1 files changed, 0 insertions, 79 deletions
diff --git a/gm_platform/fw/crctest.py b/gm_platform/fw/crctest.py
deleted file mode 100644
index 5c97be9..0000000
--- a/gm_platform/fw/crctest.py
+++ /dev/null
@@ -1,79 +0,0 @@
-custom_crc_table = {}
-
-def generate_crc32_table(_poly):
-
-    global custom_crc_table
-
-    for i in range(256):
-        c = i << 24
-
-        for j in range(8):
-            c = (c << 1) ^ _poly if (c & 0x80000000) else c << 1
-
-        custom_crc_table[i] = c & 0xffffffff
-
-
-def crc32_stm(bytes_arr):
-
-    length = len(bytes_arr)
-    crc = 0xffffffff
-
-    k = 0
-    while length >= 4:
-
-        v = ((bytes_arr[k] << 24) & 0xFF000000) | ((bytes_arr[k+1] << 16) & 0xFF0000) | \
-        ((bytes_arr[k+2] << 8) & 0xFF00) | (bytes_arr[k+3] & 0xFF)
-
-        crc = ((crc << 8) & 0xffffffff) ^ custom_crc_table[0xFF & ((crc >> 24) ^ v)]
-        crc = ((crc << 8) & 0xffffffff) ^ custom_crc_table[0xFF & ((crc >> 24) ^ (v >> 8))]
-        crc = ((crc << 8) & 0xffffffff) ^ custom_crc_table[0xFF & ((crc >> 24) ^ (v >> 16))]
-        crc = ((crc << 8) & 0xffffffff) ^ custom_crc_table[0xFF & ((crc >> 24) ^ (v >> 24))]
-
-        k += 4
-        length -= 4
-
-    if length > 0:
-        v = 0
-
-        for i in range(length):
-            v |= (bytes_arr[k+i] << 24-i*8)
-
-        if length == 1:
-            v &= 0xFF000000
-
-        elif length == 2:
-            v &= 0xFFFF0000
-
-        elif length == 3:
-            v &= 0xFFFFFF00
-
-        crc = (( crc << 8 ) & 0xffffffff) ^ custom_crc_table[0xFF & ( (crc >> 24) ^ (v ) )];
-        crc = (( crc << 8 ) & 0xffffffff) ^ custom_crc_table[0xFF & ( (crc >> 24) ^ (v >> 8) )];
-        crc = (( crc << 8 ) & 0xffffffff) ^ custom_crc_table[0xFF & ( (crc >> 24) ^ (v >> 16) )];
-        crc = (( crc << 8 ) & 0xffffffff) ^ custom_crc_table[0xFF & ( (crc >> 24) ^ (v >> 24) )];
-
-    return crc
-
-poly = 0x04C11DB7
-buf = bytes(reversed([1, 2, 3, 4]))
-
-generate_crc32_table(poly)
-print(hex(crc32_stm(bytearray(buf))))
-
-from crccheck import crc
-import struct
-
-def rev_bits_in_word(w):
-    return sum( ((w>>i)&1) << (31-i) for i in range(32) )
-
-import zlib
-def crc32stm(inbytes):    
-    crc32 = crc.Crc32.calc(inbytes)^0xffffffff
-    #crc32 = zlib.crc32(inbytes)^0xffffffff
-    crc32 = rev_bits_in_word(crc32)
-    return crc32
-
-#data = [0x80,0x40,0xc0,0x20]
-data = [0x00, 0, 0, 0x80, 0, 0, 0, 0x80]
-print(hex(crc32stm(bytes(data))))
-print(hex(zlib.crc32(bytes([0, 0, 0, 1]))^0xffffffff))