int main(int argc, char **argv)
{
if (!bcm2835_init())
return 1;
if (argc != 3) {
printf("usage: %s [11|22|2302] GPIOpin#\n", argv[0]);
printf("example: %s 2302 4 - Read from an AM2302 connected to GPIO #4\n", argv[0]);
return 2;
}
int type = 0;
if (strcmp(argv[1], "11") == 0) type = DHT11;
if (strcmp(argv[1], "22") == 0) type = DHT22;
if (strcmp(argv[1], "2302") == 0) type = AM2302;
if (type == 0) {
printf("Select 11, 22, 2302 as type!\n");
return 3;
}
int dhtpin = atoi(argv[2]);
if (dhtpin <= 0) {
printf("Please select a valid GPIO pin #\n");
return 3;
}
fprintf(stderr, "Using pin #%d\n", dhtpin);
readDHT(type, dhtpin);
return 0;
} // main
/*
This example read humidity and temperature from DHT11 or DHT22 sensor
*/
int main(int argc, char **argv)
{
setupUUGear();
setShowLogs(0);
UUGearDevice dev = attachUUGearDevice ("UUGear-Arduino-7853-2668");
if (dev.fd != -1)
{
int i;
for (i = 0; i < 200; i ++)
{
time_t mytime = time(NULL);
int data = readDHT(&dev, 4);
float humidity = ((float)(data >> 16)) / 10;
if ( humidity > 100 )
{
humidity = (data >> 24); // for DHT11
}
float temperature = ((float)(data & 0x7FFF)) / 10;
if ( temperature > 125 )
{
temperature = ((data & 0x7F00) >> 8); // for DHT11
}
int ICACHE_FLASH_ATTR settingsCGI(HttpdConnData *connData) {
char buff[256];
float * r = readDHT();
float lastTemp = r[0];
float lastHum = r[1];
os_sprintf(buff,
"{\"power\":\"%s\",\"mode\":\"%s\",\"temp\":\"%d\",\"fan\":\"%s\",\"swing\":\"%s\",\"dht_temp\":\"%d\",\"dht_humid\":\"%d\"}",
sysCfg.power,
sysCfg.mode,
sysCfg.temp,
sysCfg.fan,
sysCfg.swing,
(int)(lastTemp * 100),
(int)(lastHum * 100)
);
httpdStartResponse(connData, 200);
httpdHeader(connData, "Content-Type", "text/html");
httpdEndHeaders(connData);
httpdSend(connData, buff, -1);
return HTTPD_CGI_DONE;
}
int main(int argc, char **argv)
{
if (!bcm2835_init())
return 1;
if (argc != 2) {
printf("usage: %s GPIOpin#\n", argv[0]);
printf("example: %s 4 - Read from an DHT11 connected to GPIO #4\n", argv[0]);
return 2;
}
int type = DHT11;
int dhtpin = atoi(argv[1]);
if (dhtpin <= 0) {
printf("Please select a valid GPIO pin #\n");
return 3;
}
// printf("Using pin #%d\n", dhtpin);
readDHT(type, dhtpin);
return 0;
} // main
int ICACHE_FLASH_ATTR dht_temp_str(char *buff) {
struct sensor_reading* result = readDHT();
if(result->success)
return os_sprintf(buff, "%d.%d", (int)(result->temperature), abs((int)(result->temperature*100)) - abs(((int)result->temperature)*100) );
else
return os_sprintf(buff, "N/A" );
}
int ICACHE_FLASH_ATTR dht_humi_str(char *buff) {
struct sensor_reading* result = readDHT();
if(result->success)
return os_sprintf(buff, "%d.%d", (int)(result->humidity),(int)((result->humidity - (int)result->humidity)*100));
else
return os_sprintf(buff, "N/A" );
}
int main(int argc, char **argv)
{
if (!bcm2835_init())
return 1;
int type = DHT22;
int dhtpin = atoi(argv[1]);
printf("Using pin #%d\n", dhtpin);
readDHT(type, dhtpin);
return 0;
} // main
static void ICACHE_FLASH_ATTR pollThermostatCb(void * arg)
{
unsigned long epoch = sntp_time+(sntp_tz*3600);
int year=get_year(&epoch);
int month=get_month(&epoch,year);
int day=day=1+(epoch/86400);
int dow=wd(year,month,day);
epoch=epoch%86400;
unsigned int hour=epoch/3600;
epoch%=3600;
unsigned int min=epoch/60;
int minadj = (min*100/60);
int currtime = hour*100+minadj;
if(sysCfg.thermostat1state == 0) {
os_printf("Thermostat switched off, abandoning routine.\n");
return;
}
long Treading=-9999;
if(sysCfg.sensor_dht22_enable) {
struct sensor_reading* result = readDHT();
if(result->success) {
Treading=result->temperature*100;
if(sysCfg.thermostat1_input==2) // Humidistat
Treading=result->humidity*100;
}
}
else { if(sysCfg.sensor_ds18b20_enable && sysCfg.thermostat1_input==0 ) {
struct sensor_reading* result = read_ds18b20();
if(result->success) {
int SignBit, Whole, Fract;
Treading = result->temperature;
SignBit = Treading & 0x8000; // test most sig bit
if (SignBit) // negative
Treading = (Treading ^ 0xffff) + 1; // 2's comp
Whole = Treading >> 4; // separate off the whole and fractional portions
