Point Labs / USBDevice

adds a USB serial port to your design

Dependents:   Example_WatchDog_Timer

USBSerial/USBSerial.h@19:fcb63a105965, 2014-02-20 (annotated)

Committer:
mbed_official
Date:
Thu Feb 20 11:15:58 2014 +0000
Revision:
19:fcb63a105965
Parent:
15:849c0c0f2769
Child:
25:7c72828865f3
Child:
64:c7639faed2eb
Synchronized with git revision 87193889326571b560379153239787775654be59



Full URL: https://github.com/mbedmicro/mbed/commit/87193889326571b560379153239787775654be59/



libraries/USBSerial: Allow the USB connection to be non-blocking

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 1:80ab0d068708 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
samux 1:80ab0d068708 2 *
samux 1:80ab0d068708 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
samux 1:80ab0d068708 4 * and associated documentation files (the "Software"), to deal in the Software without
samux 1:80ab0d068708 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
samux 1:80ab0d068708 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
samux 1:80ab0d068708 7 * Software is furnished to do so, subject to the following conditions:
samux 1:80ab0d068708 8 *
samux 1:80ab0d068708 9 * The above copyright notice and this permission notice shall be included in all copies or
samux 1:80ab0d068708 10 * substantial portions of the Software.
samux 1:80ab0d068708 11 *
samux 1:80ab0d068708 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
samux 1:80ab0d068708 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
samux 1:80ab0d068708 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
samux 1:80ab0d068708 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
samux 1:80ab0d068708 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
samux 1:80ab0d068708 17 */
samux 1:80ab0d068708 18
samux 1:80ab0d068708 19 #ifndef USBSERIAL_H
samux 1:80ab0d068708 20 #define USBSERIAL_H
samux 1:80ab0d068708 21
samux 1:80ab0d068708 22 #include "USBCDC.h"
samux 1:80ab0d068708 23 #include "Stream.h"
samux 1:80ab0d068708 24 #include "CircBuffer.h"
samux 1:80ab0d068708 25
samux 1:80ab0d068708 26
samux 1:80ab0d068708 27 /**
samux 1:80ab0d068708 28 * USBSerial example
samux 1:80ab0d068708 29 *
samux 1:80ab0d068708 30 * @code
samux 1:80ab0d068708 31 * #include "mbed.h"
samux 1:80ab0d068708 32 * #include "USBSerial.h"
samux 1:80ab0d068708 33 *
samux 1:80ab0d068708 34 * //Virtual serial port over USB
samux 1:80ab0d068708 35 * USBSerial serial;
samux 1:80ab0d068708 36 *
samux 1:80ab0d068708 37 * int main(void) {
samux 1:80ab0d068708 38 *
samux 1:80ab0d068708 39 * while(1)
samux 1:80ab0d068708 40 * {
samux 1:80ab0d068708 41 * serial.printf("I am a virtual serial port\n");
samux 1:80ab0d068708 42 * wait(1);
samux 1:80ab0d068708 43 * }
samux 1:80ab0d068708 44 * }
samux 1:80ab0d068708 45 * @endcode
samux 1:80ab0d068708 46 */
samux 1:80ab0d068708 47 class USBSerial: public USBCDC, public Stream {
samux 1:80ab0d068708 48 public:
samux 1:80ab0d068708 49
samux 1:80ab0d068708 50 /**
samux 1:80ab0d068708 51 * Constructor
samux 1:80ab0d068708 52 *
samux 1:80ab0d068708 53 * @param vendor_id Your vendor_id (default: 0x1f00)
samux 1:80ab0d068708 54 * @param product_id Your product_id (default: 0x2012)
samux 1:80ab0d068708 55 * @param product_release Your preoduct_release (default: 0x0001)
mbed_official 19:fcb63a105965 56 * @param connect_blocking define if the connection must be blocked if USB not plugged in
samux 1:80ab0d068708 57 *
samux 1:80ab0d068708 58 */
mbed_official 19:fcb63a105965 59 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){
mbed_official 15:849c0c0f2769 60 settingsChangedCallback = 0;
mbed_official 15:849c0c0f2769 61 };
samux 1:80ab0d068708 62
samux 1:80ab0d068708 63
samux 1:80ab0d068708 64 /**
samux 1:80ab0d068708 65 * Send a character. You can use puts, printf.
samux 1:80ab0d068708 66 *
samux 1:80ab0d068708 67 * @param c character to be sent
samux 1:80ab0d068708 68 * @returns true if there is no error, false otherwise
samux 1:80ab0d068708 69 */
samux 1:80ab0d068708 70 virtual int _putc(int c);
samux 1:80ab0d068708 71
samux 1:80ab0d068708 72 /**
samux 1:80ab0d068708 73 * Read a character: blocking
samux 1:80ab0d068708 74 *
samux 1:80ab0d068708 75 * @returns character read
samux 1:80ab0d068708 76 */
samux 1:80ab0d068708 77 virtual int _getc();
