/**
* Main function
*
* Parse the command line arguments, then every 5 minutes reads the sensor data
* If the data is valid, push it to IoT lab
*
*/
int main( int argc, char ** argv ) {
char * additional_tags;
size_t len = 0;
int i;
sensor_data data;
if ( wiringPiSetup() == -1 )
exit(EXIT_FAILURE);
// Parse arguments
if (argc >= 3) {
if (argc >= 4) {
// Concat additional tags arguments in a single char*
for (i=3; i<argc; i++) {
len += strlen(argv[i]);
}
len += (argc-2);
additional_tags = malloc(len*sizeof(char));
additional_tags[0] = '\0';
for (i=3; i<argc; i++) {
strcat(additional_tags, argv[i]);
strcat(additional_tags, " ");
}
} else {
additional_tags = malloc(sizeof(char));
additional_tags[0] = '\0';
}
while (1) {
data = read_dht11_dat();
if (data.status == valid) {
printf("%ld Send data hum=%s temp=%s\n", time(NULL), data.hum, data.temp);
sendByTelnet(data, argv[1], argv[2], additional_tags);
} else {
printf("%ld Error getting sensor data, abort push data\n", time(NULL));
}
sleep(5*60); // Restart every 5 minutes
}
} else {
printf("Usage %s token-id:token-key metric [additional tags]\n", argv[0]);
}
free(additional_tags);
return(EXIT_SUCCESS);
}
int main (int argc, char **argv)
{
int wifiCount=0;
int peakSound=0;
int meanSound=0;
int humAttempt=0;
char disp1[30];
char disp2[30];
fd = wiringPiI2CSetup(LCDAddr);
// Setup pcf8591 on base pin 120, and address 0x48
pcf8591Setup (PCF, 0x48);
init();
if (wiringPiSetup () == -1)
exit (1) ;
// Set up wifiCount if the parameter was passed
if (argc>1) {
wifiCount=atoi(argv[1]);
} else {
wifiCount=getWifiCount();
}
peakSound=getPeakSound(1000);
meanSound=getMeanSound(100);
while((read_dht11_dat()!=1)&& (humAttempt !=5)) {
delay(1000);
humAttempt++;
}
clear();
sprintf(disp1,"Mob %d Snd %d (%d)", wifiCount, meanSound, peakSound);
if((humAttempt==5)) {
sprintf(disp2,"Hum ?? Tem ??");
} else {
sprintf(disp2,"Hum %d.%d Tem %d.%d", dht11_dat[0], dht11_dat[1], dht11_dat[2], dht11_dat[3]);
}
write(0, 0, disp1);
write(0, 1, disp2);
return 0 ;
}
int main( void )
{
int a[4]={0,0,0,0};
int i;
if ( wiringPiSetup() < 0 )
return -1;
/*修改灯的状态为输出状态*/
pinMode(LED_1,OUTPUT);
pinMode(LED_2,OUTPUT);
pinMode(LED_3,OUTPUT);
pinMode(LED_4,OUTPUT);
/*传入4个参数分别控制4个灯的状态*/
for(i=0;i<4;i++)
scanf("%d",&a[i]);
control_led_Open(a[0],a[1],a[2],a[3]);
while ( 1 )
{
/*读取dht11数据函数*/
read_dht11_dat();
delay( 1000 );
}
return(0);
}
bool DHT11::trans(void)
{
if (millis() - _timestamp < 1000)
{
Serial.println("double read dht11");
return true;
}
uint8_t dht11_in;
bool res = false;
uint8_t dht11_check_sum = 0;
// start condition
// 1. pull-down i/o pin from 18ms
PORTC &= ~_BV(_pin);
delay(18);
PORTC |= _BV(_pin);
delayMicroseconds(40);
DDRC &= ~_BV(_pin);
delayMicroseconds(40);
dht11_in = PINC & _BV(_pin);
if (dht11_in) {
Serial.println("dht11 start condition 1 not met");
goto _dht11_exit;
}
delayMicroseconds(80);
dht11_in = PINC & _BV(_pin);
if (!dht11_in) {
Serial.println("dht11 start condition 2 not met");
goto _dht11_exit;
}
delayMicroseconds(80);
// now ready for data reception
for (uint8_t i = 0; i < 5; i++)
{
data_buf[i] = read_dht11_dat();
dht11_check_sum += data_buf[i];
}
DDRC |= _BV(_pin);
PORTC |= _BV(_pin);
// check check_sum
if(data_buf[4] != dht11_check_sum - data_buf[4])
{
Serial.println("DHT11 checksum error");
goto _dht11_exit;
}
_timestamp = millis();
res = true;
_dht11_exit:
// re-init
init();
return res;
}
void DHT11() {
byte dht11_dat[5];
byte dht11_in;
byte i;
// output
DHT_SetDir(1);
// pull-down i/o pin for 18ms
DHT_ClrVal();
WAIT1_Waitms(19);
DHT_SetVal();
//pull-up i/o pin for 30ms
WAIT1_Waitus(30);
//input
DHT_SetDir(0);
WAIT1_Waitus(30);
while(!dht11_in)
{
dht11_in = DHT_GetVal();
}
// if (dht11_in) {
// printf("dht11 start condition 1 not met\r\n");
// return;
// }
WAIT1_Waitus(80);//delayMicroseconds(80);
// dht11_in = DHT_GetVal();//dht11_in = PINC & _BV(DHT11_PIN);
// if (!dht11_in) {
// printf("dht11 start condition 2 not met\r\n");
// return;
// }
// WAIT1_Waitus(80);//delayMicroseconds(80);
// now ready for data reception
