float sht11_Humidity(int temprawdata,int humidityrawdata)
{
int _val; // Raw humidity value returned from sensor
float _linearHumidity; // Humidity with linear correction applied
float _correctedHumidity; // Temperature-corrected humidity
float _temperature; // Raw temperature value
// Conversion coefficients from SHT15 datasheet
const float C1 = -4.0; // for 12 Bit
const float C2 = 0.0405; // for 12 Bit
const float C3 = -0.0000028; // for 12 Bit
const float T1 = 0.01; // for 14 Bit @ 5V
const float T2 = 0.00008; // for 14 Bit @ 5V
_val = humidityrawdata;
_linearHumidity = C1 + C2 * _val + C3 * _val * _val;
// Get current temperature for humidity correction
_temperature = sht11_TemperatureC(temprawdata);
// Correct humidity value for current temperature
_correctedHumidity = (_temperature - 25.0 ) * (T1 + T2 * _val) + _linearHumidity;
return (_correctedHumidity);
}
/*---------------------------------------------------------------------------*/
static void
broadcast_recv(struct broadcast_conn *c, const rimeaddr_t *from)
{
leds_toggle(LEDS_RF_RX);
//printf("Received %u bytes: '0x%04x'\n", packetbuf_datalen(),
// *(uint16_t *)packetbuf_dataptr());
if (rwt == 0)
{
temperature_r=*(uint16_t *)packetbuf_dataptr();
tc_r=sht11_TemperatureC(temperature_r);
printf("temperature_received:%u.%u\n",(int)tc_r,((int)(tc_r*10))%10);
rwt=1;
}
else
{
humidity_r=*(uint16_t *)packetbuf_dataptr();
hc_r=sht11_Humidity(temperature_r,humidity_r);
printf("humidity_received:%u.%u\n",(int)hc_r,((int)(hc_r*10))%10);
rwt=0;
}
}
/*---------------------------------------------------数据采集上传模考---------------------------------------------*/
static void udp_send_data(struct udp_tx *udp_tx_info)
{
static char pdata_buf[20];
char data_buf[3];
#if sht11
float tc,hc;
sht11_init();
unsigned int tempera = sht11_temp();
unsigned int humidity = sht11_humidity();
tc=sht11_TemperatureC(tempera);
hc=sht11_Humidity(tempera,humidity);
printf("sorce Tc:%d;Hc:%d\n",(int)tc,(int)hc);
// tc=25.5;
// hc=57.2;
printf("Tc:%d;Hc:%d\n",(int)tc,(int)hc);
pdata_buf[0]=0x02;
sprintf(data_buf,"%d",(int)tc);
memcpy(&pdata_buf[1],data_buf,3);
pdata_buf[4]=0x03;
sprintf(data_buf,"%d",(int)hc);
memcpy(&pdata_buf[5],data_buf,3);
// sprintf(temp_data_buf,"%d.%d",(int)hc,((int)(hc*10))%10);
printf("temp_data:%s\n",pdata_buf);
#endif
#if sensor
int16_t temperature;
temperature = sensor_temp_get(TEMP_UNIT_CELCIUS);
pdata_buf[0]=0x02;
sprintf(data_buf,"%d",temperature);
memcpy(&pdata_buf[1],data_buf,3);
printf("temp_data:%s\n",pdata_buf);
#endif
#if light_sensor
int16_t illumination;
illumination=60;
// modbus_init();
// illumination= modbus_get();
printf("illumination_data:%d\n",illumination);
data_buf[0]=0x00;
data_buf[1]=0xff&(illumination>>8);
data_buf[2]=0xff&illumination;
pdata_buf[0]=0x04;
memcpy(&pdata_buf[1],data_buf,3);
printf("temp_data:%s\n",pdata_buf);
#endif
#if bh1750_sensor
int16_t illumination;
illumination=60;
bh1750_init();
illumination= bh1750_light();
printf("illumination_data:%d\n",illumination);
data_buf[0]=0x00;
data_buf[1]=0xff&(illumination>>8);
data_buf[2]=0xff&illumination;
pdata_buf[0]=0x04;
memcpy(&pdata_buf[1],data_buf,3);
printf("temp_data:%s\n",pdata_buf);
#endif
uint8_t sum = 0;
udp_tx_info->buf[0] = udp_header[0];
udp_tx_info->buf[1] = udp_header[1];
udp_tx_info->buf[2] =version[0];
udp_tx_info->buf[3] = DATA_SEND ; //0x01
udp_tx_info->buf[4]=user.userid[3];
udp_tx_info->buf[5]=user.userid[2];
udp_tx_info->buf[6]=user.userid[1];
udp_tx_info->buf[7]=user.userid[0];
udp_tx_info->buf[8] = K-8;
memcpy(&udp_tx_info->buf[9],udp_id,K-8);
memcpy(&udp_tx_info->buf[K+1],device_type,4);
udp_tx_info->buf[K+5] = 0x00;
udp_tx_info->buf[K+6] = 0x14;
memcpy(&udp_tx_info->buf[K+7],pdata_buf,20);
sum = calac_checksum(udp_tx_info);
udp_tx_info->buf[K+27] = sum;
udp_tx_info->buf[K+28] = 0x0D;
udp_tx_info->buf[K+29] = 0x0A;
udp_tx_info->len = K+30;
}