samux 1:80ab0d068708 78
samux 1:80ab0d068708 79 /**
samux 1:80ab0d068708 80 * Check the number of bytes available.
samux 1:80ab0d068708 81 *
samux 1:80ab0d068708 82 * @returns the number of bytes available
samux 1:80ab0d068708 83 */
samux 1:80ab0d068708 84 uint8_t available();
mbed_official 15:849c0c0f2769 85
mbed_official 15:849c0c0f2769 86 /** Determine if there is a character available to read
mbed_official 15:849c0c0f2769 87 *
mbed_official 15:849c0c0f2769 88 * @returns
mbed_official 15:849c0c0f2769 89 * 1 if there is a character available to read,
mbed_official 15:849c0c0f2769 90 * 0 otherwise
mbed_official 15:849c0c0f2769 91 */
mbed_official 15:849c0c0f2769 92 int readable() { return available() ? 1 : 0; }
mbed_official 15:849c0c0f2769 93
mbed_official 15:849c0c0f2769 94 /** Determine if there is space available to write a character
mbed_official 15:849c0c0f2769 95 *
mbed_official 15:849c0c0f2769 96 * @returns
mbed_official 15:849c0c0f2769 97 * 1 if there is space to write a character,
mbed_official 15:849c0c0f2769 98 * 0 otherwise
mbed_official 15:849c0c0f2769 99 */
mbed_official 15:849c0c0f2769 100 int writeable() { return 1; } // always return 1, for write operation is blocking
samux 1:80ab0d068708 101
samux 1:80ab0d068708 102 /**
samux 1:80ab0d068708 103 * Write a block of data.
samux 1:80ab0d068708 104 *
samux 1:80ab0d068708 105 * For more efficiency, a block of size 64 (maximum size of a bulk endpoint) has to be written.
samux 1:80ab0d068708 106 *
samux 1:80ab0d068708 107 * @param buf pointer on data which will be written
samux 1:80ab0d068708 108 * @param size size of the buffer. The maximum size of a block is limited by the size of the endpoint (64 bytes)
samux 1:80ab0d068708 109 *
samux 1:80ab0d068708 110 * @returns true if successfull
samux 1:80ab0d068708 111 */
samux 1:80ab0d068708 112 bool writeBlock(uint8_t * buf, uint16_t size);
samux 1:80ab0d068708 113
samux 1:80ab0d068708 114 /**
samux 1:80ab0d068708 115 * Attach a member function to call when a packet is received.
samux 1:80ab0d068708 116 *
samux 1:80ab0d068708 117 * @param tptr pointer to the object to call the member function on
samux 1:80ab0d068708 118 * @param mptr pointer to the member function to be called
samux 1:80ab0d068708 119 */
samux 1:80ab0d068708 120 template<typename T>
samux 1:80ab0d068708 121 void attach(T* tptr, void (T::*mptr)(void)) {
samux 1:80ab0d068708 122 if((mptr != NULL) && (tptr != NULL)) {
samux 1:80ab0d068708 123 rx.attach(tptr, mptr);
samux 1:80ab0d068708 124 }
samux 1:80ab0d068708 125 }
samux 1:80ab0d068708 126
samux 1:80ab0d068708 127 /**
samux 1:80ab0d068708 128 * Attach a callback called when a packet is received
samux 1:80ab0d068708 129 *
samux 1:80ab0d068708 130 * @param fptr function pointer
samux 1:80ab0d068708 131 */
mbed_official 15:849c0c0f2769 132 void attach(void (*fptr)(void)) {
mbed_official 15:849c0c0f2769 133 if(fptr != NULL) {
mbed_official 15:849c0c0f2769 134 rx.attach(fptr);
samux 1:80ab0d068708 135 }
samux 1:80ab0d068708 136 }
samux 1:80ab0d068708 137
mbed_official 15:849c0c0f2769 138 /**
mbed_official 15:849c0c0f2769 139 * Attach a callback to call when serial's settings are changed.
mbed_official 15:849c0c0f2769 140 *
mbed_official 15:849c0c0f2769 141 * @param fptr function pointer
mbed_official 15:849c0c0f2769 142 */
mbed_official 15:849c0c0f2769 143 void attach(void (*fptr)(int baud, int bits, int parity, int stop)) {
mbed_official 15:849c0c0f2769 144 settingsChangedCallback = fptr;
mbed_official 15:849c0c0f2769 145 }
samux 1:80ab0d068708 146
samux 1:80ab0d068708 147 protected:
samux 1:80ab0d068708 148 virtual bool EP2_OUT_callback();
mbed_official 15:849c0c0f2769 149 virtual void lineCodingChanged(int baud, int bits, int parity, int stop){
mbed_official 15:849c0c0f2769 150 if (settingsChangedCallback) {
mbed_official 15:849c0c0f2769 151 settingsChangedCallback(baud, bits, parity, stop);
mbed_official 15:849c0c0f2769 152 }
mbed_official 15:849c0c0f2769 153 }
samux 1:80ab0d068708 154
samux 1:80ab0d068708 155 private:
samux 1:80ab0d068708 156 FunctionPointer rx;
samux 1:80ab0d068708 157 CircBuffer<uint8_t> buf;
mbed_official 15:849c0c0f2769 158 void (*settingsChangedCallback)(int baud, int bits, int parity, int stop);
samux 1:80ab0d068708 159 };
samux 1:80ab0d068708 160
samux 1:80ab0d068708 161 #endif