for (i = 0; i < 5; i++)
dht11_dat[i] = read_dht11_dat();
DHT_SetDir(1);
DHT_SetVal();
byte dht11_check_sum = dht11_dat[0] + dht11_dat[1] + dht11_dat[2]
+ dht11_dat[3];
// check check_sum
if (dht11_dat[4] != dht11_check_sum) {
printf("DHT11 checksum error\r\n");
}
printf("Current humdity = ");
//printf("%d",dht11_dat[0]);
UTIL1_Num8uToStr(strTmp1, sizeof(strTmp1),dht11_dat[0]);
UTIL1_Num8uToStr(strTmp2, sizeof(strTmp2),dht11_dat[1]);
UTIL1_strcat(strTmp1, sizeof(strTmp1),(byte *)".");
UTIL1_strcat(strTmp1, sizeof(strTmp1),strTmp2);
UTIL1_strcat(strTmp1, sizeof(strTmp1),(byte *)"%%\r\n");
//printf((char *)strTmp1);
//printf(".");
//printf((char *)strTmp2);
//printf("%d",dht11_dat[1]);
//printf("%%\r\n");
printf((char *)strTmp1);
printf("temperature = ");
printf("%d",dht11_dat[2]);
printf(".");
printf("%d",dht11_dat[3]);
printf("C \r\n");
// WAIT1_Waitms(2000);//delay(2000);
}
boolean DHT::read(void) {
uint8_t laststate = HIGH;
uint8_t counter = 0;
uint8_t j = 0, i;
unsigned long currenttime;
digitalWrite(_pin, HIGH);
delay(250);
currenttime = millis();
if (currenttime < _lastreadtime) {
_lastreadtime = 0;
}
if (!firstreading && ((currenttime - _lastreadtime) < 2000)) {
return true; // return last correct measurement
}
firstreading = false;
_lastreadtime = millis();
data[0] = data[1] = data[2] = data[3] = data[4] = 0;
pinMode(_pin, OUTPUT);
digitalWrite(_pin, LOW);
delay(10);
// cli();
digitalWrite(_pin, HIGH);
delayMicroseconds(40);
//delay(1);
pinMode(_pin, INPUT);
while(digitalRead(_pin)){
Serial.println("dht11 start condition 1 not met");
}
delayMicroseconds(80);
while(!digitalRead(_pin)){
Serial.println("dht11 start condition 2 not met");
}
delayMicroseconds(80);
for (i=0; i<5; i++){
data[i] = read_dht11_dat();
}
// for ( i=0; i< MAXTIMINGS; i++) {
// counter = 0;
// while (digitalRead(_pin) == laststate) {
// counter++;
// delayMicroseconds(1);
// //delay(1);
// if (counter == 255) {
// break;
// }
// }
// laststate = digitalRead(_pin);
// if (counter == 255) break; // ignore first 3 transitions
// if ((i >= 4) && (i%2 == 0)) {
// data[j/8] <<= 1;
// if (counter > _count)
// data[j/8] |= 1;
// j++;
// }
// }
//sei();
// check we read 40 bits and that the checksum matches
// if ((j >= 40) &&
if (
(data[4] == ((data[0] + data[1] + data[2] + data[3]) & 0xFF)) ) {
return true;
}
return false;
}
void *ChangeTHRepresentation (void *param)
{
(void)param;
OCStackResult result = OC_STACK_ERROR;
modCounter += 1;
if (modCounter % 10 ==
0) // Matching the timing that the Linux Sample Server App uses for the same functionality.
{
byte dht11_dat[5];
byte i;// start condition
digitalWrite(dht11_pin, LOW);
delay(18);
digitalWrite(dht11_pin, HIGH);
delayMicroseconds(1);
pinMode(dht11_pin, INPUT);
delayMicroseconds(40);
if (digitalRead(dht11_pin))
{
Serial.println("dht11 start condition 1 not met"); // wait for DHT response signal: LOW
delay(1000);
return NULL;
}
delayMicroseconds(80);
if (!digitalRead(dht11_pin))
{
Serial.println("dht11 start condition 2 not met"); //wair for second response signal:HIGH
return NULL;
}
delayMicroseconds(80);// now ready for data reception
for (i = 0; i < 5; i++)
{
dht11_dat[i] = read_dht11_dat();
} //recieved 40 bits data. Details are described in datasheet
pinMode(dht11_pin, OUTPUT);
digitalWrite(dht11_pin, HIGH);
byte dht11_check_sum = dht11_dat[0] + dht11_dat[2]; // check check_sum
if (dht11_dat[4] != dht11_check_sum)
{
Serial.println("DHT11 checksum error");
}
Serial.print("Current humdity = ");
Serial.print(dht11_dat[0], DEC);
Serial.print("% ");
Serial.print("temperature = ");
Serial.print(dht11_dat[2], DEC);
Serial.println("C ");
TH.m_humid = dht11_dat[0];
TH.m_temp = dht11_dat[2];
if (g_THUnderObservation)
{
OC_LOG_V(INFO, TAG, " =====> Notifying stack of new humid level %d\n", TH.m_humid);
OC_LOG_V(INFO, TAG, " =====> Notifying stack of new temp level %d\n", TH.m_temp);
result = OCNotifyAllObservers (TH.m_handle, OC_NA_QOS);
if (OC_STACK_NO_OBSERVERS == result)
{
g_THUnderObservation = 0;
}
}
}
return NULL;
}