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add dht sensor code

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This commit is contained in:
Harald Pichler 2017-10-19 11:35:46 +02:00
parent da8cd47dea
commit 4d90cd2e3f
5 changed files with 110 additions and 29 deletions
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7
examples/osd/arduino-dht/DHT.h
View file

@ -6,12 +6,7 @@ written by Adafruit Industries
#ifndef DHT_H
#define DHT_H
#if ARDUINO >= 100
#include "Arduino.h"
#else
#include "WProgram.h"
#endif
#include "Arduino.h"
// Uncomment to enable printing out nice debug messages.
//#define DHT_DEBUG

65
examples/osd/arduino-dht/arduino-dht.geany Normal file
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@ -0,0 +1,65 @@
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[project]
name=arduino-dht
base_path=/home/harald/install/osd-contiki/examples/osd/arduino-dht/
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6
examples/osd/arduino-dht/resources/res-htu21dhum.c
View file

@ -52,7 +52,7 @@ RESOURCE(res_htu21dhum,
NULL,
NULL);
extern char htu21d_hum_s[8];
extern char dht_hum_s[8];
static void
@ -64,12 +64,12 @@ res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferr
if(accept == -1 || accept == REST.type.TEXT_PLAIN) {
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "%s", htu21d_hum_s);
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "%s", dht_hum_s);
REST.set_response_payload(response, buffer, strlen((char *)buffer));
} else if(accept == REST.type.APPLICATION_JSON) {
REST.set_header_content_type(response, REST.type.APPLICATION_JSON);
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'moisture':%s}", htu21d_hum_s);
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'moisture':%s}", dht_hum_s);
REST.set_response_payload(response, buffer, strlen((char *)buffer));
} else {

6
examples/osd/arduino-dht/resources/res-htu21dtemp.c
View file

@ -52,7 +52,7 @@ RESOURCE(res_htu21dtemp,
NULL,
NULL);
extern char htu21d_temp_s[8];
extern char dht_temp_s[8];
static void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
@ -63,12 +63,12 @@ res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferr
if(accept == -1 || accept == REST.type.TEXT_PLAIN) {
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "%s", htu21d_temp_s);
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "%s", dht_temp_s);
REST.set_response_payload(response, buffer, strlen((char *)buffer));
} else if(accept == REST.type.APPLICATION_JSON) {
REST.set_header_content_type(response, REST.type.APPLICATION_JSON);
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'temperature':%s}", htu21d_temp_s);
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'temperature':%s}", dht_temp_s);
REST.set_response_payload(response, buffer, strlen((char *)buffer));
} else {

55
examples/osd/arduino-dht/sketch.pde
View file

@ -11,32 +11,43 @@
*/
#include <Wire.h>
#include "Adafruit_HTU21DF.h"
#include "DHT.h"
extern "C" {
#include "arduino-process.h"
#include "rest-engine.h"
Adafruit_HTU21DF htu = Adafruit_HTU21DF();
extern resource_t res_htu21dtemp, res_htu21dhum, res_battery;
float htu21d_hum;
float htu21d_temp;
char htu21d_hum_s[8];
char htu21d_temp_s[8];
#define LED_PIN 4
// Uncomment whatever type you're using!
//#define DHTTYPE DHT11 // DHT 11
#define DHTTYPE DHT22 // DHT 22 (AM2302), AM2321
//#define DHTTYPE DHT21 // DHT 21 (AM2301)
// Connect pin 1 (on the left) of the sensor to +3.3V
// Connect pin 2 of the sensor to whatever your DHTPIN is
// Connect pin 4 (on the right) of the sensor to GROUND
// Connect a 10K resistor from pin 2 (data) to pin 1 (power) o
#define DHTPIN 9 // what digital pin we're connected to
DHT dht(DHTPIN, DHTTYPE);
float dht_hum;
float dht_temp;
char dht_hum_s[8];
char dht_temp_s[8];
}
void setup (void)
{
printf("DHT Sensor\n");
// switch off the led
pinMode(LED_PIN, OUTPUT);
digitalWrite(LED_PIN, HIGH);
// htu21d sensor
if (!htu.begin()) {
printf("Couldn't find sensor!");
}
// DHT sensor
dht.begin();
// init coap resourcen
rest_init_engine ();
#pragma GCC diagnostic ignored "-Wwrite-strings"
@ -51,12 +62,22 @@ void setup (void)
// LOOP_INTERVAL (30 * CLOCK_SECOND)
void loop (void)
{
htu21d_temp = htu.readTemperature();
htu21d_hum = htu.readHumidity();
dtostrf(htu21d_temp , 0, 2, htu21d_temp_s );
dtostrf(htu21d_hum , 0, 2, htu21d_hum_s );
// Reading temperature or humidity takes about 250 milliseconds!
// Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
dht_hum = dht.readHumidity();
// Read temperature as Celsius (the default)
dht_temp = dht.readTemperature();
// Check if any reads failed and exit early (to try again).
if (isnan(dht_hum) || isnan(dht_temp)) {
printf("Failed to read from DHT sensor!\n");
return;
}
dtostrf(dht_temp , 0, 2, dht_temp_s );
dtostrf(dht_hum , 0, 2, dht_hum_s );
// debug only
// printf("Temp: '%s'",htu21d_temp_s);
// printf("\t\tHum: '%s'\n",htu21d_hum_s);
printf("Temp: '%s'",dht_temp_s);
printf("\t\tHum: '%s'\n",dht_hum_s);
}