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Daten von RFID-Karten (versuchen zu) lesen.

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This commit is contained in:
Fabian Schlenz 2022-08-21 17:40:22 +02:00
parent 6ddf1efd62
commit 3272921db2
2 changed files with 65 additions and 1 deletions
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3
include/controller.h
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@ -17,7 +17,8 @@ class Controller {
uint8_t button_pressed = 0;
unsigned long button_pressed_since = 0;
bool button_already_processed = false;
String read_rfid_data();
public:
void handle();
void next_track();

63
src/controller.cpp
View File

@ -56,6 +56,9 @@ void Controller::handle_rfid() {
s_uid.concat("0");
}
s_uid.concat(temp);
String data = read_rfid_data();
play(s_uid);
}
rfid->PICC_HaltA();
@ -64,6 +67,66 @@ void Controller::handle_rfid() {
}
}
String Controller::read_rfid_data() {
log_v("read_rfid_data() running...");
static MFRC522::MIFARE_Key keys[8] = {
{{0xd3, 0xf7, 0xd3, 0xf7, 0xd3, 0xf7}}, // D3 F7 D3 F7 D3 F7
{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}}, // FF FF FF FF FF FF = factory default
{{0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5}}, // A0 A1 A2 A3 A4 A5
{{0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5}}, // B0 B1 B2 B3 B4 B5
{{0x4d, 0x3a, 0x99, 0xc3, 0x51, 0xdd}}, // 4D 3A 99 C3 51 DD
{{0x1a, 0x98, 0x2c, 0x7e, 0x45, 0x9a}}, // 1A 98 2C 7E 45 9A
{{0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff}}, // AA BB CC DD EE FF
{{0x00, 0x00, 0x00, 0x00, 0x00, 0x00}} // 00 00 00 00 00 00
};
log_d("Trying to read RFID data...");
String data = "";
MFRC522::PICC_Type type = rfid->PICC_GetType(rfid->uid.sak);
uint8_t sectors = 0;
switch(type) {
case MFRC522Constants::PICC_TYPE_MIFARE_MINI: sectors = 5; break;
case MFRC522Constants::PICC_TYPE_MIFARE_1K: sectors = 16; break;
case MFRC522Constants::PICC_TYPE_MIFARE_4K: sectors = 40; break;
default: log_i("Unknown PICC type %s\n", String(MFRC522Debug::PICC_GetTypeName(type)).c_str());
}
sectors = 2; // Pretend we have only two sectors, so we read only sector #1.
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;
for (int i=0; i<8; i++) {
MFRC522::MIFARE_Key *k = &keys[i];
log_v("Trying MIFARE key %02X %02X %02X %02X %02X %02X...\n", k->keyByte[0], k->keyByte[1], k->keyByte[2], k->keyByte[3], k->keyByte[4], k->keyByte[5]);
status = rfid->PCD_Authenticate(MFRC522Constants::PICC_CMD_MF_AUTH_KEY_A, block_offset, k, &rfid->uid);
if (status == MFRC522Constants::STATUS_OK) {
log_v("Authentication succeeded with key #%d\n", i);
break;
}
}
for (uint8_t block=0; block<blocks-1; block++) {
byte buffer[18];
uint8_t byte_count = 18;
status = rfid->MIFARE_Read(block_offset + block, buffer, &byte_count);
if (status != MFRC522Constants::STATUS_OK) {
log_d("MIFARE_Read() failed: %s\n", String(MFRC522Debug::GetStatusCodeName(status)).c_str());
continue;
}
for (int i=0; i<16; i++) {
if (buffer[i]>=0x20 && buffer[i]<0x7F) data.concat((char)buffer[i]);
}
}
}
//_rfid->PICC_HaltA();
rfid->PCD_StopCrypto1();
log_d("Data from RFID: %s\n", data.c_str());
return data;
}
void Controller::play(String rfid_id) {
if (!rfid_id.equals(current_playlist.get_rfid_id())) {
if (pm->has_playlist(rfid_id)) {