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package main
import (
"context"
"fmt"
"time"
lg "log"
i2c "github.com/d2r2/go-i2c"
//logger "github.com/d2r2/go-logger"
sht3x "github.com/d2r2/go-sht3x"
)
//var lg = logger.NewPackageLogger("main",
// logger.DebugLevel,
// logger.InfoLevel,
//)
func main() {
//defer logger.FinalizeLogger()
// Create new connection to i2c-bus on 0 line with address 0x44.
// Use i2cdetect utility to find device address over the i2c-bus
i2c, err := i2c.NewI2C(0x44, 0)
if err != nil {
lg.Fatal(err)
}
defer i2c.Close()
//lg.Notify("**********************************************************************************************")
//lg.Notify("*** !!! READ THIS !!!")
//lg.Notify("*** You can change verbosity of output, by modifying logging level of modules \"i2c\", \"sht3x\".")
//lg.Notify("*** Uncomment/comment corresponding lines with call to ChangePackageLogLevel(...)")
//lg.Notify("*** !!! READ THIS !!!")
//lg.Notify("**********************************************************************************************")
// Uncomment/comment next line to suppress/increase verbosity of output
// logger.ChangePackageLogLevel("i2c", logger.InfoLevel)
// logger.ChangePackageLogLevel("sht3x", logger.InfoLevel)
sensor := sht3x.NewSHT3X()
// Clear sensor settings
err = sensor.Reset(i2c)
if err != nil {
lg.Fatal(err)
}
fmt.Printf("**********************************************************************************************")
fmt.Printf("*** Read sensor states")
fmt.Printf("**********************************************************************************************")
hs, err := sensor.GetHeaterStatus(i2c)
if err != nil {
lg.Fatal(err)
}
fmt.Printf("Heater ON status = %v", hs)
aps, err := sensor.GetAlertPendingStatus(i2c)
if err != nil {
lg.Fatal(err)
}
fmt.Printf("Alert pending status = %v", aps)
tas, err := sensor.GetTemperatureAlertStatus(i2c)
if err != nil {
lg.Fatal(err)
}
fmt.Printf("Temperature alert pending status = %v", tas)
has, err := sensor.GetHumidityAlertStatus(i2c)
if err != nil {
lg.Fatal(err)
}
fmt.Printf("Humidity alert pending status = %v", has)
rsd, err := sensor.CheckResetDetected(i2c)
if err != nil {
lg.Fatal(err)
}
fmt.Printf("Reset status detected = %v", rsd)
fmt.Printf("**********************************************************************************************")
fmt.Printf("*** Single shot measurement mode")
fmt.Printf("**********************************************************************************************")
ut, urh, err := sensor.ReadUncompTemperatureAndHumidity(i2c, sht3x.RepeatabilityMedium)
if err != nil {
lg.Fatal(err)
}
fmt.Printf("Temperature and RH uncompensated = %v, %v", ut, urh)
temp, rh, err := sensor.ReadTemperatureAndRelativeHumidity(i2c, sht3x.RepeatabilityLow)
if err != nil {
lg.Fatal(err)
}
fmt.Printf("Temperature and relative humidity = %v*C, %v%%", temp, rh)
fmt.Printf("**********************************************************************************************")
fmt.Printf("*** Periodic data acquisition mode ")
fmt.Printf("**********************************************************************************************")
err = sensor.StartPeriodicTemperatureAndHumidityMeasure(i2c, sht3x.Periodic4MPS, sht3x.RepeatabilityLow)
if err != nil {
lg.Fatal(err)
}
for i := 0; i < 5; i++ {
temp, rh, err := sensor.FetchTemperatureAndRelativeHumidity(i2c)
if err != nil {
lg.Fatal(err)
}
fmt.Printf("Temperature and relative humidity = %v*C, %v%%", temp, rh)
}
err = sensor.Break(i2c)
if err != nil {
lg.Fatal(err)
}
fmt.Printf("**********************************************************************************************")
fmt.Printf("*** Get temperature and humidity alert limits")
fmt.Printf("**********************************************************************************************")
temp, rh, err = sensor.ReadAlertHighSet(i2c)
if err != nil {
lg.Fatal(err)
}
fmt.Printf("Read alert HIGH SET limit for temperature and relative humidity = %v*C, %v%%", temp, rh)
temp, rh, err = sensor.ReadAlertHighClear(i2c)
if err != nil {
lg.Fatal(err)
}
fmt.Printf("Read alert HIGH CLEAR limit for temperature and relative humidity = %v*C, %v%%", temp, rh)
temp, rh, err = sensor.ReadAlertLowClear(i2c)
if err != nil {
lg.Fatal(err)
}
fmt.Printf("Read alert LOW CLEAR limit for temperature and relative humidity = %v*C, %v%%", temp, rh)
temp, rh, err = sensor.ReadAlertLowSet(i2c)
if err != nil {
lg.Fatal(err)
}
fmt.Printf("Read alert LOW SET limit for temperature and relative humidity = %v*C, %v%%", temp, rh)
fmt.Printf("**********************************************************************************************")
fmt.Printf("*** Set temperature and humidity alert limits.")
