mirror of
https://github.com/m5stack/M5Unit-NFC.git
synced 2026-05-20 11:48:34 -07:00
372 lines
15 KiB
C++
372 lines
15 KiB
C++
/*
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* SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD
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*
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* SPDX-License-Identifier: MIT
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*/
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/*
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Example using M5UnitUnified for M5Unit-NFC/RFID
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Read/write NDEF NFC-A PICC
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This example is shared with M5Unit-RFID
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*/
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#include <M5Unified.h>
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#include <M5UnitUnified.h>
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#include <M5UnitUnifiedNFC.h>
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#include <M5Utility.h>
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#include <Wire.h>
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#include <algorithm>
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#include <vector>
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// *************************************************************
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// Choose ONE define symbol to match the unit/board you are using
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// *************************************************************
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#if !defined(USING_UNIT_NFC) && !defined(USING_CAP_CC1101) && !defined(USING_UNIT_RFID2) && \
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!defined(USING_M5DIAL_BUILTIN_WS1850S)
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// For UnitNFC (ST25R3916, I2C)
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// #define USING_UNIT_NFC
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// For CapCC1101NFC (ST25R3916, SPI)
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// #define USING_CAP_CC1101
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// For UnitRFID2 (WS1850S external, I2C GROVE)
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// #define USING_UNIT_RFID2
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// For M5Dial Builtin WS1850S (internal I2C)
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// #define USING_M5DIAL_BUILTIN_WS1850S
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#endif
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#if defined(USING_UNIT_RFID2) || defined(USING_M5DIAL_BUILTIN_WS1850S)
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#include <M5UnitUnifiedRFID.h>
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#endif
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using namespace m5::nfc;
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using namespace m5::nfc::a;
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using namespace m5::nfc::a::mifare;
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using namespace m5::nfc::ndef;
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namespace {
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auto& lcd = M5.Display;
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m5::unit::UnitUnified Units;
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#if defined(USING_UNIT_NFC)
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#pragma message "Choose UnitNFC"
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m5::unit::UnitNFC unit{}; // I2C
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#elif defined(USING_CAP_CC1101)
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#pragma message "Choose CapCC1101NFC"
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m5::unit::CapCC1101NFC unit{}; // CapCC1101 (SPI)
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#elif defined(USING_UNIT_RFID2)
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#pragma message "Choose UnitRFID2"
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m5::unit::UnitRFID2 unit{}; // UnitRFID2 external (M5Unit-RFID, GROVE)
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#elif defined(USING_M5DIAL_BUILTIN_WS1850S)
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#pragma message "Choose UnitRFID2 (M5Dial Builtin)"
