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Tasmota/tasmota/tasmota_xsns_sensor/xsns_09_bmp.ino

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/*
xsns_09_bmp.ino - BMP pressure, temperature, humidity and gas sensor support for Tasmota
Copyright (C) 2021 Heiko Krupp and Theo Arends
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef USE_I2C
#ifdef USE_BMP
/*********************************************************************************************\
* BMP085, BMP180, BMP280, BME280, BME680 - Pressure, Temperature, Humidity (BME280/BME680) and gas (BME680)
*
* Source: Heiko Krupp and Adafruit Industries
*
* I2C Address: 0x76 or 0x77
\*********************************************************************************************/
#define XSNS_09 9
#define XI2C_10 10 // See I2CDEVICES.md
#ifdef USE_BME680
#define USE_BME68X
#endif
#define BMP_ADDR1 0x76
#define BMP_ADDR2 0x77
#define BMP180_CHIPID 0x55
#define BMP280_CHIPID 0x58
#define BME280_CHIPID 0x60
#define BME680_CHIPID 0x61
#define BMP_REGISTER_CHIPID 0xD0
#define BMP_REGISTER_RESET 0xE0 // Register to reset to power on defaults (used for sleep)
#define BMP_CMND_RESET 0xB6 // I2C Parameter for RESET to put BMP into reset state
#ifdef ESP32
#define BMP_MAX_SENSORS 4 // 2 busses
#else
#define BMP_MAX_SENSORS 2
#endif
const char kBmpTypes[] PROGMEM = "BMP180|BMP280|BME280|BME680";
typedef struct {
uint8_t bmp_address; // I2C address
uint8_t bmp_bus; // I2C bus
char bmp_name[7]; // Sensor name - "BMPXXX"
uint8_t bmp_type;
uint8_t bmp_model;
#ifdef USE_BME68X
uint8_t bme680_state;
float bmp_gas_resistance;
#endif // USE_BME68X
float bmp_temperature;
float bmp_pressure;
float bmp_humidity;
} bmp_sensors_t;
uint8_t bmp_addresses[] = { BMP_ADDR1, BMP_ADDR2 };
uint8_t bmp_count = 0;
#ifdef USE_DEEPSLEEP
uint8_t bmp_deepsleep = 0; // Prevent updating measurments once BMP has been put to sleep (just before ESP enters deepsleep)
#endif
bmp_sensors_t *bmp_sensors = nullptr;
/*********************************************************************************************\
* BMP085 and BME180
\*********************************************************************************************/
#define BMP180_REG_CONTROL 0xF4
#define BMP180_REG_RESULT 0xF6
#define BMP180_TEMPERATURE 0x2E
#define BMP180_PRESSURE3 0xF4 // Max. oversampling -> OSS = 3
#define BMP180_AC1 0xAA
#define BMP180_AC2 0xAC
#define BMP180_AC3 0xAE
#define BMP180_AC4 0xB0
#define BMP180_AC5 0xB2
#define BMP180_AC6 0xB4
#define BMP180_VB1 0xB6
#define BMP180_VB2 0xB8
#define BMP180_MB 0xBA
#define BMP180_MC 0xBC
#define BMP180_MD 0xBE
#define BMP180_OSS 3
typedef struct {
int16_t cal_ac1;
int16_t cal_ac2;
int16_t cal_ac3;
int16_t cal_b1;
int16_t cal_b2;
int16_t cal_mc;
int16_t cal_md;
uint16_t cal_ac4;
uint16_t cal_ac5;
uint16_t cal_ac6;
} bmp180_cal_data_t;
bmp180_cal_data_t *bmp180_cal_data = nullptr;
bool Bmp180Calibration(uint8_t bmp_idx) {
if (!bmp180_cal_data) {
bmp180_cal_data = (bmp180_cal_data_t*)malloc(BMP_MAX_SENSORS * sizeof(bmp180_cal_data_t));
}
if (!bmp180_cal_data) { return false; }
uint8_t address = bmp_sensors[bmp_idx].bmp_address;
