File content as of revision 17:574f90b11417:

#include "mbed.h"
#include "device_configuration.h"


/*
 * Debug option
 */
#if 0
//Enable debug
#include <cstdio>
#define INFO(x, ...) std::printf(""x"\r\n", ##__VA_ARGS__); 
#define DBG(x, ...) std::printf("[dev_conf: DBG]"x"\r\n", ##__VA_ARGS__); 
#define WARN(x, ...) std::printf("[dev_conf: WARN]"x"\r\n", ##__VA_ARGS__); 
#define ERR(x, ...) std::printf("[dev_conf: ERR]"x"\r\n", ##__VA_ARGS__); 
#else
//Disable debug
#define INFO(x, ...)
#define DBG(x, ...) 
#define WARN(x, ...)
#define ERR(x, ...) 
#endif


/*
 * Variables for network configuration
 */
// Device configuration
uint16_t u16IpAddr[4], u16IpSubnet[4], u16IpGateway[4], u16MacAddr[3]; // 16-bits variables to be compatible with eeprom functions
char strIpAddr[16], strIpSubnet[16], strIpGateway[16], strMacAddr[20]; // RPC variables, converted from 16-bits u16ip_xxx
uint16_t u16DeviceConfiguredFlag = 0;  // flag indicates whether device has been configured (0xA5A5) or not
// TCP server/UDP
uint16_t u16LocalTcpServerPort = DEFAULT_LOCAL_TCP_SERVER_PORT;
uint16_t u16LocalUdpPort = DEFAULT_LOCAL_UDP_PORT;
// TCP client mode, set parameters of the remote TCP server this device connects to.
// When enabled, this device will send its status to the server every transmit_time_period.
uint16_t u16RemoteTcpServerIpAddr[4]; // 16-bit variable to be compatible with eeprom functions
char strRemoteTcpServerIpAddr[16]; // RPC variable, converted from 16-bits u16server_ip_addr
uint16_t u16RemoteTcpServerPort; // 16-bit variable to be compatible with eeprom functions
uint16_t u16AutoTransmitFlag = 0, u16TransmitPeriod = DEFAULT_TRANSMIT_PERIOD; // auto transmit status, time period = 1s
// enable modes
uint16_t u16EnableTcpServer = 0, u16EnableTcpClient = 0, u16EnableUdp = DEFAULT_ENABLE_FLAG_VALUE; // flags for enabling TCP server/client and UDP (UDP is always on for configuration)
// extra
uint8_t u8IpAddr[4]; // keep device ip address in 8-bits
uint8_t u8MacAddr[6]; // keep mac in 8-bits
uint8_t u8RemoteTcpServerIpAddr[4]; // remote TCP server ip address in 8-bits

/*!
 * Function to write module network configuration
 * @param <char *buf> configuration buffer
 * @note 4x16-bit IP address
 * @note 4x16-bit subnet
 * @note 4x16-bit gateway
 * @note 3x16-bit MAC
 * @note 16-bit TCP local port
 * @note 16-bit UDP local port
 */
void write_device_configuration(uint16_t* ip, uint16_t* subnet, uint16_t* gateway,
            uint16_t* mac, uint16_t tcp_port, uint16_t udp_port,
            uint16_t* remote_ip, uint16_t remote_port, uint16_t auto_transmit, uint16_t transmit_period,
            uint16_t enable_tcp_server, uint16_t enable_tcp_client, uint16_t enable_udp) {
    // Write network configuration
    // 4-byte IP address + 4-byte subnet + 4-byte gateway + 3-byte MAC
    // + local TCP server port + local UDP port
    
    INFO("Saving network configuration for this device...");
    
    enableEEPROMWriting();
    
    // erase first_run flag
    writeEEPROMHalfWord(DEVICE_CONFIGURED_FLAG_POS, DEFAULT_ENABLE_FLAG_VALUE);
    