fmt.Printf("*** Equation must be respected: HIGH SET > HIGH CLEAR > LOW CLEAR > LOW SET")
fmt.Printf("**********************************************************************************************")
err = sensor.WriteAlertHighSet(i2c, 110, 90)
if err != nil {
lg.Fatal(err)
}
err = sensor.WriteAlertHighClear(i2c, 108, 88)
if err != nil {
lg.Fatal(err)
}
err = sensor.WriteAlertLowClear(i2c, -18, 10)
if err != nil {
lg.Fatal(err)
}
err = sensor.WriteAlertLowSet(i2c, -20, 8)
if err != nil {
lg.Fatal(err)
}
temp, rh, err = sensor.ReadAlertHighSet(i2c)
if err != nil {
lg.Fatal(err)
}
fmt.Printf("Read alert HIGH SET limit for temperature and relative humidity = %v*C, %v%%", temp, rh)
temp, rh, err = sensor.ReadAlertHighClear(i2c)
if err != nil {
lg.Fatal(err)
}
fmt.Printf("Read alert HIGH CLEAR limit for temperature and relative humidity = %v*C, %v%%", temp, rh)
temp, rh, err = sensor.ReadAlertLowClear(i2c)
if err != nil {
lg.Fatal(err)
}
fmt.Printf("Read alert LOW CLEAR limit for temperature and relative humidity = %v*C, %v%%", temp, rh)
temp, rh, err = sensor.ReadAlertLowSet(i2c)
if err != nil {
lg.Fatal(err)
}
fmt.Printf("Read alert LOW SET limit for temperature and relative humidity = %v*C, %v%%", temp, rh)
fmt.Printf("**********************************************************************************************")
fmt.Printf("*** Activate heater for 10 secs and make a measurement ")
fmt.Printf("**********************************************************************************************")
// create context with cancellation possibility
ctx, cancel := context.WithCancel(context.Background())
// use done channel as a trigger to exit from signal waiting goroutine
done := make(chan struct{})
defer close(done)
// run goroutine waiting for OS termination events, including keyboard Ctrl+C
sht3x.CloseContextOnSignals(cancel, done)
err = sensor.SetHeaterStatus(i2c, true)
if err != nil {
lg.Fatal(err)
}
hs, err = sensor.GetHeaterStatus(i2c)
if err != nil {
lg.Fatal(err)
}
fmt.Printf("Heater ON status = %v", hs)
pause := time.Second * 10
fmt.Printf("Waiting %v...", pause)
select {
// Check for termination request.
case <-ctx.Done():
err = sensor.SetHeaterStatus(i2c, false)
if err != nil {
lg.Fatal(err)
}
lg.Fatal(ctx.Err())
// Sleep 10 sec.
case <-time.After(pause):
}
err = sensor.SetHeaterStatus(i2c, false)
if err != nil {
lg.Fatal(err)
}
hs, err = sensor.GetHeaterStatus(i2c)
if err != nil {
lg.Fatal(err)
}
fmt.Printf("Heater ON status = %v", hs)
temp, rh, err = sensor.ReadTemperatureAndRelativeHumidity(i2c, sht3x.RepeatabilityLow)
if err != nil {
lg.Fatal(err)
}
fmt.Printf("Temperature and relative humidity = %v*C, %v%%", temp, rh)
}
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