#include <string.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/event_groups.h"
#include "driver/spi_master.h"
#include "esp_log.h"
#include "esp_wifi.h"
#include "esp_netif.h"
#include "esp_event.h"
#include "nvs_flash.h"
#include "pn532.h"
#include "CryptnoxWallet.h"
#include "Pn532NfcTransport.h"
#include "ESP32Logger.h"
#include "esp32_crypto_provider.h"
#include "ESP32Platform.h"
#include "CW_Utils.h"
#include "config.h"

Include dependency graph for main.cpp:

Macros
#define	SPI_ENABLED 1
#define	I2C_ENABLED 0
#define	SPI_MOSI 11
#define	SPI_MISO 13
#define	SPI_SCLK 12
#define	SPI_MAX_TRANSFER_SZ 4096
#define	SPI_PIN_UNUSED (-1)
#define	NFC_CS 10
#define	WIFI_CONNECTED_BIT BIT0
#define	WIFI_FAIL_BIT BIT1

Functions
static void	wifi_event_handler (void arg, esp_event_base_t event_base, int32_t event_id, void event_data)
	FreeRTOS event handler driving the Wi-Fi station state machine.
static void	wifi_start (void)
	Initialise Wi-Fi station mode and block until connected or timeout.
static void	run_basic_usage_loop (CryptnoxWallet &wallet)
	Main application loop: connect, sign a test hash, wipe buffers, disconnect.
void	app_main (void)
	ESP-IDF application entry point.

Variables
static const char *const	TAG = "basic_usage"
static const uint32_t	LOOP_DELAY_MS = 1000U
static const uint32_t	WIFI_TIMEOUT_MS = 10000U
static const int	WIFI_MAX_RETRY = 5
static EventGroupHandle_t	s_wifi_event_group
static int	s_retry_num = 0
static const uint8_t	DEFAULT_PIN [] = "000000000"
	Demo PIN — replace with the PIN used during card initialisation.
static const size_t	DEFAULT_PIN_LEN = sizeof(DEFAULT_PIN) - 1U

Macro Definition Documentation

◆ I2C_ENABLED

#define I2C_ENABLED 0

Definition at line 50 of file main.cpp.

◆ NFC_CS

#define NFC_CS 10

Examples: BasicUsage/main/main.cpp, Connect/main/main.cpp, Sign/main/main.cpp, UsdcSigning/main/main.cpp, and VerifyPin/main/main.cpp.

Definition at line 59 of file main.cpp.

Referenced by app_main().

◆ SPI_ENABLED

#define SPI_ENABLED 1

Definition at line 49 of file main.cpp.

◆ SPI_MAX_TRANSFER_SZ

#define SPI_MAX_TRANSFER_SZ 4096

Examples: BasicUsage/main/main.cpp, Connect/main/main.cpp, Sign/main/main.cpp, UsdcSigning/main/main.cpp, and VerifyPin/main/main.cpp.

Definition at line 57 of file main.cpp.

Referenced by app_main().

◆ SPI_MISO

#define SPI_MISO 13

Examples: BasicUsage/main/main.cpp, Connect/main/main.cpp, Sign/main/main.cpp, UsdcSigning/main/main.cpp, and VerifyPin/main/main.cpp.

Definition at line 55 of file main.cpp.

Referenced by app_main().

◆ SPI_MOSI

#define SPI_MOSI 11

Examples: BasicUsage/main/main.cpp, Connect/main/main.cpp, Sign/main/main.cpp, UsdcSigning/main/main.cpp, and VerifyPin/main/main.cpp.

Definition at line 54 of file main.cpp.

Referenced by app_main().

◆ SPI_PIN_UNUSED

#define SPI_PIN_UNUSED (-1)

Examples: BasicUsage/main/main.cpp, Connect/main/main.cpp, Sign/main/main.cpp, UsdcSigning/main/main.cpp, and VerifyPin/main/main.cpp.

Definition at line 58 of file main.cpp.

Referenced by app_main().

◆ SPI_SCLK

#define SPI_SCLK 12

Examples: BasicUsage/main/main.cpp, Connect/main/main.cpp, Sign/main/main.cpp, UsdcSigning/main/main.cpp, and VerifyPin/main/main.cpp.

Definition at line 56 of file main.cpp.

Referenced by app_main().

