uart.h

Go to the documentation of this file.

/*
 * atMETEO - An ATmega based weather station
 * Copyright (C) 2014-2015 Christian Fetzer
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#pragma once

#include <stdlib.h>

extern "C" {
    #include <external/uart/uart.h>
}

namespace Avr
{

template <uint16_t baud>
class Uart
{
public:
    static Uart& instance()
    {
        return s_instance;
    }

    void sendChar(unsigned char c)
    {
        uart0_putc(c);
    }

    void sendString(const char *str)
    {
        while (*str) {
            sendChar(*str);
            ++str;
        }
    }

    void sendLine(const char *str)
    {
        sendString(str);
        sendChar('\n');
    }

    void sendUInt(uint32_t value, uint8_t radix = 10)
    {
        char buffer[sizeof(uint32_t) * 8 + 1];
        ultoa(value, buffer, radix);
        sendString(buffer);
    }

    void sendValue(const char *description, uint32_t value, uint8_t radix = 10)
    {
        sendString(description);
        sendString(": ");
        sendUInt(value, radix);
        sendChar('\n');
    }

    void sendDouble(double value)
    {
        if (value > 9999 || value < -9999) value = -1;
        char buffer[8];
        dtostrf(value, 5, 2, buffer);
        sendString(buffer);
    }

private:
    static Uart s_instance;

    Uart()
    {
        uart0_init(UART_BAUD_SELECT(baud, F_CPU));
    }
};

template <uint16_t baud>
Uart<baud> Uart<baud>::s_instance = Uart();
  // \addtogroup libtarget_uart

}  // namespace Avr