diff -r 000000000000 -r 88d965579617 main/config.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main/config.h	Tue Oct 08 12:00:31 2019 +0200
@@ -0,0 +1,195 @@
+/**
+ * @file config.h
+ * @brief The 'co2meter' configuration data. These are stored in the 
+ *        spiffs filesystem in a flash partition.
+ */
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+
+// Global includes for the project
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+#include <time.h>
+#include <errno.h>
+#include <sys/unistd.h>
+#include <sys/fcntl.h>
+#include <sys/time.h>
+
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "freertos/semphr.h"
+#include "freertos/event_groups.h"
+#include "freertos/queue.h"
+#include "driver/gpio.h"
+#include "driver/adc.h"
+#include "driver/rtc_io.h"
+#include "soc/sens_periph.h"
+#include "soc/rtc.h"
+#include "esp_adc_cal.h"
+#include "esp_sleep.h"
+#include "esp_log.h"
+#include "esp_spiffs.h"
+#include "esp_vfs.h"
+#include "esp_system.h"
+#include "esp_wifi.h"
+//#include "esp_wifi_types.h"
+#include "esp_wpa2.h"
+#include "esp_event.h"
+#include "esp_spi_flash.h"
+#include "esp_ota_ops.h"
+#include "esp_http_client.h"
+#include "nvs.h"
+#include "nvs_flash.h"
+#include "lwip/apps/sntp.h"
+#include "lwip/sockets.h"
+#include "lwip/dns.h"
+#include "lwip/netdb.h"
+#include "tcpip_adapter.h"
+#include "mqtt_client.h"
+
+#include "rotary_encoder.h"
+#include "u8g2_esp32_hal.h"
+
+#include "task_ds18b20.h"
+#include "task_adc.h"
+#include "task_wifi.h"
+#include "task_mqtt.h"
+#include "xutil.h"
+
+
+/**
+ * @brief Mainloop 1 timed actions.
+ */
+typedef enum
+{
+    MAIN_LOOP1_INIT = 0,		///< Init fase
+    MAIN_LOOP1_CONNECT,			///< Connect WiFi
+    MAIN_LOOP1_MQTT_CONNECT,		///< Connect MQTT if WiFi
+    MAIN_LOOP1_WAITCON,			///< Wait for connection and measurements
+    MAIN_LOOP1_SEND,			///< Send MQTT node and units messages
+    MAIN_LOOP1_WAITACK,			///< MQTT messages received
+    MAIN_LOOP1_MQTT_DISCONNECT,		///< MQTT disconnect
+    MAIN_LOOP1_DISCONNECT,		///< Disconnect WiFi
+    MAIN_LOOP1_WIFI_OFF,		///< WiFi power off
+    MAIN_LOOP1_DONE			///< All done
+} MAIN_LOOP1;
+
+
+
+/**
+ * @brief Mainloop 2 user actions.
+ */
+typedef enum
+{
+    MAIN_LOOP2_INIT = 0,
+    MAIN_LOOP2_UNIT1,			///< Unit 1
+    MAIN_LOOP2_UNIT2,			///< Unit 2
+    MAIN_LOOP2_UNIT3,			///< Unit 3
+    MAIN_LOOP2_UNIT4,			///< Unit 4
+    MAIN_LOOP2_SET_WIFI,		///< WiFi stations setup
+    MAIN_LOOP2_SET_NETWORK,		///< Network setup
+    MAIN_LOOP2_SET_MQTT,		///< MQTT setup
+    MAIN_LOOP2_UPDATE,			///< Update
+    MAIN_LOOP2_INACTIVE,		///< Inactive reached, cleanup
+    MAIN_LOOP2_DONE			///< All done
+} MAIN_LOOP2;
+
+
+
+/**
+ * @brief Global configuration. File /spiffs/config.conf
+ */
+struct strConfig {
+    uint8_t		Version;			///< Record version number for updates.
+    char                ntp_server[32];                 ///< Preffered NTP server.
+    char                hostname[32];                   ///< Our hostname.
+    char                uuid[37];                       ///< Sort of uuid code.
+    char                xlastSSID[32];                  ///< Last connected station.
+    char		mqtt_server[32];		///< MQTT server.
+    uint16_t		mqtt_port;			///< MQTT TCP port.
+    char		mqtt_user[32];			///< MQTT user name if needed.
+    char		mqtt_pwd[62];			///< MQTT password.
+} config;                                               ///< Config record.
+
+
+/**
+ * @brief Write configuration to disk.
+ */
+void write_config(void);
+
+/** @brief Read configuration file. If it doesn't exist create and
+ *         write a new configuration file with sane defaults.
+ */
+void read_config(void);
+
+
+
+/**
+ * @brief Records with WiFi stations we have succesfully connected.
+ */
+struct strStations {
+    char        SSID[32];                       ///< Station SSID
+    char        Password[64];                   ///< Station password
+    bool        hide;                           ///< Hide from AP scan.
+} wifiStation;                                  ///< Station record.
+
+/**
+ * @brief Add a new station record.
+ * @param SSID The SSID
+ * @param Password The password for this SSID
+ * @return The record number, or -1 if error.
+ */
+int add_station(uint8_t *SSID, uint8_t *Password);
+
+/**
+ * @brief Read station info record.
+ * @param SSID Search for the SSID and load the record if found.
+ * @return Return -1 if not found, else the record number and the wifiStation record is filled.
+ */
+int read_station(uint8_t *SSID);
+
+/**
+ * @brief Remove station record.
+ * @param SSID The SSID to remove.
+ */
+void remove_station(uint8_t *SSID);
+
+
+
+/**
+ * @brief Records that describes the carbonation units,
+ */
+typedef struct strUnit {
+    char		uuid[37];			///< Unit uuid
+    char		product_uuid[37];		///< Beer product uuid
+    char		product_code[33];		///< Beer product code
+    char		product_name[129];		///< Beer product name
+    char		alias[33];			///< Alias name 'unit1'
+    int			temperature_state;		///< Reading status
+    char		temperature_address[33];	///< DS18B20 address
+    uint32_t		temperature;			///< Temperature in C * 1000
+    int			pressure_state;			///< Reading status
+    uint8_t		pressure_channel;		///< ADC channel
+    uint32_t		pressure_voltage;		///< Measured voltage in mV.
+    uint32_t		pressure_zero;			///< Zero offset in mV.
+    uint32_t		pressure;			///< Pressure in bar * 1000;
+    int			mode;				///< Unit mode
+} unit_t;
+
+/**
+ * @brief Write units to disk.
+ */
+void write_units(void);
+
+/** @brief Read units file. If it doesn't exist create and
+ *         write a new units file with sane defaults.
+ */
+void read_units(void);
+
+
+
+#endif