Fahad Mirza
MODSERIAL with support for more devices
Diff: MODSERIAL.h
- Revision:
- 18:21ef26402365
- Parent:
- 17:6c9b57c14868
- Child:
- 19:a158936322cc
diff -r 6c9b57c14868 -r 21ef26402365 MODSERIAL.h
--- a/MODSERIAL.h Tue Mar 08 01:42:25 2011 +0000
+++ b/MODSERIAL.h Thu Apr 21 09:20:41 2011 +0000
@@ -45,6 +45,135 @@
namespace AjK {
+// Forward reference.
+class MODSERIAL;
+
+/**
+ * @author Andy Kirkham
+ * @see http://mbed.org/cookbook/MODSERIAL
+ * @see example3a.cpp
+ * @see example3b.cpp
+ * @see API
+ *
+ * <b>MODSERIAL_IRQ_INFO</b> is a class used to pass information (and access to protected
+ * MODSERIAL functions) to IRQ callbacks.
+ */
+class MODSERIAL_IRQ_INFO
+{
+public:
+ friend class MODSERIAL;
+
+ MODSERIAL *serial;
+
+ MODSERIAL_IRQ_INFO() { serial = 0; }
+
+ /** rxDiscardLastChar()
+ *
+ * Remove the last char placed into the rx buffer.
+ * This is an operation that can only be performed
+ * by an rxCallback function.
+ * @ingroup API
+ * @return The byte removed from the buffer.
+ */
+ int rxDiscardLastChar(void);
+
+protected:
+
+ /** setSerial()
+ *
+ * Used internally by MODSERIAL to set the "this" pointer
+ * of the MODSERIAL that created this object.
+ * @ingroup INTERNAL
+ * @param A pointer to a MODSERIAL object instance.
+ */
+ void setSerial(MODSERIAL *s) { serial = s; }
+};
+
+// Forward reference dummy class.
+class MODSERIAL_callback_dummy;
+
+/**
+ * @author Andy Kirkham
+ * @see http://mbed.org/cookbook/MODSERIAL
+ * @see example3a.cpp
+ * @see example3b.cpp
+ * @see API
+ *
+ * <b>MODSERIAL_callback</b> is a class used to hold application callbacks that
+ * MODSERIAL can invoke on certain events.
+ */
+class MODSERIAL_callback
+{
+protected:
+
+ //! C callback function pointer.
+ void (*c_callback)(MODSERIAL_IRQ_INFO *);
+
+ //! C++ callback object/method pointer (the object part).
+ MODSERIAL_callback_dummy *obj_callback;
+
+ //! C++ callback object/method pointer (the method part).
+ void (MODSERIAL_callback_dummy::*method_callback)(MODSERIAL_IRQ_INFO *);
+
+public:
+
+ /** Constructor
+ */
+ MODSERIAL_callback() {
+ c_callback = 0;
+ obj_callback = 0;
+ method_callback = 0;
+ }
+
+ /** attach - Overloaded attachment function.
+ *
+ * Attach a C type function pointer as the callback.
+ *
+ * Note, the callback function prototype must be:-
+ * @code
+ * void myCallbackFunction(MODSERIAL_IRQ_INFO *);
+ * @endcode
+ * @param A C function pointer to call.
+ */
+ void attach(void (*function)(MODSERIAL_IRQ_INFO *) = 0) { c_callback = function; }
+
+ /** attach - Overloaded attachment function.
+ *
+ * Attach a C++ type object/method pointer as the callback.
+ *
+ * Note, the callback method prototype must be:-
+ * @code
+ * public:
+ * void myCallbackFunction(MODSERIAL_IRQ_INFO *);
+ * @endcode
+ * @param A C++ object pointer.
+ * @param A C++ method within the object to call.
+ */
+ template<class T>
+ void attach(T* item, void (T::*method)(MODSERIAL_IRQ_INFO *)) {
+ obj_callback = (MODSERIAL_callback_dummy *)item;
+ method_callback = (void (MODSERIAL_callback_dummy::*)(MODSERIAL_IRQ_INFO *))method;
+ }
+
+ /** call - Overloaded callback initiator.
+ *
+ * call the callback function.
+ *
+ * @param uint32_t The value to pass to the callback.
+ * @return uint32_t The value the callback returns.
+ */
+ void call(MODSERIAL_IRQ_INFO *arg) {
+ if (c_callback != 0) {
+ (*c_callback)(arg);
+ }
+ else {
+ if (obj_callback != 0 && method_callback != 0) {
+ (obj_callback->*method_callback)(arg);
+ }
+ }
+ }
+};
+
/**
* @author Andy Kirkham
* @see http://mbed.org/cookbook/MODSERIAL
@@ -113,6 +242,9 @@
{
public:
+ // Allow instances of MODSERIAL_IRQ_INFO to use protected properties and methods.