    // IP address
    writeEEPROMHalfWord(IP_ADDRESS_POS+2*0, ip[0]);
    writeEEPROMHalfWord(IP_ADDRESS_POS+2*1, ip[1]);
    writeEEPROMHalfWord(IP_ADDRESS_POS+2*2, ip[2]);
    writeEEPROMHalfWord(IP_ADDRESS_POS+2*3, ip[3]);
    
    // IP subnet
    writeEEPROMHalfWord(IP_SUBNET_POS+2*0, subnet[0]);
    writeEEPROMHalfWord(IP_SUBNET_POS+2*1, subnet[1]);
    writeEEPROMHalfWord(IP_SUBNET_POS+2*2, subnet[2]);
    writeEEPROMHalfWord(IP_SUBNET_POS+2*3, subnet[3]);
    
    // IP gateway
    writeEEPROMHalfWord(IP_GATEWAY_POS+2*0, gateway[0]);
    writeEEPROMHalfWord(IP_GATEWAY_POS+2*1, gateway[1]);
    writeEEPROMHalfWord(IP_GATEWAY_POS+2*2, gateway[2]);
    writeEEPROMHalfWord(IP_GATEWAY_POS+2*3, gateway[3]);
    
    // MAC address
    writeEEPROMHalfWord(MAC_ADDRESS_POS+2*0, mac[0]);
    writeEEPROMHalfWord(MAC_ADDRESS_POS+2*1, mac[1]);
    writeEEPROMHalfWord(MAC_ADDRESS_POS+2*2, mac[2]);
    
    // Ports
    writeEEPROMHalfWord(LOCAL_TCP_SERVER_PORT_POS, tcp_port);
    writeEEPROMHalfWord(LOCAL_UDP_PORT_POS, udp_port);
    
    // Remote TCP server
    writeEEPROMHalfWord(REMOTE_TCP_SERVER_IP_ADDR_POS+2*0, remote_ip[0]);
    writeEEPROMHalfWord(REMOTE_TCP_SERVER_IP_ADDR_POS+2*1, remote_ip[1]);
    writeEEPROMHalfWord(REMOTE_TCP_SERVER_IP_ADDR_POS+2*2, remote_ip[2]);
    writeEEPROMHalfWord(REMOTE_TCP_SERVER_IP_ADDR_POS+2*3, remote_ip[3]);
    
    // Remote port
    writeEEPROMHalfWord(REMOTE_TCP_SERVER_PORT_POS, remote_port);
    
    // Auto transmit
    writeEEPROMHalfWord(AUTO_TRANSMIT_FLAG_POS, auto_transmit);
    writeEEPROMHalfWord(AUTO_TRANSMIT_TIME_PERIOD_POS, transmit_period);
    
    // Enable modes
    writeEEPROMHalfWord(ENABLE_TCP_SERVER_POS, enable_tcp_server);
    writeEEPROMHalfWord(ENABLE_TCP_CLIENT_POS, enable_tcp_client);
    writeEEPROMHalfWord(ENABLE_UDP_MODE_POS, enable_udp);
    
    disableEEPROMWriting();
    
    INFO("Successful");
}

/*!
 * Function to load module network configuration
 */
void read_device_configuration(void) {
    mbed_mac_address((char *)u8MacAddr);
    
    INFO("Loading network configuration...");
    
    // check if configured
    u16DeviceConfiguredFlag = readEEPROMHalfWord(DEVICE_CONFIGURED_FLAG_POS);
    
    // if not first run, load network config
    if (u16DeviceConfiguredFlag == DEFAULT_ENABLE_FLAG_VALUE) {
        INFO("User settings");
        
