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nerves_dht

0.1.3
0.1.3 retired 0.1.2 retired 0.1.1 0.1.0

Drive of DHT 11 and DHT 22 (temperature and humidity sensor)

Retired package: Deprecated - functionality updated and moved to https://hex.pm/packages/dht
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nerves_dht src _Beaglebone_Black_Driver.c
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src/_Beaglebone_Black_Driver.c 

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>



#include "erl_comm.c"

#include "erl_interface.h"

#include "ei.h"



#include "Beaglebone_Black/bbb_dht_read.h"



typedef unsigned char byte;



int main(int argc, char *argv[]) {



  if (argc != 3) {

    fprintf(stderr, "Usage: %s [GPIO_Pin] [DHT] \n", argv[0]);

    exit(EXIT_FAILURE);

  }



  int pin = atoi(argv[1]);

  int sensor = atoi(argv[2]);



  for(;;){



    float humidity = 0, temperature = 0;

    int result = bbb_dht_read(sensor, pin, &humidity, &temperature);



    if(result == DHT_SUCCESS){

      write_success(pin, sensor, humidity, temperature);

    } else {

      write_error(result);

    }



  }



  return 1;

}