Simon Pfeifhofer / C027_Support

* add C027_Support fork

Fork of C027_Support by u-blox

SerialPipe.cpp@139:b9a7b3f44734, 2016-09-10 (annotated)

Committer:
simonpfeifhofer
Date:
Sat Sep 10 10:12:25 2016 +0000
Revision:
139:b9a7b3f44734
Parent:
116:709a6386e685 
* fix parameter name

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mazgch 9:e7a5959ffae1 1 #include "SerialPipe.h"
mazgch 9:e7a5959ffae1 2
mazgch 74:208e3e32d263 3 SerialPipe::SerialPipe(PinName tx, PinName rx, int rxSize, int txSize) :
mazgch 74:208e3e32d263 4 _SerialPipeBase(tx,rx),
mazgch 74:208e3e32d263 5 _pipeRx( (rx!=NC) ? rxSize : 0),
mazgch 74:208e3e32d263 6 _pipeTx( (tx!=NC) ? txSize : 0)
mazgch 9:e7a5959ffae1 7 {
mazgch 74:208e3e32d263 8 if (rx!=NC)
mazgch 74:208e3e32d263 9 attach(this, &SerialPipe::rxIrqBuf, RxIrq);
mazgch 9:e7a5959ffae1 10 }
mazgch 9:e7a5959ffae1 11
mazgch 9:e7a5959ffae1 12 SerialPipe::~SerialPipe(void)
mazgch 9:e7a5959ffae1 13 {
mazgch 9:e7a5959ffae1 14 attach(NULL, RxIrq);
mazgch 9:e7a5959ffae1 15 attach(NULL, TxIrq);
mazgch 9:e7a5959ffae1 16 }
mazgch 9:e7a5959ffae1 17
mazgch 9:e7a5959ffae1 18 // tx channel
mazgch 13:e2446fcdc246 19 int SerialPipe::writeable(void)
mazgch 13:e2446fcdc246 20 {
mazgch 13:e2446fcdc246 21 return _pipeTx.free();
mazgch 13:e2446fcdc246 22 }
mazgch 13:e2446fcdc246 23
mazgch 13:e2446fcdc246 24 int SerialPipe::putc(int c)
mazgch 13:e2446fcdc246 25 {
mazgch 15:5eda64e5b9d1 26 c = _pipeTx.putc(c);
mazgch 15:5eda64e5b9d1 27 txStart();
mazgch 15:5eda64e5b9d1 28 return c;
mazgch 13:e2446fcdc246 29 }
mazgch 13:e2446fcdc246 30
mazgch 13:e2446fcdc246 31 int SerialPipe::put(const void* buffer, int length, bool blocking)
mazgch 9:e7a5959ffae1 32 {
mazgch 13:e2446fcdc246 33 int count = length;
mazgch 13:e2446fcdc246 34 const char* ptr = (const char*)buffer;
mazgch 15:5eda64e5b9d1 35 if (count)
mazgch 9:e7a5959ffae1 36 {
mazgch 15:5eda64e5b9d1 37 do
mazgch 15:5eda64e5b9d1 38 {
mazgch 15:5eda64e5b9d1 39 int written = _pipeTx.put(ptr, count, false);
mazgch 75:ce6e12067d0c 40 if (written) {
mazgch 75:ce6e12067d0c 41 ptr += written;
mazgch 75:ce6e12067d0c 42 count -= written;
mazgch 75:ce6e12067d0c 43 txStart();
mazgch 75:ce6e12067d0c 44 }
mazgch 75:ce6e12067d0c 45 else if (!blocking)
mazgch 75:ce6e12067d0c 46 break;
mazgch 95:8282dbbe1492 47 /* nothing / just wait */;
mazgch 15:5eda64e5b9d1 48 }
mazgch 75:ce6e12067d0c 49 while (count);
mazgch 9:e7a5959ffae1 50 }
mazgch 13:e2446fcdc246 51 return (length - count);
mazgch 13:e2446fcdc246 52 }
