In need of help, i have a webserver . 4 buttons , 3 inputs and would like to print text to it.
MY problem as, a complete novice is i cannot see any example of how to send text rs232 into pin rx pin and have it printed out on the web page. THESE text will be no more than 4 lines of 16 characters. Example rx pin would receive "door open" and this would be on the web page. Can anyone help
I think your best best would be to write a php script using the php_serial class to read the serial data from the device and store it as a variable and then display text based on the value of the variable on the webpage.
I think if you search php_serial you'll probably find examples that exist.
Just some things to keep in mind:
- Do you want the webpage to "read" the serial data everytime the webpage is reloaded, or only when another event happens?
- Everytime you "read" the serial data the device will reset, so either add a delay to the script or use a capacitor between the reset pin and ground.
- If you don't already have php running, get that running first.
Hope this helps a little.
Hans