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Diffstat (limited to 'firmware/lib/crc8.c')
-rw-r--r-- | firmware/lib/crc8.c | 30 |
1 files changed, 0 insertions, 30 deletions
diff --git a/firmware/lib/crc8.c b/firmware/lib/crc8.c deleted file mode 100644 index 0e38e1eb..00000000 --- a/firmware/lib/crc8.c +++ /dev/null @@ -1,30 +0,0 @@ -/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#include "sysincludes.h" - -#include "crc8.h" - -/** - * Return CRC-8 of the data, using x^8 + x^2 + x + 1 polynomial. A table-based - * algorithm would be faster, but for only a few bytes it isn't worth the code - * size. */ -uint8_t Crc8(const void *vptr, int len) -{ - const uint8_t *data = vptr; - unsigned crc = 0; - int i, j; - - for (j = len; j; j--, data++) { - crc ^= (*data << 8); - for(i = 8; i; i--) { - if (crc & 0x8000) - crc ^= (0x1070 << 3); - crc <<= 1; - } - } - - return (uint8_t)(crc >> 8); -} |