From 4c27cc630008fcbd0981d95673fe06b3458efc60 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Patrick=20Ha=C3=9Fel?= <git@patrick-hassel.de>
Date: Sat, 28 Jun 2025 08:03:41 +0200
Subject: [PATCH] GPIO flash and spots

---
 Fotobox.py | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)

diff --git a/Fotobox.py b/Fotobox.py
index 6197bfc..fdacf2c 100644
--- a/Fotobox.py
+++ b/Fotobox.py
@@ -18,6 +18,67 @@ from config import read, file_increase, iso, now
 from timer import Timer
 from libcamera import Transform
 
+import RPi.GPIO as GPIO
+
+GPIO_LED_BORDER = 7
+GPIO_SPOT_RIGHT = 35
+GPIO_SPOT_LEFT = 37
+GPIO_BUTTON_LED = 36
+GPIO_BUTTON = 38
+
+
+# GPIO helpers
+
+spot_mode = 0
+
+def led_border(state):
+    global GPIO_LED_BORDER
+    GPIO.output(GPIO_LED_BORDER, state)
+
+
+def set_spot_mode(new_mode):
+    global spot_mode
+    spot_mode = new_mode % 4
+    GPIO.output(GPIO_SPOT_LEFT, not (spot_mode & 1))
+    GPIO.output(GPIO_SPOT_RIGHT, not (spot_mode & 2))
+
+
+def next_spot_mode():
+    global spot_mode
+    set_spot_mode(spot_mode + 1)
+
+
+# user interface
+
+def button_press(gpio_id):
+    next_spot_mode()
+
+
+# INIT GPIO
+GPIO.setmode(GPIO.BOARD)
+GPIO.setwarnings(False)
+
+GPIO.setup(GPIO_SPOT_RIGHT, GPIO.OUT, initial=GPIO.HIGH)
+GPIO.setup(GPIO_SPOT_LEFT, GPIO.OUT, initial=GPIO.HIGH)
+GPIO.setup(GPIO_LED_BORDER, GPIO.OUT, initial=GPIO.LOW)
+GPIO.setup(GPIO_BUTTON_LED, GPIO.OUT, initial=GPIO.LOW)
+
+GPIO.setup(GPIO_BUTTON, GPIO.IN)
+GPIO.add_event_detect(GPIO_BUTTON, GPIO.FALLING, button_press, bouncetime=300)
+
+led_border(False)
+time.sleep(0.02)
+led_border(True)
+time.sleep(0.02)
+led_border(False)
+time.sleep(0.02)
+led_border(True)
+time.sleep(0.02)
+led_border(False)
+time.sleep(0.02)
+led_border(True)
+time.sleep(0.02)
+led_border(False)
 
 class State(Enum):
     IDLE = 0
@@ -207,6 +268,7 @@ class Fotobox:
         print(new_state)
         self._state = new_state
         if new_state == State.COUNTDOWN:
+            led_border(True)
             self._countdown_timer.restart()
         elif new_state == State.SHOOTING:
             self._photos = []
@@ -215,6 +277,7 @@ class Fotobox:
             print("Starting shooting: S%04d-%s" % (self._shooting_number, iso(self._shooting_datetime)))
             self._shooting_timer.restart()
         elif new_state == State.PREPARE:
+            led_border(False)
             screen.fill((0, 0, 0))
             screen.blit(LOADING_SURFACE, LOADING_RECT)
             pygame.display.flip()
@@ -275,3 +338,4 @@ class Fotobox:
           os.chmod(upload, 0o777)
         print("Photo saved: %s" % path.absolute())
         
+