add code for trinkey enviro gadget

Trinkey_QT2040_Enviro_Gadget/arduino/trinkey_qt2040_enviro/trinkey_qt2040_enviro.ino

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+// SPDX-FileCopyrightText: 2021 Carter Nelson for Adafruit Industries
+//
+// SPDX-License-Identifier: MIT
+
+#include <Adafruit_NeoPixel.h>
+#include <Adafruit_BME280.h>
+#include <SensirionI2CScd4x.h>
+#include <Wire.h>
+
+//--| User Config |-----------------------------------------------
+#define DATA_FORMAT   0         // 0=CSV, 1=JSON
+#define DATA_RATE     5000      // generate new number ever X ms
+#define BEAT_COLOR    0xADAF00  // neopixel heart beat color
+#define BEAT_RATE     1000      // neopixel heart beat rate in ms, 0=none
+//----------------------------------------------------------------
+
+Adafruit_BME280 bme;
+SensirionI2CScd4x scd4x;
+Adafruit_NeoPixel neopixel(1, PIN_NEOPIXEL, NEO_GRB + NEO_KHZ800);
+
+uint16_t CO2, data_ready;
+float scd4x_temp, scd4x_humid;
+float temperature, humidity, pressure;
+int current_time, last_data, last_beat;
+
+void setup() {
+  Serial.begin(115200);
+
+  // init status neopixel
+  neopixel.begin();
+  neopixel.fill(0);
+  neopixel.show();
+
+  // init BME280 first, this calls Wire.begin()
+  if (!bme.begin()) {
+    Serial.println("Failed to initialize BME280.");
+    neoPanic();
+  }
+
+  // init SCD40
+  scd4x.begin(Wire);
+  scd4x.stopPeriodicMeasurement();
+  if (scd4x.startPeriodicMeasurement()) {
+    Serial.println("Failed to start SCD40.");
+    neoPanic();
+  }
+
+  // init time tracking
+  last_data = last_beat = millis();
+}
+
+void loop() {
+  current_time = millis();
+
+  //-----------
+  // Send Data
+  //-----------
+  if (current_time - last_data > DATA_RATE) {
+    temperature = bme.readTemperature();
+    pressure = bme.readPressure() / 100;
+    humidity = bme.readHumidity();
+    scd4x.setAmbientPressure(uint16_t(pressure));
+    scd4x.readMeasurement(CO2, scd4x_temp, scd4x_humid);
+    switch (DATA_FORMAT) {
+      case 0:
+        sendCSV(); break;
+      case 1:
+        sendJSON(); break;
+      default:
+        Serial.print("Unknown data format: "); Serial.println(DATA_FORMAT);
+        neoPanic();
+    }
+    last_data = current_time;
+  }
+
+  //------------
+  // Heart Beat
+  //------------
+  if ((BEAT_RATE) && (current_time - last_beat > BEAT_RATE)) {
+    if (neopixel.getPixelColor(0)) {
+      neopixel.fill(0);
+    } else {
+      neopixel.fill(BEAT_COLOR);
+    }
+    neopixel.show();
+    last_beat = current_time;
+  }
+}
+
+void sendCSV() {
+  Serial.print(CO2); Serial.print(", ");
+  Serial.print(pressure); Serial.print(", ");
+  Serial.print(temperature); Serial.print(", ");
+  Serial.println(humidity);
+}
+
+void sendJSON() {
+  Serial.print("{");
+  Serial.print("\"CO2\" : "); Serial.print(CO2); Serial.print(", ");
+  Serial.print("\"pressure\" : "); Serial.print(pressure); Serial.print(", ");
+  Serial.print("\"temperature\" : "); Serial.print(temperature); Serial.print(", ");
+  Serial.print("\"humidity\" : "); Serial.print(humidity);
+  Serial.println("}");
+}
+
+void neoPanic() {
+  while (1) {
+    neopixel.fill(0xFF0000); neopixel.show(); delay(100);
+    neopixel.fill(0x000000); neopixel.show(); delay(100);
+  }
+}

Trinkey_QT2040_Enviro_Gadget/circuitpython/boot.py

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+import usb_cdc
+usb_cdc.enable(data=True)

