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- #include <SakuraIO.h>
- #include <Wire.h>
- SakuraIO_I2C sakuraio;
- #define BME280_ADDRESS 0x76
- unsigned long int hum_raw,temp_raw,pres_raw;
- signed long int t_fine;
- uint16_t dig_T1;
- int16_t dig_T2;
- int16_t dig_T3;
- uint16_t dig_P1;
- int16_t dig_P2;
- int16_t dig_P3;
- int16_t dig_P4;
- int16_t dig_P5;
- int16_t dig_P6;
- int16_t dig_P7;
- int16_t dig_P8;
- int16_t dig_P9;
- int8_t dig_H1;
- int16_t dig_H2;
- int8_t dig_H3;
- int16_t dig_H4;
- int16_t dig_H5;
- int8_t dig_H6;
- void setup() {
- uint8_t osrs_t = 1; //Temperature oversampling x 1
- uint8_t osrs_p = 1; //Pressure oversampling x 1
- uint8_t osrs_h = 1; //Humidity oversampling x 1
- uint8_t mode = 3; //Normal mode
- uint8_t t_sb = 5; //Tstandby 1000ms
- uint8_t filter = 0; //Filter off
- uint8_t spi3w_en = 0; //3-wire SPI Disable
- uint8_t ctrl_meas_reg = (osrs_t << 5) | (osrs_p << 2) | mode;
- uint8_t config_reg = (t_sb << 5) | (filter << 2) | spi3w_en;
- uint8_t ctrl_hum_reg = osrs_h;
- Serial.begin(9600);
- Serial.print("Waiting to come online");
- for(;;){
- if( (sakuraio.getConnectionStatus() & 0x80) == 0x80 ) break;
- Serial.print(".");
- delay(1000);
- }
- Serial.println("");
- writeReg(0xF2,ctrl_hum_reg);
- writeReg(0xF4,ctrl_meas_reg);
- writeReg(0xF5,config_reg);
- readTrim(); //
- }
- uint8_t ret;
- void loop() {
- double temp_act = 0.0, press_act = 0.0,hum_act=0.0;
- signed long int temp_cal;
- unsigned long int press_cal,hum_cal;
- readData();
- temp_cal = calibration_T(temp_raw);
- press_cal = calibration_P(pres_raw);
- hum_cal = calibration_H(hum_raw);
- temp_act = (double)temp_cal / 100.0;
- press_act = (double)press_cal / 100.0;
- hum_act = (double)hum_cal / 1024.0;
- ret = sakuraio.enqueueTx((uint8_t)0, (int32_t)temp_act);
- Serial.print("TEMP : ");
- Serial.print(temp_act);
- ret = sakuraio.enqueueTx((uint8_t)1, (int32_t)press_act);
- Serial.print(" DegC PRESS : ");
- Serial.print(press_act);
- ret = sakuraio.enqueueTx((uint8_t)2, (int32_t)hum_act);
- Serial.print(" hPa HUM : ");
- Serial.print(hum_act);
- Serial.println(" %");
- delay(1000);
- uint8_t avail;
- uint8_t queued;
- sakuraio.getTxQueueLength(&avail, &queued);
- Serial.print("Tx Available=");
- Serial.print(avail);
- Serial.print(" Queued=");
- Serial.println(queued);
- if(queued >= 30){
- ret = sakuraio.clearTx();
- Serial.print("Clear ");
- Serial.println(ret);
- }else if(queued >= 5){
- ret = sakuraio.send();
- Serial.print("Send ");
- Serial.println(ret);
- }
- delay(5000);
- }
- void readTrim()
- {
- uint8_t data[32],i=0; // Fix 2014/04/06
- Wire.beginTransmission(BME280_ADDRESS);
- Wire.write(0x88);
- Wire.endTransmission();
- Wire.requestFrom(BME280_ADDRESS,24); // Fix 2014/04/06
- while(Wire.available()){
- data[i] = Wire.read();
- i++;
- }
- Wire.beginTransmission(BME280_ADDRESS); // Add 2014/04/06
- Wire.write(0xA1); // Add 2014/04/06
- Wire.endTransmission(); // Add 2014/04/06
- Wire.requestFrom(BME280_ADDRESS,1); // Add 2014/04/06
- data[i] = Wire.read(); // Add 2014/04/06
- i++; // Add 2014/04/06
- Wire.beginTransmission(BME280_ADDRESS);
- Wire.write(0xE1);
- Wire.endTransmission();
- Wire.requestFrom(BME280_ADDRESS,7); // Fix 2014/04/06
- while(Wire.available()){
- data[i] = Wire.read();
- i++;
- }
- dig_T1 = (data[1] << 8) | data[0];
- dig_T2 = (data[3] << 8) | data[2];
