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Getting Started with the
Timex USB Datalink SDK
Introducing the Timex USB Datalink Wristwatch
The Timex USB Datalink Wristwatch, known internally by Timex as the model M851, features a watch
platform that can be configured by a PC and can upload and download through a standard USB port. The watch
has 14 slots available for applications which you can choose according to your requirements. Want a business
watch for the week? Configure the watch with appointment and contact app
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Tell me more about designing WristApps… Writing custom WristApps gives you the most flexible solution for your specific watch-based requirements. You need to have the following: • Timex USB Datalink Watch; • PC with Windows OS and a USB port; • Text file editor; • Experience in writing assembly language and debugging code; • Patience to read through some thick documents. Let’s build the sample Counter WristApp… This will guide you to building the Counter WristApp source files p
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3. Run the WristApp Builder. Now, we will convert the source files that can be downloaded to the watch. Using file explorer, proceed to the directory C:\M851\BIN. Double-click on the file M851 WristApp Builder.exe. The information required for the WristApp builder to create the Counter WristApp is located in the file C:\m851\app\counter\build\counter.scr. Populating the entries in this utility is described in the document “M851 Counter WristApp Design Rev 1_0.pdf”. So let’s open
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the USB cable. The watch will go back to Time-of-Day mode. Press the MODE switch to proceed to the next mode, which should be the Counter mode. Recommended WristApp reading… WristApp Design Guide. This guide provides an overview of the USB Datalink watch OS and how it processes system events to be passed to the applications for further processing. This document details how WristApps can make use of the system resources and API to perform custom operations. [m851 WristApp Design
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foreground state handler, changing to the next mode, handling the crown, setting and blinking operations. TimeWarp. A sample terminate-and-stay-resident code. A code plug-in for the built-in TOD application to enhance display updates during minute rollovers. World Time. Displays the 24 time zones specified in a PC configuration application. This shows how the database access APIs are used. Scrolling APIs are also used in this application. The PC interface to configure the database
