Adding ReadMe

2_Firmware/0_LEDs_Blink/ReadMe.md

@@ -0,0 +1,9 @@
+# Blinks LEDs
+
+The card is equipped with two low-power LEDs.
+
+The blue LED functions as a user LED and serves solely as an indicator; for example, it can be illuminated when the card is performing calculations.
+
+The white LED is connected to a branch of the GNSS module, specifically the TIMEPULSE pin. This pin is in a high state when the GNSS module receives satellite signals, thus turning on the LED. However, it can also be controlled by the microcontroller.
+
+Therefore, with this pair of LEDs, it is possible to provide the user with different indications based on the illuminated state of the LEDs.