sensor

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jx-co2-101-sensor

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Sensor code

树莓派 Raspberry model 3B+ 和 JX-CO2-101 传感器. 更多文档

package main

import (
	"log"
	"time"

	. "github.com/abserari/jx-co2-101-sensor"
	"github.com/tarm/serial"
)

// pi3 should open uart and communicate with device: /dev/ttyAMA0 | /dev/serial0
func main() {
	c := &serial.Config{Name: "/dev/ttyAMA0", Baud: 9600, ReadTimeout: time.Second * 5}
	s, err := serial.OpenPort(c)
	if err != nil {
		log.Fatal(err)
	}

	sensor := NewCO2Sensor(s)
	sensor.SendActiveModeChange()

	// go func() {
	// 	for {
	// 		sensor.SendQuery()
	// 		time.Sleep(3 * time.Second)
	// 	}
	// }()
	for {
		data, _, err := sensor.ReadLine()
		if err != nil {
			LogError(err)
		}
		value, err := ReadData(data)
		LogInfo(value)
	}

}

Documentation

Index

• Variables
• func CRC(b []byte, check []byte) bool
• func LogDebug(v ...interface{})
• func LogError(v ...interface{})
• func LogInfo(v ...interface{})
• func ReadData(raw []byte) (int, error)
• type CO2Sensor
  • func NewCO2Sensor(s *serial.Port) *CO2Sensor
  • func (s *CO2Sensor) SendActiveModeChange() error
  • func (s *CO2Sensor) SendCorrect() error
  • func (s *CO2Sensor) SendMODBUS_RTU() error
  • func (s *CO2Sensor) SendQuery() (int, error)
  • func (s *CO2Sensor) SendQueryModeChange() error
• type LogMode

Variables

var ActiveModeChange = []byte{0xff, 0x05, 0x03, 0x01, 0x00, 0x00, 0x00, 0x00, 0xf8}

var Correct = []byte{0xff, 0x05, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8}

var Logmode = DebugLog

var MODBUS_RTU = []byte{0x05, 0x03, 0x00, 0x05, 0x00, 0x01, 0x94, 0x07}

var QueryModeChange = []byte{0xff, 0x05, 0x03, 0x02, 0x00, 0x00, 0x00, 0x00, 0xf7}

var QueryPPM = []byte{0xff, 0x05, 0x03, 0x03, 0x01, 0x00, 0x00, 0x00, 0xf5}

Functions

func CRC

func CRC(b []byte, check []byte) bool

CRC not implement from: https://github.com/sigurn/crc8

func LogDebug

func LogDebug(v ...interface{})

func LogError

func LogError(v ...interface{})

func LogInfo

func LogInfo(v ...interface{})

func ReadData

func ReadData(raw []byte) (int, error)

Types

type CO2Sensor

type CO2Sensor struct {
	*serial.Port
	*bufio.Reader
}

func NewCO2Sensor

func NewCO2Sensor(s *serial.Port) *CO2Sensor

func (*CO2Sensor) SendActiveModeChange

func (s *CO2Sensor) SendActiveModeChange() error

func (*CO2Sensor) SendCorrect

func (s *CO2Sensor) SendCorrect() error

func (*CO2Sensor) SendMODBUS_RTU

func (s *CO2Sensor) SendMODBUS_RTU() error

func (*CO2Sensor) SendQuery

func (s *CO2Sensor) SendQuery() (int, error)

func (*CO2Sensor) SendQueryModeChange

func (s *CO2Sensor) SendQueryModeChange() error

type LogMode

type LogMode int

const DebugLog LogMode = 0

const ErrLog LogMode = 2

const InfoLog LogMode = 1