        // IP address
        u16IpAddr[0] = readEEPROMHalfWord(IP_ADDRESS_POS+2*0);
        u16IpAddr[1] = readEEPROMHalfWord(IP_ADDRESS_POS+2*1);
        u16IpAddr[2] = readEEPROMHalfWord(IP_ADDRESS_POS+2*2);
        u16IpAddr[3] = readEEPROMHalfWord(IP_ADDRESS_POS+2*3);
        u8IpAddr[0] = (uint8_t)(u16IpAddr[0] & 0x00FF);
        u8IpAddr[1] = (uint8_t)(u16IpAddr[1] & 0x00FF);
        u8IpAddr[2] = (uint8_t)(u16IpAddr[2] & 0x00FF);
        u8IpAddr[3] = (uint8_t)(u16IpAddr[3] & 0x00FF);
        
        // IP subnet
        u16IpSubnet[0] = readEEPROMHalfWord(IP_SUBNET_POS+2*0);
        u16IpSubnet[1] = readEEPROMHalfWord(IP_SUBNET_POS+2*1);
        u16IpSubnet[2] = readEEPROMHalfWord(IP_SUBNET_POS+2*2);
        u16IpSubnet[3] = readEEPROMHalfWord(IP_SUBNET_POS+2*3);
        
        // IP gateway
        u16IpGateway[0] = readEEPROMHalfWord(IP_GATEWAY_POS+2*0);
        u16IpGateway[1] = readEEPROMHalfWord(IP_GATEWAY_POS+2*1);
        u16IpGateway[2] = readEEPROMHalfWord(IP_GATEWAY_POS+2*2);
        u16IpGateway[3] = readEEPROMHalfWord(IP_GATEWAY_POS+2*3);
        
        // MAC address
        u16MacAddr[0] = readEEPROMHalfWord(MAC_ADDRESS_POS+2*0);
        u16MacAddr[1] = readEEPROMHalfWord(MAC_ADDRESS_POS+2*1);
        u16MacAddr[2] = readEEPROMHalfWord(MAC_ADDRESS_POS+2*2);
        u8MacAddr[0] = DEFAULT_MAC0; u8MacAddr[1] = DEFAULT_MAC1; u8MacAddr[2] = DEFAULT_MAC2;
        u8MacAddr[3] = (uint8_t)(u16MacAddr[0] & 0x00FF);
        u8MacAddr[4] = (uint8_t)(u16MacAddr[1] & 0x00FF);
        u8MacAddr[5] = (uint8_t)(u16MacAddr[2] & 0x00FF);
        
        // Ports
        u16LocalTcpServerPort = readEEPROMHalfWord(LOCAL_TCP_SERVER_PORT_POS);
        u16LocalUdpPort = readEEPROMHalfWord(LOCAL_UDP_PORT_POS);
        
        // Remote TCP server
        u16RemoteTcpServerIpAddr[0] = readEEPROMHalfWord(REMOTE_TCP_SERVER_IP_ADDR_POS+2*0);
        u16RemoteTcpServerIpAddr[1] = readEEPROMHalfWord(REMOTE_TCP_SERVER_IP_ADDR_POS+2*1);
        u16RemoteTcpServerIpAddr[2] = readEEPROMHalfWord(REMOTE_TCP_SERVER_IP_ADDR_POS+2*2);
        u16RemoteTcpServerIpAddr[3] = readEEPROMHalfWord(REMOTE_TCP_SERVER_IP_ADDR_POS+2*3);
        u8RemoteTcpServerIpAddr[0] = (uint8_t)(u16RemoteTcpServerIpAddr[0] & 0x00FF);
        u8RemoteTcpServerIpAddr[1] = (uint8_t)(u16RemoteTcpServerIpAddr[1] & 0x00FF);
        u8RemoteTcpServerIpAddr[2] = (uint8_t)(u16RemoteTcpServerIpAddr[2] & 0x00FF);
        u8RemoteTcpServerIpAddr[3] = (uint8_t)(u16RemoteTcpServerIpAddr[3] & 0x00FF);
        
        // Remote port
        u16RemoteTcpServerPort = readEEPROMHalfWord(REMOTE_TCP_SERVER_PORT_POS);
        
        // Auto transmit
        u16AutoTransmitFlag = readEEPROMHalfWord(AUTO_TRANSMIT_FLAG_POS);
        u16TransmitPeriod = readEEPROMHalfWord(AUTO_TRANSMIT_TIME_PERIOD_POS);
        
