PulseOx…

• This project is dedicated to my father, Yo Adrian! (he is the best :-D).
• Notes on the device
• • The CMS-50e sets up a USB serial character device. The character device speaks a very simple protocol.
  • There is basically a 5 byte stream/sequence of data:
  • 1. (128-???) The first byte has and interger value greater than 127, all other values seem to be 7-bit only (ignoring the most significant bit).
    2. (0-127) The next byte is the y-axis for the wave form.
    3. (0-10 ?) Unknown.
    4. (0-127) This byte is the detected heart rate. What is interesting here is that human hearts can easily beat > 127 bpm. So at 128 bpm the device sends a 0, but the device (and my program) adds 128 when displaying the number. There must be a cutoff somewhere (where the 128 stops being added), but I have been unable to detect where (I can't get my heart rate to 200, or <= 40. I have assumed the cutoff is 40…
    5. (0-99) This byte is the detected oxygen saturation.
  • The serial device operates at 19200 baud
• Access the git repo on github
• Building / Running instructions

  $ git clone http://github.com/iphands/PulseOx.git $ cd PulseOx/workspace/PulseOx/ $ mkdir -p jars $ ln -s /path_to_your_swt.jar ./jars/ $ ln -s /path_to_your_log4j.jar ./jars/ $ ant $ java -jar pulseox.jar