100 lines
2.8 KiB
C
100 lines
2.8 KiB
C
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/*
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Copyright (c) 2013 Arduino LLC. All right reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef BRIDGE_H_
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#define BRIDGE_H_
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#include <Arduino.h>
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#include <Stream.h>
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class BridgeClass: public Stream {
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public:
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BridgeClass(Stream &_stream) : index(0), stream(_stream), started(false) {
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// Empty
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}
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void begin();
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uint8_t runCommand(String &command);
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bool commandIsRunning(uint8_t handle);
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unsigned int commandExitValue(uint8_t handle);
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void cleanCommand(uint8_t handle);
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unsigned int commandOutputAvailable(uint8_t handle);
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unsigned int readCommandOutput(uint8_t handle, uint8_t *buff, unsigned int size);
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unsigned int readCommandOutput(uint8_t handle, char *buff, unsigned int size)
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{ return readCommandOutput(handle, reinterpret_cast<uint8_t *>(buff), size); }
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void writeCommandInput(uint8_t handle, uint8_t *buff, unsigned int size);
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void writeCommandInput(uint8_t handle, char *buff, unsigned int size)
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{ writeCommandInput(handle, reinterpret_cast<uint8_t *>(buff), size); }
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// Print methods
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size_t write(uint8_t c) { return stream.write(c); }
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size_t write(const uint8_t *buffer, size_t size)
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{ return stream.write(buffer, size); }
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// Stream methods
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int available() { return stream.available(); }
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int read() { return stream.read(); }
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int peek() { return stream.peek(); }
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void flush() { stream.flush(); }
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uint8_t transfer(uint8_t *buff, uint8_t len, uint8_t *rxbuff=NULL, uint8_t rxlen=0);
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private:
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uint8_t index;
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int timedRead(unsigned int timeout);
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void dropAll();
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private:
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void crcUpdate(uint8_t c);
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void crcReset();
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void crcWrite();
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bool crcCheck(uint16_t _CRC);
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uint16_t CRC;
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private:
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static const char CTRL_C = 3;
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static const char CMD_RECV = 0x00;
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Stream &stream;
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bool started;
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};
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// This subclass uses a serial port Stream
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class SerialBridgeClass : public BridgeClass {
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public:
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SerialBridgeClass(HardwareSerial &_serial)
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: BridgeClass(_serial), serial(_serial) {
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// Empty
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}
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void begin() {
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serial.begin(115200);
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BridgeClass::begin();
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}
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private:
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HardwareSerial &serial;
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};
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extern SerialBridgeClass Bridge;
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#endif /* BRIDGE_H_ */
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