19 lines
534 B
C
19 lines
534 B
C
#include "can_common_declarations.h"
|
|
|
|
uint8_t calculate_checksum(const uint8_t *dat, uint32_t len) {
|
|
uint8_t checksum = 0U;
|
|
for (uint32_t i = 0U; i < len; i++) {
|
|
checksum ^= dat[i];
|
|
}
|
|
return checksum;
|
|
}
|
|
|
|
void can_set_checksum(CANPacket_t *packet) {
|
|
packet->checksum = 0U;
|
|
packet->checksum = calculate_checksum((uint8_t *) packet, CANPACKET_HEAD_SIZE + GET_LEN(packet));
|
|
}
|
|
|
|
bool can_check_checksum(CANPacket_t *packet) {
|
|
return (calculate_checksum((uint8_t *) packet, CANPACKET_HEAD_SIZE + GET_LEN(packet)) == 0U);
|
|
}
|