only notify needed (#1562)

* only notify needed * added docs
2018-10-30 19:57:01 -07:00
parent 198f423f5a
commit 7bc7d2f2ff
2 changed files with 20 additions and 1 deletions
--- a/docs/device/bluetooth/hf2.md
+++ b/docs/device/bluetooth/hf2.md
@ -0,0 +1,19 @@
+# Bluetooth HF2
+
+The Bluetooth HF2 service implements a subset of [HF2](https://github.com/Microsoft/uf2/blob/master/hf2.md), namely the serial message logging.
+
+## Service
+
+### HF2 service 
+
+ * UUID:  ``b112f5e6-2679-30da-a26e-0273b6043849``
+
+### TX Characteristic
+
+* Optional
+* UUDI: ``b112f5e6-2679-30da-a26e-0273b604384a``
+* NOTIFY only
+
+This characteristic mostly emits HF2 serial messages. The first byte contains the type of message and length in the lower 6 bits. The message contains up to 19 bytes.
+
+This service is supported by the MakeCode editor to receive messages.