A Go library to read the tire pressures and temperatures from the ZEEPIN TPMS Sensor Bluetooth Low Energy Tire Pressure Monitoring System.

You must first install the Go environment for your operating system from golang.org. Once installed open your terminal program.

• MAC: Terminal. To open the terminal, apple+space and type terminal.
• Linux: If you don't know you shouldn't be using Linux.
• Windows: Not supported.

You should now see your command line interface. From here you will install the program and execute it. Enter the following at the command line;

go get github.com/ricallinson/tpms
cd $GOPATH/src/github.com/ricallinson/tpms
go get ./...

cd $GOPATH/src/github.com/ricallinson/tpms/examples/tpmssh
go install

tpmssh -duration 10s

The tpmssh program should now run for ten seconds and then exit.

For subsequent uses you only need to start the program. No need to install it again.

tpmssh -duration 10s

The example can run indefinitely by excluding the -duration argument.

tmpssh

Alternatively you can provide any number of seconds, minutes or hours for a monitoring duration.

tmpssh -duration 30s
tmpssh -duration 20m
tmpssh -duration 24h

In all cases a log file will be written to ./log containing the raw sensor data as a byte stream.

The API is simply creating an instance of Tpms, starts monitoring and reads the values. The values are checked every second but it depends on the sensors being active. In testing it took 10 minutes to retrieve all four sets of data when there were no pressure changes.

package main

import(
	"fmt"
	"github.com/ricallinson/tpms"
)

func main() {
	tires, err := tpms.NewTpms()
	if err != nil {
		fmt.Println(err)
		return
	}
	tires.StartMonitoring()
	defer tires.StopMonitoring()
	for tires.Read()[0] == nil {}
	sensors := tires.Read()
	fmt.Printf("%d kPa, °C %d\n", sensors[0].Kilopascal, sensors[0].Celsius)
}

There is an option for logging the raw data from the sensors. This will keep logging until .StopMonitoring() is called or the process is exited.

tires, _ := tpms.NewTpms()
tires.Log("/path/to/file")

cd $GOPATH/src/github.com/ricallinson/tpms
go test

cd $GOPATH/src/github.com/ricallinson/tpms
go test -covermode=count -coverprofile=count.out; go tool cover -html=count.out