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/*
* File: uart.hpp
* Author: naopross
*
* Created on May 2, 2018, 7:04 PM
*
* Note: Non working or untested features are commented out with #if 0 .. #endif
*/
#ifndef UART_HPP
#define UART_HPP
#include <cstdint>
#include <cstddef>
#include <queue>
extern "C" {
void usart_1_isr();
void usart_2_isr();
void usart_3_isr();
void usart_4_isr();
}
namespace uart
{
const unsigned devices_count = 4;
#if 0
enum class status : unsigned int
{
rx_data_available = 1<<0,
rx_overrun_error = 1<<1,
framing_error = 1<<2,
parity_error = 1<<3,
receiver_ide = 1<<4,
tx_complete = 1<<8,
tx_full = 1<<9,
};
enum class transfer_status : unsigned int
{
rx_full = 1<<0,
rx_data_present = 1<<1,
rx_empty = 1<<2,
tx_full = 1<<3,
tx_empty = 1<<4,
};
#endif
bool _echo[devices_count];
std::queue<uint8_t> _rx_buffer[devices_count];
std::queue<uint8_t> _tx_buffer[devices_count];
// the following functions have been inlined
// template<unsigned dev>
// std::queue<uint8_t>& rx_buffer();
// template<unsigned dev>
// std::queue<uint8_t>& tx_buffer();
template<unsigned dev>
void initialize();
// the following functions have been inlined
// template<unsigned dev>
// void echo(bool enabled);
// template<unsigned dev>
// bool echo_enabled();
template<unsigned dev>
uint8_t read();
template<unsigned dev>
uint8_t read_wait();
#if 0
template<unsigned dev>
std::string read(const unsigned len);
template<unsigned dev>
std::string readline(const std::string &eol = "\n\r");
template<unsigned dev>
unsigned read(uint8_t *buffer, const unsigned numbytes);
#endif
template<unsigned dev>
void write(const uint8_t byte);
template<unsigned dev>
void write(const std::string &str);
template<unsigned dev>
unsigned write(const uint8_t *buffer, const unsigned numbytes);
template<unsigned dev>
void print(const std::string &str);
#if 0
template<unsigned dev>
status status();
template<unsigned dev>
transfer_status tranfer_status();
#endif
}
#endif /* UART_HPP */
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