uint8_t bus = bmp_sensors[bmp_idx].bmp_bus;
bmp180_cal_data[bmp_idx].cal_ac1 = I2cRead16(address, BMP180_AC1, bus);
bmp180_cal_data[bmp_idx].cal_ac2 = I2cRead16(address, BMP180_AC2, bus);
bmp180_cal_data[bmp_idx].cal_ac3 = I2cRead16(address, BMP180_AC3, bus);
bmp180_cal_data[bmp_idx].cal_ac4 = I2cRead16(address, BMP180_AC4, bus);
bmp180_cal_data[bmp_idx].cal_ac5 = I2cRead16(address, BMP180_AC5, bus);
bmp180_cal_data[bmp_idx].cal_ac6 = I2cRead16(address, BMP180_AC6, bus);
bmp180_cal_data[bmp_idx].cal_b1 = I2cRead16(address, BMP180_VB1, bus);
bmp180_cal_data[bmp_idx].cal_b2 = I2cRead16(address, BMP180_VB2, bus);
bmp180_cal_data[bmp_idx].cal_mc = I2cRead16(address, BMP180_MC, bus);
bmp180_cal_data[bmp_idx].cal_md = I2cRead16(address, BMP180_MD, bus);
// Check for Errors in calibration data. Value never is 0x0000 or 0xFFFF
if (!bmp180_cal_data[bmp_idx].cal_ac1 |
!bmp180_cal_data[bmp_idx].cal_ac2 |
!bmp180_cal_data[bmp_idx].cal_ac3 |
!bmp180_cal_data[bmp_idx].cal_ac4 |
!bmp180_cal_data[bmp_idx].cal_ac5 |
!bmp180_cal_data[bmp_idx].cal_ac6 |
!bmp180_cal_data[bmp_idx].cal_b1 |
!bmp180_cal_data[bmp_idx].cal_b2 |
!bmp180_cal_data[bmp_idx].cal_mc |
!bmp180_cal_data[bmp_idx].cal_md) {
return false;
}
if ((bmp180_cal_data[bmp_idx].cal_ac1 == (int16_t)0xFFFF) |
(bmp180_cal_data[bmp_idx].cal_ac2 == (int16_t)0xFFFF) |
(bmp180_cal_data[bmp_idx].cal_ac3 == (int16_t)0xFFFF) |
(bmp180_cal_data[bmp_idx].cal_ac4 == 0xFFFF) |
(bmp180_cal_data[bmp_idx].cal_ac5 == 0xFFFF) |
(bmp180_cal_data[bmp_idx].cal_ac6 == 0xFFFF) |
(bmp180_cal_data[bmp_idx].cal_b1 == (int16_t)0xFFFF) |
(bmp180_cal_data[bmp_idx].cal_b2 == (int16_t)0xFFFF) |
(bmp180_cal_data[bmp_idx].cal_mc == (int16_t)0xFFFF) |
(bmp180_cal_data[bmp_idx].cal_md == (int16_t)0xFFFF)) {
return false;
}
return true;
}
void Bmp180Read(uint8_t bmp_idx) {
if (!bmp180_cal_data) { return; }
uint8_t address = bmp_sensors[bmp_idx].bmp_address;
uint8_t bus = bmp_sensors[bmp_idx].bmp_bus;
I2cWrite8(address, BMP180_REG_CONTROL, BMP180_TEMPERATURE, bus);
delay(5); // 5ms conversion time
int ut = I2cRead16(address, BMP180_REG_RESULT, bus);
int32_t xt1 = (ut - (int32_t)bmp180_cal_data[bmp_idx].cal_ac6) * ((int32_t)bmp180_cal_data[bmp_idx].cal_ac5) >> 15;
int32_t xt2 = ((int32_t)bmp180_cal_data[bmp_idx].cal_mc << 11) / (xt1 + (int32_t)bmp180_cal_data[bmp_idx].cal_md);
int32_t bmp180_b5 = xt1 + xt2;
bmp_sensors[bmp_idx].bmp_temperature = ((bmp180_b5 + 8) >> 4) / 10.0f;
I2cWrite8(address, BMP180_REG_CONTROL, BMP180_PRESSURE3, bus); // Highest resolution
delay(2 + (4 << BMP180_OSS)); // 26ms conversion time at ultra high resolution
uint32_t up = I2cRead24(address, BMP180_REG_RESULT, bus);
up >>= (8 - BMP180_OSS);
int32_t b6 = bmp180_b5 - 4000;
int32_t x1 = ((int32_t)bmp180_cal_data[bmp_idx].cal_b2 * ((b6 * b6) >> 12)) >> 11;
int32_t x2 = ((int32_t)bmp180_cal_data[bmp_idx].cal_ac2 * b6) >> 11;
int32_t x3 = x1 + x2;
int32_t b3 = ((((int32_t)bmp180_cal_data[bmp_idx].cal_ac1 * 4 + x3) << BMP180_OSS) + 2) >> 2;
x1 = ((int32_t)bmp180_cal_data[bmp_idx].cal_ac3 * b6) >> 13;
x2 = ((int32_t)bmp180_cal_data[bmp_idx].cal_b1 * ((b6 * b6) >> 12)) >> 16;
