Inherit from Serial and use software buffers for TX and RX. This allows the UART peripherals to operate in a IRQ driven mode. Overrides most (but not all) stdio functions as Serial did
Revision 6:8287e83943f0, committed 2014-09-09
- Comitter:
- ansond
- Date:
- Tue Sep 09 20:20:38 2014 +0000
- Parent:
- 5:4d6a311fc8bf
- Child:
- 7:6fa214b41d73
- Commit message:
- added #define to change the base Serial class to RawSerial if desired
Changed in this revision
BufferedSerial.cpp | Show annotated file Show diff for this revision Revisions of this file |
BufferedSerial.h | Show annotated file Show diff for this revision Revisions of this file |
--- a/BufferedSerial.cpp Mon Mar 24 19:56:57 2014 +0000 +++ b/BufferedSerial.cpp Tue Sep 09 20:20:38 2014 +0000 @@ -24,17 +24,17 @@ #include <stdarg.h> BufferedSerial::BufferedSerial(PinName tx, PinName rx, const char* name) - : Serial(tx, rx, name) + : SERIAL_BASE(tx, rx) { - Serial::attach(this, &BufferedSerial::rxIrq, Serial::RxIrq); + SERIAL_BASE::attach(this, &BufferedSerial::rxIrq, Serial::RxIrq); return; } BufferedSerial::~BufferedSerial(void) { - Serial::attach(NULL, Serial::RxIrq); - Serial::attach(NULL, Serial::TxIrq); + SERIAL_BASE::attach(NULL, SERIAL_BASE::RxIrq); + SERIAL_BASE::attach(NULL, SERIAL_BASE::TxIrq); return; } @@ -125,7 +125,7 @@ serial_putc(&_serial, (int)_txbuf.get()); } else { // disable the TX interrupt when there is nothing left to send - Serial::attach(NULL, Serial::TxIrq); + SERIAL_BASE::attach(NULL, SERIAL_BASE::TxIrq); break; } } @@ -137,9 +137,9 @@ { // if already busy then the irq will pick this up if(serial_writable(&_serial)) { - Serial::attach(NULL, Serial::TxIrq); // make sure not to cause contention in the irq + SERIAL_BASE::attach(NULL, SERIAL_BASE::TxIrq); // make sure not to cause contention in the irq BufferedSerial::txIrq(); // only write to hardware in one place - Serial::attach(this, &BufferedSerial::txIrq, Serial::TxIrq); + SERIAL_BASE::attach(this, &BufferedSerial::txIrq, SERIAL_BASE::TxIrq); } return;
--- a/BufferedSerial.h Mon Mar 24 19:56:57 2014 +0000 +++ b/BufferedSerial.h Tue Sep 09 20:20:38 2014 +0000 @@ -27,6 +27,8 @@ #include "mbed.h" #include "Buffer.h" +#define SERIAL_BASE RawSerial + /** A serial port (UART) for communication with other serial devices * * Can be used for Full Duplex communication, or Simplex by specifying @@ -68,7 +70,7 @@ * @class BufferedSerial * @brief Software buffers and interrupt driven tx and rx for Serial */ -class BufferedSerial : public Serial +class BufferedSerial : public SERIAL_BASE { private: Buffer <char> _rxbuf;