From 1a1c682a6cc779e420508ea532787f4809a3a306 Mon Sep 17 00:00:00 2001
From: dakkar <dakkar@thenautilus.net>
Date: Fri, 20 Apr 2018 15:02:07 +0100
Subject: turn off sensor while sleeping

---
 sensor/thermostat.ino | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

(limited to 'sensor/thermostat.ino')

diff --git a/sensor/thermostat.ino b/sensor/thermostat.ino
index 243c80b..2214ae0 100644
--- a/sensor/thermostat.ino
+++ b/sensor/thermostat.ino
@@ -47,11 +47,17 @@ class MyAdvertisedDeviceCallbacks: public BLEAdvertisedDeviceCallbacks {
   } // onResult
 }; // MyAdvertisedDeviceCallbacks
 
+void enable_sensor(bool enable) {
+  pinMode(12,OUTPUT);
+  digitalWrite(12,enable ? HIGH : LOW);
+  delay(500);
+}
+
 bool read_sensor(float* humidity, float* temperature) {
   dht.setup(13,DHTesp::DHT11);
 
-  int tries=0;
-  while (++tries<10) {
+  int tries=0;bool ret=false;
+  while (!ret && ++tries<10) {
     delay(dht.getMinimumSamplingPeriod());
     *humidity = dht.getHumidity();
     *temperature = dht.getTemperature();
@@ -64,9 +70,9 @@ bool read_sensor(float* humidity, float* temperature) {
     data += dht.getStatusString();
     show(data);
 
-    if (dht.getStatus() != DHTesp::ERROR_TIMEOUT) return true;
+    if (dht.getStatus() != DHTesp::ERROR_TIMEOUT) ret = true;
   }
-  return false;
+  return ret;
 }
 
 uint32_t send_data_and_get_time(BLEAddress* pAddress,String* data) {
@@ -121,6 +127,7 @@ void setup() {
 void loop() {
   display.displayOn();
   display.clear();
+  enable_sensor(true);
 
   BLEScan* pBLEScan = BLEDevice::getScan();
   MyAdvertisedDeviceCallbacks* cb = new MyAdvertisedDeviceCallbacks();
@@ -153,6 +160,7 @@ void loop() {
 
   String nt = "Next time:";nt+=next_time;
   display.drawString(0,20,nt);display.display();
+  enable_sensor(false);
   delay(2000);
   esp_sleep_enable_timer_wakeup(next_time * uS_TO_S_FACTOR);
   esp_deep_sleep_start();
-- 
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