From 1a533f01992659b56d0fa0d52422b1b796897516 Mon Sep 17 00:00:00 2001
From: Jim Tannenbaum <jetannenbaum@gmail.com>
Date: Tue, 14 Dec 2021 11:37:23 -0500
Subject: [PATCH] Add files via upload

Added file to decode samsung tv remotes.
---
 ir_rx/samsung.py | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 ir_rx/samsung.py

diff --git a/ir_rx/samsung.py b/ir_rx/samsung.py
new file mode 100644
index 0000000..382dcbf
--- /dev/null
+++ b/ir_rx/samsung.py
@@ -0,0 +1,37 @@
+# samsung.py Decoder for IR remote control using synchronous code
+# Supports Samsung TV remote protocols.
+
+# Author: J.E. Tannenbaum
+# Copyright J.E.Tannenbaum 2021 Released under the MIT license
+
+from utime import ticks_us, ticks_diff
+from ir_rx import IR_RX
+
+class SAMSUNG(IR_RX):
+    def __init__(self, pin, callback, *args):
+        super().__init__(pin, 68, 80, callback, *args)
+
+    def decode(self, _):
+        def near(v, target):
+            return target * 0.8 < v < target * 1.2
+
+        lb = self.edge - 1  # Possible length of burst
+        burst = []
+        for x in range(lb):
+            dt = ticks_diff(self._times[x + 1], self._times[x])
+            if x > 0 and dt > 10000:  # Reached gap between repeats
+                break
+            burst.append(dt)
+
+        lb = len(burst)  # Actual length
+        cmd = 0
+        if near(burst[0], 4500) and near(burst[1], 4500) and lb == 67:
+            # Skip the starting bits and the checksum at the end of the sequence
+            for x in range(2, lb - 1, 2):
+                cmd *= 2
+                # Test for logical 1 (One byte low, next byte high)
+                if burst[x] < 1000 and burst[x + 1] > 1000:
+                    cmd += 1
+
+        # Set up for new data burst and run user callback
+        self.do_callback(cmd, 0, 0)
-- 
2.47.3