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AT terminal for the mDot using the USB debug port instead of the serial port.
Dependencies: MTS-Serial libmDot-mbed5
Fork of Dot-AT-Firmware by
ATSerial.cpp
- Committer:
- pferland
- Date:
- 2018-03-02
- Revision:
- 18:f5d28d621bb0
- Parent:
- 9:ff62b20f7000
File content as of revision 18:f5d28d621bb0:
#include "mbed.h" #include "ATSerial.h" #include "MTSLog.h" using namespace mts; ATSerial::ATSerial(PinName TXD, PinName RXD, int txBufferSize, int rxBufferSize) : MTSSerial(TXD, RXD, txBufferSize, rxBufferSize) , _serial(new RawSerial(TXD,RXD)), _baudrate(9600), _bits(8), _parity(mbed::SerialBase::None), _stop_bits(1), _last_time(0), _esc_cnt(0), _esc_ch('+'), _escaped(false) { timer.start(); _serial->attach(this, &ATSerial::handleRead, Serial::RxIrq); } ATSerial::~ATSerial() { delete _serial; } void ATSerial::baud(int baudrate) { _baudrate = baudrate; _serial->baud(_baudrate); } void ATSerial::format(int bits, SerialBase::Parity parity, int stop_bits) { _bits = bits; _parity = parity; _stop_bits = stop_bits; _serial->format(_bits, _parity, _stop_bits); } void ATSerial::handleWrite() { while(txBuffer.size() != 0) { if (_serial->writeable()) { char byte; if(txBuffer.read(byte) == 1) { _serial->attach(NULL, Serial::RxIrq); _serial->putc(byte); _serial->attach(this, &ATSerial::handleRead, Serial::RxIrq); } } else { return; } } } void mts::ATSerial::reattach(PinName TXD, PinName RXD) { delete _serial; _serial = new RawSerial(TXD, RXD); _serial->attach(this, &ATSerial::handleRead, Serial::RxIrq); _serial->baud(_baudrate); _serial->format(_bits, _parity, _stop_bits); rxBuffer.clear(); txBuffer.clear(); } void mts::ATSerial::sendBreak() { _serial->send_break(); } bool ATSerial::escaped() { int now = timer.read_ms(); // Have we seen three esc chars and 1 sec end guard has passed if (_escaped || (_esc_cnt == 3 && (now - _last_time > 1000))) { _escaped = true; return true; // Have we seen a couple esc chars but nothing in 500 ms } else if (_esc_cnt > 0 && _esc_cnt != 3 && now - _last_time > 500) { // Write seen esc chars while (_esc_cnt) { rxBuffer.write(_esc_ch); _esc_cnt--; } } return false; } void ATSerial::clearEscaped() { _esc_cnt = 0; _escaped = false; } void ATSerial::handleRead() { char byte = _serial->getc(); int now = timer.read_ms(); // Have we seen 3 esc chars but this char is before 1 sec end guard time if (_esc_cnt == 3 && (now - _last_time < 1000)) { // Write the three chars we held back while (_esc_cnt) { rxBuffer.write(_esc_ch); _esc_cnt--; } } else if (byte == _esc_ch) { // Has 1 second passed before last char if (now - _last_time > 1000) { _esc_cnt = 1; // Is this second or third esc char } else if (_esc_cnt > 0 && _esc_cnt < 3) { _esc_cnt++; } } else if (_esc_cnt > 0) { // Write any esc chars held back while (_esc_cnt) { rxBuffer.write(_esc_ch); _esc_cnt--; } } if(_esc_cnt == 0 && rxBuffer.write(byte) != 1) { // logError("Serial Rx Byte Dropped [%c][0x%02X]", byte, byte); } _last_time = timer.read_ms(); } void ATSerial::escapeChar(char esc) { _esc_ch = esc; } char ATSerial::escapeChar() { return _esc_ch; }