mazgch 13:e2446fcdc246 53
mazgch 70:0a87d256cd24 54 void SerialPipe::txCopy(void)
mazgch 9:e7a5959ffae1 55 {
mazgch 15:5eda64e5b9d1 56 while (_SerialPipeBase::writeable() && _pipeTx.readable())
mazgch 11:b084552b03fe 57 {
mazgch 13:e2446fcdc246 58 char c = _pipeTx.getc();
mazgch 15:5eda64e5b9d1 59 _SerialPipeBase::_base_putc(c);
mazgch 11:b084552b03fe 60 }
mazgch 9:e7a5959ffae1 61 }
mazgch 9:e7a5959ffae1 62
mazgch 70:0a87d256cd24 63 void SerialPipe::txIrqBuf(void)
mazgch 70:0a87d256cd24 64 {
mazgch 70:0a87d256cd24 65 txCopy();
mazgch 70:0a87d256cd24 66 // detach tx isr if we are done
mazgch 70:0a87d256cd24 67 if (!_pipeTx.readable())
mazgch 70:0a87d256cd24 68 attach(NULL, TxIrq);
mazgch 70:0a87d256cd24 69 }
mazgch 70:0a87d256cd24 70
mazgch 13:e2446fcdc246 71 void SerialPipe::txStart(void)
mazgch 13:e2446fcdc246 72 {
mazgch 70:0a87d256cd24 73 // disable the tx isr to avoid interruption
mazgch 70:0a87d256cd24 74 attach(NULL, TxIrq);
mazgch 70:0a87d256cd24 75 txCopy();
mazgch 70:0a87d256cd24 76 // attach the tx isr to handle the remaining data
mazgch 70:0a87d256cd24 77 if (_pipeTx.readable())
mazgch 70:0a87d256cd24 78 attach(this, &SerialPipe::txIrqBuf, TxIrq);
mazgch 13:e2446fcdc246 79 }
mazgch 13:e2446fcdc246 80
mazgch 9:e7a5959ffae1 81 // rx channel
mazgch 9:e7a5959ffae1 82 int SerialPipe::readable(void)
mazgch 9:e7a5959ffae1 83 {
mazgch 9:e7a5959ffae1 84 return _pipeRx.readable();
mazgch 9:e7a5959ffae1 85 }
mazgch 9:e7a5959ffae1 86
mazgch 9:e7a5959ffae1 87 int SerialPipe::getc(void)
mazgch 9:e7a5959ffae1 88 {
mazgch 15:5eda64e5b9d1 89 if (!_pipeRx.readable())
mazgch 15:5eda64e5b9d1 90 return EOF;
mazgch 15:5eda64e5b9d1 91 return _pipeRx.getc();
mazgch 13:e2446fcdc246 92 }
mazgch 13:e2446fcdc246 93
mazgch 13:e2446fcdc246 94 int SerialPipe::get(void* buffer, int length, bool blocking)
mazgch 13:e2446fcdc246 95 {
mazgch 13:e2446fcdc246 96 return _pipeRx.get((char*)buffer,length,blocking);
mazgch 13:e2446fcdc246 97 }
mazgch 13:e2446fcdc246 98
mazgch 9:e7a5959ffae1 99 void SerialPipe::rxIrqBuf(void)
mazgch 9:e7a5959ffae1 100 {
mazgch 15:5eda64e5b9d1 101 while (_SerialPipeBase::readable())
mazgch 9:e7a5959ffae1 102 {
mazgch 15:5eda64e5b9d1 103 char c = _SerialPipeBase::_base_getc();
mazgch 9:e7a5959ffae1 104 if (_pipeRx.writeable())
mazgch 13:e2446fcdc246 105 _pipeRx.putc(c);
mazgch 9:e7a5959ffae1 106 else
mazgch 9:e7a5959ffae1 107 /* overflow */;
mazgch 9:e7a5959ffae1 108 }
mazgch 9:e7a5959ffae1 109 }
mazgch 9:e7a5959ffae1 110