207 lines
5.8 KiB
C
207 lines
5.8 KiB
C
/**
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* @file config.h
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* @brief AT command configuration module for TCP2UART
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*
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* Handles UART1 AT commands for network and serial port configuration.
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*
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* Supported AT commands:
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* - AT+IP=192.168.1.100 Set device IP
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* - AT+MASK=255.255.255.0 Set subnet mask
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* - AT+GW=192.168.1.1 Set gateway
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* - AT+PORT=8080 Set TCP Server listen port
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* - AT+RIP=192.168.1.200 Set TCP Client remote IP
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* - AT+RPORT=9000 Set TCP Client remote port
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* - AT+BAUD1=115200 Set UART2 baudrate
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* - AT+BAUD2=115200 Set UART3 baudrate
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* - AT+MAC=00:11:22:33:44:55 Set MAC address
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* - AT+DHCP=0/1 Enable/disable DHCP
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* - AT+SAVE Save parameters to Flash
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* - AT+RESET Reset device
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* - AT+DEFAULT Restore factory defaults
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* - AT+? Query current configuration
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*/
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#ifndef __CONFIG_H__
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#define __CONFIG_H__
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#include <stdint.h>
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#include <stdbool.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Configuration magic number "TCPU" */
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#define CONFIG_MAGIC 0x54435055
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/* Configuration version for compatibility */
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#define CONFIG_VERSION 0x0001
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/* Device configuration structure */
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typedef struct {
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uint32_t magic; /* Magic number for validation */
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uint16_t version; /* Configuration version */
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uint16_t reserved; /* Reserved for alignment */
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/* Network settings */
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uint8_t mac[6]; /* MAC address */
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uint8_t dhcp_enable; /* DHCP enable flag */
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uint8_t reserved2; /* Reserved for alignment */
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uint8_t ip[4]; /* Device IP address */
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uint8_t mask[4]; /* Subnet mask */
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uint8_t gw[4]; /* Gateway */
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/* TCP Server settings */
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uint16_t server_port; /* Server listen port */
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uint16_t reserved3; /* Reserved for alignment */
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/* TCP Client settings */
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uint8_t remote_ip[4]; /* Remote server IP */
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uint16_t remote_port; /* Remote server port */
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uint16_t reconnect_interval;/* Reconnect interval (ms) */
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/* UART settings */
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uint32_t uart2_baudrate; /* UART2 (Server) baudrate */
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uint32_t uart3_baudrate; /* UART3 (Client) baudrate */
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uint8_t uart2_databits; /* UART2 data bits */
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uint8_t uart2_stopbits; /* UART2 stop bits */
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uint8_t uart2_parity; /* UART2 parity */
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uint8_t uart3_databits; /* UART3 data bits */
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uint8_t uart3_stopbits; /* UART3 stop bits */
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uint8_t uart3_parity; /* UART3 parity */
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uint16_t reserved4; /* Reserved for alignment */
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/* CRC32 checksum (must be last) */
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uint32_t crc;
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} device_config_t;
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/* Default configuration values */
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#define DEFAULT_IP {192, 168, 1, 100}
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#define DEFAULT_MASK {255, 255, 255, 0}
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#define DEFAULT_GW {192, 168, 1, 1}
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#define DEFAULT_MAC {0x02, 0x00, 0x00, 0x00, 0x00, 0x01}
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#define DEFAULT_SERVER_PORT 8080
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#define DEFAULT_REMOTE_IP {192, 168, 1, 200}
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#define DEFAULT_REMOTE_PORT 9000
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#define DEFAULT_UART_BAUDRATE 115200
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#define DEFAULT_UART_DATABITS 8
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#define DEFAULT_UART_STOPBITS 1
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#define DEFAULT_UART_PARITY 0
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#define DEFAULT_DHCP_ENABLE 0
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#define DEFAULT_RECONNECT_MS 3000
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/* AT command result codes */
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typedef enum {
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AT_OK = 0,
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AT_ERROR,
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AT_INVALID_PARAM,
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AT_UNKNOWN_CMD,
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AT_SAVE_FAILED,
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AT_NEED_REBOOT
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} at_result_t;
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/**
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* @brief Initialize configuration module
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* @return 0 on success, negative on error
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*/
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int config_init(void);
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/**
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* @brief Load configuration from Flash
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* @return 0 on success, negative on error (defaults loaded)
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*/
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int config_load(void);
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/**
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* @brief Save configuration to Flash
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* @return 0 on success, negative on error
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*/
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int config_save(void);
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/**
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* @brief Reset configuration to factory defaults
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*/
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void config_set_defaults(void);
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/**
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* @brief Get current configuration
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* @return Pointer to current configuration (read-only)
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*/
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const device_config_t *config_get(void);
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/**
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* @brief Get mutable configuration for modification
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* @return Pointer to configuration structure
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*/
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device_config_t *config_get_mutable(void);
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/**
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* @brief Process AT command received from UART1
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* @param cmd Command string (null-terminated)
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* @param response Response buffer
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* @param max_len Maximum response length
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* @return AT command result code
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*/
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at_result_t config_process_at_cmd(const char *cmd, char *response, uint16_t max_len);
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/**
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* @brief UART1 IDLE interrupt handler for config module
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*/
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void config_uart_idle_handler(void);
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/**
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* @brief Start UART1 reception for configuration
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*/
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void config_start_reception(void);
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/**
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* @brief Poll configuration UART and process pending AT commands
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*/
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void config_poll(void);
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/**
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* @brief Check whether AT+RESET requested a system reset
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*/
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bool config_is_reset_requested(void);
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/**
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* @brief Clear the pending reset request flag
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*/
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void config_clear_reset_requested(void);
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/**
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* @brief Format IP address to string
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* @param ip IP address bytes
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* @param str Output string buffer (min 16 bytes)
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*/
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void config_ip_to_str(const uint8_t *ip, char *str);
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/**
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* @brief Parse IP address from string
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* @param str IP address string (e.g. "192.168.1.100")
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* @param ip Output IP address bytes
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* @return 0 on success, negative on error
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*/
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int config_str_to_ip(const char *str, uint8_t *ip);
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/**
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* @brief Format MAC address to string
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* @param mac MAC address bytes
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* @param str Output string buffer (min 18 bytes)
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*/
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void config_mac_to_str(const uint8_t *mac, char *str);
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/**
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* @brief Parse MAC address from string
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* @param str MAC address string (e.g. "00:11:22:33:44:55")
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* @param mac Output MAC address bytes
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* @return 0 on success, negative on error
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*/
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int config_str_to_mac(const char *str, uint8_t *mac);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __CONFIG_H__ */
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