/
main.go
136 lines (119 loc) · 3.03 KB
/
main.go
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package main
import (
"fmt"
"log"
"os"
"os/signal"
"syscall"
"time"
"github.com/allefr/go-sensors/env"
"github.com/allefr/go-sensors/env/hihxxxx_021"
"github.com/allefr/go-sensors/env/mcp9808"
"github.com/allefr/go-sensors/env/shtc3"
"periph.io/x/periph/conn/i2c"
"periph.io/x/periph/conn/i2c/i2creg"
"periph.io/x/periph/host"
)
const interval = 5 // [sec]
const (
thermalTestDevice = false
thermalTestChamber = true
)
func main() {
// Make sure periph is initialized.
if _, err := host.Init(); err != nil {
log.Fatal(err)
}
// open i2c bus
bus, err := i2creg.Open("/dev/i2c-1")
if err != nil {
log.Fatalf("failed to open I2C: %v", err)
}
defer bus.Close()
setupCloseHandler(bus)
var t1, t2, t3, t4 env.TempDriver
var h1, h2 env.HumDriver
if thermalTestDevice {
// mcp9808
t1, err = mcp9808.New(mcp9808.Params{Bus: bus, Addr: 0x18, Name: "bread-board"})
if err != nil {
log.Fatalf("%s: %v\n", t1.String(), err)
}
t2, err = mcp9808.New(mcp9808.Params{Bus: bus, Addr: 0x19, Name: "back-bone-plate"})
if err != nil {
log.Fatalf("%s: %v\n", t2.String(), err)
}
t3, err = mcp9808.New(mcp9808.Params{Bus: bus, Addr: 0x1b, Name: "beacon"})
if err != nil {
log.Fatalf("%s: %v\n", t3.String(), err)
}
t4, err = mcp9808.New(mcp9808.Params{Bus: bus, Addr: 0x1e, Name: "I/O-chamber"})
if err != nil {
log.Fatalf("%s: %v\n", t4.String(), err)
}
// hih6030
h1, err = hihxxxx_021.New(hihxxxx_021.Params{Bus: bus, Name: "EDFA-back"})
if err != nil {
log.Fatalf("%s: %v\n", h1.String(), err)
}
}
if thermalTestChamber {
// shtc3
h2, err = shtc3.New(shtc3.Params{Bus: bus, Name: "chamber"})
if err != nil {
log.Fatalf("%s: %v\n", h2.String(), err)
}
}
var tStart time.Time
// start infinite loop to query data
for {
tStart = time.Now()
if thermalTestDevice {
if str, err := t1.StringJSON(); err != nil {
// fmt.Printf("%s: %v\n", t1.String(), err)
} else {
fmt.Println(str)
}
if str, err := t2.StringJSON(); err != nil {
// fmt.Printf("%s: %v\n", t2.String(), err)
} else {
fmt.Println(str)
}
if str, err := t3.StringJSON(); err != nil {
// fmt.Printf("%s: %v\n", t3.String(), err)
} else {
fmt.Println(str)
}
if str, err := t4.StringJSON(); err != nil {
// fmt.Printf("%s: %v\n", t4.String(), err)
} else {
fmt.Println(str)
}
if str, err := h1.StringJSON(); err != nil {
// fmt.Printf("%s: %v\n", h1.String(), err)
} else {
fmt.Println(str)
}
}
if thermalTestChamber {
if str, err := h2.StringJSON(); err != nil {
fmt.Printf("%s: %v\n", h2.String(), err)
} else {
fmt.Println(str)
}
}
// repeat exactly every interval sec
time.Sleep(interval*time.Second - time.Since(tStart))
}
}
// make sure i2c bus gets closed even if system stops application
func setupCloseHandler(bus i2c.BusCloser) {
c := make(chan os.Signal)
signal.Notify(c, os.Interrupt, syscall.SIGTERM)
go func(b i2c.BusCloser) {
<-c
fmt.Println("\r- Ctrl+C pressed in Terminal")
b.Close()
os.Exit(0)
}(bus)
}