diff options
| author | Stefan Roese <sr@denx.de> | 2016-03-03 09:34:12 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2016-03-14 19:18:42 -0400 |
| commit | ecb57f69b236a0c11a08cbe74d22be76fc72091a (patch) | |
| tree | d3048dfc73116e1d4462d89b10b19766045bc387 /lib | |
| parent | 7109157ff2467b4ba3f745af1a7bc2dc2cf61a39 (diff) | |
lib/crc16.c: Rename cyg_crc16() to crc16_ccitt() and add crc start value
The original name of this function is unclear. This patch renames this
CRC16 function to crc16_ccitt() matching its name with its
implementation.
To make the usage of this function more flexible, lets add the CRC start
value as parameter to this function. This way it can be used by other
functions requiring different start values than 0 as well.
Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/crc16.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/crc16.c b/lib/crc16.c index 57e46f82d9..753b987b02 100644 --- a/lib/crc16.c +++ b/lib/crc16.c @@ -61,12 +61,12 @@ static const uint16_t crc16_tab[] = { 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0, }; -uint16_t cyg_crc16(unsigned char *buf, int len) +uint16_t crc16_ccitt(uint16_t crc_start, unsigned char *buf, int len) { int i; uint16_t cksum; - cksum = 0; + cksum = crc_start; for (i = 0; i < len; i++) cksum = crc16_tab[((cksum>>8) ^ *buf++) & 0xff] ^ (cksum << 8); |