◆ WIFI_CONNECTED_BIT

#define WIFI_CONNECTED_BIT BIT0

Examples: BasicUsage/main/main.cpp, Connect/main/main.cpp, Sign/main/main.cpp, and VerifyPin/main/main.cpp.

Definition at line 77 of file main.cpp.

Referenced by eth_rpc_wifi_connect(), wifi_event_handler(), wifi_event_handler(), and wifi_start().

◆ WIFI_FAIL_BIT

#define WIFI_FAIL_BIT BIT1

Examples: BasicUsage/main/main.cpp, Connect/main/main.cpp, Sign/main/main.cpp, and VerifyPin/main/main.cpp.

Definition at line 78 of file main.cpp.

Referenced by eth_rpc_wifi_connect(), wifi_event_handler(), wifi_event_handler(), and wifi_start().

Function Documentation

◆ app_main()

void app_main ( void )

ESP-IDF application entry point.

Initialises NVS, starts Wi-Fi for full TRNG entropy, brings up the SPI or I²C bus and PN532 reader, then enters run_basic_usage_loop.

Examples: BasicUsage/main/main.cpp, Connect/main/main.cpp, Sign/main/main.cpp, UsdcSigning/main/main.cpp, and VerifyPin/main/main.cpp.

Definition at line 284 of file main.cpp.

References ESP32Logger::begin(), pn532_config_t::i2c_clock_hz, pn532_config_t::i2c_port, NFC_CS, pn532_config_t::pin_cs, pn532_config_t::pin_irq, pn532_config_t::pin_rst, pn532_config_t::pin_scl, pn532_config_t::pin_sda, pn532_init(), PN532_TRANSPORT_I2C, PN532_TRANSPORT_SPI, Pn532NfcTransport::printFirmwareVersion(), run_basic_usage_loop(), pn532_config_t::skip_bus_init, pn532_config_t::spi_host, SPI_MAX_TRANSFER_SZ, SPI_MISO, SPI_MOSI, SPI_PIN_UNUSED, SPI_SCLK, TAG, pn532_config_t::transport, and wifi_start().

◆ run_basic_usage_loop()

void run_basic_usage_loop ( CryptnoxWallet & wallet )

static

Main application loop: connect, sign a test hash, wipe buffers, disconnect.

Each iteration establishes the secure channel, signs a 32-byte test hash, prints the raw r‖s bytes, securely wipes sensitive buffers, then disconnects. Halts permanently on CW_SIGN_PIN_INCORRECT to protect the card's retry counter.

Parameters

[in] wallet Initialised wallet instance.

Examples: BasicUsage/main/main.cpp.

Definition at line 192 of file main.cpp.

References DEFAULT_PIN, DEFAULT_PIN_LEN, LOOP_DELAY_MS, and TAG.

Referenced by app_main().

◆ wifi_event_handler()

void wifi_event_handler	(	void *	arg,
		esp_event_base_t	event_base,
		int32_t	event_id,
		void *	event_data )

static

FreeRTOS event handler driving the Wi-Fi station state machine.

Handles WIFI_EVENT_STA_START (triggers connection), WIFI_EVENT_STA_DISCONNECTED (retries up to WIFI_MAX_RETRY times), and IP_EVENT_STA_GOT_IP (signals success via the event group).

Parameters

[in]	arg	Unused.
[in]	event_base	Event base (`WIFI_EVENT` or `IP_EVENT`).
[in]	event_id	Event identifier within `event_base`.
[in]	event_data	Event-specific data (unused).

Examples: BasicUsage/main/main.cpp, Connect/main/main.cpp, Sign/main/main.cpp, and VerifyPin/main/main.cpp.

Definition at line 95 of file main.cpp.

References s_retry_num, s_wifi_event_group, WIFI_CONNECTED_BIT, WIFI_FAIL_BIT, and WIFI_MAX_RETRY.

Referenced by eth_rpc_wifi_connect(), and wifi_start().

◆ wifi_start()

void wifi_start ( void )

static

Initialise Wi-Fi station mode and block until connected or timeout.

Starts the ESP Wi-Fi stack, registers wifi_event_handler, configures the SSID and password from WIFI_SSID / WIFI_PASSWORD in config.h, then waits up to WIFI_TIMEOUT_MS for an IP address. The radio must be active before crypto operations so the hardware TRNG operates with full entropy (SEC-001).