From eb947bff8cf96f67f48e9f1233cc761d70ed544b Mon Sep 17 00:00:00 2001
From: Brendan Haines <brendan.haines@gmail.com>
Date: Tue, 29 Nov 2016 20:45:52 -0700
Subject: [PATCH] should change all pinouts to match v1.1 PCB (keypad pinout
 possibly wrong)

---
 Hohm_Phone.ino | 97 ++++++++------------------------------------------
 1 file changed, 15 insertions(+), 82 deletions(-)

diff --git a/Hohm_Phone.ino b/Hohm_Phone.ino
index c7b2bc1..eb80d2f 100644
--- a/Hohm_Phone.ino
+++ b/Hohm_Phone.ino
@@ -6,31 +6,21 @@
 ////////// PARAMETERS //////////
 ////////////////////////////////
 
-// Arduino will wake from sleep when WAKE_PIN is pulled low. Connect any waking buttons to WAKE_PIN
-#define WAKE_PIN 2
+#define LED_BAT_LOW 3
+#define LED_NO_SERVICE 2
 
 #define BUT_ANS A3
 #define BUT_END A4
 
-// RX/TX are in reference to the Arduino, not SIM800
-#define GSM_RX 3
-#define GSM_TX 11
 #define GSM_RST A2
 #define GSM_RING A5
 
-// TIMEOUT_SLEEP is the time to stay awake from last activity until sleep (milliseconds)
-#define TIMEOUT_SLEEP 6000
-
 // Charging voltage thresholds. Will turn on charging at CHG_VLO and turn off charging at CHG_VHI (millivolts)
 #define CHG_VLO 3900
 #define CHG_VHI 4100
 #define CHG_PIN A0
 
-// Comment the following line to use HW serial for Fona and disable debugging information
-#define USB_DEBUG
-
-// Comment the following line to disable sleeping the Arduino
-//#define SLEEP
+#define MAG_SENSE A1
 
 // Keypad pinout
 byte rowPins[4] = {9, 4, 5, 7};
@@ -54,13 +44,7 @@ unsigned long lastActiveTime;
 bool dialtoneActive = false;
 bool startDialtone = false;
 
-#ifdef USB_DEBUG
-#include "SoftwareSerial.h"
-SoftwareSerial fonaSS = SoftwareSerial(GSM_RX, GSM_TX);
-SoftwareSerial *fonaSerial = &fonaSS;
-#else
 HardwareSerial *fonaSerial = &Serial;
-#endif
 
 Adafruit_FONA fona = Adafruit_FONA(GSM_RST);
 Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, 4, 3 );
@@ -70,28 +54,6 @@ Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, 4, 3 );
 ////////// FUNCTIONS //////////
 ///////////////////////////////
 
-void wakeFromSleep() {
-  sleep_disable();
-  detachInterrupt(WAKE_PIN);
-#ifdef USB_DEBUG
-  Serial.println("Woke up");
-#endif
-  startDialtone = true;
-}
-
-void goToSleep() {
-#ifdef USB_DEBUG
-  Serial.println("Going to sleep");
-#endif
-  sleep_enable();
-  attachInterrupt(WAKE_PIN, wakeFromSleep, LOW);
-  set_sleep_mode(SLEEP_MODE_PWR_DOWN);
-  cli();
-  sleep_bod_disable();
-  sei();
-  sleep_cpu();
-}
-
 void inCall() {
   while (1) {
     if ( !digitalRead(BUT_END) || fona.getCallStatus() < 3 ) { // End button pressed
@@ -112,20 +74,11 @@ void inCall() {
 }
 
 void beginCall() {
-#ifdef USB_DEBUG
-  Serial.println("Starting Call");
-#endif
   fona.sendCheckReply( F("AT+STTONE=0"), F("OK") ); // End dialtone
   dialtoneActive = false;
   if ( fona.callPhone( phoneNumber ) ) {
-#ifdef USB_DEBUG
-    Serial.println("Call Started");
-#endif
     inCall();
   }
-#ifdef USB_DEBUG
-  Serial.println("Call ended");
-#endif
 }
 
 void resumeDialtone() {
@@ -138,36 +91,33 @@ void resumeDialtone() {
 //////////////////////////////////
 
 void setup() {
-#ifdef USB_DEBUG
-  Serial.begin(9600);
-  Serial.println("Booted. Setting up");
-#endif
-  pinMode( WAKE_PIN, INPUT_PULLUP );
   pinMode( BUT_ANS, INPUT_PULLUP );
   pinMode( BUT_END, INPUT_PULLUP );
   pinMode( GSM_RST, OUTPUT );
   pinMode( GSM_RING, INPUT_PULLUP );
   pinMode( CHG_PIN, OUTPUT );
+  pinMode( LED_BAT_LOW, OUTPUT);
+  pinMode( LED_NO_SERVICE, OUTPUT);
+
+  digitalWrite( LED_BAT_LOW, HIGH );
+  digitalWrite( LED_NO_SERVICE, HIGH );
 
   digitalWrite( GSM_RST, HIGH );
   digitalWrite( CHG_PIN, HIGH );
 
-  fonaSerial->begin(4800);
+  digitalWrite( LED_NO_SERVICE, LOW );
+  fonaSerial->begin(115200);
   if (! fona.begin(*fonaSerial)) {
-#ifdef USB_DEBUG
-    Serial.println("Fona failed to respond");
-#endif
     while (1); //fona didn't start
   }
-  while ( !fona.setAudio(FONA_EXTAUDIO) ) {}
+  //while ( !fona.setAudio(FONA_EXTAUDIO) ) {}
 
-#ifdef USB_DEBUG
-  Serial.println("Setup Complete");
-#endif
   startDialtone = true;
   lastActiveTime = millis();
-
+  
+  digitalWrite( LED_BAT_LOW, LOW );
   fona.sendCheckReply( F("AT+CLVL=20"), F("OK") ); // set dialtone volume
+
 }
 
 void loop() {
@@ -199,14 +149,6 @@ void loop() {
     fona.playDTMF( key );  // Play DTMF tone
 
     lastActiveTime = millis();
-#ifdef USB_DEBUG
-    int i;
-    for (i = 0; i < 15; i = i + 1) {
-      Serial.print(phoneNumber[i]);
-      Serial.print(", ");
-    }
-    Serial.println(phoneNumberLength);
-#endif
     // Check for complete phone number (including +1 country code)
     if ( ( phoneNumberLength == 10 & phoneNumber[0] != '1' ) || phoneNumberLength > 10 ) {
       beginCall();
@@ -220,12 +162,10 @@ void loop() {
       phoneNumber[j] = 0;
     }
     phoneNumberLength = 0;
-#ifdef USB_DEBUG
-    Serial.println( phoneNumberLength );
-#endif
     resumeDialtone();
   }
 
+  // Battery Management
   uint16_t vbat;
   fona.getBattVoltage(&vbat);
   if ( vbat < CHG_VLO ) {
@@ -234,13 +174,6 @@ void loop() {
     digitalWrite( CHG_PIN, LOW );
   }
 
-#ifdef SLEEP
-  // Autoshutdown if inactive for extended period
-  // Typecast to long avoids "rollover" issues
-  if ( (long)(millis() - lastActiveTime) > TIMEOUT_SLEEP ) {
-    goToSleep();
-  }
-#endif
 }