Is bi-directional file transfer possible using SAP?

Galaxy Watch for Tizen
1

Is it possible to create a bi-directional file transfer application (between Galaxy watch and Android phone) using Samsung Accessory Protocol? I currently have my application transferring file from the watch to the phone but I am unable to have to transfer file from phone to the watch. It would be great if anyone could point out some resources that I can take a look at or if this is possible. Thank you!

2

Yes, SAP allows to send and receive files.

FAQ about SAP: Galaxy Accessory - Build | Samsung Developers

Examples: Galaxy Watch - Build | Samsung Developers

3

This is my current accessoryservices.xml on the Android side. Are you allowed to define two different service profiles (one for receiving and one for sending) as shown below? Thank you.

<resources>
    <application name = "FileTransferReceiver">
        <serviceProfile
            id="/filetransfer/one"
            name="FileTransferReceiver"
            role="provider"
            serviceImpl="sensing_project.sensingApp.FileTransferReceiver"
            version="1.0"
            serviceLimit="ANY"
            serviceTimeout="10">
            <supportedTransports>
                <transport type="TRANSPORT_BT"/>
                <transport type="TRANSPORT_WIFI"/>
            </supportedTransports>
            <serviceChannel
                id="107"
                dataRate="low"
                priority="low"
                reliability= "enable"/>
        </serviceProfile>
        <serviceProfile
            id="/filetransfer/two"
            name="FileTransferSender"
            role="consumer"
            serviceImpl="sensing_project.sensingApp.FileTransferSender"
            version="1.0"
            serviceLimit="ANY"
            serviceTimeout="10">
            <supportedTransports>
                <transport type="TRANSPORT_BT"/>
                <transport type="TRANSPORT_WIFI"/>
            </supportedTransports>
            <serviceChannel
                id="108"
                dataRate="low"
                priority="low"
                reliability= "enable"/>
        </serviceProfile>
    </application>
</resources>

Just as a reference, this is my accessoryservices.xml on my Tizen web watch application side,

<?xml version="1.0" encoding="UTF-8"?>
<resources>
    <application name="FileTransferReceiver" >
        <serviceProfile
            id="/filetransfer/one"
            name="FileTransferSender"
            role="consumer"
            version="1.0">
            <supportedTransports>
                <transport type="TRANSPORT_BT" />
                <transport type="TRANSPORT_WIFI"/>
            </supportedTransports>
            <serviceChannel
                id="107"
                dataRate="low"
                priority="low"
                reliability= "enable">
            </serviceChannel>
        </serviceProfile>
		<serviceProfile
				id="/filetransfer/two"
				name="FileTransferReceiver"
				role="provider"
				version="1.0">
			<supportedTransports>
				<transport type="TRANSPORT_BT"/>
                <transport type="TRANSPORT_WIFI"/>
			</supportedTransports>
			<serviceChannel
				id="108"
				dataRate="low"
				priority="low"
				reliability="enable">
			</serviceChannel>
		</serviceProfile>
    </application>
</resources>
4

YES, sap allows to send and recieve files

njmcdirect

5

Good to know. Then there must be an issue with the actual logic rather than the config files. Thank you!