Diff: Serial.h

Revision:

0:a8fa94490a0a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Serial.h	Sat Sep 22 10:32:07 2012 +0000
@@ -0,0 +1,189 @@
+/* mbed Microcontroller Library - Serial
+ * Copyright (c) 2007-2011 ARM Limited. All rights reserved.
+ */ 
+ 
+#ifndef MBED_SERIAL_H
+#define MBED_SERIAL_H
+
+#include "device.h"
+
+#if DEVICE_SERIAL
+
+#include "platform.h"
+#include "PinNames.h"
+#include "PeripheralNames.h"
+#include "Stream.h"
+#include "FunctionPointer.h"
+
+namespace mbed {
+
+/* Class: Serial
+ *  A serial port (UART) for communication with other serial devices
+ *
+ * Can be used for Full Duplex communication, or Simplex by specifying 
+ * one pin as NC (Not Connected)
+ *
+ * Example:
+ * > // Print "Hello World" to the PC
+ * >
+ * > #include "mbed.h"
+ * >
+ * > Serial pc(USBTX, USBRX);
+ * >
+ * > int main() {
+ * >     pc.printf("Hello World\n");
+ * > }
+ */
+class Serial : public Stream {
+
+public:
+
+    /* Constructor: Serial
+     *  Create a Serial port, connected to the specified transmit and receive pins
+     *
+     * Variables:
+     *  tx - Transmit pin 
+     *  rx - Receive pin
+     *
+     *  Note: Either tx or rx may be specified as NC if unused
+     */
+    Serial(PinName tx, PinName rx, const char *name = NULL);
+
+    /* Function: baud
+     *  Set the baud rate of the serial port
+     *  
+     * Variables:
+     *  baudrate - The baudrate of the serial port (default = 9600).
+     */
+    void baud(int baudrate);
+
+    enum Parity {
+        None = 0
+        , Odd
+        , Even
+        , Forced1    
+        , Forced0
+    };
+
+    enum IrqType {
+        RxIrq = 0
+        , TxIrq
+    };
+
+    /* Function: format
+     *  Set the transmission format used by the Serial port
+     *
+     * Variables:
+     *  bits - The number of bits in a word (5-8; default = 8)
+     *  parity - The parity used (Serial::None, Serial::Odd, Serial::Even, Serial::Forced1, Serial::Forced0; default = Serial::None)
+     *  stop - The number of stop bits (1 or 2; default = 1)
+     */
+    void format(int bits = 8, Parity parity = Serial::None, int stop_bits = 1); 
+
+#if 0 // Inhereted from Stream, for documentation only
+
+    /* Function: putc
+     *  Write a character
+     *
+     * Variables:
+     *  c - The character to write to the serial port
+     */
+    int putc(int c);
+
+    /* Function: getc
+     *  Read a character
+     *
+     * Reads a character from the serial port. This will block until 
+     * a character is available. To see if a character is available, 
+     * see <readable>
+     *
+     * Variables:
+     *  returns - The character read from the serial port
+     */
+    int getc();
+
+    /* Function: printf
+     *  Write a formated string
+     *
+     * Variables:
+     *  format - A printf-style format string, followed by the 
+     *      variables to use in formating the string.
+     */
+    int printf(const char* format, ...);
+
+    /* Function: scanf
+     *  Read a formated string 
+     *
+     * Variables:
+     *  format - A scanf-style format string,
+     *      followed by the pointers to variables to store the results. 
+     */
+    int scanf(const char* format, ...);
+ 
+#endif
+ 
+    /* Function: readable
+     *  Determine if there is a character available to read
+     *
+     * Variables:
+     *  returns - 1 if there is a character available to read, else 0
+     */
+    int readable();
+
+    /* Function: writeable
+     *  Determine if there is space available to write a character
+     * 
+     * Variables:
+     *  returns - 1 if there is space to write a character, else 0
+     */
+    int writeable();
+
+    /* Function: attach
+     *  Attach a function to call whenever a serial interrupt is generated
+     *
+     * Variables:
+     *  fptr - A pointer to a void function, or 0 to set as none
+     *  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);
+
+    /* Function: attach
+     *  Attach a member function to call whenever a serial interrupt is generated
+     *     
+     * Variables:
+     *  tptr - pointer to the object to call the member function on
+     *  mptr - pointer to the member function to be called
+     *  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)) {
+            _irq[type].attach(tptr, mptr);
+            setup_interrupt(type);
+        }
+    }
+
+#ifdef MBED_RPC
+    virtual const struct rpc_method *get_rpc_methods();
+    static struct rpc_class *get_rpc_class();
+#endif
+
+protected:
+
+    void setup_interrupt(IrqType type);
+    void remove_interrupt(IrqType type);
+
+    virtual int _getc();
+    virtual int _putc(int c);
+
+    UARTName _uart;
+    FunctionPointer _irq[2];
+    int _uidx;
+
+};
+
+} // namespace mbed
+
+#endif
+
+#endif