d31578508a
* digital signal: introduce digital signal * nfca: add nfca signal encoder * nfc: add mifare classic emulation scene * nfca: add classic emulation support to lib and hal * mifare classic: support basic read commands * nfc: add mifare classic menu scene * mifare classic: start parsing commands in emulation * mifare classic: add nested auth * nfc: fix errors * mifare classic: add encrypt function * nfc: fix mifare classic save * lib hex: add hex uint64_t ASCII parser * flipper format: add uint64 hex format support * nfc: add mifare classic key map * nfc: hide mifare classic keys on emulation * mifare classic: add NACK responce * nfc: add partial bytes support in transparent mode * nfc: mifare classic add shadow file support * digital signal: move arr buffer from BSS to heap * mifare classic: process access bits more careful * nfca: fix memory leack * nfc: format sources * mifare classic: cleun up Co-authored-by: あく <alleteam@gmail.com>
40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
#include "hex.h"
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bool hex_char_to_hex_nibble(char c, uint8_t* nibble) {
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if((c >= '0' && c <= '9') || (c >= 'A' && c <= 'F') || (c >= 'a' && c <= 'f')) {
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if((c >= '0' && c <= '9')) {
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*nibble = c - '0';
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} else if((c >= 'A' && c <= 'F')) {
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*nibble = c - 'A' + 10;
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} else {
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*nibble = c - 'a' + 10;
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}
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return true;
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} else {
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return false;
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}
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}
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bool hex_chars_to_uint8(char hi, char low, uint8_t* value) {
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uint8_t hi_nibble_value, low_nibble_value;
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if(hex_char_to_hex_nibble(hi, &hi_nibble_value) &&
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hex_char_to_hex_nibble(low, &low_nibble_value)) {
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*value = (hi_nibble_value << 4) | low_nibble_value;
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return true;
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} else {
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return false;
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}
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}
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bool hex_chars_to_uint64(const char* value_str, uint64_t* value) {
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uint8_t* _value = (uint8_t*)value;
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bool parse_success = false;
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for(uint8_t i = 0; i < 8; i++) {
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parse_success = hex_chars_to_uint8(value_str[i * 2], value_str[i * 2 + 1], &_value[7 - i]);
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if(!parse_success) break;
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}
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return parse_success;
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}
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