58 lines
1.3 KiB
Go
58 lines
1.3 KiB
Go
package ble
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import (
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"bytes"
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"gobot.io/x/gobot"
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)
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// BatteryDriver represents the Battery Service for a BLE Peripheral
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type BatteryDriver struct {
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name string
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connection gobot.Connection
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gobot.Eventer
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}
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// NewBatteryDriver creates a BatteryDriver
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func NewBatteryDriver(a BLEConnector) *BatteryDriver {
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n := &BatteryDriver{
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name: gobot.DefaultName("Battery"),
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connection: a,
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Eventer: gobot.NewEventer(),
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}
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return n
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}
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// Connection returns the Driver's Connection to the associated Adaptor
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func (b *BatteryDriver) Connection() gobot.Connection { return b.connection }
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// Name returns the Driver name
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func (b *BatteryDriver) Name() string { return b.name }
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// SetName sets the Driver name
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func (b *BatteryDriver) SetName(n string) { b.name = n }
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// adaptor returns BLE adaptor
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func (b *BatteryDriver) adaptor() BLEConnector {
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return b.Connection().(BLEConnector)
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}
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// Start tells driver to get ready to do work
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func (b *BatteryDriver) Start() (err error) {
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return
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}
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// Halt stops battery driver (void)
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func (b *BatteryDriver) Halt() (err error) { return }
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// GetBatteryLevel reads and returns the current battery level
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func (b *BatteryDriver) GetBatteryLevel() (level uint8) {
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var l uint8
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c, _ := b.adaptor().ReadCharacteristic("2a19")
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buf := bytes.NewBuffer(c)
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val, _ := buf.ReadByte()
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l = uint8(val)
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return l
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}
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