unleashed-firmware/lib/nfc_protocols/nfc_util.c
hedger 4d6b170769
[FL-2520] FW build with -Wextra (#1185)
* Fixing compiler warnings with -Wextra
* More warnings suppression, WIP
* Even more warning fixes
* Added new lines at end of text files.
* Padding fix
* Additional fixes to warnings on different build configurations; added -Wextra to default build pipeline
* Fixes for Secplus v1
* -additional warnings
* +-Wredundant-decls fixes
* FuriHal: print stack overflow task name in console
* FuriHal: add missing include

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>
2022-05-06 16:37:10 +03:00

48 lines
1.6 KiB
C

#include "nfc_util.h"
#include <furi.h>
static const uint8_t nfc_util_odd_byte_parity[256] = {
1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0,
1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1,
1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1,
0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0,
1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 1,
0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0,
0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1,
0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1};
void nfc_util_num2bytes(uint64_t src, uint8_t len, uint8_t* dest) {
furi_assert(dest);
furi_assert(len <= 8);
while(len--) {
dest[len] = (uint8_t)src;
src >>= 8;
}
}
uint64_t nfc_util_bytes2num(uint8_t* src, uint8_t len) {
furi_assert(src);
furi_assert(len <= 8);
uint64_t res = 0;
while(len--) {
res = (res << 8) | (*src);
src++;
}
return res;
}
uint8_t nfc_util_even_parity32(uint32_t data) {
// data ^= data >> 16;
// data ^= data >> 8;
// return !nfc_util_odd_byte_parity[data];
return (__builtin_parity(data) & 0xFF);
}
uint8_t nfc_util_odd_parity8(uint8_t data) {
return nfc_util_odd_byte_parity[data];
}