File content as of revision 2:1096fc8201a3:

#include "UsaPack.hpp"
#include "mbed.h"

void UsaPack::Receive()
{
    while (serial.readable())
    {
        char c;
        c = serial.getc();
        uart_buffer[uart_index] = c;
        uart_index = (uart_index + 1) % uart_size;
        if (c == '\0')
        {
            Decode();
            uart_index = 0;
        }
    }
}

void UsaPack::Decode()
{
    char data[uart_size];
    CobsDecode(uart_buffer, uart_index-2, data);
    union
    {
        char c[4];
        int a;
    } _address;
    for (int i = 0; i < 4; i++)
    {
        _address.c[i] = data[i];
    }
    for (int i = 0; i < package_index; i++)
    {
        if (package_address[i] == _address.a)
        {
            for (int j = 0; j < package_size[i]; j++)
            {
                *((char*)(package_object[i])+j) = data[j+4];
            }
            break;
        }
    }
}

UsaPack::UsaPack(PinName tx, PinName rx, int baud)
    :serial(tx, rx, baud), uart_index(0), package_index(0)
{
    serial.attach(this, &UsaPack::Receive, Serial::RxIrq);
    for (int i = 0; i < uart_size; i++)
    {
        uart_buffer[i] = '\0';
    }
}

void UsaPack::CobsEncode(char data[], int length, char send_data[])
{
    int last_zero = 0;
    for (int i = 0; i < length; i++)
    {
        if (data[i] == 0)
        {
            send_data[last_zero] = i - last_zero + 1;
            last_zero = i + 1;
        }
        else
        {
            send_data[i + 1] = data[i];
        }
    }
    send_data[last_zero] = length - last_zero + 1;
    send_data[length + 1] = 0;
}

void UsaPack::CobsDecode(char receive_data[], int length, char data[])
{
    int next_zero;
    next_zero = receive_data[0] - 1;
    for (int i = 0; i < length; i++)
    {
        data[i] = receive_data[i + 1];
    }
    while (next_zero < length)
    {
        data[next_zero] = 0;
        next_zero += receive_data[next_zero + 1];
    }
}