Diff: USBDevice/USBSerial/USBSerial.h

Revision:

0:de885a6da962

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBDevice/USBSerial/USBSerial.h	Fri Aug 29 08:38:36 2014 +0000
@@ -0,0 +1,161 @@
+/* Copyright (c) 2010-2011 mbed.org, MIT License
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+* and associated documentation files (the "Software"), to deal in the Software without
+* restriction, including without limitation the rights to use, copy, modify, merge, publish,
+* distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+* Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in all copies or
+* substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#ifndef USBSERIAL_H
+#define USBSERIAL_H
+
+#include "USBCDC.h"
+#include "Stream.h"
+#include "CircBuffer.h"
+
+
+/**
+* USBSerial example
+*
+* @code
+* #include "mbed.h"
+* #include "USBSerial.h"
+*
+* //Virtual serial port over USB
+* USBSerial serial;
+*
+* int main(void) {
+*
+*    while(1)
+*    {
+*        serial.printf("I am a virtual serial port\n");
+*        wait(1);
+*    }
+* }
+* @endcode
+*/
+class USBSerial: public USBCDC, public Stream {
+public:
+
+    /**
+    *   Constructor
+    *
+    * @param vendor_id Your vendor_id (default: 0x1f00)
+    * @param product_id Your product_id (default: 0x2012)
+    * @param product_release Your preoduct_release (default: 0x0001)
+    * @param connect_blocking define if the connection must be blocked if USB not plugged in
+    *
+    */
+    USBSerial(uint16_t vendor_id = 0x1f00, uint16_t product_id = 0x2012, uint16_t product_release = 0x0001, bool connect_blocking = true): USBCDC(vendor_id, product_id, product_release, connect_blocking), buf(128){
+        settingsChangedCallback = 0;
+    };
+
+
+    /**
+    * Send a character. You can use puts, printf.
+    *
+    * @param c character to be sent
+    * @returns true if there is no error, false otherwise
+    */
+    virtual int _putc(int c);
+    
+    /**
+    * Read a character: blocking
+    *
+    * @returns character read
+    */
+    virtual int _getc();
+    
+    /**
+    * Check the number of bytes available.
+    *
+    * @returns the number of bytes available
+    */
+    uint8_t available(); 
+
+    /** Determine if there is a character available to read
+     *
+     *  @returns
+     *    1 if there is a character available to read,
+     *    0 otherwise
+     */
+    int readable() { return available() ? 1 : 0; }
+    
+    /** Determine if there is space available to write a character
+     *
+     *  @returns
+     *    1 if there is space to write a character,
+     *    0 otherwise
+     */
+    int writeable() { return 1; } // always return 1, for write operation is blocking
+    
+    /**
+    * Write a block of data. 
+    *
+    * For more efficiency, a block of size 64 (maximum size of a bulk endpoint) has to be written.
+    *
+    * @param buf pointer on data which will be written
+    * @param size size of the buffer. The maximum size of a block is limited by the size of the endpoint (64 bytes)
+    *
+    * @returns true if successfull
+    */
+    bool writeBlock(uint8_t * buf, uint16_t size);
+
+    /**
+     *  Attach a member function to call when a packet is received. 
+     *
+     *  @param tptr pointer to the object to call the member function on
+     *  @param mptr pointer to the member function to be called
+     */
+    template<typename T>
+    void attach(T* tptr, void (T::*mptr)(void)) {
+        if((mptr != NULL) && (tptr != NULL)) {
+            rx.attach(tptr, mptr);
+        }
+    }
+
+    /**
+     * Attach a callback called when a packet is received
+     *
+     * @param fptr function pointer
+     */
+    void attach(void (*fptr)(void)) {
+        if(fptr != NULL) {
+            rx.attach(fptr);
+        }
+    }
+
+    /**
+     * Attach a callback to call when serial's settings are changed.
+     *
+     * @param fptr function pointer
+     */
+    void attach(void (*fptr)(int baud, int bits, int parity, int stop)) {
+        settingsChangedCallback = fptr;
+    }
+
+protected:
+    virtual bool EP2_OUT_callback();
+    virtual void lineCodingChanged(int baud, int bits, int parity, int stop){
+        if (settingsChangedCallback) {
+            settingsChangedCallback(baud, bits, parity, stop);
+        }
+    }
+
+private:
+    FunctionPointer rx;
+    CircBuffer<uint8_t> buf;
+    void (*settingsChangedCallback)(int baud, int bits, int parity, int stop);
+};
+
+#endif