File content as of revision 2:e47cc8c92b3f:

#include "Terminal.h"
#include "mbed.h"
#include <cctype>
#include <cstring>



Terminal::Terminal(PinName tx, PinName rx, int baudrate) : serial(tx, rx)
{
    // Initialize certain values
    numCommands = 0;
    for (int i = 0; i < NUM_COMMANDS_MAX; i++)
    {
        cmdList[i].stringLength = 0;
    }
    
    // Set up serial connection
    serial.baud(baudrate);
    serial.attach(this, &Terminal::receive, Serial::RxIrq);
    serial.printf("\n> ");
}



void Terminal::addCommand(const char* cmdString, void (*fpointer)(Serial&, const char*) )
{
    if (numCommands < NUM_COMMANDS_MAX)
    {
        strncpy(cmdList[numCommands].cmdString, cmdString, INPUT_BUFFER_MAX);
        cmdList[numCommands].cmdString[INPUT_BUFFER_MAX - 1] = '\0'; // Make sure that the command string is null terminated
        cmdList[numCommands].stringLength = strlen(cmdList[numCommands].cmdString);
        cmdList[numCommands].fpointer = fpointer;
        numCommands++;
    }
    else
    {
        serial.printf("error: too many commands");
    }
}



void Terminal::receive()
{
    char c = serial.getc();
    int len = strlen(inputBuffer);
    
    if (isprint(c))
    {
        if (len < INPUT_BUFFER_MAX - 1)
        {
            inputBuffer[len] = c;
            inputBuffer[len + 1] = '\0';
            serial.putc(c);
        }
    }
    else if (c == '\b' || c == 127) // Backspace
    {
        if (len > 0)
        {
            inputBuffer[len - 1] = '\0';
            serial.printf("\b \b");
        }
    }
    else if (c == '\n')
    {
        serial.putc('\n');
        
        // Try to match the input string to a command, and call the associated function if a match is found
        for (int i = 0; i < NUM_COMMANDS_MAX; i++)
        {
            if (cmdList[i].stringLength && !strncmp(inputBuffer, cmdList[i].cmdString, cmdList[i].stringLength))
            {
                cmdList[i].fpointer(serial, inputBuffer);
                goto foundCommand;
            }
        }
        
        // No match was found
        serial.printf("unrecognized command");
        
        foundCommand:
        serial.printf("\n> ");
        inputBuffer[0] = '\0'; // Clear the input buffer
    }
}