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Ayke van Laethem
92050d90da
Tested with a rp2040. TODO: add the ability to set the absolute humidity for more accurate sensor details. The formula for that is rather complex, so I've left this as a future addition.
54 lines
1.0 KiB
Go
54 lines
1.0 KiB
Go
package main
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// Example for the SGP30 to be used on a Raspberry Pi pico.
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// Connect the sensor I2C pins to GP26 and GP27 to test.
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import (
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"machine"
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"time"
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"tinygo.org/x/drivers/sgp30"
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)
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func main() {
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time.Sleep(time.Second)
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println("start")
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// Configure the I2C bus.
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bus := machine.I2C1
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err := bus.Configure(machine.I2CConfig{
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SDA: machine.GP26,
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SCL: machine.GP27,
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Frequency: 400 * machine.KHz,
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})
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if err != nil {
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println("could not configure I2C:", bus)
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return
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}
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// Configure the sensor.
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sensor := sgp30.New(bus)
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if !sensor.Connected() {
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println("sensor not connected")
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return
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}
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err = sensor.Configure(sgp30.Config{})
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if err != nil {
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println("sensor could not be configured:", err.Error())
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return
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}
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// Measure every second, as recommended by the datasheet.
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for {
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time.Sleep(time.Second)
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err := sensor.Update(0)
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if err != nil {
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println("could not read sensor:", err.Error())
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continue
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}
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println("CO₂ equivalent:", sensor.CO2())
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println("TVOC ", sensor.TVOC())
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}
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}
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