c79e543c41
* Move to Arduino API 10501 Track upstream Arduino API headers * IPAddress V4/V6 compatiblity restored * Fix WiFiUDP includes * String differences in example * HardwareSerial using exported
98 lines
2.4 KiB
C++
98 lines
2.4 KiB
C++
/*
|
|
SerialSemi.h - Serial port over Semihosting for ARM
|
|
Copyright (c) 2024 Earle F. Philhower, III. All rights reserved.
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
This library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with this library; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "Semihosting.h"
|
|
|
|
#include "Arduino.h"
|
|
#include "api/HardwareSerial.h"
|
|
|
|
class SerialSemiClass : public arduino::HardwareSerial {
|
|
public:
|
|
SerialSemiClass() {
|
|
/* noop */
|
|
}
|
|
|
|
~SerialSemiClass() {
|
|
/* noop */
|
|
}
|
|
|
|
void begin(unsigned long baudIgnored = 115200) override {
|
|
(void)baudIgnored;
|
|
}
|
|
|
|
void begin(unsigned long baudIgnored, uint16_t configIgnored) override {
|
|
(void)baudIgnored;
|
|
(void)configIgnored;
|
|
}
|
|
|
|
void end() override {
|
|
/* noop */
|
|
}
|
|
|
|
virtual int peek() override {
|
|
// Can't really peek on SH, so fake it best we can
|
|
if (!_peeked) {
|
|
_peekedChar = read();
|
|
_peeked = true;
|
|
}
|
|
return _peekedChar;
|
|
}
|
|
|
|
virtual int read() override {
|
|
if (_peeked) {
|
|
_peeked = false;
|
|
return _peekedChar;
|
|
}
|
|
return Semihost(SEMIHOST_SYS_READC, nullptr);
|
|
}
|
|
|
|
virtual int available() override {
|
|
// Can't really tell with SH, so always true. Buyer beware
|
|
return 1;
|
|
}
|
|
|
|
virtual int availableForWrite() override {
|
|
// Can't really tell with SH, so always true. Buyer beware
|
|
return 1;
|
|
}
|
|
|
|
virtual void flush() override {
|
|
/* noop */
|
|
}
|
|
|
|
virtual size_t write(uint8_t c) override {
|
|
int32_t param = c;
|
|
Semihost(SEMIHOST_SYS_WRITEC, ¶m);
|
|
return 1;
|
|
}
|
|
|
|
using Print::write;
|
|
|
|
operator bool() override {
|
|
return true;
|
|
}
|
|
|
|
private:
|
|
bool _peeked = false;
|
|
uint8_t _peekedChar;
|
|
};
|
|
|
|
extern SerialSemiClass SerialSemi;
|