+ friend class MODSERIAL_IRQ_INFO;
+
//! A copy of the Serial parity enum
/** @see http://mbed.org/projects/libraries/api/mbed/trunk/Serial#Serial.format */
enum Parity {
@@ -231,7 +363,7 @@
* @param fptr A pointer to a void function, or 0 to set as none
* @param type Which serial interrupt to attach the member function to (Seriall::RxIrq for receive, TxIrq for transmit buffer empty)
*/
- void attach(void (*fptr)(void), IrqType type = RxIrq) { _isr[type].attach(fptr); }
+ void attach(void (*fptr)(MODSERIAL_IRQ_INFO *), IrqType type = RxIrq) { _isr[type].attach(fptr); }
/**
* Function: attach
@@ -293,8 +425,8 @@
* @param type Which serial interrupt to attach the member function to (Seriall::RxIrq for receive, TxIrq for transmit buffer empty)
*/
template<typename T>
- void attach(T* tptr, void (T::*mptr)(void), IrqType type = RxIrq) {
- if((mptr != NULL) && (tptr != NULL)) {
+ void attach(T* tptr, uint32_t (T::*mptr)(uint32_t), IrqType type = RxIrq) {
+ if((mptr != 0) && (tptr != 0)) {
_isr[type].attach(tptr, mptr);
}
}
@@ -303,15 +435,15 @@
* @see attach
* @ingroup API
*/
- void connect(void (*fptr)(void), IrqType type = RxIrq) { _isr[RxIrq].attach(fptr); }
+ void connect(void (*fptr)(MODSERIAL_IRQ_INFO *), IrqType type = RxIrq) { _isr[RxIrq].attach(fptr); }
/**
* @see attach
* @ingroup API
*/
template<typename T>
- void connect(T* tptr, void (T::*mptr)(void), IrqType type = RxIrq) {
- if((mptr != NULL) && (tptr != NULL)) {
+ void connect(T* tptr, void (T::*mptr)(MODSERIAL_IRQ_INFO *), IrqType type = RxIrq) {
+ if((mptr != 0) && (tptr != 0)) {
_isr[type].attach(tptr, mptr);
}
}
@@ -646,8 +778,28 @@
*/
int scanf(const char* format, ...);
#endif
+
+protected:
+ /**
+ * Used to pass information to callbacks.
+ * @ingroup INTERNALS
+ */
+ MODSERIAL_IRQ_INFO callbackInfo;
+
+ /**
+ * Remove the last char placed into the rx buffer.
+ * This is an operation that can only be performed
+ * by an rxCallback function. To protect the buffers
+ * this function is defined protected so that a
+ * regular application cannot call it directly. It
+ * can only be called by the public version within a
+ * MODSERIAL_IRQ_INFO class.
+ * @ingroup INTERNALS
+ * @return The byte removed from the buffer.
+ */
+ int rxDiscardLastChar(void);
-protected:
+private:
/**
* A pointer to the UART peripheral base address being used.
@@ -713,7 +865,7 @@
* Callback system.
* @ingroup INTERNALS
*/
- FunctionPointer _isr[NumOfIrqTypes];
+ MODSERIAL_callback _isr[NumOfIrqTypes];
/**
* TX Interrupt Service Routine.
@@ -745,7 +897,7 @@
* @ingroup INTERNALS
*/
void enableIrq(void);
-
+
/**
* Get a character from the RX buffer
* @ingroup INTERNALS
@@ -885,7 +1037,7 @@
* @param fptr A function pointer to call
* @return this
*/
- void attach_dmaSendComplete(void (*fptr)(void)) {
+ void attach_dmaSendComplete(void (*fptr)(MODSERIAL_IRQ_INFO *)) {
_isrDmaSendComplete.attach(fptr);
}
@@ -898,13 +1050,13 @@
* @return this
*/
template<typename T>
- void attach_dmaSendComplete(T* tptr, void (T::*mptr)(void)) {
+ void attach_dmaSendComplete(T* tptr, void (T::*mptr)(MODSERIAL_IRQ_INFO *)) {
if((mptr != NULL) && (tptr != NULL)) {
_isrDmaSendComplete.attach(tptr, mptr);
}
}
- FunctionPointer _isrDmaSendComplete;
+ MODSERIAL_callback _isrDmaSendComplete;
protected:
/**
@@ -921,7 +1073,7 @@
if (dma->irqType() == MODDMA::TcIrq) dma->clearTcIrq();
if (dma->irqType() == MODDMA::ErrIrq) dma->clearErrIrq();
dmaSendChannel = -1;
- _isrDmaSendComplete.call();
+ _isrDmaSendComplete.call(&this->callbackInfo);
delete(config);
}