x3 = ((x1 + x2) + 2) >> 2;
uint32_t b4 = ((uint32_t)bmp180_cal_data[bmp_idx].cal_ac4 * (uint32_t)(x3 + 32768)) >> 15;
uint32_t b7 = ((uint32_t)up - b3) * (uint32_t)(50000UL >> BMP180_OSS);
int32_t p;
if (b7 < 0x80000000) {
p = (b7 * 2) / b4;
}
else {
p = (b7 / b4) * 2;
}
x1 = (p >> 8) * (p >> 8);
x1 = (x1 * 3038) >> 16;
x2 = (-7357 * p) >> 16;
p += ((x1 + x2 + (int32_t)3791) >> 4);
bmp_sensors[bmp_idx].bmp_pressure = (float)p / 100.0f; // convert to mbar
}
/*********************************************************************************************\
* BMP280 and BME280
*
* Programmer : BMP280/BME280 Datasheet and Adafruit with changes by Theo Arends
\*********************************************************************************************/
#define BME280_REGISTER_CONTROLHUMID 0xF2
#define BME280_REGISTER_CONTROL 0xF4
#define BME280_REGISTER_CONFIG 0xF5
#define BME280_REGISTER_PRESSUREDATA 0xF7
#define BME280_REGISTER_TEMPDATA 0xFA
#define BME280_REGISTER_HUMIDDATA 0xFD
#define BME280_REGISTER_DIG_T1 0x88
#define BME280_REGISTER_DIG_T2 0x8A
#define BME280_REGISTER_DIG_T3 0x8C
#define BME280_REGISTER_DIG_P1 0x8E
#define BME280_REGISTER_DIG_P2 0x90
#define BME280_REGISTER_DIG_P3 0x92
#define BME280_REGISTER_DIG_P4 0x94
#define BME280_REGISTER_DIG_P5 0x96
#define BME280_REGISTER_DIG_P6 0x98
#define BME280_REGISTER_DIG_P7 0x9A
#define BME280_REGISTER_DIG_P8 0x9C
#define BME280_REGISTER_DIG_P9 0x9E
#define BME280_REGISTER_DIG_H1 0xA1
#define BME280_REGISTER_DIG_H2 0xE1
#define BME280_REGISTER_DIG_H3 0xE3
#define BME280_REGISTER_DIG_H4 0xE4
#define BME280_REGISTER_DIG_H5 0xE5
#define BME280_REGISTER_DIG_H6 0xE7
typedef struct {
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;
int16_t dig_H2;
int16_t dig_H4;
int16_t dig_H5;
uint8_t dig_H1;
uint8_t dig_H3;
int8_t dig_H6;
} Bme280CalibrationData_t;
Bme280CalibrationData_t *Bme280CalibrationData = nullptr;
bool Bmx280Calibrate(uint8_t bmp_idx) {
// if (I2cRead8(bmp_address, BMP_REGISTER_CHIPID, bus) != BME280_CHIPID) return false;
if (!Bme280CalibrationData) {
Bme280CalibrationData = (Bme280CalibrationData_t*)malloc(BMP_MAX_SENSORS * sizeof(Bme280CalibrationData_t));
}
if (!Bme280CalibrationData) { return false; }
uint8_t address = bmp_sensors[bmp_idx].bmp_address;
uint8_t bus = bmp_sensors[bmp_idx].bmp_bus;
Bme280CalibrationData[bmp_idx].dig_T1 = I2cRead16LE(address, BME280_REGISTER_DIG_T1, bus);
Bme280CalibrationData[bmp_idx].dig_T2 = I2cReadS16_LE(address, BME280_REGISTER_DIG_T2, bus);
Bme280CalibrationData[bmp_idx].dig_T3 = I2cReadS16_LE(address, BME280_REGISTER_DIG_T3, bus);
Bme280CalibrationData[bmp_idx].dig_P1 = I2cRead16LE(address, BME280_REGISTER_DIG_P1, bus);
Bme280CalibrationData[bmp_idx].dig_P2 = I2cReadS16_LE(address, BME280_REGISTER_DIG_P2, bus);
Bme280CalibrationData[bmp_idx].dig_P3 = I2cReadS16_LE(address, BME280_REGISTER_DIG_P3, bus);
Bme280CalibrationData[bmp_idx].dig_P4 = I2cReadS16_LE(address, BME280_REGISTER_DIG_P4, bus);
Bme280CalibrationData[bmp_idx].dig_P5 = I2cReadS16_LE(address, BME280_REGISTER_DIG_P5, bus);
