mbed official / VodafoneUSBModem

Vodafone K3770/K3772-Z modems driver & networking library

Dependencies:   Socket USBHostWANDongle lwip-sys lwip

Dependents:   VodafoneUSBModemHTTPClientTest VodafoneUSBModemNTPClientTest VodafoneUSBModemSMSTest VodafoneUSBModemUSSDTest ... more

Fork of VodafoneUSBModem_bleedingedge by Donatien Garnier

This is the driver for the Vodafone K3700 & K3772-Z Dongles:

K3770

More details and instructions can be found here.

core/MtxCircBuffer.h@91:7b311719374d, 2013-09-20 (annotated)

Committer:
ashleymills
Date:
Fri Sep 20 10:40:58 2013 +0000
Revision:
91:7b311719374d
Parent:
16:02db4f537955 
Added support for Ublox LISA U200 module. Fixed bug for modules that throw away blocked unsolicited messages.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
donatien 16:02db4f537955 1 /* MtxCircBuf.h */
donatien 16:02db4f537955 2 /* Copyright (C) 2012 mbed.org, MIT License
donatien 16:02db4f537955 3 *
donatien 16:02db4f537955 4 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
donatien 16:02db4f537955 5 * and associated documentation files (the "Software"), to deal in the Software without restriction,
donatien 16:02db4f537955 6 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
donatien 16:02db4f537955 7 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
donatien 16:02db4f537955 8 * furnished to do so, subject to the following conditions:
donatien 16:02db4f537955 9 *
donatien 16:02db4f537955 10 * The above copyright notice and this permission notice shall be included in all copies or
donatien 16:02db4f537955 11 * substantial portions of the Software.
donatien 16:02db4f537955 12 *
donatien 16:02db4f537955 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
donatien 16:02db4f537955 14 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
donatien 16:02db4f537955 15 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
donatien 16:02db4f537955 16 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
donatien 16:02db4f537955 17 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
donatien 16:02db4f537955 18 */
donatien 16:02db4f537955 19
donatien 16:02db4f537955 20 #ifndef MTXCIRCBUFFER_H
donatien 16:02db4f537955 21 #define MTXCIRCBUFFER_H
donatien 16:02db4f537955 22
donatien 16:02db4f537955 23 #include "fwk.h"
donatien 16:02db4f537955 24
donatien 16:02db4f537955 25 #include "rtos.h"
donatien 16:02db4f537955 26
donatien 16:02db4f537955 27 //Mutex protected circualr buffer
donatien 16:02db4f537955 28 template<typename T, int size>
donatien 16:02db4f537955 29 class MtxCircBuffer
donatien 16:02db4f537955 30 {
donatien 16:02db4f537955 31 public:
donatien 16:02db4f537955 32 MtxCircBuffer() //:
donatien 16:02db4f537955 33 //mtx()
donatien 16:02db4f537955 34 {
donatien 16:02db4f537955 35 write = 0;
donatien 16:02db4f537955 36 read = 0;
donatien 16:02db4f537955 37 }
donatien 16:02db4f537955 38
donatien 16:02db4f537955 39 bool isFull()
donatien 16:02db4f537955 40 {
donatien 16:02db4f537955 41 mtx.lock();
donatien 16:02db4f537955 42 bool r = (((write + 1) % size) == read);
donatien 16:02db4f537955 43 mtx.unlock();
donatien 16:02db4f537955 44 return r;
donatien 16:02db4f537955 45 }
donatien 16:02db4f537955 46
donatien 16:02db4f537955 47 bool isEmpty()
donatien 16:02db4f537955 48 {
donatien 16:02db4f537955 49 mtx.lock();
donatien 16:02db4f537955 50 bool r = (read == write);
donatien 16:02db4f537955 51 mtx.unlock();
donatien 16:02db4f537955 52 return r;
donatien 16:02db4f537955 53 }
donatien 16:02db4f537955 54
donatien 16:02db4f537955 55 void queue(T k)
donatien 16:02db4f537955 56 {
ashleymills 91:7b311719374d 57 // XXX Some modems spew stuff out on multiple interfaces
ashleymills 91:7b311719374d 58 // which can cause the circular buffer to block if
ashleymills 91:7b311719374d 59 // the unread queues are not flushed. Need to make this
ashleymills 91:7b311719374d 60 // non-blocking: just overwrite oldest chars for example.
donatien 16:02db4f537955 61 mtx.lock();
donatien 16:02db4f537955 62 while (((write + 1) % size) == read) //if (isFull())
donatien 16:02db4f537955 63 {
donatien 16:02db4f537955 64 /*while((((write + 1) % size) == read))
donatien 16:02db4f537955 65 {*/
donatien 16:02db4f537955 66 mtx.unlock();
donatien 16:02db4f537955 67 Thread::wait(10);
donatien 16:02db4f537955 68 mtx.lock();
donatien 16:02db4f537955 69 /*}*/
donatien 16:02db4f537955 70 //read++;
donatien 16:02db4f537955 71 //read %= size;
donatien 16:02db4f537955 72 }
donatien 16:02db4f537955 73 buf[write++] = k;
donatien 16:02db4f537955 74 write %= size;
donatien 16:02db4f537955 75 mtx.unlock();
donatien 16:02db4f537955 76 }
donatien 16:02db4f537955 77
donatien 16:02db4f537955 78 uint16_t available()
donatien 16:02db4f537955 79 {
donatien 16:02db4f537955 80 mtx.lock();
donatien 16:02db4f537955 81 uint16_t a = (write >= read) ? (write - read) : (size - read + write);
donatien 16:02db4f537955 82 mtx.unlock();
donatien 16:02db4f537955 83 return a;
donatien 16:02db4f537955 84 }
donatien 16:02db4f537955 85
donatien 16:02db4f537955 86 bool dequeue(T * c)
donatien 16:02db4f537955 87 {
donatien 16:02db4f537955 88 mtx.lock();
donatien 16:02db4f537955 89 bool empty = (read == write);
donatien 16:02db4f537955 90 if (!empty)
donatien 16:02db4f537955 91 {
donatien 16:02db4f537955 92 *c = buf[read++];
donatien 16:02db4f537955 93 read %= size;
donatien 16:02db4f537955 94 }
donatien 16:02db4f537955 95 mtx.unlock();
donatien 16:02db4f537955 96 return (!empty);
donatien 16:02db4f537955 97 }
donatien 16:02db4f537955 98
donatien 16:02db4f537955 99 private:
donatien 16:02db4f537955 100 volatile uint16_t write;
donatien 16:02db4f537955 101 volatile uint16_t read;
donatien 16:02db4f537955 102 volatile T buf[size];
donatien 16:02db4f537955 103 Mutex mtx;
donatien 16:02db4f537955 104 };
donatien 16:02db4f537955 105
donatien 16:02db4f537955 106 #endif
donatien 16:02db4f537955 107