Timex M851 User Manual

Page 2 of 5 

 

 
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. 

 

 
This will guide you to building the Counter WristApp source files provided in the WristApp SDK directory. 
 

1.  Installation. You need to do this only once.  Download the WristApp SDK Installer and execute it.  

This will setup the required directories and utilities required to build the WristApp.  This also installs 
the sample application that we will be building in this guide. 
 
The WristApp SDK files are located in the root directory at C:\M851. 
 

2.  Coding the WristApp.  Actually, the sample Counter WristApp is already coded, debugged and 

tested.  The design process from start to finish is detailed in the document “M851 Counter WristApp 
Design Guide.pdf”. 

 

The source files are located in the directory: C:\M851\APP\COUNTER.  Open up file explorer to the 
directory and you will see three directories: header directory (H), source directory (SRC) and the 
build directory (BUILD).  Take a look at the files using your preferred text editor.  Do not make any 
modifications to the files.