        // Enable modes
        u16EnableTcpServer = readEEPROMHalfWord(ENABLE_TCP_SERVER_POS);
        u16EnableTcpClient = readEEPROMHalfWord(ENABLE_TCP_CLIENT_POS);
        u16EnableUdp = readEEPROMHalfWord(ENABLE_UDP_MODE_POS);
        
        sprintf(strIpAddr, "%d.%d.%d.%d", u8IpAddr[0], u8IpAddr[1], u8IpAddr[2], u8IpAddr[3]);
        sprintf(strIpSubnet, "%d.%d.%d.%d", (uint8_t)u16IpSubnet[0], (uint8_t)u16IpSubnet[1], (uint8_t)u16IpSubnet[2], (uint8_t)u16IpSubnet[3]);
        sprintf(strIpGateway, "%d.%d.%d.%d", (uint8_t)u16IpGateway[0], (uint8_t)u16IpGateway[1], (uint8_t)u16IpGateway[2], (uint8_t)u16IpGateway[3]);
        sprintf(strRemoteTcpServerIpAddr, "%d.%d.%d.%d", u8RemoteTcpServerIpAddr[0], u8RemoteTcpServerIpAddr[1], u8RemoteTcpServerIpAddr[2], u8RemoteTcpServerIpAddr[3]);
        sprintf(strMacAddr, "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x", u8MacAddr[0], u8MacAddr[1], u8MacAddr[2], u8MacAddr[3], u8MacAddr[4], u8MacAddr[5]);
    }
    // if ip is not configured, use default addresses
    else {
        INFO("No user settings, load defaults");
        u8MacAddr[0] = DEFAULT_MAC0; u8MacAddr[1] = DEFAULT_MAC1; u8MacAddr[2] = DEFAULT_MAC2;
        u8MacAddr[3] = DEFAULT_MAC3; u8MacAddr[4] = DEFAULT_MAC4; u8MacAddr[5] = DEFAULT_MAC5; 
        sprintf(strIpAddr, DEFAULT_IP_ADDRESS);
        sprintf(strIpSubnet, DEFAULT_IP_SUBNET);
        sprintf(strIpGateway, DEFAULT_IP_GATEWAY);
        sprintf(strRemoteTcpServerIpAddr, DEFAULT_REMOTE_TCP_SERVER_IP);
        sprintf(strMacAddr, "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x", u8MacAddr[0], u8MacAddr[1], u8MacAddr[2], u8MacAddr[3], u8MacAddr[4], u8MacAddr[5]);
    }
    
    INFO("Successful");
    INFO("IP: %s", strIpAddr);
    INFO("MASK: %s", strIpSubnet);
    INFO("GW: %s", strIpGateway);
    INFO("TCP server local port: %d", u16LocalTcpServerPort);
    INFO("UDP server local port: %d", u16LocalUdpPort);
    
    INFO("TCP server: %s", (u16EnableTcpServer == DEFAULT_ENABLE_FLAG_VALUE) ? "enabled" : "disable");
    INFO("TCP client: %s", (u16EnableTcpClient == DEFAULT_ENABLE_FLAG_VALUE) ? "enabled" : "disable");
    INFO("UDP: %s", (u16EnableUdp == DEFAULT_ENABLE_FLAG_VALUE) ? "enabled" : "disable");
    
    INFO("Remote TCP server: %s", strRemoteTcpServerIpAddr);
    INFO("Remote TCP server port: %d", u16RemoteTcpServerPort);
    INFO("Auto transmit: %s", (u16AutoTransmitFlag == DEFAULT_ENABLE_FLAG_VALUE) ? "enabled" : "disable");
    INFO("Period: %d", u16TransmitPeriod);
}

void reset_device_configuration() {
    // erase first_run flag
    enableEEPROMWriting();
    disableEEPROMWriting();
}