robocar-throttle/part/part.go

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package part
import (
"github.com/cyrilix/robocar-base/mqttdevice"
mqtt "github.com/eclipse/paho.mqtt.golang"
"time"
)
type CommandValue struct {
Value float64
Confidence float64
}
type Steering CommandValue
type Throttle CommandValue
func NewPart(pub mqttdevice.Publisher, throttleTopic string, minValue, maxValue float64) *ThrottlePart {
return &ThrottlePart{
pub: pub,
throttleTopic: throttleTopic,
minThrottle: minValue,
maxThrottle: maxValue,
}
}
type ThrottlePart struct {
client mqtt.Client
pub mqttdevice.Publisher
throttleTopic string
minThrottle, maxThrottle float64
cancel chan interface{}
}
func (p *ThrottlePart) Start() error {
p.cancel = make(chan interface{})
ticker := time.NewTicker(500 * time.Millisecond)
for {
p.pub.Publish(p.throttleTopic, mqttdevice.NewMqttValue(Throttle{
Value: p.minThrottle,
Confidence: 1.0,
}))
select {
case <-ticker.C:
case <-p.cancel:
break
}
}
}
func (p *ThrottlePart) Stop() {
close(p.cancel)
}