I'm having an issue where a simple temperature sensor sketch works fine powered by the ftdi serial converter but when powered by 2xAA batteries something isn't working right.
Log from when it's powered by 3.3v and working correctly:
77 TSM:INIT
77 TSF:WUR:MS=0
86 TSM:INIT:TSP OK
86 TSM:INIT:STATID=5
90 TSF:SID:OK,ID=5
92 TSM:FPAR
126 TSF:MSG:SEND,5-5-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
905 TSF:MSG:READ,0-0-5,s=255,c=3,t=8,pt=1,l=1,sg=0:0
911 TSF:MSG:FPAR OK,ID=0,D=1
2136 TSM:FPAR:OK
2136 TSM:ID
2138 TSM:ID:OK
2140 TSM:UPL
2146 TSF:MSG:SEND,5-5-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=0,st=OK:1
2152 TSF:MSG:READ,0-0-5,s=255,c=3,t=25,pt=1,l=1,sg=0:1
2158 TSF:MSG:PONG RECV,HP=1
2162 TSF:MSG:READ,0-0-5,s=255,c=3,t=25,pt=1,l=1,sg=0:1
2168 !TSF:MSG:PONG RECV,INACTIVE
2170 TSM:UPL:OK
2172 TSM:READY:ID=5,PAR=0,DIS=1
2179 TSF:MSG:SEND,5-5-0-0,s=255,c=3,t=15,pt=6,l=2,sg=0,ft=0,st=OK:0100
2187 TSF:MSG:READ,0-0-5,s=255,c=3,t=15,pt=6,l=2,sg=0:0100
2205 TSF:MSG:SEND,5-5-0-0,s=255,c=0,t=17,pt=0,l=5,sg=0,ft=0,st=OK:2.3.1
2217 TSF:MSG:SEND,5-5-0-0,s=255,c=3,t=6,pt=1,l=1,sg=0,ft=0,st=OK:0
4227 TSF:MSG:SEND,5-5-0-0,s=255,c=3,t=11,pt=0,l=18,sg=0,ft=0,st=OK:Temperature Sensor
4243 TSF:MSG:SEND,5-5-0-0,s=255,c=3,t=12,pt=0,l=3,sg=0,ft=0,st=OK:1.1
4257 TSF:MSG:SEND,5-5-0-0,s=0,c=0,t=6,pt=0,l=0,sg=0,ft=0,st=OK:
4265 MCO:REG:REQ
4268 TSF:MSG:SEND,5-5-0-0,s=255,c=3,t=26,pt=1,l=1,sg=0,ft=0,st=OK:2
4276 TSF:MSG:READ,0-0-5,s=255,c=3,t=27,pt=1,l=1,sg=0:1
4282 MCO:PIM:NODE REG=1
4284 MCO:BGN:STP
4290 TSF:MSG:SEND,5-5-0-0,s=1,c=0,t=30,pt=0,l=0,sg=0,ft=0,st=OK:
4298 MCO:BGN:INIT OK,TSP=1
4302 MCO:SLP:MS=750,SMS=0,I1=255,M1=255,I2=255,M2=255
4308 TSF:TDI:TSL
4311 MCO:SLP:WUP=-1
4313 TSF:TRI:TSB
4349 TSF:MSG:SEND,5-5-0-0,s=0,c=1,t=0,pt=7,l=5,sg=0,ft=0,st=OK:28.0
4362 TSF:MSG:SEND,5-5-0-0,s=255,c=3,t=0,pt=1,l=1,sg=0,ft=0,st=OK:100
4372 TSF:MSG:SEND,5-5-0-0,s=1,c=1,t=38,pt=7,l=5,sg=0,ft=0,st=OK:3.39
4380 MCO:SLP:MS=30000,SMS=0,I1=255,M1=255,I2=255,M2=255
4386 TSF:TDI:TSL
log from when it's not working:
16 MCO:BGN:INIT NODE,CP=RNNNA---,REL=255,VER=2.3.1
26 MCO:BGN:BFR
30 TSM:INIT
30 TSF:WUR:MS=0
38 TSM:INIT:TSP OK
40 TSM:INIT:STATID=5
43 TSF:SID:OK,ID=5
45 TSM:FPAR
79 TSF:MSG:SEND,5-5-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
1054 TSF:MSG:READ,0-0-5,s=255,c=3,t=8,pt=1,l=1,sg=0:0
1060 TSF:MSG:FPAR OK,ID=0,D=1
2091 TSM:FPAR:OK
2091 TSM:ID
2093 TSM:ID:OK
2095 TSM:UPL
