fix: temperature, sensor

changes:
- sensor temperature add
- sensor temperature list
- sensor temperature rm
- temperature get
- temperature log
- temperature push
This commit is contained in:
Markus Pesch 2018-11-20 22:55:06 +01:00
parent dd7ea3156e
commit 6d9368e86c
Signed by: volker.raschek
GPG Key ID: 852BCC170D81A982
25 changed files with 850 additions and 48 deletions

13
Gopkg.lock generated
View File

@ -3,11 +3,11 @@
[[projects]]
branch = "master"
digest = "1:67bdb81292d46305e49b2c67585e9d4fbf6832aa86be02e27081fb3c171d6cdb"
digest = "1:fc0785e9dcf11c34eba33d5b308e5cdc47ef03a5fea6bb9e6bc55f9cbcaa70a6"
name = "git.cryptic.systems/fh-trier/go-flucky-server"
packages = ["pkg/types"]
pruneopts = "UT"
revision = "71ed96f2661f290526cb151fd02a2c561452d6ae"
revision = "6ee773aeec13f439a8d963bf37d67999cbfcd85c"
[[projects]]
digest = "1:870d441fe217b8e689d7949fef6e43efbc787e50f200cb1e70dbca9204a1d6be"
@ -41,6 +41,14 @@
revision = "298182f68c66c05229eb03ac171abe6e309ee79a"
version = "v1.0.3"
[[projects]]
branch = "master"
digest = "1:5e110e5484070e6bd848e87039c68d477cd592ea06cbd20020fd5df58f8c0b5f"
name = "github.com/yryz/ds18b20"
packages = ["."]
pruneopts = "UT"
revision = "3cf383a406247c49e48a80014f3e17ddee418742"
[solve-meta]
analyzer-name = "dep"
analyzer-version = 1
@ -48,6 +56,7 @@
"git.cryptic.systems/fh-trier/go-flucky-server/pkg/types",
"github.com/satori/go.uuid",
"github.com/spf13/cobra",
"github.com/yryz/ds18b20",
]
solver-name = "gps-cdcl"
solver-version = 1

View File

@ -3,6 +3,8 @@ package cmd
import (
"git.cryptic.systems/fh-trier/go-flucky/cmd/config"
"git.cryptic.systems/fh-trier/go-flucky/cmd/remote"
"git.cryptic.systems/fh-trier/go-flucky/cmd/sensor"
"git.cryptic.systems/fh-trier/go-flucky/cmd/temperature"
"github.com/spf13/cobra"
)
@ -21,7 +23,8 @@ func Execute(version string) {
config.InitCmd(rootCmd, configDir)
remote.InitCmd(rootCmd, configDir)
//temperature.InitCmd(rootCmd)
sensor.InitCmd(rootCmd, configDir)
temperature.InitCmd(rootCmd, configDir)
rootCmd.Execute()
}

View File

@ -8,7 +8,7 @@ var configDir string
var configCmd = &cobra.Command{
Use: "config",
Short: "config",
Short: "Manage configuration",
}
func InitCmd(cmd *cobra.Command, c string) {

View File

@ -7,12 +7,14 @@ import (
"github.com/spf13/cobra"
)
var force bool
var registerRemoteCmd = &cobra.Command{
Use: "register",
Short: "register on remote servers",
Run: func(cmd *cobra.Command, args []string) {
if err := remote.SendDevice(configDir); err != nil {
if err := remote.RegisterDevice(configDir, force); err != nil {
log.Fatal(err)
}
},
@ -20,4 +22,5 @@ var registerRemoteCmd = &cobra.Command{
func init() {
remoteCmd.AddCommand(registerRemoteCmd)
registerRemoteCmd.Flags().BoolVarP(&force, "force", "f", false, "Force register on a remote server")
}

View File

@ -8,11 +8,11 @@ var configDir string
var remoteCmd = &cobra.Command{
Use: "remote",
Short: "remote",
Short: "Manage Remote",
}
func InitCmd(cmd *cobra.Command, c string) {
configDir = c
func InitCmd(cmd *cobra.Command, cnf string) {
configDir = cnf
cmd.AddCommand(remoteCmd)
}

