π² What the Code Does
- Initialization (setup):
Begins serial communication for GSM and GPS modules.
Configures the GSM module to send SMS in text mode.
Sets up input (button) and output (buzzer) pins.
- Main Loop (loop):
Continuously listens to the GPS module for updated location data.
Monitors the button press.
- When the Button is Pressed:
GPS location (latitude and longitude) is read.
An SMS is sent to a predefined phone number (phone_no) with:
Latitude and longitude
A Google Maps link showing the location
Buzzer sounds for 1 second after successful SMS.
- SMS Send Prevention:
A flag (isSMSsent) ensures the SMS is sent only once per press to avoid spamming.