2099 TSF:MSG:SEND,5-5-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=0,st=OK:1
2107 TSF:MSG:READ,0-0-5,s=255,c=3,t=25,pt=1,l=1,sg=0:1
2113 TSF:MSG:PONG RECV,HP=1
2115 TSM:UPL:OK
2117 TSM:READY:ID=5,PAR=0,DIS=1
2121 TSF:MSG:SEND,5-5-0-0,s=255,c=3,t=15,pt=6,l=2,sg=0,ft=0,st=OK:0100
2129 TSF:MSG:READ,0-0-5,s=255,c=3,t=15,pt=6,l=2,sg=0:0100
2140 TSF:MSG:SEND,5-5-0-0,s=255,c=0,t=17,pt=0,l=5,sg=0,ft=0,st=OK:2.3.1
2150 TSF:MSG:SEND,5-5-0-0,s=255,c=3,t=6,pt=1,l=1,sg=0,ft=0,st=OK:0
4161 TSF:MSG:SEND,5-5-0-0,s=255,c=3,t=11,pt=0,l=18,sg=0,ft=0,st=OK:Temperature Sensor
4171 TSF:MSG:SEND,5-5-0-0,s=255,c=3,t=12,pt=0,l=3,sg=0,ft=0,st=OK:1.1
4179 MCO:REG:REQ
4184 TSF:MSG:SEND,5-5-0-0,s=255,c=3,t=26,pt=1,l=1,sg=0,ft=0,st=OK:2
4190 TSF:MSG:READ,0-0-5,s=255,c=3,t=27,pt=1,l=1,sg=0:1
4196 MCO:PIM:NODE REG=1
4200 MCO:BGN:STP
4202 TSF:MSG:SEND,5-5-0-0,s=1,c=0,t=30,pt=0,l=0,sg=0,ft=0,st=OK:
4210 MCO:BGN:INIT OK,TSP=1
4214 MCO:SLP:MS=94,SMS=0,I1=255,M1=255,I2=255,M2=255
4220 TSF:TDI:TSL
4222 MCO:SLP:WUP=-1
4225 TSF:TRI:TSB
4231 MCO:SLP:MS=30000,SMS=0,I1=255,M1=255,I2=255,M2=255
4237 TSF:TDI:TSL
sketch:
/**
* 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
*
* Example sketch showing how to send in DS1820B OneWire temperature readings back to the controller
* http://www.mysensors.org/build/temp
*/
// Enable debug prints to serial monitor
#define MY_DEBUG
// Enable and select radio type attached
#define MY_RADIO_RF24
//#define MY_RADIO_RFM69
#define MY_NODE_ID 5
#include <SPI.h>
#include <MySensors.h>
#include <DallasTemperature.h>
#include <OneWire.h>
#define BATT_SENSOR
#ifdef BATT_SENSOR
#define REPORT_VOLTAGE
#endif
#define COMPARE_TEMP 0 // Send temperature only if changed? 1 = Yes 0 = No
#define ONE_WIRE_BUS 4 // Pin where dallase sensor is connected
#define ONE_WIRE_GND 5
#define ONE_WIRE_VCC 3
#define MAX_ATTACHED_DS18B20 16
unsigned long SLEEP_TIME = 30000; // Sleep time between reads (in milliseconds)
const uint8_t TEMP_TIME = 12; //at least every nth time battery is reported
const uint8_t BATT_TIME = 12; //when also BATT-LEVEL is reportet
const float BATT_100 = 3; //3.3V for CR2032, 3V for 2xAA
const float BATT_0 = 2.2;
//float lastTemperature;
uint8_t lastTempSent = 0;//, lastHumSent = 0;
OneWire oneWire(ONE_WIRE_BUS); // Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
DallasTemperature sensors(&oneWire); // Pass the oneWire reference to Dallas Temperature.
