From bd96ca95a6c8c0993c9dfca02554e35e66c0903d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nicol=C3=B2=20Balzarotti?= <nicolo.balzarotti@iit.it>
Date: Thu, 5 Jan 2023 15:47:31 +0100
Subject: [PATCH] fix gpio read

---
 sensors.py | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/sensors.py b/sensors.py
index 77f9320..fa82233 100644
--- a/sensors.py
+++ b/sensors.py
@@ -28,9 +28,17 @@ class GPIOState(Sensor):
     def __init__(self, pin, transform=lambda x: 1-x):
         self.pin = pin
         self.transform = transform
+        
+        self.value = GPIO.input(self.pin)
+        self.update_time()
+
+    def update_time(self):
+        self.time = perf_counter()
 
     def read(self):
-        return self.transform(GPIO.input(self.pin))
+        self.value = GPIO.input(self.pin)
+        
+        return (self.time, self.transform(self.value))
 
 class Temperature1W(Sensor):
     def __init__(self, address):