Fract = (Treading & 0xf) * 100 / 16;
if (SignBit) // negative
Whole*=-1;
Treading=Whole*100+Fract;
}
}//ds8b20 enabled
}
static ICACHE_FLASH_ATTR void MQTTbroadcastReading(void* arg){
if(sysCfg.mqtt_enable==1) {
//os_printf("Sending MQTT\n");
if(sysCfg.sensor_dht22_enable) {
struct sensor_reading* result = readDHT();
if(result->success) {
char temp[32];
char topic[128];
int len;
dht_temp_str(temp);
len = os_strlen(temp);
os_sprintf(topic,"%s",sysCfg.mqtt_dht22_temp_pub_topic);
MQTT_Publish(&mqttClient,topic,temp,len,0,0);
os_printf("Published \"%s\" to topic \"%s\"\n",temp,topic);
dht_humi_str(temp);
len = os_strlen(temp);
os_sprintf(topic,"%s",sysCfg.mqtt_dht22_humi_pub_topic);
MQTT_Publish(&mqttClient,topic,temp,len,0,0);
os_printf("Published \"%s\" to topic \"%s\"\n",temp,topic);
}
}
if(sysCfg.sensor_ds18b20_enable) {
struct sensor_reading* result = read_ds18b20();
if(result->success) {
char temp[32];
char topic[128];
int len;
ds_str(temp,0);
len = os_strlen(temp);
os_sprintf(topic,"%s",sysCfg.mqtt_ds18b20_temp_pub_topic);
MQTT_Publish(&mqttClient,topic,temp,len,0,0);
os_printf("Published \"%s\" to topic \"%s\"\n",temp,topic);
}
}
}
}
int main(int argc, char **argv) {
if (!bcm2835_init()) return 1;
if (argc < 3) {
printf("usage: %s {11|22|2302} GPIOpin# [ROS Parameters]\n", argv[0]);
printf("example: %s 2302 4 - Read from an AM2302 connected to GPIO #4\n", argv[0]);
return 2;
}
int type = 0;
if (strcmp(argv[1], "11") == 0) type = DHT11;
if (strcmp(argv[1], "22") == 0) type = DHT22;
if (strcmp(argv[1], "2302") == 0) type = AM2302;
if (type == 0) {
printf("Select 11, 22, 2302 as type!\n");
return 3;
}
int dhtpin = atoi(argv[2]);
if (dhtpin <= 0) {
printf("Please select a valid GPIO pin #\n");
return 3;
}
printf("Using pin #%d\n", dhtpin);
ros::init(argc, argv, "raspi_dht");
ros::NodeHandle n;
ros::Publisher temperature_pub = n.advertise<std_msgs::Float32>("temperature", 2);
ros::Publisher humidity_pub = n.advertise<std_msgs::Float32>("humidity", 2);
ros::Rate loop_rate(0.016);
ros::Duration retry_interval(5.0);
ros::Duration backoff_interval(200);
bool last_had_data = true;
while (ros::ok()) {
std_msgs::Float32 temperature_msg, humidity_msg;
float t, h;
if (readDHT(type, dhtpin, &t, &h)) {
temperature_msg.data = t;
humidity_msg.data = h;
#ifdef DEBUG
printf("Publishing data: t=%f, h=%f\n", t, h);
ROS_INFO("BOS_RASPI_DHT_NODE: %f, %f", t, h);
#endif
temperature_pub.publish(temperature_msg);
humidity_pub.publish(humidity_msg);
ros::spinOnce();
loop_rate.sleep();
last_had_data = true;
}
else {
if (last_had_data) {
ROS_INFO("BOS_raspi_DHT_node: no data, retrying soon");
retry_interval.sleep();
}
else {
ROS_INFO("BOS_raspi_DHT_node: no data, waiting a while");
backoff_interval.sleep();
}
last_had_data = false;
}
}
return 0;
} // main
int main (int argc, char *argv[])
{
// int tries = 10;
FILE * f;
int newTemp, newRh;
if (wiringPiSetup () == -1)
exit(EXIT_FAILURE) ;
mkdir(DATADIR, 0755 );
if ( chown(DATADIR, getuid(), -1) == -1 )
{
fprintf(stderr, "Was not able to create /var/run/dht\n");
exit(1);
}
if (setuid(getuid()) < 0)
{
perror("Dropping privileges failed\n");
exit(EXIT_FAILURE);
}
//chdir(DATADIR);
f = fopen("/var/run/dht/pid", "w" );
fprintf(f, "%d", getpid() );
fclose(f);
while(1)
{
// while (read_dht22_dat() == 0 && tries--)
// {
// delay(1000); // wait 1sec to refresh
// }
// if (readRHT03 (DHTPIN, &newTemp, &newRh))
if ( readDHT(DHTPIN, &newTemp, &newRh) )
{
static int t2, h2, ft = 1, terror=0, herror=0;
if (ft || (terror>4) || (herror>4) )
{
ft=0;
h2=newRh; t2=newTemp;
terror=herror=0;
}
if ( (newRh > 0) && (newRh < 950) && (abs(h2-newRh)<10) )
{
f=fopen("/var/run/dht/humidity.x", "w");
fprintf(f, "%d", newRh );
fclose(f);
rename("/var/run/dht/humidity.x", "/var/run/dht/humidity");
h2 = newRh;
herror=0;
}
else
herror++;
if ( ( newTemp < 600 ) && (abs(abs(t2)-abs(newTemp))<10) )
{
f=fopen("/var/run/dht/temp.x", "w");
fprintf(f, "%d", newTemp + (TEMPERATURECORRECTION));
fclose(f);
rename("/var/run/dht/temp.x", "/var/run/dht/temp");
t2 = newTemp;
terror=0;
}
else
terror++;
}
sleep(INTERVAL);
}
return 0 ;
}