Bme280CalibrationData[bmp_idx].dig_P6 = I2cReadS16_LE(address, BME280_REGISTER_DIG_P6, bus);
Bme280CalibrationData[bmp_idx].dig_P7 = I2cReadS16_LE(address, BME280_REGISTER_DIG_P7, bus);
Bme280CalibrationData[bmp_idx].dig_P8 = I2cReadS16_LE(address, BME280_REGISTER_DIG_P8, bus);
Bme280CalibrationData[bmp_idx].dig_P9 = I2cReadS16_LE(address, BME280_REGISTER_DIG_P9, bus);
if (BME280_CHIPID == bmp_sensors[bmp_idx].bmp_type) { // #1051
Bme280CalibrationData[bmp_idx].dig_H1 = I2cRead8(address, BME280_REGISTER_DIG_H1, bus);
Bme280CalibrationData[bmp_idx].dig_H2 = I2cReadS16_LE(address, BME280_REGISTER_DIG_H2, bus);
Bme280CalibrationData[bmp_idx].dig_H3 = I2cRead8(address, BME280_REGISTER_DIG_H3, bus);
Bme280CalibrationData[bmp_idx].dig_H4 = (I2cRead8(address, BME280_REGISTER_DIG_H4, bus) << 4) | (I2cRead8(address, BME280_REGISTER_DIG_H4 + 1, bus) & 0xF);
Bme280CalibrationData[bmp_idx].dig_H5 = (I2cRead8(address, BME280_REGISTER_DIG_H5 + 1, bus) << 4) | (I2cRead8(address, BME280_REGISTER_DIG_H5, bus) >> 4);
Bme280CalibrationData[bmp_idx].dig_H6 = (int8_t)I2cRead8(address, BME280_REGISTER_DIG_H6, bus);
I2cWrite8(address, BME280_REGISTER_CONTROL, 0x00, bus); // sleep mode since writes to config can be ignored in normal mode (Datasheet 5.4.5/6 page 27)
// Set before CONTROL_meas (DS 5.4.3)
I2cWrite8(address, BME280_REGISTER_CONTROLHUMID, 0x01, bus); // 1x oversampling
I2cWrite8(address, BME280_REGISTER_CONFIG, 0xA0, bus); // 1sec standby between measurements (to limit self heating), IIR filter off
I2cWrite8(address, BME280_REGISTER_CONTROL, 0x27, bus); // 1x oversampling, normal mode
} else {
I2cWrite8(address, BME280_REGISTER_CONTROL, 0xB7, bus); // 16x oversampling, normal mode (Adafruit)
}
return true;
}
void Bme280Read(uint8_t bmp_idx) {
if (!Bme280CalibrationData) { return; }
uint8_t address = bmp_sensors[bmp_idx].bmp_address;
uint8_t bus = bmp_sensors[bmp_idx].bmp_bus;
int32_t adc_T = I2cRead24(address, BME280_REGISTER_TEMPDATA, bus);
adc_T >>= 4;
int32_t vart1 = ((((adc_T >> 3) - ((int32_t)Bme280CalibrationData[bmp_idx].dig_T1 << 1))) * ((int32_t)Bme280CalibrationData[bmp_idx].dig_T2)) >> 11;
int32_t vart2 = (((((adc_T >> 4) - ((int32_t)Bme280CalibrationData[bmp_idx].dig_T1)) * ((adc_T >> 4) - ((int32_t)Bme280CalibrationData[bmp_idx].dig_T1))) >> 12) *
((int32_t)Bme280CalibrationData[bmp_idx].dig_T3)) >> 14;
int32_t t_fine = vart1 + vart2;
float T = (t_fine * 5 + 128) >> 8;
bmp_sensors[bmp_idx].bmp_temperature = T / 100.0f;
int32_t adc_P = I2cRead24(address, BME280_REGISTER_PRESSUREDATA, bus);
adc_P >>= 4;
int64_t var1 = ((int64_t)t_fine) - 128000;
int64_t var2 = var1 * var1 * (int64_t)Bme280CalibrationData[bmp_idx].dig_P6;
var2 = var2 + ((var1 * (int64_t)Bme280CalibrationData[bmp_idx].dig_P5) << 17);
var2 = var2 + (((int64_t)Bme280CalibrationData[bmp_idx].dig_P4) << 35);
var1 = ((var1 * var1 * (int64_t)Bme280CalibrationData[bmp_idx].dig_P3) >> 8) + ((var1 * (int64_t)Bme280CalibrationData[bmp_idx].dig_P2) << 12);
var1 = (((((int64_t)1) << 47) + var1)) * ((int64_t)Bme280CalibrationData[bmp_idx].dig_P1) >> 33;
if (0 == var1) {
return; // avoid exception caused by division by zero
}