23
cmd/sensor/sensor.go Normal file
View File

@ -0,0 +1,23 @@
package sensor
import (
"git.cryptic.systems/fh-trier/go-flucky/cmd/sensor/temperature"
"github.com/spf13/cobra"
)
var configDir string
var sensorCmd = &cobra.Command{
Use: "sensor",
Short: "Manage Sensors",
}
// Execute a
func InitCmd(cmd *cobra.Command, cnf string) {
configDir = cnf
cmd.AddCommand(sensorCmd)
temperature.InitCmd(sensorCmd, cnf)
}

View File

@ -0,0 +1,24 @@
package temperature
import (
"log"
"git.cryptic.systems/fh-trier/go-flucky/pkg/sensor"
"github.com/spf13/cobra"
)
var addTemperatureSensorCmd = &cobra.Command{
Use: "add",
Short: "Add Temperature Sensor",
Args: cobra.ExactArgs(1),
Run: func(cmd *cobra.Command, args []string) {
if err := sensor.AddTemperature(args[0], sensorName, configDir, wirePath); err != nil {
log.Fatal(err)
}
},
}
func init() {
temperatureSensorCmd.AddCommand(addTemperatureSensorCmd)
}

View File

@ -0,0 +1,28 @@
package temperature
import (
"log"
"os"
"git.cryptic.systems/fh-trier/go-flucky/pkg/sensor"
"github.com/spf13/cobra"
)
var quiet bool
var listTemperatureSensorCmd = &cobra.Command{
Use: "list",
Short: "List Temperature Sensors",
Run: func(cmd *cobra.Command, args []string) {
if err := sensor.PrintTemperature(os.Stdout, configDir, quiet); err != nil {
log.Fatal(err)
}
},
}
func init() {
temperatureSensorCmd.AddCommand(listTemperatureSensorCmd)
listTemperatureSensorCmd.Flags().BoolVarP(&quiet, "quiet", "q", false, "List only sensor id's")
}

View File

@ -0,0 +1,24 @@
package temperature
import (
"log"
"git.cryptic.systems/fh-trier/go-flucky/pkg/sensor"
"github.com/spf13/cobra"
)
var rmTemperatureSensorCmd = &cobra.Command{
Use: "rm",
Short: "Remove Temperature Sensor",
Args: cobra.ExactArgs(1),
Run: func(cmd *cobra.Command, args []string) {
if err := sensor.RemoveTemperature(args[0], configDir); err != nil {
log.Fatal(err)
}
},
}
func init() {
temperatureSensorCmd.AddCommand(rmTemperatureSensorCmd)
}

View File

@ -0,0 +1,22 @@
package temperature
import (
"github.com/spf13/cobra"
)
var configDir, sensorName, wirePath string
var temperatureSensorCmd = &cobra.Command{
Use: "temperature",
Short: "Manage Temperature Sensors",
}
// Execute a
func InitCmd(cmd *cobra.Command, cnf string) {
configDir = cnf
cmd.AddCommand(temperatureSensorCmd)
temperatureSensorCmd.PersistentFlags().StringVarP(&sensorName, "name", "n", "", "Define an name for the sensor")
temperatureSensorCmd.PersistentFlags().StringVarP(&wirePath, "wire-path", "w", "/sys/bus/w1/devices", "Default path for wire devices")
}

View File

@ -1,4 +1,4 @@
package remote
package temperature
import (
"log"
@ -8,13 +8,15 @@ import (
"github.com/spf13/cobra"
)
var push bool
var getTemperatureCmd = &cobra.Command{
Use: "get",
Short: "get temperature from sensor",
// Args: cobra.ExactArgs(2),
Args: cobra.ExactArgs(1),
Run: func(cmd *cobra.Command, args []string) {
if err := temperature.Get(os.Stdout); err != nil {
if err := temperature.Get(os.Stdout, args[0], configDir); err != nil {
log.Fatal(err)
}
},

27
cmd/temperature/logs.go Normal file
View File

@ -0,0 +1,27 @@
package temperature
import (
"log"
"os"
"git.cryptic.systems/fh-trier/go-flucky/pkg/temperature"
"github.com/spf13/cobra"
)
//var seconds int32
var logTemperatureCmd = &cobra.Command{
Use: "logs",
Short: "logs print all temperatures from all sensors",
Run: func(cmd *cobra.Command, args []string) {
if err := temperature.Logs(os.Stdout, configDir); err != nil {
log.Fatal(err)
}
},
}
func init() {
temperatureCmd.AddCommand(logTemperatureCmd)
//logTemperatureCmd.Flags().Int32VarP(&seconds, "seconds", "s", 1, "Interval to print new temperatures from sensors")
}

