Started work on a raspi

.gitignore

@@ -3,6 +3,7 @@
 __pycache__/
 *.py[cod]
 *$py.class
+checklist.json
 
 # C extensions
 *.so

TODO.md

@@ -1,7 +1,7 @@
 * [x] implement ssb
 * [x] create main.py
 * [x] eat dinner
-* [ ] start working on an actual raspberry pi
+* [x] start working on an actual raspberry pi
 * [ ] get all parts needed
 * [x] calculate the entire cost, so you can boast that it's probably two-three times cheaper than the cheapest QRP out there
 * [ ] write the code for the screen/leds/buttons

main.py

@@ -0,0 +1,17 @@
+import RPi.GPIO as GPIO 
+
+def button_press(pin:int):
+    def button_callback(channel):
+        GPIO.cleanup()
+        return True
+
+    GPIO.setwarnings(False) 
+    GPIO.setmode(GPIO.BOARD) # physical numbers 
+
+    GPIO.setup(pin, GPIO.IN, pull_up_down=GPIO.PUD_DOWN) 
+    GPIO.add_event_detect(pin,GPIO.RISING,callback=button_callback) 
+    GPIO.cleanup()
+    return False
+
+if __name__ == "__main__":
+    print(button_press(19))