Trinkey_QT2040_Enviro_Gadget/circuitpython/enviromon.py

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+# SPDX-FileCopyrightText: 2021 Carter Nelson for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+import time
+import board
+import usb_cdc
+import adafruit_scd4x
+from adafruit_bme280 import basic as adafruit_bme280
+import neopixel
+
+#--| User Config |-----------------------------------
+DATA_FORMAT = "JSON"    # data format, CSV or JSON
+DATA_RATE = 5           # data read rate in secs
+BEAT_COLOR = 0xADAF00   # neopixel heart beat color
+BEAT_RATE = 1           # neopixel heart beat rate in secs, 0=none
+#----------------------------------------------------
+
+# check that USB CDC data has been enabled
+if usb_cdc.data is None:
+    print("Need to enable USB CDC serial data in boot.py.")
+    while True:
+        pass
+
+# setup stuff
+scd = adafruit_scd4x.SCD4X(board.I2C())
+scd.start_periodic_measurement()
+bme = adafruit_bme280.Adafruit_BME280_I2C(board.I2C())
+pixel = neopixel.NeoPixel(board.NEOPIXEL, 1)
+
+# CSV output
+def send_csv_data(data):
+    usb_cdc.data.write("{}, {}, {}, {}\n".format(*data).encode())
+
+# JSON output
+def send_json_data(data):
+    usb_cdc.data.write('{'.encode())
+    usb_cdc.data.write('"CO2" : {},'.format(data[0]).encode())
+    usb_cdc.data.write('"pressure" : {},'.format(data[1]).encode())
+    usb_cdc.data.write('"temperature" : {},'.format(data[2]).encode())
+    usb_cdc.data.write('"humidity" : {}'.format(data[3]).encode())
+    usb_cdc.data.write('}\n'.encode())
+
+# init time tracking
+last_data = last_beat = time.monotonic()
+
+# loop forever!
+while True:
+    current_time = time.monotonic()
+
+    # data
+    if current_time - last_data > DATA_RATE:
+        data = (scd.CO2, bme.pressure, bme.temperature, bme.humidity)
+        usb_cdc.data.reset_output_buffer()
+        if DATA_FORMAT == "CSV":
+            send_csv_data(data)
+        elif DATA_FORMAT == "JSON":
+            send_json_data(data)
+        else:
+            usb_cdc.data.write(b"Unknown data format.\n")
+        last_data = current_time
+
+    # heart beat
+    if BEAT_RATE and current_time - last_beat > BEAT_RATE:
+        if (pixel[0][0]):
+            pixel.fill(0)
+        else:
+            pixel.fill(BEAT_COLOR)
+        last_beat = current_time

Trinkey_QT2040_Enviro_Gadget/python/read_csv.py

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+# SPDX-FileCopyrightText: 2021 Carter Nelson for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+import serial
+
+# open serial port (NOTE: change location as needed)
+ss = serial.Serial("/dev/ttyACM0")
+
+# read string
+_ = ss.readline() # first read may be incomplete, just toss it
+raw_string = ss.readline().strip().decode()
+
+# create list of floats
+data = [float(x) for x in raw_string.split(',')]
+
+# print them
+print("CO2 =", data[0])
+print("pressure =", data[1])
+print("temperature =", data[2])
+print("humidity =", data[3])

Trinkey_QT2040_Enviro_Gadget/python/read_json.py

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+# SPDX-FileCopyrightText: 2021 Carter Nelson for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+import json
+import serial
+
+# open serial port (NOTE: change location as needed)
+ss = serial.Serial("/dev/ttyACM0")
+
+# read string
+_ = ss.readline() # first read may be incomplete, just toss it
+raw_string = ss.readline().strip().decode()
+
+# load JSON
+data = json.loads(raw_string)
+
+# print data
+print("CO2 =", data['CO2'])
+print("pressure =", data['pressure'])
+print("temperature =", data['temperature'])
+print("humidity =", data['humidity'])

Trinkey_QT2040_Enviro_Gadget/u2if/enviro_u2if.py

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+# SPDX-FileCopyrightText: 2021 Carter Nelson for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+import time
+import board
+import adafruit_scd4x
+from adafruit_bme280 import basic as adafruit_bme280
+
+scd = adafruit_scd4x.SCD4X(board.I2C())
+scd.start_periodic_measurement()
+
+bme = adafruit_bme280.Adafruit_BME280_I2C(board.I2C())
+
+while True:
+    time.sleep(5)
+    print("CO2 =", scd.CO2)
+    print("Pressure = {:.1f} hPa".format(bme.pressure))
+    print("Temperature = {:.1f} degC".format(bme.temperature))
+    print("Humidity = {:.1f}%".format(bme.humidity))