Merge pull request #103 from AmedeeBulle/master

H4/H5 are 12 bits signed integers
finitespace · Feb 26, 2021 · 7b9ce6b · 7b9ce6b
2 parents 37a020c + d11e495
commit 7b9ce6b
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/BME280.cpp b/src/BME280.cpp
@@ -274,8 +274,8 @@ float BME280::CalculateHumidity
  uint8_t dig_H1 = m_dig[24];
  int16_t dig_H2 = (m_dig[26] << 8) | m_dig[25];
  uint8_t dig_H3 = m_dig[27];
- int16_t dig_H4 = (m_dig[28] << 4) | (0x0F & m_dig[29]);
- int16_t dig_H5 = (m_dig[30] << 4) | ((m_dig[29] >> 4) & 0x0F);
+ int16_t dig_H4 = ((int8_t)m_dig[28] * 16) | (0x0F & m_dig[29]);
+ int16_t dig_H5 = ((int8_t)m_dig[30] * 16) | ((m_dig[29] >> 4) & 0x0F);
  int8_t dig_H6 = m_dig[31];
 
  var1 = (t_fine - ((int32_t)76800));