Prior to merge.

[micorpython_ir.git] / ir_tx / sony.py

diff --git a/ir_tx/sony.py b/ir_tx/sony.py
new file mode 100644 (file)
index 0000000..86a23dd
--- /dev/null
+++ b/ir_tx/sony.py
@@ -0,0 +1,45 @@
+# sony.py Encoder for IR remote control using synchronous code
+# Sony SIRC protocol.
+
+# Author: Peter Hinch
+# Copyright Peter Hinch 2020 Released under the MIT license
+
+from micropython import const
+from ir_tx import IR
+
+class SONY_ABC(IR):
+
+    def __init__(self, pin, bits, freq, verbose):
+        super().__init__(pin, freq, 3 + bits * 2, 30, verbose)
+        if bits not in (12, 15, 20):
+            raise ValueError('bits must be 12, 15 or 20.')
+        self.bits = bits
+
+    def tx(self, addr, data, ext):
+        self.append(2400, 600)
+        bits = self.bits
+        v = data & 0x7f
+        if bits == 12:
+            v |= (addr & 0x1f) << 7
+        elif bits == 15:
+            v |= (addr & 0xff) << 7
+        else:
+            v |= (addr & 0x1f) << 7
+            v |= (ext & 0xff) << 12
+        for _ in range(bits):
+            self.append(1200 if v & 1 else 600, 600)
+            v >>= 1
+
+# Sony specifies 40KHz
+class SONY_12(SONY_ABC):
+    def __init__(self, pin, freq=40000, verbose=False):
+        super().__init__(pin, 12, freq, verbose)
+
+class SONY_15(SONY_ABC):
+    def __init__(self, pin, freq=40000, verbose=False):
+        super().__init__(pin, 15, freq, verbose)
+
+class SONY_20(SONY_ABC):
+    def __init__(self, pin, freq=40000, verbose=False):
+        super().__init__(pin, 20, freq, verbose)
+