basecamp stub

.gitignore

@@ -2,3 +2,10 @@
 .piolibdeps
 .clang_complete
 .gcc-flags.json
+
+# virtualenv
+bin/
+include/
+lib/
+local/
+share/

platformio.ini

@@ -9,6 +9,16 @@
 ; http://docs.platformio.org/page/projectconf.html
 
 [env:esp32thing]
-platform = espressif32
+platform = https://github.com/platformio/platform-espressif32.git#feature/stage
+;platform = espressif32
 board = esp32thing
+board_f_cpu = 240000000L
+board_f_flash = 80000000L
 framework = arduino
+build_flags = -DLOG_LOCAL_LEVEL=ESP_LOG_DEBUG
+
+lib_deps =
+;    Basecamp
+    https://github.com/merlinschumacher/Basecamp.git
+    u8g2
+lib_ignore = ESPAsyncTCP

src/main.cpp

@@ -1,34 +1,176 @@
-/**
- * Blink
- *
- * Turns on an LED on for one second,
- * then off for one second, repeatedly.
- *
- * https://github.com/platformio/platformio-examples/tree/develop/espressif
- */
-#include "Arduino.h"
-
-#ifndef LED_BUILTIN
-#define LED_BUILTIN 13
+//Define DEBUG to get the Output from DEBUG_PRINTLN
+#define DEBUG 1
+
+//Include Basecamp in this sketch
+#include <Basecamp.hpp>
+#include <Configuration.hpp>
+
+#include <U8g2lib.h>
+#ifdef U8X8_HAVE_HW_SPI
+#include <SPI.h>
+#endif
+#ifdef U8X8_HAVE_HW_I2C
+#include <Wire.h>
 #endif
 
-void setup()
+#include "main.h"
+
+U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0, /* clock=*/ 15, /* data=*/ 4, /* reset=*/ 16);
+
+//Create a new Basecamp instance called iot
+Basecamp iot;
+
+//Variables for the sensor and the battery
+static const int ResetPin = 35;
+static const int SensorPin = 32;
+static const int BatteryPin = 34;
+int sensorValue = 0;
+//The batteryLimit defines the point at which the battery is considered empty.
+int batteryLimit = 3300;
+
+//This is used to control if the ESP should enter sleep mode or not
+bool delaySleep = false;
+
+//Variables for the mqtt packages and topics
+uint16_t statusPacketIdSub = 0;
+String delaySleepTopic;
+String statusTopic;
+String batteryTopic;
+String batteryValueTopic;
+
+// Reset the configuration to factory defaults (all empty)
+void resetToFactoryDefaults()
 {
-  // initialize LED digital pin as an output.
-  pinMode(LED_BUILTIN, OUTPUT);
+    DEBUG_PRINTLN("Resetting to factory defaults");
+    Configuration config(String{"/basecamp.json"});
+    config.load();
+    config.reset();
+    config.save();  
 }
 
