mirror of
https://github.com/tinygo-org/drivers.git
synced 2026-07-26 10:38:41 +00:00
Patricio Whittingslow
42 lines
826 B
Go
42 lines
826 B
Go
package main
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import (
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"machine"
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"time"
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"tinygo.org/x/drivers"
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"tinygo.org/x/drivers/ndir"
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)
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var (
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ndirBus = machine.I2C0
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)
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func main() {
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err := ndirBus.Configure(machine.I2CConfig{
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Frequency: 100_000,
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})
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if err != nil {
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panic("i2c config fail:" + err.Error())
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}
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// Set the address based on how the resistors are soldered.
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// True means the left and middle pads are joined.
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ndirAddr := ndir.Addr(true, false)
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dev := ndir.NewDevI2C(ndirBus, ndirAddr)
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err = dev.Init()
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if err != nil {
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panic("ndir init fail:" + err.Error())
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}
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// Datasheet tells us to wait 12 seconds before reading from the sensor.
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time.Sleep(12 * time.Second)
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for {
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time.Sleep(time.Second)
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err := dev.Update(drivers.AllMeasurements)
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if err != nil {
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println(err.Error())
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continue
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}
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println("PPM:", dev.PPMCO2())
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}
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}
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