Prior to merge.

[micorpython_ir.git] / ir_tx / philips.py

diff --git a/ir_tx/philips.py b/ir_tx/philips.py
new file mode 100644 (file)
index 0000000..b069361
--- /dev/null
+++ b/ir_tx/philips.py
@@ -0,0 +1,68 @@
+# philips.py Encoder for IR remote control using synchronous code
+# RC-5 and RC-6 mode 0 protocols.
+
+# Author: Peter Hinch
+# Copyright Peter Hinch 2020 Released under the MIT license
+
+from micropython import const
+from sys import platform
+ESP32 = platform == 'esp32' or platform == 'esp32_LoBo'
+from ir_tx import IR
+
+# Philips RC5 protocol
+_T_RC5 = const(889)  # Time for pulse of carrier
+ermsg = 'ESP32 does not support Philips protocols'
+class RC5(IR):
+
+    def __init__(self, pin, freq=36000, verbose=False):
+        if ESP32:
+            raise RuntimeError(ermsg)
+        super().__init__(pin, freq, 28, 30, verbose)
+
+    def tx(self, addr, data, toggle):
+        d = (data & 0x3f) | ((addr & 0x1f) << 6) | ((data & 0x40) << 6) | ((toggle & 1) << 11)
+        self.verbose and print(bin(d))
+        mask = 0x2000
+        while mask:
+            if mask == 0x2000:
+                self.append(_T_RC5)
+            else:
+                bit = bool(d & mask)
+                if bit ^ self.carrier:
+                    self.add(_T_RC5)
+                    self.append(_T_RC5)
+                else:
+                    self.append(_T_RC5, _T_RC5)
+            mask >>= 1
+
+# Philips RC6 mode 0 protocol
+_T_RC6 = const(444)
+_T2_RC6 = const(889)
+
+class RC6_M0(IR):
+
+    def __init__(self, pin, freq=36000, verbose=False):
+        if ESP32:
+            raise RuntimeError(ermsg)
+        super().__init__(pin, freq, 44, 30, verbose)
+
+    def tx(self, addr, data, toggle):
+        # leader, 1, 0, 0, 0
+        self.append(2666, _T2_RC6, _T_RC6, _T2_RC6, _T_RC6, _T_RC6, _T_RC6, _T_RC6, _T_RC6)
+        # Append a single bit of twice duration
+        if toggle:
+            self.add(_T2_RC6)
+            self.append(_T2_RC6)
+        else:
+            self.append(_T2_RC6, _T2_RC6)
+        d = (data & 0xff) | ((addr & 0xff) << 8)
+        mask = 0x8000
+        self.verbose and print('toggle', toggle, self.carrier, bool(d & mask))
+        while mask:
+            bit = bool(d & mask)
+            if bit ^ self.carrier:
+                self.append(_T_RC6, _T_RC6)
+            else:
+                self.add(_T_RC6)
+                self.append(_T_RC6)
+            mask >>= 1