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AP_Math: rename crc_sum8 to crc_sum8_with_carry 

the name "sum8" is usually used for "sum all bytes into a uint8_t discarding carry"
This commit is contained in:
Peter Barker 2023-11-29 13:02:03 +11:00 committed by Peter Barker
parent 9394a7b26b
commit d34e6049c9
2 changed files with 5 additions and 3 deletions
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2
libraries/AP_Math/crc.cpp
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@ -481,7 +481,7 @@ uint32_t crc_crc24(const uint8_t *bytes, uint16_t len)
}
// simple 8 bit checksum used by FPort
uint8_t crc_sum8(const uint8_t *p, uint8_t len)
uint8_t crc_sum8_with_carry(const uint8_t *p, uint8_t len)
{
uint16_t sum = 0;
for (uint8_t i=0; i<len; i++) {

6
libraries/AP_Math/crc.h
View File

@ -35,8 +35,10 @@ uint32_t crc32_small(uint32_t crc, const uint8_t *buf, uint32_t size);
uint32_t crc_crc24(const uint8_t *bytes, uint16_t len);
uint16_t crc_crc16_ibm(uint16_t crc_accum, uint8_t *data_blk_ptr, uint16_t data_blk_size);
// checksum used by SPORT/FPort
uint8_t crc_sum8(const uint8_t *p, uint8_t len);
// checksum used by SPORT/FPort. For each byte, adds it to a 16-bit
// sum, then adds those two bytes together. Returns the complement of
// the final sum.
uint8_t crc_sum8_with_carry(const uint8_t *p, uint8_t len);
// Copyright (C) 2010 Swift Navigation Inc.
// Contact: Fergus Noble <fergus@swift-nav.com>