A library for talking to Multi-Tech's Cellular SocketModem Devices.
Dependents: M2X_dev axeda_wrapper_dev MTS_M2x_Example1 MTS_Cellular_Connect_Example ... more
io/MTSSerialFlowControl.cpp@84:77c5ab16534d, 2013-12-27 (annotated)
- Committer:
- sgodinez
- Date:
- Fri Dec 27 15:51:19 2013 +0000
- Revision:
- 84:77c5ab16534d
- Parent:
- 78:ef3ee53cf5df
- Child:
- 85:b17ad6781c5b
Employed RTS threshold algorithm. Removed header guards from cpp files.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
jengbrecht | 0:563b70517320 | 1 | #include "MTSSerialFlowControl.h" |
jengbrecht | 0:563b70517320 | 2 | |
mfiore | 39:6e94520a3217 | 3 | using namespace mts; |
mfiore | 39:6e94520a3217 | 4 | |
mfiore | 10:2bd727a4b329 | 5 | MTSSerialFlowControl::MTSSerialFlowControl(PinName TXD, PinName RXD, PinName RTS, PinName CTS, int txBufSize, int rxBufSize, char* name) : MTSBufferedIO(txBufSize, rxBufSize), if_name(name) |
jengbrecht | 0:563b70517320 | 6 | { |
mfiore | 2:8d3ea0dfce39 | 7 | serial = new Serial(TXD, RXD); |
mfiore | 3:0caed9526d24 | 8 | serial->attach(this, &MTSSerialFlowControl::handleRead, Serial::RxIrq); |
mfiore | 10:2bd727a4b329 | 9 | //serial->attach(this, &MTSSerialFlowControl::handleWrite, Serial::TxIrq); |
jengbrecht | 45:40745c2036cf | 10 | |
sgodinez | 78:ef3ee53cf5df | 11 | rts = new DigitalOut(RTS); |
sgodinez | 78:ef3ee53cf5df | 12 | cts = new DigitalIn(CTS); |
mfiore | 10:2bd727a4b329 | 13 | notifyStartSending(); |
jengbrecht | 45:40745c2036cf | 14 | |
sgodinez | 84:77c5ab16534d | 15 | highThreshold = MAX(rxBufSize - 10, rxBufSize * 0.85); |
mfiore | 2:8d3ea0dfce39 | 16 | lowThreshold = rxBufSize * 0.3; |
jengbrecht | 45:40745c2036cf | 17 | |
mfiore | 2:8d3ea0dfce39 | 18 | rxBuffer->attach(this, &MTSSerialFlowControl::notifyStartSending, lowThreshold, Vars::LESS); |
mfiore | 2:8d3ea0dfce39 | 19 | } |
mfiore | 2:8d3ea0dfce39 | 20 | |
jengbrecht | 45:40745c2036cf | 21 | MTSSerialFlowControl::~MTSSerialFlowControl() |
jengbrecht | 45:40745c2036cf | 22 | { |
mfiore | 2:8d3ea0dfce39 | 23 | delete rts; |
mfiore | 2:8d3ea0dfce39 | 24 | delete cts; |
mfiore | 2:8d3ea0dfce39 | 25 | delete serial; |
mfiore | 2:8d3ea0dfce39 | 26 | } |
mfiore | 2:8d3ea0dfce39 | 27 | |
jengbrecht | 45:40745c2036cf | 28 | void MTSSerialFlowControl::baud(int baudrate) |
jengbrecht | 45:40745c2036cf | 29 | { |
mfiore | 10:2bd727a4b329 | 30 | serial->baud(baudrate); |
mfiore | 10:2bd727a4b329 | 31 | } |
mfiore | 10:2bd727a4b329 | 32 | |
jengbrecht | 45:40745c2036cf | 33 | void MTSSerialFlowControl::format(int bits, SerialBase::Parity parity, int stop_bits) |
jengbrecht | 45:40745c2036cf | 34 | { |
jengbrecht | 45:40745c2036cf | 35 | serial->format(bits, parity, stop_bits); |
jengbrecht | 45:40745c2036cf | 36 | } |
jengbrecht | 45:40745c2036cf | 37 | |
jengbrecht | 45:40745c2036cf | 38 | void MTSSerialFlowControl::notifyStartSending() |
jengbrecht | 45:40745c2036cf | 39 | { |
sgodinez | 78:ef3ee53cf5df | 40 | rts->write(0); |
sgodinez | 78:ef3ee53cf5df | 41 | //printf("RTS: START SENDING US BYTES - RX[%d]\r\n", rxBuffer->size()); |
mfiore | 2:8d3ea0dfce39 | 42 | } |
mfiore | 2:8d3ea0dfce39 | 43 | |
jengbrecht | 45:40745c2036cf | 44 | void MTSSerialFlowControl::notifyStopSending() |
jengbrecht | 45:40745c2036cf | 45 | { |
sgodinez | 78:ef3ee53cf5df | 46 | rts->write(1); |
sgodinez | 78:ef3ee53cf5df | 47 | //printf("RTS: STOP SENDING US BYTES - RX[%d]\r\n", rxBuffer->size()); |
mfiore | 2:8d3ea0dfce39 | 48 | } |
mfiore | 2:8d3ea0dfce39 | 49 | |
jengbrecht | 45:40745c2036cf | 50 | void MTSSerialFlowControl::handleRead() |
jengbrecht | 45:40745c2036cf | 51 | { |
jengbrecht | 77:d7b14688a704 | 52 | |
mfiore | 10:2bd727a4b329 | 53 | while (serial->readable()) { |
mfiore | 10:2bd727a4b329 | 54 | rxBuffer->write(serial->getc()); |
jengbrecht | 77:d7b14688a704 | 55 | if (rxBuffer->size() > highThreshold) { |
jengbrecht | 77:d7b14688a704 | 56 | notifyStopSending(); |
jengbrecht | 77:d7b14688a704 | 57 | } |
mfiore | 2:8d3ea0dfce39 | 58 | } |
mfiore | 2:8d3ea0dfce39 | 59 | } |
mfiore | 2:8d3ea0dfce39 | 60 | |
jengbrecht | 45:40745c2036cf | 61 | void MTSSerialFlowControl::handleWrite() |
jengbrecht | 45:40745c2036cf | 62 | { |
jengbrecht | 77:d7b14688a704 | 63 | |
jengbrecht | 77:d7b14688a704 | 64 | while(txBuffer->size() != 0) { |
sgodinez | 78:ef3ee53cf5df | 65 | if (serial->writeable() && cts->read() == 0) { |
jengbrecht | 77:d7b14688a704 | 66 | char byte; |
jengbrecht | 77:d7b14688a704 | 67 | if(txBuffer->read(byte) == 1) { |
jengbrecht | 77:d7b14688a704 | 68 | serial->putc(byte); |
mfiore | 2:8d3ea0dfce39 | 69 | } |
jengbrecht | 77:d7b14688a704 | 70 | } else { |
jengbrecht | 77:d7b14688a704 | 71 | return; |
mfiore | 2:8d3ea0dfce39 | 72 | } |
mfiore | 2:8d3ea0dfce39 | 73 | } |
jengbrecht | 77:d7b14688a704 | 74 | |
sgodinez | 84:77c5ab16534d | 75 | } |