mirrors/flipperzero-firmware
1
Fork 0
mirror of https://github.com/flipperdevices/flipperzero-firmware.git synced 2025-12-12 04:41:26 +04:00
Code Issues Activity

nfc_util: little endian bytes2num functions added (#3287)

Browse Source 
* nfc_util_bytes2num_little_endian function added
* f18 target api version sync
* Bump api version

Co-authored-by: hedger <hedger@users.noreply.github.com>
Co-authored-by: あく <alleteam@gmail.com>
This commit is contained in:
Leptopt1los
2023-12-16 02:05:16 +09:00
committed by GitHub
parent 0af74fb755
commit 36aecfbec9
4 changed files with 18 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
lib/nfc/helpers/nfc_util.c
View File

@@ -35,6 +35,19 @@ uint64_t nfc_util_bytes2num(const uint8_t* src, uint8_t len) {
return res;
}
uint64_t nfc_util_bytes2num_little_endian(const uint8_t* src, uint8_t len) {
furi_assert(src);
furi_assert(len <= 8);
uint64_t res = 0;
uint8_t shift = 0;
while(len--) {
res |= *src << (8 * shift++);
src++;
}
return res;
}
uint8_t nfc_util_even_parity32(uint32_t data) {
// data ^= data >> 16;
// data ^= data >> 8;

2
lib/nfc/helpers/nfc_util.h
View File

@@ -10,6 +10,8 @@ void nfc_util_num2bytes(uint64_t src, uint8_t len, uint8_t* dest);
uint64_t nfc_util_bytes2num(const uint8_t* src, uint8_t len);
uint64_t nfc_util_bytes2num_little_endian(const uint8_t* src, uint8_t len);
uint8_t nfc_util_even_parity32(uint32_t data);
uint8_t nfc_util_odd_parity8(uint8_t data);