float lastTemperature[MAX_ATTACHED_DS18B20];
int numSensors=0;
bool receivedConfig = false;
bool metric = true;
// Initialize temperature message
MyMessage msg(0,V_TEMP);
#ifdef REPORT_VOLTAGE
MyMessage msgBatt(1, V_VOLTAGE);
#endif
#ifdef BATT_SENSOR
uint8_t battReport = BATT_TIME - 1; //First report at startup
long oldvalue = 0;
#endif
void before()
{
#ifdef ONE_WIRE_VCC
pinMode(ONE_WIRE_VCC, OUTPUT);
digitalWrite(ONE_WIRE_VCC, HIGH);
#endif
#ifdef ONE_WIRE_GND
pinMode(ONE_WIRE_GND, OUTPUT);
digitalWrite(ONE_WIRE_GND, LOW);
#endif
#ifdef VCCGND_PINS
pinMode(VCC, OUTPUT);
digitalWrite(VCC, HIGH);
pinMode(GND, OUTPUT);
digitalWrite(GND, LOW);
#endif
// Startup up the OneWire library
sensors.begin();
}
void setup()
{
// requestTemperatures() will not block current thread
sensors.setWaitForConversion(false);
#ifdef REPORT_VOLTAGE
present(1, S_MULTIMETER);
#endif
}
void presentation() {
// Send the sketch version information to the gateway and Controller
sendSketchInfo("Temperature Sensor", "1.1");
// Fetch the number of attached temperature sensors
numSensors = sensors.getDeviceCount();
// Present all sensors to controller
for (int i=0; i<numSensors && i<MAX_ATTACHED_DS18B20; i++) {
present(i, S_TEMP);
}
}
void loop()
{
boolean tempsent = false;
// Fetch temperatures from Dallas sensors
sensors.requestTemperatures();
// query conversion time and sleep until conversion completed
int16_t conversionTime = sensors.millisToWaitForConversion(sensors.getResolution());
// sleep() call can be replaced by wait() call if node need to process incoming messages (or if node is repeater)
sleep(conversionTime);
// Read temperatures and send them to controller
for (int i=0; i<numSensors && i<MAX_ATTACHED_DS18B20; i++) {
// Fetch and round temperature to one decimal
float temperature = static_cast<float>(static_cast<int>((getControllerConfig().isMetric?sensors.getTempCByIndex(i):sensors.getTempFByIndex(i)) * 10.)) / 10.;
// Only send data if temperature has changed and no error
#if COMPARE_TEMP == 1
if (lastTemperature[i] != temperature && temperature != -127.00 && temperature != 85.00) {
#else
if (temperature != -127.00 && temperature != 85.00) {
#endif
// Send in the new temperature
send(msg.setSensor(i).set(temperature,1));
// Save new temperatures for next compare
lastTemperature[i]=temperature;
lastTempSent = 0;
tempsent = true;
}
}
#ifdef BATT_SENSOR
if (++battReport >= BATT_TIME && tempsent) {
//gw.sleep(10);
long value = readVcc();
if (value != oldvalue) {
int percent = (( (float)(value) / 1000 ) - BATT_0) / (BATT_100 - BATT_0) * 100;
percent = (percent > 100) ? 100 : percent;
percent = (percent < 0) ? 0 : percent;
sendBatteryLevel(percent);
#ifdef REPORT_VOLTAGE
send(msgBatt.set((float)(value) / 1000, 2));
#endif
}
oldvalue = value;
battReport = 0;
}
#endif
sleep(SLEEP_TIME);
}
long readVcc() {
// Read 1.1V reference against AVcc
// set the reference to Vcc and the measurement to the internal 1.1V reference
#if defined(__AVR_ATmega32U4__) || defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
ADMUX = _BV(REFS0) | _BV(MUX4) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1);
#elif defined (__AVR_ATtiny24__) || defined(__AVR_ATtiny44__) || defined(__AVR_ATtiny84__)
ADMUX = _BV(MUX5) | _BV(MUX0);
#elif defined (__AVR_ATtiny25__) || defined(__AVR_ATtiny45__) || defined(__AVR_ATtiny85__)
ADMUX = _BV(MUX3) | _BV(MUX2);
#else
ADMUX = _BV(REFS0) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1);
#endif
delay(2); // Wait for Vref to settle
ADCSRA |= _BV(ADSC); // Start conversion
while (bit_is_set(ADCSRA, ADSC)); // measuring
uint8_t low = ADCL; // must read ADCL first - it then locks ADCH
uint8_t high = ADCH; // unlocks both
long result = (high << 8) | low;
result = 1125300L / result; // Calculate Vcc (in mV); 1125300 = 1.1*1023*1000
return result; // Vcc in millivolts
}
i tried a 47uf cap that I had laying around on the AA setup but nothing changes...