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m5::unit::UnitRFID2 unit{}; // M5Dial builtin WS1850S (internal I2C)
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#else
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#error Choose ONE: USING_UNIT_NFC / USING_CAP_CC1101 / USING_UNIT_RFID2 / USING_M5DIAL_BUILTIN_WS1850S
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#endif
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m5::nfc::NFCLayerA nfc_a{unit};
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// PNG image binary
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constexpr uint8_t poji_64_png[] = {
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0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d, 0x49, 0x48, 0x44, 0x52, 0x00, 0x00, 0x00,
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0x40, 0x00, 0x00, 0x00, 0x40, 0x01, 0x00, 0x00, 0x00, 0x00, 0x82, 0x12, 0x4c, 0x73, 0x00, 0x00, 0x00, 0x02, 0x62,
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0x4b, 0x47, 0x44, 0x00, 0x01, 0xdd, 0x8a, 0x13, 0xa4, 0x00, 0x00, 0x00, 0x09, 0x70, 0x48, 0x59, 0x73, 0x00, 0x00,
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0x00, 0x48, 0x00, 0x00, 0x00, 0x48, 0x00, 0x46, 0xc9, 0x6b, 0x3e, 0x00, 0x00, 0x00, 0x07, 0x74, 0x49, 0x4d, 0x45,
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0x07, 0xe8, 0x0b, 0x16, 0x08, 0x12, 0x36, 0x8d, 0x3c, 0xbe, 0xef, 0x00, 0x00, 0x00, 0x77, 0x74, 0x45, 0x58, 0x74,
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0x52, 0x61, 0x77, 0x20, 0x70, 0x72, 0x6f, 0x66, 0x69, 0x6c, 0x65, 0x20, 0x74, 0x79, 0x70, 0x65, 0x20, 0x38, 0x62,
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0x69, 0x6d, 0x00, 0x0a, 0x38, 0x62, 0x69, 0x6d, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x34, 0x30, 0x0a, 0x33,
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0x38, 0x34, 0x32, 0x34, 0x39, 0x34, 0x64, 0x30, 0x34, 0x30, 0x34, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30,
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0x30, 0x30, 0x30, 0x30, 0x33, 0x38, 0x34, 0x32, 0x34, 0x39, 0x34, 0x64, 0x30, 0x34, 0x32, 0x35, 0x30, 0x30, 0x30,
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0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x31, 0x30, 0x64, 0x34, 0x31, 0x64, 0x38, 0x63, 0x64, 0x39, 0x38, 0x66,
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0x30, 0x30, 0x62, 0x32, 0x30, 0x34, 0x65, 0x39, 0x38, 0x30, 0x30, 0x39, 0x39, 0x38, 0x0a, 0x65, 0x63, 0x66, 0x38,
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0x34, 0x32, 0x37, 0x65, 0x0a, 0xa6, 0x53, 0xc3, 0x8e, 0x00, 0x00, 0x00, 0x01, 0x6f, 0x72, 0x4e, 0x54, 0x01, 0xcf,
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0xa2, 0x77, 0x9a, 0x00, 0x00, 0x00, 0x6e, 0x49, 0x44, 0x41, 0x54, 0x28, 0xcf, 0x63, 0xf8, 0x0f, 0x05, 0x0c, 0xc3,
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0x98, 0xf1, 0x43, 0x1e, 0xcc, 0xf8, 0xbc, 0xf7, 0xf3, 0xf9, 0xbd, 0xe7, 0x81, 0x8c, 0xef, 0x36, 0xef, 0x81, 0x08,
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0xc8, 0x78, 0xc2, 0x71, 0xfe, 0xb3, 0x80, 0x3a, 0x90, 0xf1, 0x4e, 0x22, 0xfe, 0x97, 0x44, 0x39, 0x90, 0xf1, 0x5e,
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0x28, 0xfe, 0x97, 0xc7, 0x67, 0x20, 0xe3, 0x5c, 0xfc, 0xfc, 0x9f, 0xbf, 0x8a, 0x81, 0x8c, 0xf3, 0xff, 0xef, 0xff,
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0xfe, 0xff, 0x19, 0x99, 0xf1, 0xfe, 0xff, 0xfb, 0xef, 0xff, 0xbf, 0x03, 0x19, 0xcf, 0xff, 0x7f, 0x7f, 0x0f, 0x24,
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0x40, 0x0c, 0xa0, 0x15, 0x20, 0xc6, 0x67, 0x90, 0x95, 0x20, 0x2b, 0x7e, 0x83, 0x18, 0xf7, 0x07, 0x81, 0xdf, 0x69,
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0xcc, 0x00, 0x00, 0x17, 0xc5, 0xed, 0x7a, 0x25, 0x80, 0xdc, 0xb3, 0x00, 0x00, 0x00, 0x50, 0x65, 0x58, 0x49, 0x66,
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0x4d, 0x4d, 0x00, 0x2a, 0x00, 0x00, 0x00, 0x08, 0x00, 0x02, 0x01, 0x12, 0x00, 0x03, 0x00, 0x00, 0x00, 0x01, 0x00,
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0x01, 0x00, 0x00, 0x87, 0x69, 0x00, 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x26, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x03, 0xa0, 0x01, 0x00, 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0xa0, 0x02, 0x00, 0x04, 0x00,
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0x00, 0x00, 0x01, 0x00, 0x00, 0x02, 0x00, 0xa0, 0x03, 0x00, 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x02, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x19, 0x25, 0x9b, 0x9b, 0x00, 0x00, 0x00, 0x25, 0x74, 0x45, 0x58, 0x74, 0x64, 0x61, 0x74,
