NFC magic cards support

applications/plugins/nfc_magic/application.fam

@@ -0,0 +1,20 @@
+App(
+    appid="nfc_magic",
+    name="Nfc Magic",
+    apptype=FlipperAppType.EXTERNAL,
+    entry_point="nfc_magic_app",
+    requires=[
+        "storage",
+        "gui",
+    ],
+    stack_size=4 * 1024,
+    order=30,
+    fap_icon="../../../assets/icons/Archive/125_10px.png",
+    fap_category="Tools",
+    fap_private_libs=[
+        Lib(
+            name="magic",
+        ),
+    ],
+    fap_icon_assets="assets",
+)

applications/plugins/nfc_magic/lib/magic/magic.c

@@ -0,0 +1,214 @@
+#include "magic.h"
+
+#include <furi_hal_nfc.h>
+
+#define TAG "Magic"
+
+#define MAGIC_CMD_WUPA (0x40)
+#define MAGIC_CMD_WIPE (0x41)
+#define MAGIC_CMD_READ (0x43)
+#define MAGIC_CMD_WRITE (0x43)
+
+#define MAGIC_MIFARE_READ_CMD (0x30)
+#define MAGIC_MIFARE_WRITE_CMD (0xA0)
+
+#define MAGIC_ACK (0x0A)
+
+#define MAGIC_BUFFER_SIZE (32)
+
+bool magic_wupa() {
+    bool magic_activated = false;
+    uint8_t tx_data[MAGIC_BUFFER_SIZE] = {};
+    uint8_t rx_data[MAGIC_BUFFER_SIZE] = {};
+    uint16_t rx_len = 0;
+    FuriHalNfcReturn ret = 0;
+
+    do {
+        // Setup nfc poller
+        furi_hal_nfc_exit_sleep();
+        furi_hal_nfc_ll_txrx_on();
+        furi_hal_nfc_ll_poll();
+        ret = furi_hal_nfc_ll_set_mode(
+            FuriHalNfcModePollNfca, FuriHalNfcBitrate106, FuriHalNfcBitrate106);
+        if(ret != FuriHalNfcReturnOk) break;
+
+        furi_hal_nfc_ll_set_fdt_listen(FURI_HAL_NFC_LL_FDT_LISTEN_NFCA_POLLER);
+        furi_hal_nfc_ll_set_fdt_poll(FURI_HAL_NFC_LL_FDT_POLL_NFCA_POLLER);
+        furi_hal_nfc_ll_set_error_handling(FuriHalNfcErrorHandlingNfc);
+        furi_hal_nfc_ll_set_guard_time(FURI_HAL_NFC_LL_GT_NFCA);
+
+        // Start communication
+        tx_data[0] = MAGIC_CMD_WUPA;
+        ret = furi_hal_nfc_ll_txrx_bits(
+            tx_data,
+            7,
+            rx_data,
+            sizeof(rx_data),
+            &rx_len,
+            FURI_HAL_NFC_LL_TXRX_FLAGS_CRC_TX_MANUAL | FURI_HAL_NFC_LL_TXRX_FLAGS_AGC_ON |
+                FURI_HAL_NFC_LL_TXRX_FLAGS_CRC_RX_KEEP,
+            furi_hal_nfc_ll_ms2fc(20));
+        if(ret != FuriHalNfcReturnIncompleteByte) break;
+        if(rx_len != 4) break;
+        if(rx_data[0] != MAGIC_ACK) break;
+        magic_activated = true;
+    } while(false);
+
+    if(!magic_activated) {
+        furi_hal_nfc_ll_txrx_off();
+        furi_hal_nfc_start_sleep();
+    }
+
+    return magic_activated;
+}
+
+bool magic_data_access_cmd() {
+    bool write_cmd_success = false;
+    uint8_t tx_data[MAGIC_BUFFER_SIZE] = {};
+    uint8_t rx_data[MAGIC_BUFFER_SIZE] = {};
+    uint16_t rx_len = 0;
+    FuriHalNfcReturn ret = 0;
+
+    do {
+        tx_data[0] = MAGIC_CMD_WRITE;
+        ret = furi_hal_nfc_ll_txrx_bits(
+            tx_data,
+            8,
+            rx_data,
+            sizeof(rx_data),
+            &rx_len,
+            FURI_HAL_NFC_LL_TXRX_FLAGS_CRC_TX_MANUAL | FURI_HAL_NFC_LL_TXRX_FLAGS_AGC_ON |
+                FURI_HAL_NFC_LL_TXRX_FLAGS_CRC_RX_KEEP,
+            furi_hal_nfc_ll_ms2fc(20));
+        if(ret != FuriHalNfcReturnIncompleteByte) break;
+        if(rx_len != 4) break;
+        if(rx_data[0] != MAGIC_ACK) break;
+
+        write_cmd_success = true;
+    } while(false);
+
+    if(!write_cmd_success) {
+        furi_hal_nfc_ll_txrx_off();
+        furi_hal_nfc_start_sleep();
+    }
+
+    return write_cmd_success;
+}
+
+bool magic_read_block(uint8_t block_num, MfClassicBlock* data) {
+    furi_assert(data);
+
+    bool read_success = false;
