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esp32_Adafruit_BME280_Library
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Check register values for no sampling

This commit is contained in:
tyeth 2025-04-30 13:44:05 +01:00
parent 5b119e24f6
commit 88903ef84e
1 changed files with 6 additions and 7 deletions
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13
Adafruit_BME280.cpp
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@ -338,10 +338,10 @@ bool Adafruit_BME280::isReadingCalibration(void) {
*/
float Adafruit_BME280::readTemperature(void) {
int32_t var1, var2;
if (_measReg.osrs_t == sensor_sampling::SAMPLING_NONE)
return NAN;
int32_t adc_T = read24(BME280_REGISTER_TEMPDATA);
if (adc_T == 0x800000) // value in case temp measurement was disabled
return NAN;
adc_T >>= 4;
var1 = (int32_t)((adc_T / 8) - ((int32_t)_bme280_calib.dig_T1 * 2));
@ -362,12 +362,12 @@ float Adafruit_BME280::readTemperature(void) {
*/
float Adafruit_BME280::readPressure(void) {
int64_t var1, var2, var3, var4;
if (_measReg.osrs_p == sensor_sampling::SAMPLING_NONE)
return NAN;
readTemperature(); // must be done first to get t_fine
int32_t adc_P = read24(BME280_REGISTER_PRESSUREDATA);
if (adc_P == 0x800000) // value in case pressure measurement was disabled
return NAN;
adc_P >>= 4;
var1 = ((int64_t)t_fine) - 128000;
@ -401,13 +401,12 @@ float Adafruit_BME280::readPressure(void) {
*/
float Adafruit_BME280::readHumidity(void) {
int32_t var1, var2, var3, var4, var5;
if (_humReg.osrs_h == sensor_sampling::SAMPLING_NONE)
return NAN;
readTemperature(); // must be done first to get t_fine
int32_t adc_H = read16(BME280_REGISTER_HUMIDDATA);
if (adc_H == 0x8000) // value in case humidity measurement was disabled
return NAN;
var1 = t_fine - ((int32_t)76800);
var2 = (int32_t)(adc_H * 16384);
var3 = (int32_t)(((int32_t)_bme280_calib.dig_H4) * 1048576);