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0x65, 0x3a, 0x63, 0x72, 0x65, 0x61, 0x74, 0x65, 0x00, 0x32, 0x30, 0x32, 0x34, 0x2d, 0x31, 0x31, 0x2d, 0x32, 0x32,
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0x54, 0x30, 0x38, 0x3a, 0x31, 0x35, 0x3a, 0x32, 0x31, 0x2b, 0x30, 0x30, 0x3a, 0x30, 0x30, 0x28, 0xd2, 0x30, 0x68,
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0x00, 0x00, 0x00, 0x25, 0x74, 0x45, 0x58, 0x74, 0x64, 0x61, 0x74, 0x65, 0x3a, 0x6d, 0x6f, 0x64, 0x69, 0x66, 0x79,
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0x00, 0x32, 0x30, 0x32, 0x33, 0x2d, 0x30, 0x34, 0x2d, 0x32, 0x38, 0x54, 0x30, 0x36, 0x3a, 0x35, 0x32, 0x3a, 0x32,
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0x35, 0x2b, 0x30, 0x30, 0x3a, 0x30, 0x30, 0xcf, 0xa4, 0xfa, 0x1c, 0x00, 0x00, 0x00, 0x28, 0x74, 0x45, 0x58, 0x74,
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0x64, 0x61, 0x74, 0x65, 0x3a, 0x74, 0x69, 0x6d, 0x65, 0x73, 0x74, 0x61, 0x6d, 0x70, 0x00, 0x32, 0x30, 0x32, 0x34,
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0x2d, 0x31, 0x31, 0x2d, 0x32, 0x32, 0x54, 0x30, 0x38, 0x3a, 0x31, 0x38, 0x3a, 0x35, 0x34, 0x2b, 0x30, 0x30, 0x3a,
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0x30, 0x30, 0xa3, 0x99, 0x04, 0x05, 0x00, 0x00, 0x00, 0x11, 0x74, 0x45, 0x58, 0x74, 0x65, 0x78, 0x69, 0x66, 0x3a,
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0x43, 0x6f, 0x6c, 0x6f, 0x72, 0x53, 0x70, 0x61, 0x63, 0x65, 0x00, 0x31, 0x0f, 0x9b, 0x02, 0x49, 0x00, 0x00, 0x00,
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0x12, 0x74, 0x45, 0x58, 0x74, 0x65, 0x78, 0x69, 0x66, 0x3a, 0x45, 0x78, 0x69, 0x66, 0x4f, 0x66, 0x66, 0x73, 0x65,
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0x74, 0x00, 0x33, 0x38, 0xad, 0xb8, 0xbe, 0x23, 0x00, 0x00, 0x00, 0x18, 0x74, 0x45, 0x58, 0x74, 0x65, 0x78, 0x69,
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0x66, 0x3a, 0x50, 0x69, 0x78, 0x65, 0x6c, 0x58, 0x44, 0x69, 0x6d, 0x65, 0x6e, 0x73, 0x69, 0x6f, 0x6e, 0x00, 0x35,
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0x31, 0x32, 0xb6, 0x2e, 0xb8, 0xdc, 0x00, 0x00, 0x00, 0x18, 0x74, 0x45, 0x58, 0x74, 0x65, 0x78, 0x69, 0x66, 0x3a,
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0x50, 0x69, 0x78, 0x65, 0x6c, 0x59, 0x44, 0x69, 0x6d, 0x65, 0x6e, 0x73, 0x69, 0x6f, 0x6e, 0x00, 0x35, 0x31, 0x32,
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0x2b, 0x21, 0x59, 0xaa, 0x00, 0x00, 0x00, 0x00, 0x49, 0x45, 0x4e, 0x44, 0xae, 0x42, 0x60, 0x82};
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constexpr uint32_t poji_64_png_len = 738;
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void format_desfire()
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{
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auto& picc = nfc_a.activatedPICC();
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if (picc.isMifareDESFire()) {
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desfire::DESFireFileSystem dfs(nfc_a);
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if (picc.type == Type::MIFARE_DESFire_Light) {
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M5_LOGW("DESFire light can NOT format");
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return;
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} else {
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if (!dfs.formatPICC(desfire::DESFIRE_DEFAULT_KEY)) {
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M5_LOGE("Failed to formatPICC");
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return;
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}
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uint32_t free_size{};
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if (dfs.selectApplication() && dfs.getFreeMemory(free_size)) {
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M5_LOGI("free(picc):%u", free_size);
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}
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}
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}
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}
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void read_ndef()
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{
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// auto& picc = nfc_a.activatedPICC();
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// Disable non-test NDEF read path; keep only the current debug logging.