24
cmd/temperature/push.go Normal file
View File

@ -0,0 +1,24 @@
package temperature
import (
"log"
"git.cryptic.systems/fh-trier/go-flucky/pkg/temperature"
"github.com/spf13/cobra"
)
var pushTemperatureCmd = &cobra.Command{
Use: "push",
Short: "push temperature from sensor to remote servers",
Args: cobra.ExactArgs(1),
Run: func(cmd *cobra.Command, args []string) {
if err := temperature.Push(args[0], configDir); err != nil {
log.Fatal(err)
}
},
}
func init() {
temperatureCmd.AddCommand(pushTemperatureCmd)
}

View File

@ -1,16 +1,19 @@
package remote
package temperature
import (
"github.com/spf13/cobra"
)
var configDir string
var temperatureCmd = &cobra.Command{
Use: "temperature",
Short: "Read temperature from sensor",
}
// Execute a
func Init(cmd *cobra.Command) {
func InitCmd(cmd *cobra.Command, cnf string) {
configDir = cnf
cmd.AddCommand(temperatureCmd)

View File

@ -22,7 +22,6 @@ func Create(configDir string, force bool) error {
}
// If no config file exists, create a new one on the location
if !force {
if _, err := os.Stat(configPath); !os.IsNotExist(err) {
return fmt.Errorf("%v already exists. Use -f to overwrite", configPath)
@ -54,7 +53,7 @@ func Read(configDir string) (*types.Config, error) {
var config types.Config
// If no config file exists, create a new one on the location
// If no config file exists, return an error
if _, err := os.Stat(configPath); os.IsNotExist(err) {
return nil, fmt.Errorf("Can not find config %v: %v", configPath, err)
}
@ -78,7 +77,7 @@ func Write(config *types.Config, configDir string) error {
configPath := filepath.Join(configDir, configFilename)
// If no config file exists, create a new one on the location
// If no config file exists, return an error
if _, err := os.Stat(configPath); os.IsNotExist(err) {
return fmt.Errorf("Can not find config %v: %v", configPath, err)
}

View File

@ -4,6 +4,7 @@ import (
"bytes"
"fmt"
"io"
"io/ioutil"
"net/http"
"text/tabwriter"
@ -44,10 +45,10 @@ func List(w io.Writer, configDir string) error {
tw := tabwriter.NewWriter(w, 0, 0, 5, ' ', 0)
fmt.Fprint(tw, "name\taddress\n")
fmt.Fprint(tw, "name\taddress\tregistered\n")
for _, remote := range configuration.Remotes {
fmt.Fprintf(tw, "%v\t%v\n", remote.Name, remote.Address)
fmt.Fprintf(tw, "%v\t%v\t%v\n", remote.Name, remote.Address, remote.Registered)
}
tw.Flush()
@ -123,7 +124,11 @@ func SendTemperature(temperature *stypes.Temperature, configDir string) error {
defer resp.Body.Close()
if resp.StatusCode < 200 || resp.StatusCode > 299 {
return fmt.Errorf("Invalid HTTP-Statuscode - expected 200, got %d", resp.StatusCode)
b, err := ioutil.ReadAll(resp.Body)
if err != nil {
return fmt.Errorf("Invalid HTTP-Statuscode - expected 200, got %d - can not read response body: %v", resp.StatusCode, err)
}
return fmt.Errorf("Invalid HTTP-Statuscode - expected 200, got %d: %v", resp.StatusCode, string(b))
}
}
@ -131,8 +136,8 @@ func SendTemperature(temperature *stypes.Temperature, configDir string) error {
}
// SendDevice ..
func SendDevice(configDir string) error {
// RegisterDevice ..
func RegisterDevice(configDir string, force bool) error {
con, err := config.Read(configDir)
if err != nil {
return err
@ -145,6 +150,7 @@ func SendDevice(configDir string) error {
device.EncodeToJSON(&buffer)
for _, remote := range con.Remotes {
if !remote.Registered || force {
requestURL := fmt.Sprintf("%s%s", remote.Address, "/devices")
req, err := http.NewRequest("POST", requestURL, &buffer)
if err != nil {
@ -159,9 +165,24 @@ func SendDevice(configDir string) error {
defer resp.Body.Close()
if resp.StatusCode < 200 || resp.StatusCode > 299 {
return fmt.Errorf("Invalid HTTP-Statuscode - expected 200, got %d", resp.StatusCode)
b, err := ioutil.ReadAll(resp.Body)
if err != nil {
return fmt.Errorf("Invalid HTTP-Statuscode - expected 200, got %d - can not read response body: %v", resp.StatusCode, err)
}
return fmt.Errorf("Invalid HTTP-Statuscode - expected 200, got %d: %v", resp.StatusCode, string(b))
}
remote.Registered = true
}
}
if err := config.Write(con, configDir); err != nil {
return err
}
return nil
}
func UnregisterDevice(configDir string) error {
return nil
}

