From ff653faa602668f52f1cd760ef712fd2df283bab Mon Sep 17 00:00:00 2001
From: Luis Rodil-Fernandez <dropmeaword@gmail.com>
Date: Fri, 23 Sep 2022 18:48:12 +0200
Subject: [PATCH] first commit

---
 README.md    |   8 +++
 chirpbot.ino | 172 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 180 insertions(+)
 create mode 100644 README.md
 create mode 100644 chirpbot.ino

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..f250ca8
--- /dev/null
+++ b/README.md
@@ -0,0 +1,8 @@
+# Chirpbot
+
+It chirps, it's electronic, it's the chirpbot.
+
+Feed with sun.
+Sleeps at sunset.
+
+
diff --git a/chirpbot.ino b/chirpbot.ino
new file mode 100644
index 0000000..03778ee
--- /dev/null
+++ b/chirpbot.ino
@@ -0,0 +1,172 @@
+// https://www.youtube.com/watch?v=tVwQ8cb8HbQ
+// ATtyny85 chirping and sleep
+
+int analogPin = 3;
+
+/////////////
+#include <avr/sleep.h>
+void setup() {
+  pinMode(PB4, OUTPUT); //BEEP
+  pinMode(PB3, INPUT); // ANALOG INPUT FOR RANDOM
+//  randomSeed(analogRead(0));
+  randomSeed(analogRead(PB3));
+  setup_watchdog(7);  //8 seconds
+}
+
+/////////////
+void loop() {
+  sleep();  
+}
+
+/////////////
+void sleep() {
+
+    digitalWrite (PB4,LOW);
+    ADCSRA &= ~_BV(ADEN);                   // ADC off
+    set_sleep_mode(SLEEP_MODE_PWR_DOWN);    
+    sleep_enable();                         // Sets the Sleep Enable bit in the MCUCR Register (SE BIT)
+    sei();                                  // Enable interrupts
+    sleep_cpu();                            // sleep
+
+//    cli();                                  // Disable interrupts
+//   sleep_disable();                        // Clear SE bit
+//    sei();                                  // Enable interrupts 
+
+  
+} 
+
+// Watchdog Interrupt Service / is executed when watchdog timed out
+ISR(WDT_vect) {
+   cli();                                  // Disable interrupts
+   sleep_disable();                        // Clear SE bit
+   sei();
+
+   // BEGIN: this is where sound is generated
+   tweet(2, 1);
+   //chirp(); 
+   // END: this is where sound is generated
+
+//   setup_watchdog(random(5)+4); // add by tez
+//   randomSeed(analogRead(analogPin));
+   setup_watchdog(random(5)+random(3) + 2); // add by tez
+}
+ 
+// 0=16ms, 1=32ms,2=64ms,3=128ms,4=250ms,5=500ms
+// 6=1 sec,7=2 sec, 8=4 sec, 9= 8sec
+void setup_watchdog(int ii) {
+  byte bb;
+  int ww;
+  if (ii > 9 ) ii=9;
+  bb=ii & 7;
+  if (ii > 7) bb|= (1<<5);
+  bb|= (1<<WDCE);
+  ww=bb;
+
+  MCUSR &= ~(1<<WDRF);
+  // start timed sequence
+  WDTCR |= (1<<WDCE) | (1<<WDE);
+  // set new watchdog timeout value
+  WDTCR = bb;
+  WDTCR |= _BV(WDIE);
+}   
+
+/////////////
+void chirp() {
+  int inten_rand, chirpNum_rand;
+  inten_rand = int(random(2,4));
+  chirpNum_rand = int(random(3,6));
+  highChirp(inten_rand,chirpNum_rand);
+//  delay(100);
+  delay(random(50,200));
+  if(random(2) == true){
+    lowChirp(200,2);
+  }
+//  delay(100);
+  delay(random(50,200));
+//  tweet(4,2);
+}
+
+/////////////
+void highChirp(int intensity, int chirpsNumber){
+  int i;
+  int x;
+  int chirp_delay;
+//  chirp_delay = random(6, 9)*4;
+
+  chirp_delay = random(1, 15)*4;
+
+  int reptimes = random(60, 300);
+  
+  for(int veces=0; veces<=chirpsNumber; veces++){
+    for (i=50; i<reptimes; i=(i+1)) // 200
+    {
+      for  (x=0; x<intensity;  x++)
+      {
+        digitalWrite (PB4,HIGH);
+        delayMicroseconds(i);
+        //if(i>300) delayMicroseconds(i);
+        //else delayMicroseconds ((400-i));
+        digitalWrite (PB4,LOW);
+        delayMicroseconds(i);
+        //if(i>300) delayMicroseconds(i);
+        //else delayMicroseconds ((400-i));
+        //delayMicroseconds (i);
+      }
+    }
+    delay(chirp_delay);
+    chirp_delay=chirp_delay*0.75;
+  }
+}
+
+/////////////
+void lowChirp(int intensity, int chirpsNumber){
+  int i;
+  int x;
+
+   int reptimes = random(1, 2); //random(100, 300);
+   
+  for(int veces=0; veces<=chirpsNumber; veces++){
+    for (i=0; i<reptimes; i++) // 200
+    {
+      digitalWrite (PB4,HIGH);
+      delayMicroseconds(i);
+      digitalWrite(PB4,LOW);
+      delayMicroseconds(i);
+    } 
+
+    int i_hi = random(90,150);
+    int i_lo = abs(i_hi - random(30,90));
+//    for (i=90; i>80; i--)
+    for (i=i_hi; i>i_lo; i--)
+    {
+      int xrep = random(1,9);
+      for  ( x=0; x<xrep;  x++) // 5
+      {
+        digitalWrite (PB4,HIGH);
+        delayMicroseconds (i);
+        digitalWrite (PB4,LOW);
+        delayMicroseconds (i);
+      }
+    }
+  }
+}
+
+/////////////
+void tweet(int intensity, int chirpsNumber){
+int i;
+int x;
+//normal chirpsNumber 3, normal intensity 5
+for(int veces=0; veces<chirpsNumber; veces++){
+  for (int i=80; i>0; i--)
+  {
+   for  (int x=0; x<intensity;  x++)
+   {
+     digitalWrite (PB4,HIGH);
+     delayMicroseconds (i);
+     digitalWrite (PB4,LOW);
+     delayMicroseconds (i);
+   }
+  }
+}
+delay(1000);
+}