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bool valid{};
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if (!nfc_a.ndefIsValidFormat(valid)) {
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M5_LOGE("Failed to ndefIsValidFormat");
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lcd.fillScreen(TFT_RED);
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return;
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}
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if (!valid) {
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M5.Log.printf("Data format is NOT NDEF\n");
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return;
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}
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TLV msg{};
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// Read NDEF message TLV
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if (!nfc_a.ndefRead(msg)) {
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M5_LOGE("Failed to read");
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lcd.fillScreen(TFT_RED);
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return;
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}
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// If it does not exist, a Null TLV is returned
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if (msg.isMessageTLV()) {
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lcd.setCursor(0, lcd.fontHeight());
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for (auto&& r : msg.records()) {
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switch (r.tnf()) {
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case TNF::Wellknown: {
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const auto payload = r.payloadAsString();
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M5.Log.printf("SZ:%3u TNF:%u T:%s [%s]\n", r.payloadSize(), r.tnf(), r.type(), payload.c_str());
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lcd.printf("T:%s [%s]\n", r.type(), payload.c_str());
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} break;
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default:
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M5.Log.printf("SZ:%3u TNF:%u T:%s\n", r.payloadSize(), r.tnf(), r.type());
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lcd.printf("T:%s\n", r.type());
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if (strcmp(r.type(), "image/png") == 0) {
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lcd.drawPng(r.payload(), r.payloadSize(), lcd.width() >> 1, lcd.height() >> 1);
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}
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break;
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}
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}
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} else {
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M5.Log.printf("NDEF Message TLV is NOT exists\n");
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}
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}
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void write_ndef()
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{
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auto& picc = nfc_a.activatedPICC();
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/*
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**** MIFARE Ultralight NOTICE ***************************
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Change the Ultralight series to NDEF format
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Note: This change cannot be undone
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*********************************************************
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*/
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if (picc.isMifareUltralight()) {
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if (!nfc_a.mifareUltralightChangeFormatToNDEF()) {
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M5_LOGE("Failed to mifareUltralightChangeFormatToNDEF");
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lcd.fillScreen(TFT_RED);
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return;
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}
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M5_LOGI("Changed NDEF format");
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}
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/*
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**** MIFARE DESFire NOTICE ******************************
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If the DESFire card is not in NDEF format, the PICC will be formatted
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This means all existing files and applications will be deleted!
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For DESFire light, the file structure is changed to comply with the NDEF specification,
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and the data is overwritten.
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*********************************************************
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*/
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if (picc.isMifareDESFire() && picc.type != Type::MIFARE_DESFire_Light) {
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bool valid{};
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if (!nfc_a.ndefIsValidFormat(valid)) {
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lcd.fillScreen(TFT_RED);
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return;
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}
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M5_LOGI("NDEF format valid?:%u", valid);
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if (!valid) {
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format_desfire();
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if (!nfc_a.ndefPrepareDesfire(picc.userAreaSize())) {
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M5_LOGE("Failed to prepare NDEF files");
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lcd.fillScreen(TFT_RED);
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return;
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}
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M5_LOGI("Prepare for NDEF OK");
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}
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}
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// Build message and write
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TLV msg{Tag::Message};
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Record r[5] = {}; // Wellknown as default
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// URI record
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r[0].setURIPayload("m5stack.com/", URIProtocol::HTTPS);
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// Text record with language type
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const char* zh_data = "你好 M5Stack";
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r[1].setTextPayload(zh_data, "zh");
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const char* en_data = "Hello M5Stack";
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r[2].setTextPayload(en_data, "en");
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const char* ja_data = "こんにちは M5Stack";
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r[3].setTextPayload(ja_data, "ja");
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// MIME record
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Record png{TNF::MIMEMedia};
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png.setType("image/png");
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png.setPayload(poji_64_png, poji_64_png_len);
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r[4] = png;
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uint32_t max_user_size = nfc_a.activatedPICC().userAreaSize() - 1 /* terminator TLV */;
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for (auto&& rr : r) {
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msg.push_back(rr);
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if (msg.required() > max_user_size) {
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msg.pop_back();
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break;
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}
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}
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if (!nfc_a.ndefWrite(msg)) {
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M5_LOGE("Failed to write");
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lcd.fillScreen(TFT_RED);
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return;
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}
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M5.Log.printf("Write NDEF OK!\n");
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}
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} // namespace
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void setup()
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{
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M5.begin();
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M5.setTouchButtonHeightByRatio(100);
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// The screen shall be in landscape mode
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if (lcd.height() > lcd.width()) {
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lcd.setRotation(1);
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}
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bool unit_ready{};
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#if defined(USING_M5DIAL_BUILTIN_WS1850S)
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// M5Dial builtin WS1850S: small loop antenna; reduce RxGain to 33dB to mitigate
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// reflection interference (default 48dB causes unstable WUPA on Builtin).
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{
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auto cfg = unit.config();
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cfg.receiver_gain = m5::unit::mfrc522::ReceiverGain::dB33;
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unit.config(cfg);
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}
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// M5Dial builtin WS1850S on In_I2C (G12/G11, shared with RTC8563)
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M5_LOGI("Using M5.In_I2C for builtin WS1850S");
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unit_ready = Units.add(unit, M5.In_I2C) && Units.begin();
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#elif defined(USING_UNIT_NFC) || defined(USING_UNIT_RFID2)
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// External I2C unit (GROVE port).
