sciosense/ens160_driver

Driver for the ScioSense ENS160 digital gas sensor

ens160_driver's Issues

Aqi500?

There is a function to retrieve AQI500, but I'm at a loss as to what it refers to, and the old datasheet I have doesn't mention it.

The code indicates it's only for hardware revisions greater than zero: https://github.com/sciosense/ENS160_driver/blob/master/src/ScioSense_ENS160.cpp#L290

Can the code be documented, and the latest datasheet supplied?
This was my reference:
https://www.sciosense.com/wp-content/uploads/documents/SC-001224-DS-9-ENS160-Datasheet.pdf

Understanding raw resistance

Running ens160basic_std always prints R HP1 equal to 1 Ohm. Is my instance faulty or is it a common issue?

ENS160:: requires instantiator that uses predefined Wire() connection

When using the device in a system that has I2C wire previously defined; then an instantiator [ begin() ] that uses that existing definition instead of trying to define its own wire port.

The use case: I have 'SmartCitizen' SAMD21G system that has two I2C channels defined; one of which has I2C Mux (TCA9458A) connected; and the ENS160 + ENS210 are connected to one channel.
The operation mode calls for switching one the appropriate Mux Channel before communicating with the ENS devices.
It is simply unnecessary for the ENS160 library to carry on making its own wire definition. I do not want to have to support that.
Its not the business of the library that supports VOC measurement to manage I2C.

Therefore my request is to add support for the predefined Wire such as begin( uint8_t deviceAddress, TwoWire *Wire).

I will add such function to my copy of the library; but would like you to add it to the master.

why offset measured values?

in the example code ens160_dev_shield.ino, why is there an offset of 500 for the tVOC readings and 400 for the eCO2?

if (new_TVOC < 500) new_TVOC = 0; 
  else if (new_TVOC > 5000) new_TVOC = 5000;
  else new_TVOC = new_TVOC - 500;

  new_eCO2 = (uint16_t)ens160.geteCO2();
  if (new_eCO2 < 400) new_eCO2 = 400;
  else if (new_eCO2 > 5000) new_eCO2 = 5000;

Driver for circuitpython / micropython

Hi all,
is there any implementation of the ENS160 driver for circuitpython/ micropython planned?

Thanks in advance!

Sensor Outputs 0 in OPMODE"Normal operation"

I'm using a micropython library, the ens160 outputs good data when first powered up but after the initial start-up the when the VALIDITY FLAG goes to 0, which meas normal operation it just outputs 0 for all data.

Driver didn't work with latest changes

I downloaded the library files to work with a ScioSense devkit, containing ENS160+ENS210.
The lib had a bunch of compile errors, so I reversed some of the recent changed to the ScioSense_ENS160.cpp file, and now it works:

---

149  - result = this->write8(_slaveaddr, ENS160_REG_COMMAND, ENS160_COMMAND_GETVER);
149 + result = this->write8(_slaveaddr, ENS160_REG_COMMAND, ENS160_COMMAND_GET_APPVER);

251  - bool ScioSense_ENS160::measure()
251 + bool ScioSense_ENS160::measure(bool waitForNew) 

275  - this->read(_slaveaddr, ENS160_REG_DATA_IAQ, i2cbuf, 7);
275 + this->read(_slaveaddr, ENS160_REG_DATA_AQI, i2cbuf, 7);

---

I do not wish to commit this code, because I'm new to the code, so I not confident that I havn't fucked something up somewhere else... But like this, the library works for me.