Elara6331/infinitime
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added local time characteristic #4

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Elara6331 merged 5 commits from cybuzuma/infinitime:gatt_localtime into master 2022-11-21 16:51:50 +00:00
Conversation 11 Commits 5 Files Changed 1 +27 -11
1 changed files with 27 additions and 11 deletions
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Showing only changes of commit 49cde2b3c2 - Show all commits

32
infinitime.go
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@ -698,7 +698,9 @@ func (i *Device) WatchMotion(ctx context.Context) (<-chan MotionValues, error) {
return out, nil return out, nil
} }
// SetTime sets the watch's time using the Current Time Service // SetTime sets the watch's
// * time using the Current Time Service's current time characteristic
// * timezone information using the CTS's local time characteristic
func (i *Device) SetTime(t time.Time) error { func (i *Device) SetTime(t time.Time) error {
if err := i.checkStatus(i.currentTimeChar, CurrentTimeChar); err != nil { if err := i.checkStatus(i.currentTimeChar, CurrentTimeChar); err != nil {
return err return err
@ -713,24 +715,38 @@ func (i *Device) SetTime(t time.Time) error {
binary.Write(buf, binary.LittleEndian, uint8(t.Weekday())) binary.Write(buf, binary.LittleEndian, uint8(t.Weekday()))
binary.Write(buf, binary.LittleEndian, uint8((t.Nanosecond()/1000)/1e6*256)) binary.Write(buf, binary.LittleEndian, uint8((t.Nanosecond()/1000)/1e6*256))
binary.Write(buf, binary.LittleEndian, uint8(0b0001)) binary.Write(buf, binary.LittleEndian, uint8(0b0001))
return i.currentTimeChar.WriteValue(buf.Bytes(), nil) if err := i.currentTimeChar.WriteValue(buf.Bytes(), nil); err != nil {
return err
} }
// SetTimezone sets the watch's timezone information using the Local Time Service
func (i *Device) SetTimezone(t time.Time) error {
if err := i.checkStatus(i.localTimeChar, LocalTimeChar); err != nil { if err := i.checkStatus(i.localTimeChar, LocalTimeChar); err != nil {
// this characteristic might not be there in older versions of infinitime
// so we fail silently in this case.
_, notAvailable := err.(ErrCharNotAvail)
if notAvailable {
log.Warn().Msg("No Local Time Characteristic detected. Old Version of Infinitime (pre 1.10.0)?")
return nil
} else {
return err return err
} }
}
_, offset := t.Zone() _, offset := t.Zone()
dst := 0 dst := 0
// Local time expects two values: the timezone offset and the dst offset, both
// expressed in quarters of an hour.
// Timezone offset is to be constant over DST, with dst offset holding the offset != 0
// when DST is in effect.
// As there is no standard way in go to get the actual dst offset, we assume it to be 1h
// when DST is in effect
if t.IsDST() { if t.IsDST() {
dst = 3600 dst = 3600
offset -= 3600 offset -= 3600
} }
buf := &bytes.Buffer{} bufTz := &bytes.Buffer{}
binary.Write(buf, binary.LittleEndian, uint8(offset / 3600 * 4)) binary.Write(bufTz, binary.LittleEndian, uint8(offset / 3600 * 4))
binary.Write(buf, binary.LittleEndian, uint8(dst / 3600 * 4)) binary.Write(bufTz, binary.LittleEndian, uint8(dst / 3600 * 4))
return i.localTimeChar.WriteValue(buf.Bytes(), nil) return i.localTimeChar.WriteValue(bufTz.Bytes(), nil)
} }
// Notify sends a notification to InfiniTime via // Notify sends a notification to InfiniTime via