14
pkg/sensor/sensor.go Normal file
View File

@ -0,0 +1,14 @@
package sensor
import (
"os"
"path/filepath"
)
func sensorExists(wirePath, sensorID string) bool {
sensorPath := filepath.Join(wirePath, sensorID)
if _, err := os.Stat(sensorPath); os.IsNotExist(err) {
return false
}
return true
}

99
pkg/sensor/temperature.go Normal file
View File

@ -0,0 +1,99 @@
package sensor
import (
"fmt"
"io"
"path/filepath"
"text/tabwriter"
"git.cryptic.systems/fh-trier/go-flucky/pkg/config"
"git.cryptic.systems/fh-trier/go-flucky/pkg/types"
)
func AddTemperature(sensorID, sensorName, configDir, wirePath string) error {
// read cnf file
cnf, err := config.Read(configDir)
if err != nil {
return err
}
// check if sensor exists
if !sensorExists(wirePath, sensorID) {
return fmt.Errorf("Can not find sensor: %v", filepath.Join(wirePath, sensorID))
}
temperatureSensor := &types.WireSensor{
ID: sensorID,
Name: sensorName,
WirePath: wirePath,
}
// append sensor to list
cnf.TemperatureSensors = append(cnf.TemperatureSensors, temperatureSensor)
// write cnf file
if err := config.Write(cnf, configDir); err != nil {
return err
}
return nil
}
func PrintTemperature(w io.Writer, configDir string, quiet bool) error {
// read cnf file
cnf, err := config.Read(configDir)
if err != nil {
return err
}
// declar tabwriter
tw := tabwriter.NewWriter(w, 0, 0, 5, ' ', 0)
// headline
if !quiet {
fmt.Fprint(tw, "id\tname\tpath\n")
}
for _, sensor := range cnf.TemperatureSensors {
if quiet {
fmt.Fprintf(tw, "%v\n", sensor.ID)
} else {
fmt.Fprintf(tw, "%v\t%v\t%v\n", sensor.ID, sensor.Name, sensor.WirePath)
}
}
tw.Flush()
return nil
}
func RemoveTemperature(sensorID, configDir string) error {
// read cnf file
cnf, err := config.Read(configDir)
if err != nil {
return err
}
// remove matching sensor ids
var j int
for _, sensor := range cnf.TemperatureSensors {
if sensor.ID == sensorID {
cnf.TemperatureSensors = append(cnf.TemperatureSensors[:j], cnf.TemperatureSensors[j+1:]...)
if j > 0 {
j = j - 1
}
continue
}
j++
}
// write cnf file
if err := config.Write(cnf, configDir); err != nil {
return err
}
return nil
}

