/**
 * @brief Debug output via UART.
 *
 * Define `STA_DEBUG_SERIAL_ENABLE` in `<sta/config.hpp>` to enable.
 *
 * Defining `DEBUG` will automatically enable the module.
 * Defining `NDEBUG` will always force module to be disabled.
 *
 * Application must provide the sta::DebugSerial instance.
 * NOTE: Include this header before the definition because
 *       the default internal linkage of const namespace variables
 *       will cause undefined reference errors otherwise.
 */
#ifndef STA_DEBUG_SERIAL_HPP
#define STA_DEBUG_SERIAL_HPP

#include <sta/config.hpp>

#ifdef DEBUG
#  ifndef STA_DEBUG_SERIAL_ENABLE
#    define STA_DEBUG_SERIAL_ENABLE
#  endif // !STA_DEBUG_SERIAL_ENABLE
#endif // DEBUG

#ifdef NDEBUG
#  ifdef STA_DEBUG_SERIAL_ENABLE
#    undef STA_DEBUG_SERIAL_ENABLE
#  endif // STA_DEBUG_SERIAL_ENABLE
#endif // NDEBUG


#ifdef STA_DEBUG_SERIAL_ENABLE

#include <sta/uart.hpp>


namespace sta
{
	extern UART * const DebugSerial;
} // namespace sta


#  define STA_DEBUG_PRINT(...)      sta::DebugSerial->print(__VA_ARGS__)
#  define STA_DEBUG_PRINTLN(...)    sta::DebugSerial->println(__VA_ARGS__)
#  define STA_DEBUG_WRITE(b, s)     sta::DebugSerial->write(b, s)
#else // !STA_DEBUG_SERIAL_ENABLE
#  define STA_DEBUG_PRINT(...)      ((void)0)
#  define STA_DEBUG_PRINTLN(...)    ((void)0)
#  define STA_DEBUG_WRITE(b, s)     ((void)0)
#endif // !STA_DEBUG_SERIAL_ENABLE

#endif // STA_DEBUG_SERIAL_HPP