From: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
This enables write and notify exclusive access via file descriptors in
case the characteristic is actually trying to emulate a byte stream
transfer or have a protocol on top of GATT.
---
doc/gatt-api.txt | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 55 insertions(+)
diff --git a/doc/gatt-api.txt b/doc/gatt-api.txt
index 6c98b87..02f389c 100644
--- a/doc/gatt-api.txt
+++ b/doc/gatt-api.txt
@@ -91,6 +91,51 @@ Methods array{byte} ReadValue(dict options)
org.bluez.Error.NotAuthorized
org.bluez.Error.NotSupported
+ fd, uint16 AcquireWrite() [experimental] (Client only)
+
+ Acquire write file descriptor and MTU and lock
+ write access to the characteristic.
+
+ Only works with characteristic that has
+ write-without-response Flag.
+
+ To release the lock the client shall close the file
+ descriptor, a HUP is generated in case the device
+ is disconnected.
+
+ Note: the MTU can only be negotiated once and is
+ symmetric therefore this method may be delayed in
+ order to have the exchange MTU completed, because of
+ that the file descriptor is closed during
+ reconnections as the MTU has to be renegotiated.
+
+ Possible Errors: org.bluez.Error.Failed
+ org.bluez.Error.NotSupported
+
+ fd, uint16 AcquireNotify() [experimental] (Client only)
+
+ Acquire notify file descriptor and MTU and lock
+ notifications to the characteristic.
+
+ Only works with characteristic that has notify
+ flag and no other client have called StartNotify.
+
+ Notification are enabled during this procedure so
+ StartNotify shall not be called.
+
+ To release the lock the client shall close the file
+ descriptor, a HUP is generated in case the device
+ is disconnected.
+
+ Note: the MTU can only be negotiated once and is
+ symmetric therefore this method may be delayed in
+ order to have the exchange MTU completed, because of
+ that the file descriptor is closed during
+ reconnections as the MTU has to be renegotiated.
+
+ Possible Errors: org.bluez.Error.Failed
+ org.bluez.Error.NotSupported
+
void StartNotify()
Starts a notification session from this characteristic
@@ -125,6 +170,16 @@ Properties string UUID [read-only]
when a notification or indication is received, upon
which a PropertiesChanged signal will be emitted.
+ boolean WriteLocked [read-only]
+
+ True, if this characteristic has been acquire by any
+ client using AcquireWrite.
+
+ boolean NotifyLocked [read-only]
+
+ True, if this characteristic has been acquire by any
+ client using AcquireNotify.
+
boolean Notifying [read-only, optional]
True, if notifications or indications on this
--
2.9.4
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