new: Support devices on the Enviro pHAT

[maxekman]

The Enviro pHAT is an affordable set of sensors for environment sensing. This issue is a public todo for me when implementing the drivers for it

Devices on the HAT:

• [x] BMP280, temperature/pressure sensor
• [ ] TCS3472, light and RGB colour sensor
• [ ] LSM303D, accelerometer/magnetometer sensor
• [x] ADS1015, 4-channel 5v tolerant 12-bit ADC
• [ ] Two GPIO controlled LEDs for illumination of the light sensor, not really a device

Manufacturer: https://shop.pimoroni.com/products/enviro-phat Device info: https://pinout.xyz/pinout/enviro_phat

[maruel]

I found it on Adafruit but it's out of stock. Pimoroni has even more reasonable shipping rates to Canada than Adafruit so I may order from there.

For now add it to experimental/ and once you have a smoke test and good unit test coverage, we can move it back into the official tree.

[maxekman]

That sounds good. I'm in Europe (Sweden) making it fairly easy to get here. Maybe also ordering a a Zero W to put it on is a good idea?

I'll add the device drivers one by one to experimental. Do you want the smoke tests to be per device or for the whole HAT?

[maruel]

I prefer per device smoketest, as it's more reusable.

[maxekman]

Got it.

[UnAfraid]

We may scratch BMP280 of the list since https://github.com/google/periph/commit/252733acf606c513fa14dcff77a61fe0051b67d6

[maxekman]

I'll leave it checked in the list as that device is still on the Enviro pHAT.

[bezineb5]

PR #304 implemented ADS1015, so you can check it.

[NeuralSpaz]

I have a discrete TCS3472 and am willing to contribute device driver.

[maruel]

Ported to https://github.com/periph/devices/issues/61.