+
+    uint8_t tx_data[MAGIC_BUFFER_SIZE] = {};
+    uint8_t rx_data[MAGIC_BUFFER_SIZE] = {};
+    uint16_t rx_len = 0;
+    FuriHalNfcReturn ret = 0;
+
+    do {
+        tx_data[0] = MAGIC_MIFARE_READ_CMD;
+        tx_data[1] = block_num;
+        ret = furi_hal_nfc_ll_txrx_bits(
+            tx_data,
+            2 * 8,
+            rx_data,
+            sizeof(rx_data),
+            &rx_len,
+            FURI_HAL_NFC_LL_TXRX_FLAGS_AGC_ON,
+            furi_hal_nfc_ll_ms2fc(20));
+
+        if(ret != FuriHalNfcReturnOk) break;
+        if(rx_len != 16 * 8) break;
+        memcpy(data->value, rx_data, sizeof(data->value));
+        read_success = true;
+    } while(false);
+
+    if(!read_success) {
+        furi_hal_nfc_ll_txrx_off();
+        furi_hal_nfc_start_sleep();
+    }
+
+    return read_success;
+}
+
+bool magic_write_blk(uint8_t block_num, MfClassicBlock* data) {
+    furi_assert(data);
+
+    bool write_success = false;
+    uint8_t tx_data[MAGIC_BUFFER_SIZE] = {};
+    uint8_t rx_data[MAGIC_BUFFER_SIZE] = {};
+    uint16_t rx_len = 0;
+    FuriHalNfcReturn ret = 0;
+
+    do {
+        tx_data[0] = MAGIC_MIFARE_WRITE_CMD;
+        tx_data[1] = block_num;
+        ret = furi_hal_nfc_ll_txrx_bits(
+            tx_data,
+            2 * 8,
+            rx_data,
+            sizeof(rx_data),
+            &rx_len,
+            FURI_HAL_NFC_LL_TXRX_FLAGS_AGC_ON | FURI_HAL_NFC_LL_TXRX_FLAGS_CRC_RX_KEEP,
+            furi_hal_nfc_ll_ms2fc(20));
+        if(ret != FuriHalNfcReturnIncompleteByte) break;
+        if(rx_len != 4) break;
+        if(rx_data[0] != MAGIC_ACK) break;
+
+        memcpy(tx_data, data->value, sizeof(data->value));
+        ret = furi_hal_nfc_ll_txrx_bits(
+            tx_data,
+            16 * 8,
+            rx_data,
+            sizeof(rx_data),
+            &rx_len,
+            FURI_HAL_NFC_LL_TXRX_FLAGS_AGC_ON | FURI_HAL_NFC_LL_TXRX_FLAGS_CRC_RX_KEEP,
+            furi_hal_nfc_ll_ms2fc(20));
+        if(ret != FuriHalNfcReturnIncompleteByte) break;
+        if(rx_len != 4) break;
+        if(rx_data[0] != MAGIC_ACK) break;
+
+        write_success = true;
+    } while(false);
+
+    if(!write_success) {
+        furi_hal_nfc_ll_txrx_off();
+        furi_hal_nfc_start_sleep();
+    }
+
+    return write_success;
+}
+
+bool magic_wipe() {
+    bool wipe_success = false;
+    uint8_t tx_data[MAGIC_BUFFER_SIZE] = {};
+    uint8_t rx_data[MAGIC_BUFFER_SIZE] = {};
+    uint16_t rx_len = 0;
+    FuriHalNfcReturn ret = 0;
+
+    do {
+        tx_data[0] = MAGIC_CMD_WIPE;
+        ret = furi_hal_nfc_ll_txrx_bits(
+            tx_data,
+            8,
+            rx_data,
+            sizeof(rx_data),
+            &rx_len,
+            FURI_HAL_NFC_LL_TXRX_FLAGS_CRC_TX_MANUAL | FURI_HAL_NFC_LL_TXRX_FLAGS_AGC_ON |
+                FURI_HAL_NFC_LL_TXRX_FLAGS_CRC_RX_KEEP,
+            furi_hal_nfc_ll_ms2fc(2000));
+
+        if(ret != FuriHalNfcReturnIncompleteByte) break;
+        if(rx_len != 4) break;
+        if(rx_data[0] != MAGIC_ACK) break;
+
+        wipe_success = true;
+    } while(false);
+
+    return wipe_success;
+}
+
+void magic_deactivate() {
+    furi_hal_nfc_ll_txrx_off();
+    furi_hal_nfc_start_sleep();
+}

applications/plugins/nfc_magic/lib/magic/magic.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <lib/nfc/protocols/mifare_classic.h>
+
+bool magic_wupa();
+
+bool magic_read_block(uint8_t block_num, MfClassicBlock* data);
+
+bool magic_data_access_cmd();
+
+bool magic_write_blk(uint8_t block_num, MfClassicBlock* data);
+
+bool magic_wipe();
+
+void magic_deactivate();