I have a php script that fetches from an external sql database and echoes an integer depending on if new data has been found. It runs fine from /mnt/sda1.
I need this script to run every 5 seconds, and I need the Atmega-side to be alerted if there is new data.
My question is how I do this the right (most smooth, fastest) way.
Should I have the Atmega-side running the script in a process and fetch he integer each time? How do I fetch the data here? I only know how to run a process with parameters, but now how to get anything in return.
Can the linux-side run the script and then just alert the Atmega-side when there is new data?