itd/infinitime/info.go

102 lines
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package infinitime
import (
"context"
"encoding/binary"
)
// Address returns the MAC address of the connected device.
func (d *Device) Address() string {
return d.device.Address.String()
}
// Version returns the version of InifniTime that the connected device is running.
func (d *Device) Version() (string, error) {
c, err := d.getChar(firmwareVerChar)
if err != nil {
return "", err
}
ver := make([]byte, 16)
n, err := c.Read(ver)
return string(ver[:n]), err
}
// BatteryLevel returns the current battery level of the connected PineTime.
func (d *Device) BatteryLevel() (lvl uint8, err error) {
c, err := d.getChar(batteryLevelChar)
if err != nil {
return 0, err
}
err = binary.Read(c, binary.LittleEndian, &lvl)
return lvl, err
}
// WatchBatteryLevel calls fn whenever the battery level changes.
func (d *Device) WatchBatteryLevel(ctx context.Context, fn func(level uint8, err error)) error {
return watchChar(ctx, d, batteryLevelChar, fn)
}
// StepCount returns the current step count recorded on the watch.
func (d *Device) StepCount() (sc uint32, err error) {
c, err := d.getChar(stepCountChar)
if err != nil {
return 0, err
}
err = binary.Read(c, binary.LittleEndian, &sc)
return sc, err
}
// WatchStepCount calls fn whenever the step count changes.
func (d *Device) WatchStepCount(ctx context.Context, fn func(count uint32, err error)) error {
return watchChar(ctx, d, stepCountChar, fn)
}
// HeartRate returns the current heart rate recorded on the watch.
func (d *Device) HeartRate() (uint8, error) {
c, err := d.getChar(heartRateChar)
if err != nil {
return 0, err
}
data := make([]byte, 2)
_, err = c.Read(data)
if err != nil {
return 0, err
}
return data[1], nil
}
// WatchHeartRate calls fn whenever the heart rate changes.
func (d *Device) WatchHeartRate(ctx context.Context, fn func(rate uint8, err error)) error {
return watchChar(ctx, d, heartRateChar, func(rate [2]uint8, err error) {
fn(rate[1], err)
})
}
// MotionValues represents gyroscope coordinates.
type MotionValues struct {
X int16
Y int16
Z int16
}
// Motion returns the current gyroscope coordinates of the PineTime.
func (d *Device) Motion() (mv MotionValues, err error) {
c, err := d.getChar(rawMotionChar)
if err != nil {
return MotionValues{}, err
}
err = binary.Read(c, binary.LittleEndian, &mv)
return mv, err
}
// WatchMotion calls fn whenever the gyroscope coordinates change.
func (d *Device) WatchMotion(ctx context.Context, fn func(level MotionValues, err error)) error {
return watchChar(ctx, d, rawMotionChar, fn)
}