensors/hal/architecture/AVR/MyHwAVR.cpp:299:2: error: 'ADMUX' was not declared in this scope
ADMUX = (_BV(REFS0) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1));
^~~~~
C:\Users\cdrum\Documents\Arduino\libraries\MySensors/hal/architecture/AVR/MyHwAVR.cpp:299:2: note: suggested alternative: 'ADMUXA'
ADMUX = (_BV(REFS0) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1));
^~~~~
ADMUXA
C:\Users\cdrum\Documents\Arduino\libraries\MySensors/hal/architecture/AVR/MyHwAVR.cpp: In function 'uint16_t hwCPUFrequency()':
C:\Users\cdrum\Documents\Arduino\libraries\MySensors/hal/architecture/AVR/MyHwAVR.cpp:336:18: error: 'WDCE' was not declared in this scope
WDTCSR |= (1 << WDCE) | (1 << WDE);
^~~~
C:\Users\cdrum\Documents\Arduino\libraries\MySensors/hal/architecture/AVR/MyHwAVR.cpp:336:18: note: suggested alternative: 'WDIE'
WDTCSR |= (1 << WDCE) | (1 << WDE);
^~~~
WDIE
exit status 1
Error compiling for board ATtiny441/841 (No bootloader).
Thank You!
