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54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
/*
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* MTG RFID Companion - MFRC522 RFID manager (Core 0)
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*
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* Phase 3: Initializes the MFRC522 as a device on the shared SPI2_HOST bus,
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* registers an ESP event loop listener for card state changes, converts UIDs
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* to uppercase hex strings, and pins the polling task to Core 0.
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*/
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#pragma once
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#include "esp_err.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define RFID_UID_STR_MAX_LEN (24) /* 10 bytes x 2 hex chars */
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/**
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* @brief Initialize the MFRC522 driver and register event listeners.
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* @return ESP_OK on success.
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*/
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esp_err_t rfid_manager_init(void);
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/**
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* @brief Start polling for cards and pin the polling task to Core 0.
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* @return ESP_OK on success.
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*/
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esp_err_t rfid_manager_start(void);
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/**
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* @brief Return the most recently scanned UID (uppercase hex, no separators).
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* 8 chars for 4-byte UIDs, 14 chars for 7-byte UIDs.
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*/
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const char *rfid_manager_last_uid(void);
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/**
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* @brief True once a new card has been scanned since the last poll().
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*/
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bool rfid_manager_has_pending_card(void);
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/**
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* @brief Clear the pending-card flag (call after consuming the UID).
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*/
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void rfid_manager_consume_card(void);
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/**
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* @brief Pause or resume RFID polling task (e.g. during OTA flash write).
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*/
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void rfid_manager_pause(bool pause);
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#ifdef __cplusplus
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}
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#endif |