int64_t p = 1048576 - adc_P;
p = (((p << 31) - var2) * 3125) / var1;
var1 = (((int64_t)Bme280CalibrationData[bmp_idx].dig_P9) * (p >> 13) * (p >> 13)) >> 25;
var2 = (((int64_t)Bme280CalibrationData[bmp_idx].dig_P8) * p) >> 19;
p = ((p + var1 + var2) >> 8) + (((int64_t)Bme280CalibrationData[bmp_idx].dig_P7) << 4);
bmp_sensors[bmp_idx].bmp_pressure = (float)p / 25600.0f;
if (BMP280_CHIPID == bmp_sensors[bmp_idx].bmp_type) { return; }
int32_t adc_H = I2cRead16(address, BME280_REGISTER_HUMIDDATA, bus);
int32_t v_x1_u32r = (t_fine - ((int32_t)76800));
v_x1_u32r = (((((adc_H << 14) - (((int32_t)Bme280CalibrationData[bmp_idx].dig_H4) << 20) -
(((int32_t)Bme280CalibrationData[bmp_idx].dig_H5) * v_x1_u32r)) + ((int32_t)16384)) >> 15) *
(((((((v_x1_u32r * ((int32_t)Bme280CalibrationData[bmp_idx].dig_H6)) >> 10) *
(((v_x1_u32r * ((int32_t)Bme280CalibrationData[bmp_idx].dig_H3)) >> 11) + ((int32_t)32768))) >> 10) +
((int32_t)2097152)) * ((int32_t)Bme280CalibrationData[bmp_idx].dig_H2) + 8192) >> 14));
v_x1_u32r = (v_x1_u32r - (((((v_x1_u32r >> 15) * (v_x1_u32r >> 15)) >> 7) *
((int32_t)Bme280CalibrationData[bmp_idx].dig_H1)) >> 4));
v_x1_u32r = (v_x1_u32r < 0) ? 0 : v_x1_u32r;
v_x1_u32r = (v_x1_u32r > 419430400) ? 419430400 : v_x1_u32r;
float h = (v_x1_u32r >> 12);
bmp_sensors[bmp_idx].bmp_humidity = h / 1024.0f;
}
#ifdef USE_BME68X
/*********************************************************************************************\
* BME68x support by Bosch https://github.com/BoschSensortec/BME68x-Sensor-API
\*********************************************************************************************/
//#define BME68X_DO_NOT_USE_FPU
#include <bme68x.h>
struct bme68x_dev *bme_dev = nullptr;
struct bme68x_conf *bme_conf = nullptr;
struct bme68x_heatr_conf *bme_heatr_conf = nullptr;
uint8_t bmp68x_bus = 0;
// bme68x callbacks
static void Bme68x_Delayus(uint32_t period, void *intf_ptr) {
delayMicroseconds(period);
}
int8_t Bme68x_i2c_read(uint8_t reg_addr, uint8_t *reg_data, uint32_t len, void *intf_ptr) {
uint8_t dev_addr = *(uint8_t*)intf_ptr;
return I2cReadBuffer(dev_addr, reg_addr, reg_data, (uint16_t)len, bmp68x_bus);
}
int8_t Bme68x_i2c_write(uint8_t reg_addr, const uint8_t *reg_data, uint32_t len, void *intf_ptr) {
uint8_t dev_addr = *(uint8_t*)intf_ptr;
return I2cWriteBuffer(dev_addr, reg_addr, (uint8_t *)reg_data, (uint16_t)len, bmp68x_bus);
}
bool Bme680Init(uint8_t bmp_idx) {
bmp68x_bus = bmp_sensors[bmp_idx].bmp_bus;
if (!bme_dev) {
bme_heatr_conf = (bme68x_heatr_conf*)malloc(BMP_MAX_SENSORS * sizeof(bme68x_heatr_conf));
bme_conf = (bme68x_conf*)malloc(BMP_MAX_SENSORS * sizeof(bme68x_conf));
bme_dev = (bme68x_dev*)malloc(BMP_MAX_SENSORS * sizeof(bme68x_dev));
}
if (!bme_dev) { return false; }
bme_dev[bmp_idx].intf_ptr = &bmp_sensors[bmp_idx].bmp_address;
bme_dev[bmp_idx].intf = BME68X_I2C_INTF;
bme_dev[bmp_idx].read = Bme68x_i2c_read;
bme_dev[bmp_idx].write = Bme68x_i2c_write;
bme_dev[bmp_idx].delay_us = Bme68x_Delayus;
// amb_temp can be set to 25 prior to configuring the gas sensor
// or by performing a few temperature readings without operating the gas sensor.