- dig_T3 = (data[5] << 8) | data[4];
- dig_P1 = (data[7] << 8) | data[6];
- dig_P2 = (data[9] << 8) | data[8];
- dig_P3 = (data[11]<< 8) | data[10];
- dig_P4 = (data[13]<< 8) | data[12];
- dig_P5 = (data[15]<< 8) | data[14];
- dig_P6 = (data[17]<< 8) | data[16];
- dig_P7 = (data[19]<< 8) | data[18];
- dig_P8 = (data[21]<< 8) | data[20];
- dig_P9 = (data[23]<< 8) | data[22];
- dig_H1 = data[24];
- dig_H2 = (data[26]<< 8) | data[25];
- dig_H3 = data[27];
- dig_H4 = (data[28]<< 4) | (0x0F & data[29]);
- dig_H5 = (data[30] << 4) | ((data[29] >> 4) & 0x0F); // Fix 2014/04/06
- dig_H6 = data[31]; // Fix 2014/04/06
- }
- void writeReg(uint8_t reg_address, uint8_t data)
- {
- Wire.beginTransmission(BME280_ADDRESS);
- Wire.write(reg_address);
- Wire.write(data);
- Wire.endTransmission();
- }
- void readData()
- {
- int i = 0;
- uint32_t data[8];
- Wire.beginTransmission(BME280_ADDRESS);
- Wire.write(0xF7);
- Wire.endTransmission();
- Wire.requestFrom(BME280_ADDRESS,8);
- while(Wire.available()){
- data[i] = Wire.read();
- i++;
- }
- pres_raw = (data[0] << 12) | (data[1] << 4) | (data[2] >> 4);
- temp_raw = (data[3] << 12) | (data[4] << 4) | (data[5] >> 4);
- hum_raw = (data[6] << 8) | data[7];
- }
- signed long int calibration_T(signed long int adc_T)
- {
- signed long int var1, var2, T;
- var1 = ((((adc_T >> 3) - ((signed long int)dig_T1<<1))) * ((signed long int)dig_T2)) >> 11;
- var2 = (((((adc_T >> 4) - ((signed long int)dig_T1)) * ((adc_T>>4) - ((signed long int)dig_T1))) >> 12) * ((signed long int)dig_T3)) >> 14;
- t_fine = var1 + var2;
- T = (t_fine * 5 + 128) >> 8;
- return T;
- }
- unsigned long int calibration_P(signed long int adc_P)
- {
- signed long int var1, var2;
- unsigned long int P;
- var1 = (((signed long int)t_fine)>>1) - (signed long int)64000;
- var2 = (((var1>>2) * (var1>>2)) >> 11) * ((signed long int)dig_P6);
- var2 = var2 + ((var1*((signed long int)dig_P5))<<1);
- var2 = (var2>>2)+(((signed long int)dig_P4)<<16);
- var1 = (((dig_P3 * (((var1>>2)*(var1>>2)) >> 13)) >>3) + ((((signed long int)dig_P2) * var1)>>1))>>18;
- var1 = ((((32768+var1))*((signed long int)dig_P1))>>15);
- if (var1 == 0)
- {
- return 0;
- }
- P = (((unsigned long int)(((signed long int)1048576)-adc_P)-(var2>>12)))*3125;
- if(P<0x80000000)
- {
- P = (P << 1) / ((unsigned long int) var1);
- }
- else
- {
- P = (P / (unsigned long int)var1) * 2;
- }
- var1 = (((signed long int)dig_P9) * ((signed long int)(((P>>3) * (P>>3))>>13)))>>12;
- var2 = (((signed long int)(P>>2)) * ((signed long int)dig_P8))>>13;
- P = (unsigned long int)((signed long int)P + ((var1 + var2 + dig_P7) >> 4));
- return P;
- }
- unsigned long int calibration_H(signed long int adc_H)
- {
- signed long int v_x1;
- v_x1 = (t_fine - ((signed long int)76800));
- v_x1 = (((((adc_H << 14) -(((signed long int)dig_H4) << 20) - (((signed long int)dig_H5) * v_x1)) +
- ((signed long int)16384)) >> 15) * (((((((v_x1 * ((signed long int)dig_H6)) >> 10) *
- (((v_x1 * ((signed long int)dig_H3)) >> 11) + ((signed long int) 32768))) >> 10) + (( signed long int)2097152)) *
- ((signed long int) dig_H2) + 8192) >> 14));
- v_x1 = (v_x1 - (((((v_x1 >> 15) * (v_x1 >> 15)) >> 7) * ((signed long int)dig_H1)) >> 4));
- v_x1 = (v_x1 < 0 ? 0 : v_x1);
- v_x1 = (v_x1 > 419430400 ? 419430400 : v_x1);
- return (unsigned long int)(v_x1 >> 12);
- }
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