LDPC decoder fully working

1 files changed, 27 insertions, 8 deletions

diff --git a/controller/fw/ldpc_decoder_test.py b/controller/fw/ldpc_decoder_test.py
index d5cbb24..3b91bba 100644
--- a/controller/fw/ldpc_decoder_test.py
+++ b/controller/fw/ldpc_decoder_test.py
@@ -16,8 +16,8 @@ args = parser.parse_args()
 
 lib = C.CDLL('./ldpc_decoder_test.so')
 
-n = 384
-nodes, bits = 6, 8
+n = 5*19
+nodes, bits = 17, 19
 H, G = pyldpc.make_ldpc(n, nodes, bits, systematic=False, seed=0)
 _1, bits_pos, _2 = scipy.sparse.find(H)
 _, k = G.shape
@@ -26,18 +26,23 @@ st = np.random.RandomState(seed=0)
 test_data = st.randint(0, 2, k)
 d = np.dot(G, test_data) % 2
 x = (-1) ** d
+x[29:] = 0
 
 bits_pos = bits_pos.astype(np.uint32)
 x = x.astype(np.int8)
 
 lib.decode.argtypes = [C.c_size_t, C.c_size_t, C.c_size_t, C.POINTER(C.c_size_t), C.POINTER(C.c_int8), C.POINTER(C.c_int8), C.c_uint]
+lib.get_message.argtypes = [C.c_size_t, C.c_size_t, C.POINTER(C.c_int8), C.POINTER(C.c_int8), C.POINTER(C.c_int8)]
 
 if args.reference:
     ref_out = test_decoder.decode(H, x, 3)
     print('decoder output:', ref_out, flush=True)
-    print('msg reconstruction:', pyldpc.get_message(G, ref_out))
-    print('reference decoder: ', np.all(np.equal(pyldpc.get_message(G, ref_out), test_data)), flush=True)
-    print(ref_out.dtype)
+    print('msg reconstruction:', test_decoder.get_message(G, ref_out))
+    print('reference decoder: ', np.all(np.equal(test_decoder.get_message(G, ref_out), test_data)), flush=True)
+    np.set_printoptions(linewidth=220)
+    print(test_data)
+    print(test_decoder.get_message(G, ref_out))
+    print(test_decoder.get_message(G, ref_out) ^ test_data)
 
 else:
     out = np.zeros(n, dtype=np.uint8)
@@ -48,6 +53,20 @@ else:
         out.ctypes.data_as(C.POINTER(C.c_int8)),
         25), flush=True)
     print('decoder output:', out)
-    print('msg reconstruction:', pyldpc.get_message(G, out))
-    print('decoder under test:', np.all(np.equal(pyldpc.get_message(G, out.astype(np.int64)), test_data)))
-    print(out.dtype)
+    print('msg reconstruction:', test_decoder.get_message(G, out.astype(np.int64)))
+    print('decoder under test:', np.all(np.equal(test_decoder.get_message(G, out.astype(np.int64)), test_data)))
+    np.set_printoptions(linewidth=220)
+    print(test_data)
+    print(test_decoder.get_message(G, out.astype(np.int64)))
+    G = G.astype(np.int8)
+    msg = np.zeros(k, dtype=np.int8)
+    lib.get_message(
+            n, k,
+            G.ctypes.data_as(C.POINTER(C.c_int8)),
+            out.astype(np.int8).ctypes.data_as(C.POINTER(C.c_int8)),
+            msg.ctypes.data_as(C.POINTER(C.c_int8)))
+    print(msg)
+    print(msg ^ test_data)
+
+print('codeword length:', len(x))
+print('data length:', len(test_data))