sascha/esphome
1
0
Fork 0
mirror of https://github.com/esphome/esphome.git synced 2025-04-16 07:40:29 +01:00
Code Issues Releases Wiki Activity

Initial Draft NTAG215 support

Browse Source
This commit is contained in:
Spencer Owen 2024-12-09 19:45:15 -07:00
parent 03ae6b2c1b
commit 4ed1e44081
No known key found for this signature in database
2 changed files with 41 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
esphome/components/nfc/nfc.cpp
View File

@ -31,11 +31,36 @@ std::string format_bytes(std::vector<uint8_t> &bytes) {
return std::string(buf); return std::string(buf);
} }
uint8_t guess_tag_type(uint8_t uid_length) { uint8_t is_ntag(const std::vector<uint8_t> &first_page) {
// NTAG typically has a capability container (CC) starting at byte 3
// The CC for NTAG is usually 0xE1 0x10 followed by a type-specific byte
if (first_page.size() >= 16 && first_page[3] == 0xE1 && first_page[4] == 0x10) {
switch (first_page[5]) {
case 0x11:
return TAG_TYPE_NTAG_213;
case 0x12:
return TAG_TYPE_NTAG_215;
case 0x13:
return TAG_TYPE_NTAG_216;
default:
return TAG_TYPE_UNKNOWN;
}
}
return TAG_TYPE_UNKNOWN;
}
uint8_t guess_tag_type(uint8_t uid_length, const std::vector<uint8_t> &first_page) {
if (uid_length == 4) { if (uid_length == 4) {
return TAG_TYPE_MIFARE_CLASSIC; return TAG_TYPE_MIFARE_CLASSIC;
} else if (uid_length == 7) {
uint8_t ntag_type = is_ntag(first_page);
if (ntag_type != TAG_TYPE_UNKNOWN) {
return ntag_type;
} else {
return TAG_TYPE_2; // Could be MIFARE Ultralight or other Type 2 tag
}
} else { } else {
return TAG_TYPE_2; return TAG_TYPE_UNKNOWN;
} }
} }

15
esphome/components/nfc/nfc.h
View File

@ -28,8 +28,16 @@ static const uint8_t TAG_TYPE_1 = 1;
static const uint8_t TAG_TYPE_2 = 2; static const uint8_t TAG_TYPE_2 = 2;
static const uint8_t TAG_TYPE_3 = 3; static const uint8_t TAG_TYPE_3 = 3;
static const uint8_t TAG_TYPE_4 = 4; static const uint8_t TAG_TYPE_4 = 4;
static const uint8_t TAG_TYPE_NTAG_213 = 5;
static const uint8_t TAG_TYPE_NTAG_215 = 6;
static const uint8_t TAG_TYPE_NTAG_216 = 7;
static const uint8_t TAG_TYPE_UNKNOWN = 99; static const uint8_t TAG_TYPE_UNKNOWN = 99;
static const uint8_t NTAG_PAGE_SIZE = 4;
static const uint8_t NTAG_213_MAX_PAGE = 45; // NTAG213 has 180 bytes of memory (45 pages * 4 bytes per page)
static const uint8_t NTAG_215_MAX_PAGE = 135; // NTAG215 has 540 bytes of memory (135 pages * 4 bytes per page)
static const uint8_t NTAG_216_MAX_PAGE = 231; // NTAG216 has 924 bytes of memory (231 pages * 4 bytes per page)
// Mifare Commands // Mifare Commands
static const uint8_t MIFARE_CMD_AUTH_A = 0x60; static const uint8_t MIFARE_CMD_AUTH_A = 0x60;
static const uint8_t MIFARE_CMD_AUTH_B = 0x61; static const uint8_t MIFARE_CMD_AUTH_B = 0x61;
@ -56,7 +64,8 @@ static const uint8_t MAD_KEY[6] = {0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5};
std::string format_uid(std::vector<uint8_t> &uid); std::string format_uid(std::vector<uint8_t> &uid);
std::string format_bytes(std::vector<uint8_t> &bytes); std::string format_bytes(std::vector<uint8_t> &bytes);
uint8_t guess_tag_type(uint8_t uid_length); // uint8_t guess_tag_type(uint8_t uid_length);//TODO: deprecate guess_tag_type
uint8_t guess_tag_type(uint8_t uid_length, const std::vector<uint8_t> &first_page);
uint8_t get_mifare_classic_ndef_start_index(std::vector<uint8_t> &data); uint8_t get_mifare_classic_ndef_start_index(std::vector<uint8_t> &data);
bool decode_mifare_classic_tlv(std::vector<uint8_t> &data, uint32_t &message_length, uint8_t &message_start_index); bool decode_mifare_classic_tlv(std::vector<uint8_t> &data, uint32_t &message_length, uint8_t &message_start_index);
uint32_t get_mifare_classic_buffer_size(uint32_t message_length); uint32_t get_mifare_classic_buffer_size(uint32_t message_length);
@ -66,6 +75,10 @@ bool mifare_classic_is_trailer_block(uint8_t block_num);
uint32_t get_mifare_ultralight_buffer_size(uint32_t message_length); uint32_t get_mifare_ultralight_buffer_size(uint32_t message_length);
bool is_ntag(const std::vector<uint8_t> &first_page);
uint32_t get_ntag_buffer_size(uint32_t message_length);
bool decode_ntag_tlv(const std::vector<uint8_t> &data, uint32_t &message_length, uint8_t &message_start_index);
class NfcTagListener { class NfcTagListener {
public: public:
virtual void tag_off(NfcTag &tag) {} virtual void tag_off(NfcTag &tag) {}