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RFID reading now includes RFID data, enabling you to save additional data (still to come...) to the rfid card.

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This commit is contained in:
Fabian Schlenz 2019-11-14 06:48:21 +01:00
parent b32f7d1228
commit 15f6d78128
2 changed files with 78 additions and 57 deletions
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2
include/controller.h
View File

@ -17,6 +17,8 @@ private:
void _check_buttons();
bool _debounce_button(uint8_t index);
uint32_t _get_rfid_card_uid();
String _read_rfid_data();
bool _rfid_present = false;
uint32_t _last_rfid_card_uid = 0;
uint8_t _no_rfid_card_count = 0;
Player* _player;

69
src/controller.cpp
View File

@ -59,11 +59,28 @@ uint32_t Controller::_get_rfid_card_uid() {
}
void Controller::_check_rfid() {
MFRC522::StatusCode status;
if (_rfid_present) {
byte buffer[2];
byte buffer_size = 2;
_spi->select_rc522();
status = _rfid->PICC_WakeupA(buffer, &buffer_size);
if (status == MFRC522::STATUS_OK) {
// Card is still present.
_rfid->PICC_HaltA();
_spi->select_rc522(false);
return;
}
_spi->select_rc522(false);
// Card is now gone
_rfid_present = false;
INFO("No more RFID card.\n");
_player->stop();
} else {
uint32_t uid = _get_rfid_card_uid();
if (uid != _last_rfid_card_uid) {
if (uid > 0) {
_mqtt_client->publish_rfid_uid(uid);
_no_rfid_card_count = 0;
//_no_rfid_card_count = 0;
String temp = String(uid, HEX);
String s_uid = "";
for (int i=0; i<(8-temp.length()); i++) {
@ -71,16 +88,29 @@ void Controller::_check_rfid() {
}
s_uid.concat(temp);
INFO("New RFID card uid: %s\n", s_uid.c_str());
_rfid_present = true;
String data = _read_rfid_data();
_player->play_id(s_uid);
}
}
}
DEBUG("Trying to read RFID data...");
String Controller::_read_rfid_data() {
_spi->select_rc522();
DEBUG("Trying to read RFID data...\n");
String data = "";
MFRC522::MIFARE_Key key;
for (int i=0; i<6; i++) key.keyByte[i]=0xFF;
key.keyByte[0] = 0xD3;
key.keyByte[1] = 0xF7;
key.keyByte[2] = 0xD3;
key.keyByte[3] = 0xF7;
key.keyByte[4] = 0xD3;
key.keyByte[5] = 0xF7;
MFRC522::PICC_Type type = _rfid->PICC_GetType(_rfid->uid.sak);
MFRC522::StatusCode status;
uint8_t sectors = 0;
switch(type) {
case MFRC522::PICC_TYPE_MIFARE_MINI: sectors = 5; break;
@ -89,47 +119,36 @@ void Controller::_check_rfid() {
default: INFO("Unknown PICC type %s\n", String(MFRC522::PICC_GetTypeName(type)).c_str());
}
for (uint8_t sector=0; sector<sectors; sector++) {
for (uint8_t sector=1; sector<sectors; sector++) {
uint8_t blocks = (sector < 32) ? 4 : 16;
uint8_t block_offset = (sector < 32) ? sector * 4 : 128 + (sector - 32) * 16;
MFRC522::StatusCode status;
status = _rfid->PCD_Authenticate(MFRC522::PICC_CMD_MF_AUTH_KEY_A, block_offset, &key, &_rfid->uid);
if (status != MFRC522::STATUS_OK) {
DEBUG("PCD_Authenticate() failed: %s\n", String(_rfid->GetStatusCodeName(status)).c_str());
DEBUG("PCD_Authenticate() for sector %d failed: %s\n", sector, String(_rfid->GetStatusCodeName(status)).c_str());
continue;
}
for (uint8_t block=0; block<blocks-1; block++) {
byte buffer[16];
uint8_t byte_count = 16;
byte buffer[18];
uint8_t byte_count = 18;
status = _rfid->MIFARE_Read(block_offset + block, buffer, &byte_count);
if (status != MFRC522::STATUS_OK) {
DEBUG("MIFARE_Read() failed: %s\n", String(_rfid->GetStatusCodeName(status)).c_str());
continue;
}
for (int i=0; i<16; i++) {
if (buffer[i]!=0x00) data.concat(buffer[i]);
if (buffer[i]>=0x20 && buffer[i]<0x7F) data.concat((char)buffer[i]);
}
}
}
_rfid->PICC_HaltA();
_rfid->PCD_StopCrypto1();
_spi->select_rc522(false);
DEBUG("Data from RFID: %s", data.c_str());
} else {
if (_no_rfid_card_count >= 1) {
INFO("No more RFID card.\n");
_player->stop();
} else {
_no_rfid_card_count++;
return;
}
}
_last_rfid_card_uid = uid;
}
_spi->select_rc522(false);
return data;
}
void Controller::_check_serial() {