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fix hang due to powerdown of hts221 sensor #6

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Merged
merged 1 commit into from
Aug 28, 2019
Merged

fix hang due to powerdown of hts221 sensor #6

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10 changes: 8 additions & 2 deletions src/MKRENV.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -86,8 +86,8 @@ int ENVClass::begin()

readHTS221Calibration();

// enable HTS221
i2cWrite(HTS221_ADDRESS, HTS221_CTRL1_REG, 0x80);
// turn on the HTS221 and enable Block Data Update
i2cWrite(HTS221_ADDRESS, HTS221_CTRL1_REG, 0x84);

// configure VEML6075 for 100 ms
i2cWriteWord(VEML6075_ADDRESS, VEML6075_UV_CONF_REG, 0x0010);
Expand All @@ -111,6 +111,9 @@ void ENVClass::end()

float ENVClass::readTemperature(int units)
{
// Wait for ONE_SHOT bit to be cleared by the hardware
while (i2cRead(HTS221_ADDRESS, HTS221_CTRL2_REG) & 0x01);

// trigger one shot
i2cWrite(HTS221_ADDRESS, HTS221_CTRL2_REG, 0x01);

Expand All @@ -131,6 +134,9 @@ float ENVClass::readTemperature(int units)

float ENVClass::readHumidity()
{
//Wait for ONE_SHOT bit to be cleared by the hardware
while (i2cRead(HTS221_ADDRESS, HTS221_CTRL2_REG) & 0x01);

// trigger one shot
i2cWrite(HTS221_ADDRESS, HTS221_CTRL2_REG, 0x01);

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