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// NessoN1: Arduino Wire (I2C_NUM_0) cannot be used for GROVE port (used by In_I2C internals).
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// Use QWIIC (port_a) with Wire. (Requires QWIIC-GROVE conversion cable)
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// NanoC6: Wire.begin() on GROVE pins conflicts with Ex_I2C on I2C_NUM_0; use M5.Ex_I2C directly.
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if (M5.getBoard() == m5::board_t::board_M5NanoC6) {
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M5_LOGI("Using M5.Ex_I2C");
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unit_ready = Units.add(unit, M5.Ex_I2C) && Units.begin();
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} else {
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auto pin_num_sda = M5.getPin(m5::pin_name_t::port_a_sda);
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auto pin_num_scl = M5.getPin(m5::pin_name_t::port_a_scl);
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M5_LOGI("getPin: SDA:%u SCL:%u", pin_num_sda, pin_num_scl);
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Wire.end();
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Wire.begin(pin_num_sda, pin_num_scl, 400 * 1000U);
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unit_ready = Units.add(unit, Wire) && Units.begin();
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}
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#elif defined(USING_CAP_CC1101)
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if (!SPI.bus()) {
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auto spi_sclk = M5.getPin(m5::pin_name_t::sd_spi_sclk);
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auto spi_mosi = M5.getPin(m5::pin_name_t::sd_spi_mosi);
|
|
auto spi_miso = M5.getPin(m5::pin_name_t::sd_spi_miso);
|
|
M5_LOGI("getPin: %d,%d,%d", spi_sclk, spi_mosi, spi_miso);
|
|
SPI.begin(spi_sclk, spi_miso, spi_mosi /* SS is shared SD, CC1101, ST25R3916 */);
|
|
}
|
|
SPISettings settings = {10000000, MSBFIRST, SPI_MODE1};
|
|
unit_ready = Units.add(unit, SPI, settings) && Units.begin();
|
|
#endif
|
|
|
|
if (!unit_ready) {
|
|
M5_LOGE("Failed to begin");
|
|
lcd.fillScreen(TFT_RED);
|
|
while (true) {
|
|
m5::utility::delay(10000);
|
|
}
|
|
}
|
|
M5_LOGI("M5UnitUnified initialized");
|
|
M5_LOGI("%s", Units.debugInfo().c_str());
|
|
|
|
lcd.setCursor(0, lcd.height() / 2);
|
|
lcd.printf("Please put the PICC and click/hold BtnA");
|
|
M5.Log.printf("Please put the PICC and click/hold BtnA\n");
|
|
}
|
|
|
|
void loop()
|
|
{
|
|
M5.update();
|
|
Units.update();
|
|
bool clicked = M5.BtnA.wasClicked(); // For read
|
|
bool held = M5.BtnA.wasHold(); // For write
|
|
|
|
if (clicked || held) {
|
|
PICC picc{};
|
|
if (nfc_a.detect(picc)) {
|
|
if (nfc_a.identify(picc) && nfc_a.reactivate(picc)) {
|
|
M5.Log.printf("PICC:%s %s %u/%u\n", picc.uidAsString().c_str(), picc.typeAsString().c_str(),
|
|
picc.userAreaSize(), picc.totalSize());
|
|
if (picc.supportsNDEF()) {
|
|
if (clicked) {
|
|
M5.Speaker.tone(2000, 30);
|
|
lcd.fillScreen(TFT_BLUE);
|
|
// nfc_a.dump();
|
|
read_ndef();
|
|
} else if (held) {
|
|
M5.Speaker.tone(4000, 30);
|
|
lcd.fillScreen(TFT_YELLOW);
|
|
write_ndef();
|
|
lcd.fillScreen(0);
|
|
}
|
|
M5.Log.printf("Please remove the PICC from the reader\n");
|
|
} else {
|
|
M5.Speaker.tone(1000, 50);
|
|
M5.Log.printf("Not support the NDEF\n");
|
|
}
|
|
} else {
|
|
M5_LOGE("Failed to identify/activate %s", picc.uidAsString().c_str());
|
|
}
|
|
nfc_a.deactivate();
|
|
lcd.setCursor(0, lcd.height() / 2);
|
|
lcd.printf("Please put the PICC and click/hold BtnA");
|
|
M5.Log.printf("Please put the PICC and click/hold BtnA\n");
|
|
} else {
|
|
M5.Log.printf("PICC NOT exists\n");
|
|
}
|
|
}
|
|
}
|