diff options
| author | info@mode42.com <info@mode42.com> | 2026-08-08 03:54:55 +0000 |
|---|---|---|
| committer | info@mode42.com <info@mode42.com> | 2026-08-08 03:54:55 +0000 |
| commit | 20cb29c2f8c5c87bc590896854a20b1473ceb358 (patch) | |
| tree | 2857f41513a56ad41af97b57362639298aa7f033 /plugins/ardop/ardop_crc.h | |
#2
Diffstat (limited to 'plugins/ardop/ardop_crc.h')
| -rw-r--r-- | plugins/ardop/ardop_crc.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/plugins/ardop/ardop_crc.h b/plugins/ardop/ardop_crc.h new file mode 100644 index 0000000..69c2f07 --- /dev/null +++ b/plugins/ardop/ardop_crc.h @@ -0,0 +1,15 @@ +#ifndef ARDOP_CRC_H +#define ARDOP_CRC_H + +#include <stddef.h> + +/** ARDOP host/TNC CRC-16 (poly 0x8810, init 0xFFFF) per ARDOPC reference. */ +unsigned int ardop_crc16(const unsigned char *data, unsigned short length); + +/** Non-zero when @p length includes trailing 2-byte CRC that validates. */ +int ardop_crc16_valid(const unsigned char *data, unsigned short length); + +/** Append CRC16 (MSB, LSB) after @p length bytes; returns new length. */ +size_t ardop_crc16_append(unsigned char *data, size_t length, size_t cap); + +#endif /* ARDOP_CRC_H */ |