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[multiple] Fix wrong behavior in sensor calculations and drivers (#14644)

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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
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Jonathan Swoboda
2026-03-09 18:00:17 -04:00
committed by GitHub
co-authored by Claude Opus 4.6
parent 308e8e78cd
commit b3fc43c13c
6 changed files with 16 additions and 12 deletions
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esphome/components/bme280_base/bme280_base.cpp
+5 -2
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@@ -147,8 +147,11 @@ void BME280Component::setup() {
this->calibration_.h1 = read_u8_(BME280_REGISTER_DIG_H1);
this->calibration_.h2 = read_s16_le_(BME280_REGISTER_DIG_H2);
this->calibration_.h3 = read_u8_(BME280_REGISTER_DIG_H3);
this->calibration_.h4 = read_u8_(BME280_REGISTER_DIG_H4) << 4 | (read_u8_(BME280_REGISTER_DIG_H4 + 1) & 0x0F);
this->calibration_.h5 = read_u8_(BME280_REGISTER_DIG_H5 + 1) << 4 | (read_u8_(BME280_REGISTER_DIG_H5) >> 4);
// h4 and h5 are signed 12-bit values; shift left then arithmetic right shift to sign-extend
int16_t h4_raw = read_u8_(BME280_REGISTER_DIG_H4) << 4 | (read_u8_(BME280_REGISTER_DIG_H4 + 1) & 0x0F);
this->calibration_.h4 = static_cast<int16_t>(h4_raw << 4) >> 4;
int16_t h5_raw = read_u8_(BME280_REGISTER_DIG_H5 + 1) << 4 | (read_u8_(BME280_REGISTER_DIG_H5) >> 4);
this->calibration_.h5 = static_cast<int16_t>(h5_raw << 4) >> 4;
this->calibration_.h6 = read_u8_(BME280_REGISTER_DIG_H6);
uint8_t humid_control_val = 0;