bme_dev[bmp_idx].amb_temp = 25;
int8_t rslt = bme68x_init(&bme_dev[bmp_idx]);
if (rslt != BME68X_OK) { return false; }
// AddLog(LOG_LEVEL_DEBUG, PSTR("BME: Gas variant %d"), bme_dev[bmp_idx].variant_id);
// rslt = bme68x_get_conf(&bme_conf[bmp_idx], &bme_dev[bmp_idx]);
// if (rslt != BME68X_OK) { return false; }
// Set the temperature, pressure and humidity settings
bme_conf[bmp_idx].os_hum = BME68X_OS_2X;
bme_conf[bmp_idx].os_pres = BME68X_OS_4X;
bme_conf[bmp_idx].os_temp = BME68X_OS_8X;
bme_conf[bmp_idx].filter = BME68X_FILTER_SIZE_3;
bme_conf[bmp_idx].odr = BME68X_ODR_NONE; // This parameter defines the sleep duration after each profile
rslt = bme68x_set_conf(&bme_conf[bmp_idx], &bme_dev[bmp_idx]);
if (rslt != BME68X_OK) { return false; }
// Set the gas sensor settings
bme_heatr_conf[bmp_idx].enable = BME68X_ENABLE;
// Create a ramp heat waveform in 3 steps
bme_heatr_conf[bmp_idx].heatr_temp = 320; // degree Celsius
bme_heatr_conf[bmp_idx].heatr_dur = 150; // milliseconds
rslt = bme68x_set_heatr_conf(BME68X_FORCED_MODE, &bme_heatr_conf[bmp_idx], &bme_dev[bmp_idx]);
if (rslt != BME68X_OK) { return false; }
bmp_sensors[bmp_idx].bme680_state = 0;
return true;
}
void Bme680Read(uint8_t bmp_idx) {
if (!bme_dev) { return; }
bmp68x_bus = bmp_sensors[bmp_idx].bmp_bus;
int8_t rslt = BME68X_OK;
if (BME680_CHIPID == bmp_sensors[bmp_idx].bmp_type) {
if (0 == bmp_sensors[bmp_idx].bme680_state) {
// Trigger the next measurement if you would like to read data out continuously
rslt = bme68x_set_op_mode(BME68X_FORCED_MODE, &bme_dev[bmp_idx]);
if (rslt != BME68X_OK) { return; }
// Calculate delay period in microseconds
// del_period = bme68x_get_meas_dur(BME68X_FORCED_MODE, &conf, &bme) + (heatr_conf.heatr_dur * 1000);
// bme.delay_us(del_period, bme.intf_ptr);
bmp_sensors[bmp_idx].bme680_state = 1;
} else {
bmp_sensors[bmp_idx].bme680_state = 0;
struct bme68x_data data;
uint8_t n_fields;
rslt = bme68x_get_data(BME68X_FORCED_MODE, &data, &n_fields, &bme_dev[bmp_idx]);
if (rslt != BME68X_OK) { return; }
#ifdef BME68X_DO_NOT_USE_FPU
bmp_sensors[bmp_idx].bmp_temperature = data.temperature / 100.0f; // Temperature in degree celsius x100
bmp_sensors[bmp_idx].bmp_humidity = data.humidity / 1000.0f; // Humidity in % relative humidity x1000
#else
bmp_sensors[bmp_idx].bmp_temperature = data.temperature; // Temperature in degree celsius
bmp_sensors[bmp_idx].bmp_humidity = data.humidity; // Humidity in % relative humidity
#endif
bmp_sensors[bmp_idx].bmp_pressure = data.pressure / 100.0f; // Pressure in Pascal (converted to hPa)
// Avoid using measurements from an unstable heating setup
if (data.status & BME68X_GASM_VALID_MSK) {
bmp_sensors[bmp_idx].bmp_gas_resistance = data.gas_resistance / 1000.0f; // Gas resistance in Ohms (converted to kOhm)
} else {
bmp_sensors[bmp_idx].bmp_gas_resistance = 0;
}
}
}
return;
}
#endif // USE_BME68X
/********************************************************************************************/
void BmpDetect(void) {
if (!bmp_sensors) {
bmp_sensors = (bmp_sensors_t*)calloc(BMP_MAX_SENSORS, sizeof(bmp_sensors_t));
}
if (!bmp_sensors) { return; }
for (uint32_t i = 0; i < BMP_MAX_SENSORS; i++) {
uint8_t bus = i >>1;
if (!I2cSetDevice(bmp_addresses[i &1], bus)) { continue; }
uint8_t bmp_type = I2cRead8(bmp_addresses[i &1], BMP_REGISTER_CHIPID, bus);
if (bmp_type) {
bmp_sensors[bmp_count].bmp_address = bmp_addresses[i &1];
bmp_sensors[bmp_count].bmp_bus = bus;
