33 lines
1 KiB
Go
33 lines
1 KiB
Go
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package bluetooth
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// This file implements 16-bit and 128-bit UUIDs as defined in the Bluetooth
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// specification.
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// UUID is a single UUID as used in the Bluetooth stack. It is represented as a
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// [4]uint32 instead of a [16]byte for efficiency.
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type UUID [4]uint32
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// New16bitUUID returns a new 128-bit UUID based on a 16-bit UUID.
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//
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// Note: only use registered UUIDs. See
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// https://www.bluetooth.com/specifications/gatt/services/ for a list.
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func New16BitUUID(shortUUID uint16) UUID {
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// https://stackoverflow.com/questions/36212020/how-can-i-convert-a-bluetooth-16-bit-service-uuid-into-a-128-bit-uuid
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var uuid UUID
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uuid[0] = 0x5F9B34FB
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uuid[1] = 0x80000080
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uuid[2] = 0x00001000
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uuid[3] = uint32(shortUUID)
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return uuid
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}
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// Is16Bit returns whether this UUID is a 16-bit BLE UUID.
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func (uuid UUID) Is16Bit() bool {
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return uuid.Is32Bit() && uuid[3] == uint32(uint16(uuid[3]))
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}
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// Is32Bit returns whether this UUID is a 32-bit BLE UUID.
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func (uuid UUID) Is32Bit() bool {
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return uuid[0] == 0x5F9B34FB && uuid[1] == 0x80000080 && uuid[2] == 0x00001000
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}
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