alarm function
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@ -31,6 +31,7 @@
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#include <Arduino.h>
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#include <avr/sleep.h>
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#include <avr/wdt.h>
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#include <avr/interrupt.h>
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#include <tinySPI.h>
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@ -67,6 +68,10 @@
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SHT21 sensor;
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#endif
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#ifdef HAS_ALARM
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volatile boolean alarm = false;
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#endif
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// Global Variable to Track Deep Sleep
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uint16_t sleep_interval;
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@ -127,6 +132,12 @@ void sleep(uint16_t s)
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s = s/8;
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sleep_interval = 0;
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while (sleep_interval < s) {
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// in case of alarm, break loop and transmit immediatly
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#ifdef HAS_ALARM
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if( alarm == true){
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return;
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}
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#endif
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set_sleep_mode(SLEEP_MODE_PWR_DOWN);
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sleep_mode();
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}
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@ -143,6 +154,16 @@ ISR(WATCHDOG_vect) {
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WDTCSR = (1<<WDIE)|(1<<WDP3)|(1<<WDP0);
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}
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#ifdef HAS_ALARM
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// innterrupt handler pin change
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ISR(PCINT0_vect)
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{
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sleep_disable();
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blink(1);
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alarm = true;
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}
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#endif
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// Get Battery Voltage
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int32_t readVcc() {
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bitClear(PRR, PRADC);
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@ -221,6 +242,14 @@ void setup()
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radio.setPowerLevel(RFM69_TXPOWER);
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radio.sleep();
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#endif
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#ifdef HAS_ALARM
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MCUCR = (MCUCR & ~(bit(ISC01)|bit(ISC00))) | bit(ISC01); // fallende Flanke
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GIMSK = (1<<PCIE0);
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PCMSK0 = (1<<PCINT0); // PCINT(PA0)
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pinMode(ALARM_PIN, INPUT_PULLUP);
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#endif
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// Setup LED if defined
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#ifdef LED_PIN
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pinMode(LED_PIN, OUTPUT);
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@ -228,7 +257,6 @@ void setup()
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#endif
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}
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void loop()
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{
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// Create Data Structure for Sensor Data
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@ -236,6 +264,11 @@ void loop()
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struct lora_data {
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uint8_t bat;
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} __attribute__ ((packed)) data;
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#elif defined HAS_ALARM
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struct lora_data {
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uint8_t bat;
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uint8_t alarm;
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} __attribute__ ((packed)) data;
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#elif defined HAS_SHT21
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struct lora_data {
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uint8_t bat;
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@ -280,6 +313,11 @@ void loop()
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data.brightness = (int16_t)(brightness());
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#endif
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#if defined HAS_ALARM
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data.alarm = (uint8_t)alarm;
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alarm = false;
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#endif
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// Add Battery Voltage, 20mv steps, encoded into 1 Byte
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uint32_t batv = readVcc();
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data.bat = (uint8_t)(batv/20);
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@ -11,6 +11,7 @@
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#define HAS_BME280 - Bosch BME280 Temperature + Humidity + Pressure Sensor
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#define HAS_SHT21_BRIGHTNESS - SHT21 + Brightness via LED
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#define HAS_BME280_BRIGHTNESS - BME280 + Brightness via LED
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#define HAS_ALARM - send message when pin is triggered
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* LED Support
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#define LED_PIN PIN_A7 - LED is connected to ATTiny84 Pin A7 on TinyTX SMD / TinyLora
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#define LED_K PIN_A7 - LED Cathode
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#define LED_A PIN_B2 - LED Anode
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* Alarm
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#define ALARM_PIN PIN_A0
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if pin changed , change also PCMSK0 = (1<<PCINT0); to corrent PCINT
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* Time between Measurements
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#define SLEEP_TIME 528 - Time in Seconds between Measurements. Try it out to get a good Approximation
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Examples from my Tests::
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#define HAS_BME280_BRIGHTNESS
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#define LED_K PIN_A7
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#define LED_A PIN_B2
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#define SLEEP_TIME 544 // ca
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#define SLEEP_TIME 544
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*/
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/*
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// LoRa RFM95 + Alarm
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#define RF_LORA
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#define HAS_ALARM
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#define ALARM_PIN PIN_A0
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#define LED_PIN PIN_A7
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#define SLEEP_TIME 544
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*/
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