bmp_sensors[bmp_count].bmp_type = bmp_type;
bmp_sensors[bmp_count].bmp_model = 0;
bool success = false;
switch (bmp_type) {
case BMP180_CHIPID:
success = Bmp180Calibration(bmp_count);
break;
case BME280_CHIPID:
bmp_sensors[bmp_count].bmp_model++; // 2
case BMP280_CHIPID:
bmp_sensors[bmp_count].bmp_model++; // 1
success = Bmx280Calibrate(bmp_count);
break;
#ifdef USE_BME68X
case BME680_CHIPID:
bmp_sensors[bmp_count].bmp_model = 3; // 3
success = Bme680Init(bmp_count);
break;
#endif // USE_BME68X
}
if (success) {
GetTextIndexed(bmp_sensors[bmp_count].bmp_name, sizeof(bmp_sensors[bmp_count].bmp_name), bmp_sensors[bmp_count].bmp_model, kBmpTypes);
I2cSetActiveFound(bmp_sensors[bmp_count].bmp_address, bmp_sensors[bmp_count].bmp_name, bmp_sensors[bmp_count].bmp_bus);
bmp_count++;
}
}
}
}
void BmpRead(void) {
#ifdef USE_DEEPSLEEP
// Prevent updating measurments once BMP has been put to sleep (just before ESP enters deepsleep)
if (bmp_deepsleep) return;
#endif
for (uint32_t bmp_idx = 0; bmp_idx < bmp_count; bmp_idx++) {
switch (bmp_sensors[bmp_idx].bmp_type) {
case BMP180_CHIPID:
Bmp180Read(bmp_idx);
break;
case BMP280_CHIPID:
case BME280_CHIPID:
Bme280Read(bmp_idx);
break;
#ifdef USE_BME68X
case BME680_CHIPID:
Bme680Read(bmp_idx);
break;
#endif // USE_BME68X
}
}
}
void BmpShow(bool json) {
for (uint32_t bmp_idx = 0; bmp_idx < bmp_count; bmp_idx++) {
if (bmp_sensors[bmp_idx].bmp_type) {
float bmp_sealevel = ConvertPressureForSeaLevel(bmp_sensors[bmp_idx].bmp_pressure);
float bmp_temperature = ConvertTemp(bmp_sensors[bmp_idx].bmp_temperature);
float bmp_pressure = ConvertPressure(bmp_sensors[bmp_idx].bmp_pressure);
char name[16];
// BMP280
strlcpy(name, bmp_sensors[bmp_idx].bmp_name, sizeof(bmp_sensors[bmp_idx].bmp_name));
if (bmp_count > 1) {
// BMP280-77
snprintf_P(name, sizeof(name), PSTR("%s%c%02X"), name, IndexSeparator(), bmp_sensors[bmp_idx].bmp_address);
#ifdef ESP32
if (TasmotaGlobal.i2c_enabled_2) { // Second bus enabled
uint8_t bus = bmp_sensors[0].bmp_bus;
for (uint32_t i = 1; i < bmp_count; i++) {
if (bus != bmp_sensors[i].bmp_bus) { // Different busses
// BMP280-77-1
snprintf_P(name, sizeof(name), PSTR("%s%c%d"), name, IndexSeparator(), bmp_sensors[bmp_idx].bmp_bus +1);
break;
}
}
}
#endif
}
char pressure[33];
dtostrfd(bmp_pressure, Settings->flag2.pressure_resolution, pressure);
char sea_pressure[33];
dtostrfd(bmp_sealevel, Settings->flag2.pressure_resolution, sea_pressure);
float bmp_humidity = ConvertHumidity(bmp_sensors[bmp_idx].bmp_humidity);
char humidity[33];
dtostrfd(bmp_humidity, Settings->flag2.humidity_resolution, humidity);
float f_dewpoint = CalcTempHumToDew(bmp_temperature, bmp_humidity);
char dewpoint[33];
dtostrfd(f_dewpoint, Settings->flag2.temperature_resolution, dewpoint);
#ifdef USE_HEAT_INDEX
float f_heatindex = CalcTemHumToHeatIndex(bmp_temperature, bmp_humidity);
char heatindex[33];
dtostrfd(f_heatindex, Settings->flag2.temperature_resolution, heatindex);
#endif // USE_HEAT_INDEX
#ifdef USE_BME68X
char gas_resistance[33];
dtostrfd(bmp_sensors[bmp_idx].bmp_gas_resistance, 2, gas_resistance);
#endif // USE_BME68X
if (json) {
char json_humidity[100];
#ifdef USE_HEAT_INDEX
snprintf_P(json_humidity, sizeof(json_humidity), PSTR(",\"" D_JSON_HUMIDITY "\":%s,\"" D_JSON_DEWPOINT "\":%s,\"" D_JSON_HEATINDEX "\":%s"), humidity, dewpoint, heatindex);
#else
snprintf_P(json_humidity, sizeof(json_humidity), PSTR(",\"" D_JSON_HUMIDITY "\":%s,\"" D_JSON_DEWPOINT "\":%s"), humidity, dewpoint);