View File

@ -1,10 +1,146 @@
package temperature
import (
"fmt"
"io"
"log"
"os"
"os/signal"
"syscall"
"text/tabwriter"
"time"
stypes "git.cryptic.systems/fh-trier/go-flucky-server/pkg/types"
"git.cryptic.systems/fh-trier/go-flucky/pkg/remote"
"git.cryptic.systems/fh-trier/go-flucky/pkg/types"
"git.cryptic.systems/fh-trier/go-flucky/pkg/config"
uuid "github.com/satori/go.uuid"
"github.com/yryz/ds18b20"
)
func Get(w io.Writer) error {
// Get ...
func Get(w io.Writer, sensorName string, configDir string) error {
temperature, err := getTemperature(sensorName, configDir)
if err != nil {
return err
}
fmt.Fprintf(w, "%3.3f\n", temperature.TemperatureValue)
return nil
}
// Logs ...
func Logs(w io.Writer, configDir string) error {
// get cnf
cnf, err := config.Read(configDir)
if err != nil {
return err
}
// declar tabwriter
tw := tabwriter.NewWriter(w, 0, 0, 5, ' ', 0)
// headlines
for _, sensor := range cnf.TemperatureSensors {
if sensor.Name != "" {
fmt.Fprintf(tw, "%v\t", sensor.Name)
} else {
fmt.Fprintf(tw, "%v\t", sensor.ID)
}
}
fmt.Fprint(tw, "\n")
// body
ticker := time.NewTicker(1 * time.Second)
go func() {
for {
select {
case _, more := <-ticker.C:
if !more {
return
}
for _, sensor := range cnf.TemperatureSensors {
temperature, err := ds18b20.Temperature(sensor.ID)
if err != nil {
return
}
fmt.Fprintf(tw, "%3.3f°\t", temperature)
}
fmt.Fprint(tw, "\n")
tw.Flush()
}
}
}()
signalChannel := make(chan os.Signal)
signal.Notify(signalChannel, syscall.SIGINT, syscall.SIGTERM)
sig := <-signalChannel
log.Printf("Got signal %s, initiating shutdown\n", sig)
ticker.Stop()
return nil
}
// Push ...
func Push(sensorName, configDir string) error {
temperature, err := getTemperature(sensorName, configDir)
if err != nil {
return err
}
if err := remote.SendTemperature(&temperature, configDir); err != nil {
return err
}
return nil
}
func getTemperature(sensorName, configDir string) (stypes.Temperature, error) {
cnf, err := config.Read(configDir)
if err != nil {
return stypes.Temperature{}, err
}
var foundSensor types.WireSensor
var sensorFound bool
for _, sensor := range cnf.TemperatureSensors {
if sensor.ID == sensorName || sensor.Name == sensorName {
foundSensor = *sensor
sensorFound = true
break
}
}
if !sensorFound {
return stypes.Temperature{}, fmt.Errorf("Sensor not found sensor %v in config", sensorName)
}
t, err := ds18b20.Temperature(foundSensor.ID)
if err != nil {
return stypes.Temperature{}, fmt.Errorf("Can not read temperature from sensor %v: %v", foundSensor.ID, err)
}
temperature := stypes.Temperature{
TemperatureID: uuid.NewV4().String(),
TemperatureValue: t,
SensorID: foundSensor.ID,
TemperatureDate: time.Now(),
DeviceID: cnf.DeviceID,
}
return temperature, nil
}

View File

@ -10,6 +10,7 @@ import (
type Config struct {
DeviceID string `json:"device_id"`
Remotes []*Remote `json:"remotes"`
TemperatureSensors []*WireSensor `json:"temperature_sensors"`
}
func (c *Config) ToJSON() (string, error) {
@ -45,4 +46,11 @@ func (c *Config) JSONDecoder(r io.Reader) error {
type Remote struct {
Name string `json:"remote_name"`
Address string `json:"remote_address"`
Registered bool `json:"remote_registered"`
}
type WireSensor struct {
ID string `json:"sensor_id"`
Name string `json:"sensor_name"`
WirePath string `json:"wire_path"`
}

View File

@ -4,6 +4,7 @@ import (
"encoding/json"
"fmt"
"io"
"time"
)
// TypeObject ...
@ -15,6 +16,7 @@ type TypeObject interface {
// Device ...
type Device struct {
DeviceID string `json:"device_id"`
CreationDate time.Time `json:"creation_date"`
}
// EncodeToJson needs a writer to write the struct into json string
@ -40,9 +42,11 @@ func (d *Device) DecodeFromJSON(r io.Reader) error {
// Humidity ...
type Humidity struct {
HumidityID string `json:"humidity_id"`
HumidityValue string `json:"humidity_value"`
HumidityDate string `json:"humidity_date"`
HumidityValue json.Number `json:"humidity_value"`
HumidityDate time.Time `json:"humidity_date"`
SensorID string `json:"sensor_id"`
DeviceID string `json:"device_id"`
CreationDate time.Time `json:"creation_date"`
}
// EncodeToJson needs a writer to write the struct into json string
@ -68,9 +72,11 @@ func (h *Humidity) DecodeFromJSON(r io.Reader) error {
// Temperature ...
type Temperature struct {
TemperatureID string `json:"temperature_id"`
TemperatureValue string `json:"temperature_value"`
TemperatureDate string `json:"temperature_date"`
TemperatureValue float64 `json:"temperature_value,string"`
TemperatureDate time.Time `json:"temperature_date"`
SensorID string `json:"sensor_id"`
DeviceID string `json:"device_id"`
CreationDate time.Time `json:"creation_date"`
}
// EncodeToJson needs a writer to write the struct into json string

24
vendor/github.com/yryz/ds18b20/.gitignore generated vendored Normal file
View File

@ -0,0 +1,24 @@
# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
_obj
_test
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe
*.test
*.prof

201
vendor/github.com/yryz/ds18b20/LICENSE generated vendored Normal file
View File

@ -0,0 +1,201 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "{}"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright {yyyy} {name of copyright owner}
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

53
vendor/github.com/yryz/ds18b20/README.md generated vendored Normal file
View File

@ -0,0 +1,53 @@
# ds18b20
Get sensor data from ds18b20 connected to the Raspberry (GPIO w1 pin).
## Usage
### Connect DS18B20
On the Raspberry Pi, you will need to add `dtoverlay=w1-gpio"` (for regular connection) or `dtoverlay=w1-gpio,pullup="y"` (for parasitic connection) to your /boot/config.txt. The default data pin is GPIO4 (RaspPi connector pin 7), but that can be changed from 4 to `x` with `dtoverlay=w1-gpio,gpiopin=x`.
Here's what I did:
```
sudo echo dtoverlay=w1-gpio-pullup,gpiopin=4 >> /boot/config.txt
sudo modprobe w1_gpio && sudo modprobe w1_therm
```
### Drivers
1-Wire drivers need to be loaded in order to create the connection between the physical sensor and the rPI.
You can load them from the terminal (or from the bin/modules.sh script).
sudo modprobe wire
sudo modprobe w1-gpio
sudo modprobe w1-therm
### Install
go get github.com/yryz/ds18b20
### Code
```go
package main
import (
"fmt"
"github.com/yryz/ds18b20"
)
func main() {
sensors, err := ds18b20.Sensors()
if err != nil {
panic(err)
}
fmt.Printf("sensor IDs: %v\n", sensors)
for _, sensor := range sensors {
t, err := ds18b20.Temperature(sensor)
if err == nil {
fmt.Printf("sensor: %s temperature: %.2f°C\n", sensor, t)
}
}
}
```

49
vendor/github.com/yryz/ds18b20/ds18b20.go generated vendored Normal file
View File

@ -0,0 +1,49 @@
// Copyright 2016 yryz Author. All Rights Reserved.
package ds18b20
import (
"errors"
"io/ioutil"
"strconv"
"strings"
)
var ErrReadSensor = errors.New("failed to read sensor temperature")
// Sensors get all connected sensor IDs as array
func Sensors() ([]string, error) {
data, err := ioutil.ReadFile("/sys/bus/w1/devices/w1_bus_master1/w1_master_slaves")
if err != nil {
return nil, err
}
sensors := strings.Split(string(data), "\n")
if len(sensors) > 0 {
sensors = sensors[:len(sensors)-1]
}
return sensors, nil
}
// Temperature get the temperature of a given sensor
func Temperature(sensor string) (float64, error) {
data, err := ioutil.ReadFile("/sys/bus/w1/devices/" + sensor + "/w1_slave")
if err != nil {
return 0.0, ErrReadSensor
}
raw := string(data)
i := strings.LastIndex(raw, "t=")
if i == -1 {
return 0.0, ErrReadSensor
}
c, err := strconv.ParseFloat(raw[i+2:len(raw)-1], 64)
if err != nil {
return 0.0, ErrReadSensor
}
return c / 1000.0, nil
}