modnarlluf/rc522-mifare-ndef

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## RC522-MIFARE-NDEF (ESP-IDF component)

C++ component to read Mifare 1k PICC with a RC522 module. 

## Usage

```c++
#include "esp_log.h"
#include "picc.hpp"
#include "rc522_mifare_ndef.hpp"
#include "driver/spi_master.h"
#include "driver/gpio.h"
#include "freertos/FreeRTOS.h"

static const auto *TAG = "MAIN";

extern "C" void app_main(void) {
    spi_bus_config_t buscfg = {};
    buscfg.miso_io_num = GPIO_NUM_4;
    buscfg.mosi_io_num = GPIO_NUM_5;
    buscfg.sclk_io_num = GPIO_NUM_6;
    buscfg.quadwp_io_num = -1;
    buscfg.quadhd_io_num = -1;
    buscfg.max_transfer_sz = 32;

    ESP_ERROR_CHECK(spi_bus_initialize(SPI3_HOST, &buscfg, SPI_DMA_CH_AUTO));

    RC522 rc522 = RC522(SPI3_HOST, GPIO_NUM_7, GPIO_NUM_15, GPIO_NUM_NC);
    rc522.init();

    rc522.antennaOn();
    while (true) {
        auto picc = PiccMifare();

        if (rc522.isNewPiccDetected(picc)) {
            ESP_LOGI(TAG, "New PICC detected");
            rc522.mifareDump(picc);

            ESP_LOGI(TAG, "Data size : %d", picc.getData().size());

            if (picc.isNdefFormatted()) {
                std::vector<NdefRecord> records;
                picc.getNdefRecords(records);

                ESP_LOGI(TAG, "Found %d records", records.size());

                for (NdefRecord &r: records) {
                    ESP_LOGI(TAG, "----------------");
                    ESP_LOGI(TAG, "Record type 0x%02X", r.getType());
                    ESP_LOGI(TAG, "Record type RTD 0x%02X", r.getTypeRtd());
                }
            } else {
                ESP_LOGI(TAG, "Not NDEF formatted");
            }

            vTaskDelay(pdMS_TO_TICKS(1000));
        }

        vTaskDelay(pdMS_TO_TICKS(100));
    }
}
```