Speeding up readings of MULTIPLE SHT1x or SHT7x sensors

Using Arduino Programming Questions
6

A quick look at the lib dc42 pointed to.

there is a line that states : waitForResultSHT(_dataPin);

That is just a blocking wait call, you need to get rid off, so lets hack a bit

add these commands to the library: cannot test as I have no such sensor
You might do the same trick for humidity.

do not forget to add the protos in the .h file too

void SHT1x::requestTemp()
{
  // Command to send to the SHT1x to request Temperature
  int _gTempCmd  = 0b00000011;
  sendCommandSHT(_gTempCmd, _dataPin, _clockPin);
}

bool SHT1x::dataReady()
{
  pinMode(_dataPin, INPUT);
  return digitalRead(_dataPin) == LOW;
}

float SHT1x::asyncReadTempC()
{
  const float D1 = -40.0;  // for 14 Bit @ 5V
  const float D2 =   0.01; // for 14 Bit DEGC
  
  int _val = getData16SHT(_dataPin, _clockPin);
  skipCrcSHT(_dataPin, _clockPin);

  return (_val * D2) + D1;
}

void setup()
{
  ...
  SHT.requestTemp();
}

void loop()
{
  do some here
  
  if (SHT.dataReady())
  {
    temp = SHT.asyncReadTempC();
	SHT.requestTemp();
  }
  
  do the rest here
}

as said not tested, so please post the lib if you got it working.

and please change this in the lib, makes it more maintainable...

float SHT1x::readTemperatureF()
{
  return readTemperatureC() * 1.8 + 32;
}

Lets post a mail to jon.oxer (maintainer of the lib)

update - mailed jon - time for a cold beer :wink: