Initial commit

This commit is contained in:
tkl 2023-01-13 08:25:44 +01:00
commit 397f9b0277
10 changed files with 481 additions and 0 deletions

16
.vscode/launch.json vendored Normal file
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{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"name": "Launch Package",
"type": "go",
"request": "launch",
"mode": "auto",
"program": "${fileDirname}",
// "args": ["-c", "/etc/activitycollect/config.json"]
}
]
}

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.vscode/tasks.json vendored Normal file
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{
// See https://go.microsoft.com/fwlink/?LinkId=733558
// for the documentation about the tasks.json format
"version": "2.0.0",
"tasks": [
{
"label": "Go build",
"type": "shell",
"command": "make all",
"group": {
"kind": "build",
"isDefault": true
}
}
]
}

48
Makefile Normal file
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PROJECT_NAME := gasmeter
PREFIX ?= /usr/bin
CONFIG_DIR := /etc/$(PROJECT_NAME)
SYSTEM_DIR := /usr/lib/systemd/system
CONFIG_FILE := config/config.json
BIN_FILE := bin/$(PROJECT_NAME)
UNIT_FILE := $(PROJECT_NAME).service
README_FILE := README.md
.PHONY: all
all:
mkdir -p bin
go clean
go mod tidy
go build -o $(BIN_FILE)
.PHONY: clean
clean:
go clean
rm -rf bin
.PHONY: install
install: all
@if [ -f $(CONFIG_DIR)/$(notdir $(CONFIG_FILE)) ]; then \
echo "$(CONFIG_DIR)/$(notdir $(CONFIG_FILE)) already exists - skipping..."; \
else \
install -d $(CONFIG_DIR); \
install -m 0644 $(CONFIG_FILE) $(CONFIG_DIR); \
echo "install -d $(CONFIG_DIR)"; \
echo "install -m 0644 $(CONFIG_FILE) $(CONFIG_DIR)"; \
fi
install -d $(PREFIX)
install -m 0755 $(BIN_FILE) $(PREFIX)
install -d $(SYSTEM_DIR)
install -m 0644 $(UNIT_FILE) $(SYSTEM_DIR)
.PHONY: uninstall
uninstall:
rm -rf $(CONFIG_DIR)
rm -rf $(SYSTEM_DIR)/$(UNIT_FILE)
rm -rf $(PREFIX)/$(PROJECT_NAME)
.PHONY: package
package: all
tar cvzf $(PROJECT_NAME).tar.gz $(CONFIG_FILE) $(BIN_FILE) $(UNIT_FILE) $(README_FILE)

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README.md Normal file
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# Gasmeter
Collect volume and power data of gas meter and store them in InfluxDB
## Installation
```shell
make install
```
Default install location for the executable is `/usr/bin`. This can be
modyfied by changing the `PREFIX` variable.
```shell
PREFIX=/usr/local/bin make install
```
## Uninstallation
```shell
make uninstall
```
When `PREFIX` was modyfied for installation it needs to be changed for
uninstalling as well.
```shell
PREFIX=/usr/local/bin make uninstall
```
## Configuration
Default configuration file is installed in `/etc/gasmeter/config.json`
## systemd service
```shell
systemctl enable gasmeter.service
systemctl start gasmeter.service
```

BIN
bin/gasmeter Executable file

Binary file not shown.

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config/config.json Normal file
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{
"data_storage": "/var/lib/gasmeter/data.json",
"influxdb_host": "localhost",
"influxdb_port": 8086,
"influxdb_token": "",
"trigger_level": 4500.0,
"trigger_hysterese": 100.0,
"step_width": 0.001,
"zustandszahl": 0.9636,
"brennwert_hs": 11.218
}

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gasmeter.service Normal file
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[Unit]
Description=gasmeter service
After=multi-user.target
[Service]
Type=idle
ExecStart=/usr/bin/gasmeter -c /etc/gasmeter/config.json
[Install]
WantedBy=multi-user.target

17
go.mod Normal file
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module chicks
go 1.19
require periph.io/x/host/v3 v3.8.0
require (
github.com/influxdata/influxdb-client-go/v2 v2.12.1
periph.io/x/conn/v3 v3.7.0
)
require (
github.com/deepmap/oapi-codegen v1.8.2 // indirect
github.com/influxdata/line-protocol v0.0.0-20200327222509-2487e7298839 // indirect
github.com/pkg/errors v0.9.1 // indirect
golang.org/x/net v0.0.0-20210119194325-5f4716e94777 // indirect
)

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go.sum Normal file
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@ -0,0 +1,86 @@
github.com/cyberdelia/templates v0.0.0-20141128023046-ca7fffd4298c/go.mod h1:GyV+0YP4qX0UQ7r2MoYZ+AvYDp12OF5yg4q8rGnyNh4=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/deepmap/oapi-codegen v1.8.2 h1:SegyeYGcdi0jLLrpbCMoJxnUUn8GBXHsvr4rbzjuhfU=
github.com/deepmap/oapi-codegen v1.8.2/go.mod h1:YLgSKSDv/bZQB7N4ws6luhozi3cEdRktEqrX88CvjIw=
github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
github.com/getkin/kin-openapi v0.61.0/go.mod h1:7Yn5whZr5kJi6t+kShccXS8ae1APpYTW6yheSwk8Yi4=
github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
github.com/go-chi/chi/v5 v5.0.0/go.mod h1:BBug9lr0cqtdAhsu6R4AAdvufI0/XBzAQSsUqJpoZOs=
github.com/go-openapi/jsonpointer v0.19.5/go.mod h1:Pl9vOtqEWErmShwVjC8pYs9cog34VGT37dQOVbmoatg=
github.com/go-openapi/swag v0.19.5/go.mod h1:POnQmlKehdgb5mhVOsnJFsivZCEZ/vjK9gh66Z9tfKk=
github.com/golangci/lint-1 v0.0.0-20181222135242-d2cdd8c08219/go.mod h1:/X8TswGSh1pIozq4ZwCfxS0WA5JGXguxk94ar/4c87Y=
github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
github.com/influxdata/influxdb-client-go/v2 v2.12.1 h1:RrjoDNyBGFYvjKfjmtIyYAn6GY/SrtocSo4RPlt+Lng=
github.com/influxdata/influxdb-client-go/v2 v2.12.1/go.mod h1:YteV91FiQxRdccyJ2cHvj2f/5sq4y4Njqu1fQzsQCOU=
github.com/influxdata/line-protocol v0.0.0-20200327222509-2487e7298839 h1:W9WBk7wlPfJLvMCdtV4zPulc4uCPrlywQOmbFOhgQNU=
github.com/influxdata/line-protocol v0.0.0-20200327222509-2487e7298839/go.mod h1:xaLFMmpvUxqXtVkUJfg9QmT88cDaCJ3ZKgdZ78oO8Qo=
github.com/jonboulle/clockwork v0.3.0 h1:9BSCMi8C+0qdApAp4auwX0RkLGUjs956h0EkuQymUhg=
github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
github.com/labstack/echo/v4 v4.2.1/go.mod h1:AA49e0DZ8kk5jTOOCKNuPR6oTnBS0dYiM4FW1e6jwpg=
github.com/labstack/gommon v0.3.0/go.mod h1:MULnywXg0yavhxWKc+lOruYdAhDwPK9wf0OL7NoOu+k=
github.com/mailru/easyjson v0.0.0-20190614124828-94de47d64c63/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
github.com/matryer/moq v0.0.0-20190312154309-6cfb0558e1bd/go.mod h1:9ELz6aaclSIGnZBoaSLZ3NAl1VTufbOrXBPvtcy6WiQ=
github.com/mattn/go-colorable v0.1.2/go.mod h1:U0ppj6V5qS13XJ6of8GYAs25YV2eR4EVcfRqFIhoBtE=
github.com/mattn/go-colorable v0.1.7/go.mod h1:u6P/XSegPjTcexA+o6vUJrdnUu04hMope9wVRipJSqc=
github.com/mattn/go-colorable v0.1.8/go.mod h1:u6P/XSegPjTcexA+o6vUJrdnUu04hMope9wVRipJSqc=
github.com/mattn/go-isatty v0.0.8/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s=
github.com/mattn/go-isatty v0.0.9/go.mod h1:YNRxwqDuOph6SZLI9vUUz6OYw3QyUt7WiY2yME+cCiQ=
github.com/mattn/go-isatty v0.0.12/go.mod h1:cbi8OIDigv2wuxKPP5vlRcQ1OAZbq2CE4Kysco4FUpU=
github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
github.com/valyala/fasttemplate v1.0.1/go.mod h1:UQGH1tvbgY+Nz5t2n7tXsz52dQxojPUpymEIMZ47gx8=
github.com/valyala/fasttemplate v1.2.1/go.mod h1:KHLXt3tVN2HBp8eijSv/kGJopbvo7S+qRAEEKiv+SiQ=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad/go.mod h1:jdWPYTVW3xRLrWPugEBEK3UY2ZEsg3UU495nc5E+M+I=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
golang.org/x/net v0.0.0-20210119194325-5f4716e94777 h1:003p0dJM77cxMSyCPFphvZf/Y5/NXf5fzg6ufd1/Oew=
golang.org/x/net v0.0.0-20210119194325-5f4716e94777/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200826173525-f9321e4c35a6/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/time v0.0.0-20201208040808-7e3f01d25324/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
golang.org/x/time v0.0.0-20210220033141-f8bda1e9f3ba/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20191125144606-a911d9008d1f/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
periph.io/x/conn/v3 v3.7.0 h1:f1EXLn4pkf7AEWwkol2gilCNZ0ElY+bxS4WE2PQXfrA=
periph.io/x/conn/v3 v3.7.0/go.mod h1:ypY7UVxgDbP9PJGwFSVelRRagxyXYfttVh7hJZUHEhg=
periph.io/x/host/v3 v3.8.0 h1:T5ojZ2wvnZHGPS4h95N2ZpcCyHnsvH3YRZ1UUUiv5CQ=
periph.io/x/host/v3 v3.8.0/go.mod h1:rzOLH+2g9bhc6pWZrkCrmytD4igwQ2vxFw6Wn6ZOlLY=

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package main
import (
"context"
"encoding/binary"
"encoding/json"
"flag"
"log"
"math"
"os"
"path"
"strconv"
"time"
"periph.io/x/conn/v3/i2c"
"periph.io/x/conn/v3/i2c/i2creg"
"periph.io/x/conn/v3/mmr"
"periph.io/x/host/v3"
influxdb2 "github.com/influxdata/influxdb-client-go/v2"
)
type config struct {
DataStorage string `json:"data_storage"`
InfluxdbHost string `json:"influxdb_host"`
InfluxdbPort int `json:"influxdb_port"`
InfluxdbToken string `json:"influxdb_token"`
TriggerLevel float64 `json:"trigger_level"`
TriggerHysterese float64 `json:"trigger_hysterese"`
StepWidth float64 `json:"step_width"`
Zustandszahl float64 `json:"zustandszahl"`
BrennwertHS float64 `json:"brennwert_hs"`
}
type data struct {
Unit string `json:"unit"`
Value float64 `json:"value"`
}
type sample struct {
Volume data `json:"volume"`
Power data `json:"power"`
}
var (
logger log.Logger = *log.Default()
config_path string
config_cache = config{
DataStorage: "",
InfluxdbHost: "",
InfluxdbPort: 0,
InfluxdbToken: "",
TriggerLevel: 0.0,
TriggerHysterese: 0.0,
StepWidth: 0.0,
Zustandszahl: 0.0,
BrennwertHS: 0.0,
}
)
func read_config() {
data, err := os.ReadFile(config_path)
if err != nil {
logger.Printf("Unable to read %s", config_path)
return
}
err = json.Unmarshal(data, &config_cache)
if err != nil {
logger.Print("Unable to evaluate config data")
return
}
}
func main() {
// file, err := os.OpenFile("log.txt", os.O_WRONLY|os.O_CREATE, 0644)
// if err != nil {
// logger.Println(err)
// }
// defer file.Close()
// logger.SetOutput(file)
logger.SetPrefix("Gas: ")
logger.Println("Starting")
flag.StringVar(&config_path, "c", "./config/config.json", "Specify path to find the config file. Default is ./config/config.json")
flag.Parse()
read_config()
trigger_state := false
old_state := false
var gas sample
// Create data storage directory
dir := path.Dir(config_cache.DataStorage)
err := os.MkdirAll(dir, os.ModePerm)
if err != nil {
logger.Fatal(err)
}
// Try reading stored value
data, err := os.ReadFile(config_cache.DataStorage)
if err != nil {
log.Print(err)
gas.Volume.Unit = "m³"
gas.Volume.Value = 0.0
gas.Power.Unit = "kW/h"
gas.Power.Value = 0.0
} else {
err = json.Unmarshal(data, &gas)
if err != nil {
logger.Print(err)
}
}
last_value := gas.Volume.Value
// prepare influx connection
influxdb_url := "http://" + config_cache.InfluxdbHost + ":" + strconv.Itoa(config_cache.InfluxdbPort)
client := influxdb2.NewClient(influxdb_url, config_cache.InfluxdbToken)
// always close client at the end
defer client.Close()
// get non-blocking write client
writeAPI := client.WriteAPIBlocking("tkl", "home")
ctx := context.Background()
// Int I2C system
if _, err := host.Init(); err != nil {
logger.Fatal(err)
}
bus, err := i2creg.Open("")
if err != nil {
logger.Fatal(err)
}
defer bus.Close()
i2c_dev := i2c.Dev{
Bus: bus,
Addr: 0x0d,
}
mem_dev := mmr.Dev8{
Conn: &i2c_dev,
Order: binary.BigEndian,
}
err = mem_dev.WriteUint8(0x09, 0x1d)
if err != nil {
logger.Fatal("unable to write to reg 0x09")
}
for { // ever
var raw [6]uint8
var i uint8
for i = 0; i < 6; i++ {
res, err := mem_dev.ReadUint8(i)
if err != nil {
logger.Print("unable to read from reg 0")
continue
}
raw[i] = res
}
var mag_x int16
mag_x = int16(raw[0])
mag_x |= int16(raw[1]) << 8
fmag_x := float64(mag_x)
var mag_y int16
mag_y = int16(raw[2])
mag_y |= int16(raw[3]) << 8
fmag_y := float64(mag_y)
var mag_z int16
mag_z = int16(raw[4])
mag_z |= int16(raw[5]) << 8
fmag_z := float64(mag_z)
mag := math.Sqrt(fmag_x*fmag_x + fmag_y*fmag_y + fmag_z*fmag_z)
logger.Printf("mag: %f\n\n", mag)
old_state = trigger_state
if mag > config_cache.TriggerLevel+config_cache.TriggerHysterese {
trigger_state = true
} else if mag < config_cache.TriggerLevel-config_cache.TriggerHysterese {
trigger_state = false
}
if !old_state && trigger_state {
gas.Volume.Value += config_cache.StepWidth
}
logger.Printf("Volume: %f %s\n", gas.Volume.Value, gas.Volume.Unit)
gas.Power.Value = gas.Volume.Value * config_cache.BrennwertHS * config_cache.Zustandszahl
logger.Printf("Power: %f %s\n", gas.Power.Value, gas.Power.Unit)
if last_value != gas.Volume.Value {
last_value = gas.Volume.Value
file, err := os.OpenFile(config_cache.DataStorage, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
if err != nil {
log.Print(err)
} else {
res, err := json.Marshal(gas)
if err != nil {
logger.Print(err)
} else {
file.Write(res)
}
file.Close()
}
point := influxdb2.NewPointWithMeasurement("gas")
point.AddTag("sensor", "gasmeter")
point.AddField("volume", gas.Volume.Value)
point.AddField("unit", gas.Volume.Unit)
point.SetTime(time.Now())
err = writeAPI.WritePoint(ctx, point)
if err != nil {
logger.Print(err.Error())
}
point = influxdb2.NewPointWithMeasurement("gas")
point.AddTag("sensor", "gasmeter")
point.AddField("power", gas.Power.Value)
point.AddField("unit", gas.Power.Unit)
point.SetTime(time.Now())
err = writeAPI.WritePoint(ctx, point)
if err != nil {
logger.Print(err.Error())
}
err = writeAPI.Flush(ctx)
if err != nil {
logger.Print(err.Error())
continue
}
}
time.Sleep(time.Millisecond * 1000)
}
}