ardupilot/libraries/AP_HAL/utility/Stream.h

26 lines
668 B
C++

#ifndef __AP_HAL_UTILITY_STREAM_H__
#define __AP_HAL_UTILITY_STREAM_H__
#include <AP_HAL/AP_HAL_Namespace.h>
#include "Print.h"
/* A simple Stream library modeled after the bits we actually use
* from Arduino Stream */
class AP_HAL::Stream : public AP_HAL::Print {
public:
virtual int16_t available() = 0;
/* NB txspace was traditionally a member of BetterStream in the
* FastSerial library. As far as concerns go, it belongs with available() */
virtual int16_t txspace() = 0;
/* return value for read():
* -1 if nothing available, uint8_t value otherwise. */
virtual int16_t read() = 0;
};
#endif // __AP_HAL_UTILITY_STREAM_H__