SGP30 (Gas Sensor)

[Gadgetoid]

• [x] CPython Library - https://github.com/pimoroni/sgp30-python
• [ ] CircuitPython Library - https://github.com/adafruit/Adafruit_CircuitPython_SGP30 (untested)
• [ ] Pico
  • [x] Pico SDK C++ Library
  • [x] MicroPython Bindings
  • [x] Examples
  • [ ] Documentation
  • [ ] Pi
  • [x] In breakouts.config - https://github.com/pimoroni/breakout-garden/blob/master/breakouts.config

[Gadgetoid]

A C++ library has been kindly contributed by Simon, needs reviewing & testing before handoff to Python bindings - https://github.com/pimoroni/pimoroni-pico/pull/93

Edit: Update: Merged!

[Gadgetoid]

I've tested and verified that the SGP30 contrib library outputs some readings. They differ when I breathe on it, and getting it set up and working with Pico Explorer was as simple as changing the pins supplied to the constructor:

diff --git a/examples/breakout_sgp30/demo.cpp b/examples/breakout_sgp30/demo.cpp
index 41ce235..574e051 100644
--- a/examples/breakout_sgp30/demo.cpp
+++ b/examples/breakout_sgp30/demo.cpp
@@ -8,14 +8,21 @@
 #include <stdio.h>
 #include <string.h>
 #include "pico/stdlib.h"
+#include "hardware/i2c.h"

 #include "breakout_sgp30.hpp"

 using namespace pimoroni;

-BreakoutSGP30 sgp30;
+#define I2C_BUS i2c0
+#define I2C_SDA 20
+#define I2C_SCL 21
+
+BreakoutSGP30 sgp30(i2c0, 20, 21);

 int main() {
+  setup_default_uart();
+
   uint8_t prd;
   uint16_t eCO2, TVOC;
   uint16_t raweCO2, rawTVOC;

This does raise the question- how should we go about indicating the difference between Breakout Garden and Pico Explorer i2c pins in examples? I've definitely tripped up more than once due to this.

[Gadgetoid]

C++ and MicroPython support merged: https://github.com/pimoroni/pimoroni-pico/pull/136

[Gadgetoid]

Released in https://github.com/pimoroni/pimoroni-pico/releases/tag/v0.1.5