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An Arduino or ESP8266 based weather station which can be extended by different modules.
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#include <ESP8266WebServer.h>
#include "mode_pull.h"
#include "config.h"
#if defined(DHT_TYPE) || defined(HAVE_BMP180)
float _temperature;
#endif
#ifdef DHT_TYPE
float _humidity;
#endif
#ifdef HAVE_BH1750
float _light;
#endif
#ifdef HAVE_BMP180
float _pressure;
#endif
#ifdef RAIN_PIN
bool _raining;
#endif
static const char MIME_TEXT[] PROGMEM = "text/plain";
static const char MIME_METRICS[] PROGMEM = "text/plain; version=0.0.4; charset=utf-8";
#if defined(DHT_TYPE) || defined(HAVE_BMP180)
# define TEMPL_TEMPERATURE \
"# HELP temperature_celsius Temperature in degrees Celsius\n" \
"# TYPE temperature_celsius gauge\n" \
"temperature_celsius %.2f\n"
#endif
#ifdef DHT_TYPE
# define TEMPL_HUMIDITY \
"# HELP relative_humidity Relative humidity, in percents\n" \
"# TYPE relative_humidity gauge\n" \
"relative_humidity %.2f\n"
#endif
#ifdef RAIN_PIN
# define TEMPL_RAIN \
"# HELP raining Boolean value checking if it is raining\n" \
"# TYPE raining gauge\n" \
"raining %d\n"
#endif
#ifdef HAVE_BH1750
# define TEMPL_LIGHT \
"# HELP light Ambient light, in lumens\n" \
"# TYPE light gauge\n" \
"light %.2f\n"
#endif
#ifdef HAVE_BMP180
# define TEMPL_PRESSURE \
"# HELP pressure Atmospheric pressure, in Pa\n" \
"# TYPE pressure gauge\n" \
"pressure %d\n"
#endif
ESP8266WebServer server;
static void
_replyNotFound()
{
server.send(404, FPSTR(MIME_TEXT), "Not Found");
}
static void
_sendMetrics()
{
size_t message_size =
#if defined(DHT_TYPE) || defined(HAVE_BMP180)
sizeof(TEMPL_TEMPERATURE) +
#endif // defined(DHT_TYPE) || defined(HAVE_BMP180)
#ifdef DHT_TYPE
sizeof(TEMPL_HUMIDITY) +
#endif // DHT_TYPE
#ifdef RAIN_PIN
sizeof(TEMPL_RAIN) +
#endif // RAIN_PIN
#ifdef HAVE_BH1750
sizeof(TEMPL_LIGHT) +
#endif // HAVE_BH1750
#ifdef HAVE_BMP180
sizeof(TEMPL_PRESSURE) +
#endif // HAVE_BMP180
1;
char message[message_size];
snprintf(message, message_size, ""
#if defined(DHT_TYPE) || defined(HAVE_BMP180)
TEMPL_TEMPERATURE
#endif // defined(DHT_TYPE) || defined(HAVE_BMP180)
#ifdef DHT_TYPE
TEMPL_HUMIDITY
#endif // DHT_TYPE
#ifdef RAIN_PIN
TEMPL_RAIN
#endif // RAIN_PIN
#ifdef HAVE_BH1750
TEMPL_LIGHT
#endif // HAVE_BH1750
#ifdef HAVE_BMP180
TEMPL_PRESSURE
#endif // HAVE_BMP180
#if defined(DHT_TYPE) || defined(HAVE_BMP180)
, _temperature
#endif // defined(DHT_TYPE) || defined(HAVE_BMP180)
#ifdef DHT_TYPE
, _humidity
#endif // DHT_TYPE
#ifdef RAIN_PIN
, _raining ? 1 : 0
#endif // RAIN_PIN
#ifdef HAVE_BH1750
, _light_level
#endif // HAVE_BH1750
#ifdef HAVE_BMP180
, _pressure
#endif // HAVE_BMP180
);
server.send(200, MIME_METRICS, message);
}
PWSModePull::PWSModePull(int port)
{
_port = port;
}
void
PWSModePull::begin()
{
server.on("/metrics", HTTP_GET, _sendMetrics);
server.onNotFound(_replyNotFound);
server.begin(_port);
}
void
PWSModePull::loop()
{
server.handleClient();
}
void
PWSModePull::sendValues(
#if defined(DHT_TYPE) || defined(HAVE_BMP180)
float temperature,
#endif
#ifdef DHT_TYPE
float humidity,
#endif
#ifdef RAIN_PIN
bool raining,
#endif
#ifdef HAVE_BH1750
float light,
#endif
#ifdef HAVE_BMP180
float pressure,
#endif
...)
{
#if defined(DHT_TYPE) || defined(HAVE_BMP180)
_temperature = temperature;
#endif
#ifdef DHT_TYPE
_humidity = humidity;
#endif
#ifdef RAIN_PIN
_raining = raining;
#endif
#ifdef HAVE_BH1750
_light = light;
#endif
#ifdef HAVE_BMP180
_pressure = pressure;
#endif
}