#endif // USE_HEAT_INDEX
char json_sealevel[40];
snprintf_P(json_sealevel, sizeof(json_sealevel), PSTR(",\"" D_JSON_PRESSUREATSEALEVEL "\":%s"), sea_pressure);
#ifdef USE_BME68X
char json_gas[40];
snprintf_P(json_gas, sizeof(json_gas), PSTR(",\"" D_JSON_GAS "\":%s"), gas_resistance);
ResponseAppend_P(PSTR(",\"%s\":{\"" D_JSON_TEMPERATURE "\":%*_f%s,\"" D_JSON_PRESSURE "\":%s%s%s}"),
name,
Settings->flag2.temperature_resolution, &bmp_temperature,
(bmp_sensors[bmp_idx].bmp_model >= 2) ? json_humidity : "",
pressure,
(Settings->altitude != 0) ? json_sealevel : "",
(bmp_sensors[bmp_idx].bmp_model >= 3) ? json_gas : "");
#else
ResponseAppend_P(PSTR(",\"%s\":{\"" D_JSON_TEMPERATURE "\":%*_f%s,\"" D_JSON_PRESSURE "\":%s%s}"),
name, Settings->flag2.temperature_resolution, &bmp_temperature, (bmp_sensors[bmp_idx].bmp_model >= 2) ? json_humidity : "", pressure, (Settings->altitude != 0) ? json_sealevel : "");
#endif // USE_BME68X
#ifdef USE_DOMOTICZ
if ((0 == TasmotaGlobal.tele_period) && (0 == bmp_idx)) { // We want the same first sensor to report to Domoticz in case a read is missed
DomoticzTempHumPressureSensor(bmp_temperature, bmp_humidity, bmp_pressure);
#ifdef USE_BME68X
if (bmp_sensors[bmp_idx].bmp_model >= 3) { DomoticzSensor(DZ_AIRQUALITY, (uint32_t)bmp_sensors[bmp_idx].bmp_gas_resistance); }
#endif // USE_BME68X
}
#endif // USE_DOMOTICZ
#ifdef USE_KNX
if (0 == TasmotaGlobal.tele_period) {
KnxSensor(KNX_TEMPERATURE, bmp_temperature);
KnxSensor(KNX_HUMIDITY, bmp_humidity);
}
#endif // USE_KNX
#ifdef USE_WEBSERVER
} else {
WSContentSend_Temp(name, bmp_temperature);
if (bmp_sensors[bmp_idx].bmp_model >= 2) {
WSContentSend_PD(HTTP_SNS_HUM, name, humidity);
WSContentSend_PD(HTTP_SNS_DEW, name, dewpoint, TempUnit());
#ifdef USE_HEAT_INDEX
WSContentSend_PD(HTTP_SNS_HEATINDEX, name, heatindex, TempUnit());
#endif // USE_HEAT_INDEX
}
WSContentSend_PD(HTTP_SNS_PRESSURE, name, pressure, PressureUnit().c_str());
if (Settings->altitude != 0) {
WSContentSend_PD(HTTP_SNS_SEAPRESSURE, name, sea_pressure, PressureUnit().c_str());
}
#ifdef USE_BME68X
if (bmp_sensors[bmp_idx].bmp_model >= 3) {
WSContentSend_PD(PSTR("{s}%s " D_GAS "{m}%s " D_UNIT_KILOOHM "{e}"), name, gas_resistance);
}
#endif // USE_BME68X
#endif // USE_WEBSERVER
}
}
}
}
#ifdef USE_DEEPSLEEP
void BMP_EnterSleep(void) {
if (DeepSleepEnabled()) {
for (uint32_t bmp_idx = 0; bmp_idx < bmp_count; bmp_idx++) {
switch (bmp_sensors[bmp_idx].bmp_type) {
case BMP180_CHIPID:
case BMP280_CHIPID:
case BME280_CHIPID:
I2cWrite8(bmp_sensors[bmp_idx].bmp_address, BMP_REGISTER_RESET, BMP_CMND_RESET, bmp_sensors[bmp_idx].bmp_bus);
break;
default:
break;
}
}
}
}
#endif // USE_DEEPSLEEP
/*********************************************************************************************\
* Interface
\*********************************************************************************************/
bool Xsns09(uint32_t function) {
if (!I2cEnabled(XI2C_10)) { return false; }
bool result = false;
if (FUNC_INIT == function) {
BmpDetect();
}
else if (bmp_count) {
switch (function) {
case FUNC_EVERY_SECOND:
BmpRead();
break;
case FUNC_JSON_APPEND:
BmpShow(1);
break;
#ifdef USE_WEBSERVER
case FUNC_WEB_SENSOR:
BmpShow(0);
break;
#endif // USE_WEBSERVER
#ifdef USE_DEEPSLEEP
case FUNC_SAVE_BEFORE_RESTART:
BMP_EnterSleep();
bmp_deepsleep = 1;
break;
#endif // USE_DEEPSLEEP
}
}
return result;
}
#endif // USE_BMP
#endif // USE_I2C
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