The raspberry pi is responsible for sending email notification(s) when an alert event is received from the watch.  I booted up a fresh install of Raspbian and created an ~/alerter folder to house my code.

Inside the ~/alerter folder is an alerter.py script that runs at startup to listen for chronos events, and it is based on the following code:

https://web.archive.org/web/20130222052925/http://chemicaloliver.net/programming/receiving-ti-ez430-chronos-button-presses-in-processing-and-python/

When an "S1" button press is received, alerter executes sendalert.py which calls a function in email_handler.py to actually send the email. The recipients are hard-coded in sendalert.py. Email_handler.py uses the smtplib, MIMEMultipart and MIMEText libs to handle sending - more info and instructions can be found here:

https://iotbytes.wordpress.com/programmatically-send-e-mail-from-raspberry-pi-using-python-and-gmail/

I set up a special gmail account for sending the alert emails and the information for that account is stored in a settings.ini file. The destination addresses can be any valid email address... I'm using a destination address from my mobile phone provider that converts the email to sms, so I get a text message when there's an alert.

To run the alerter.py script at startup, I modified the /etc/rc.local file with the following line: python /home/myrpi/alerter/alerter.py

/home/myrpi/alerter/alerter.py