-void loop()
-{
-  // turn the LED on (HIGH is the voltage level)
-  digitalWrite(LED_BUILTIN, HIGH);
+void setup() {
+  //configuration of the battery and sensor pins
+  pinMode(ResetPin, INPUT_PULLDOWN);
+  pinMode(SensorPin, INPUT_PULLDOWN);
+  pinMode(BatteryPin, INPUT);
+
+  //read the status of the doorsensor as soon as possible to determine the state that triggered it
+  sensorValue = digitalRead(SensorPin);
+
+  bool resetPressed = (digitalRead(ResetPin) == HIGH);
+  if (resetPressed)
+  {
+    resetToFactoryDefaults();
+  }
+
+  u8g2.begin();
+  delay(50);
+  u8g2.clearBuffer();          // clear the internal memory
+  u8g2.setFont(u8g2_font_ncenB08_tr); // choose a suitable font
+  u8g2.drawStr(0,10,"Hello World!");  // write something to the internal memory
+  u8g2.sendBuffer();          // transfer internal memory to the display
+
+  //Initialize Basecamp
+  iot.begin();
+
+  if (resetPressed) {
+    DEBUG_PRINTLN("**** CONFIG HAS BEEN MANUALLY RESET ****");
+  }
+
+  //Configure the MQTT topics
+  delaySleepTopic = "esp32-node/cmd/" + iot.hostname + "/delaysleep";
+  statusTopic = "esp32-node/stat/" + iot.hostname + "/status";
+  batteryTopic = "esp32-node/stat/" + iot.hostname + "/battery";
+  batteryValueTopic = "esp32-node/stat/" + iot.hostname + "/batteryvalue";
+
+  //Set up the Callbacks for the MQTT instance. Refer to the Async MQTT Client documentation
+  // TODO: We should do this actually _before_ connecting the mqtt client...
+  iot.mqtt.onConnect(onMqttConnect);
+  iot.mqtt.onPublish(suspendESP);
+  iot.mqtt.onMessage(onMqttMessage);
+}
+
+
+//This function is called when the MQTT-Server is connected
+void onMqttConnect(bool sessionPresent) {
+  DEBUG_PRINTLN(__func__);
+  
+  //Subscribe to the delay topic
+  iot.mqtt.subscribe(delaySleepTopic.c_str(), 0);
+  //Trigger the transmission of the current state.
+  transmitStatus();
+}
+
+
+//This function transfers the state of the sensor. That includes the door status, battery status and level
+void transmitStatus() {
+  DEBUG_PRINTLN(__func__);
+
+  if (sensorValue == 0) {
+    DEBUG_PRINTLN("Door open");
+    //Transfer the current state of the sensor to the MQTT broker
+    statusPacketIdSub = iot.mqtt.publish(statusTopic.c_str(), 1, true, "open" );
+    //Configure the wakeup pin to wake if the door is closed
+    esp_sleep_enable_ext0_wakeup((gpio_num_t)SensorPin, 1);
+  } else {
+    DEBUG_PRINTLN("Door closed");
+    //Transfer the current state of the sensor to the MQTT broker
+    statusPacketIdSub = iot.mqtt.publish(statusTopic.c_str(), 1, true, "closed" );
+    //Configure the wakeup pin to wake if the door is closed
+    esp_sleep_enable_ext0_wakeup((gpio_num_t)SensorPin, 0);
+  }
+
+  //Read the current analog battery value
+  sensorValue = analogRead(BatteryPin);
+  //sensorC stores the battery value as a char
+  char sensorC[6];
+  //convert the sensor value to a string
+  sprintf(sensorC, "%04i", sensorValue);
+  //Send the sensor value to the MQTT broker
+  iot.mqtt.publish(batteryValueTopic.c_str(), 1, true, sensorC);
+  //Check the battery level and publish the state
+  if (sensorValue < batteryLimit) {
+    DEBUG_PRINTLN("Battery empty");
+    iot.mqtt.publish(batteryTopic.c_str(), 1, true, "empty" );
+  } else {
+    DEBUG_PRINTLN("Battery full");
+    iot.mqtt.publish(batteryTopic.c_str(), 1, true, "full" );
+  }
+  DEBUG_PRINTLN("Data published");
+}
+
+//This topic is called if an MQTT message is received
+void onMqttMessage(char* topic, char* payload, AsyncMqttClientMessageProperties properties, size_t len, size_t index, size_t total) {
+  DEBUG_PRINTLN(__func__);
 
-  // wait for a second
-  delay(1000);
+  //Check if the payload eqals "true" and set delaySleep correspondigly
+  //Since we only subscribed to one topic, we only have to compare the payload
+  if (strcmp(payload, "true") == 0)  {
+    delaySleep = true;
+  } else  {
+    delaySleep = false;
+  }
+}
 
-  // turn the LED off by making the voltage LOW
-  digitalWrite(LED_BUILTIN, LOW);
+void suspendESP(uint16_t packetId) {
+  DEBUG_PRINTLN(__func__);
   
-   // wait for a second
-  delay(1000);
+  //Check if the published package is the one of the door sensor
+  if (packetId == statusPacketIdSub) {
+   
+    if (delaySleep == true) {
+      DEBUG_PRINTLN("Delaying Sleep");
+      return;
+    }
+    DEBUG_PRINTLN("Entering deep sleep");
+    //properly disconnect from the MQTT broker
+    iot.mqtt.disconnect();
+    //send the ESP into deep sleep
+    esp_deep_sleep_start();
+  }
 }
+
+void loop()
+{
+}
+

src/main.h

@@ -0,0 +1,7 @@
+void resetToFactoryDefaults();
+void setup();
+void onMqttConnect(bool sessionPresent);
+void transmitStatus();
+void onMqttMessage(char* topic, char* payload, AsyncMqttClientMessageProperties properties, size_t len, size_t index, size_t total);
+void suspendESP(uint16_t packetId);
+void loop();