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/*
* Octave arduino serial interface
* Copyright (C) 2019 John Donoghue <john.donoghue@ieee.org>
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "settings.h"
#include "OctaveSerialLibrary.h"
#define ARDUINO_CONFIGSERIAL 1
#define ARDUINO_WRITESERIAL 2
#define ARDUINO_READSERIAL 3
#define ARDUINO_STATSERIAL 4
#ifdef USE_SERIAL
#if defined(ARDUINO_AVR_NANO_EVERY)
# ifndef SERIAL_PORT_HARDWARE_OPEN
# define SERIAL_PORT_HARDWARE_OPEN SERIAL_PORT_HARDWARE
# endif
#endif
#ifndef SERIAL_PORT_HARDWARE_OPEN
#error "This device does not support the serial octave serial interface"
#endif
#if defined(ARDUINO_SAM_DUE)
static USARTClass * serial[] = {
#else
static HardwareSerial * serial[] = {
#endif
#ifdef SERIAL_PORT_HARDWARE_OPEN1
0,
#endif
#ifdef SERIAL_PORT_HARDWARE_OPEN2
0,
#endif
#ifdef SERIAL_PORT_HARDWARE_OPEN3
0,
#endif
0
};
#define NUM_SERIAL_PORTS (sizeof(serial)/sizeof(HardwareSerial*))
#endif
OctaveSerialLibrary::OctaveSerialLibrary (OctaveArduinoClass &oc)
{
libName = "Serial";
oc.registerLibrary (this);
}
void
OctaveSerialLibrary::setup ()
{
#ifdef USE_SERIAL
serial[0] = &SERIAL_PORT_HARDWARE_OPEN;
#ifdef SERIAL_PORT_HARDWARE_OPEN1
serial[1] = &SERIAL_PORT_HARDWARE_OPEN1;
#endif
#ifdef SERIAL_PORT_HARDWARE_OPEN2
serial[2] = &SERIAL_PORT_HARDWARE_OPEN2;
#endif
#ifdef SERIAL_PORT_HARDWARE_OPEN3
serial[3] = &SERIAL_PORT_HARDWARE_OPEN3;
#endif
#endif
OctaveLibraryBase::setup ();
}
void
OctaveSerialLibrary::commandHandler (uint8_t cmdID, uint8_t* data, uint8_t datasz)
{
switch (cmdID)
{
#ifdef USE_SERIAL
case ARDUINO_WRITESERIAL:
{
if (datasz < 2 || datasz > 32)
{
// id
// data
sendInvalidNumArgsMsg ();
}
else if (data[0] < 1 || data[0] > NUM_SERIAL_PORTS)
{
sendErrorMsg_P (ERRORMSG_INVALID_DEVICE);
}
else
{
uint8_t id = data[0]-1;
serial[id]->write (&data[1], datasz-1);
data[1] = 1;
sendResponseMsg (cmdID, data, 2);
}
break;
}
case ARDUINO_READSERIAL:
{
if (datasz != 3)
{
// port
// numbytes
// timeout in 10th of second
sendInvalidNumArgsMsg ();
}
else if (data[0] < 1 || data[0] > NUM_SERIAL_PORTS)
{
sendErrorMsg_P (ERRORMSG_INVALID_DEVICE);
}
else
{
uint8_t id = data[0]-1;
uint8_t timeout = data[2];
byte c = 0;
byte l = data[1];
// if have a timeout, try wait that time for enough data before returning
if (timeout > 0)
{
sendWaitMsg ();
unsigned long t = millis();
unsigned long e = t + timeout * 100; // 10th of a seconf to millis
while (e > t && serial[id]->available() < l)
{
t = millis();
}
}
datasz = 1;
for (c=0; c<l; c++)
{
if (serial[id]->available ())
{
data[datasz] = serial[id]->read ();
datasz ++;
}
}
sendResponseMsg(cmdID,data, datasz);
}
break;
}
case ARDUINO_STATSERIAL:
{
if (datasz != 1)
{
// port
sendInvalidNumArgsMsg ();
}
else if (data[0] < 1 || data[0] > NUM_SERIAL_PORTS)
{
sendErrorMsg_P (ERRORMSG_INVALID_DEVICE);
}
else
{
uint8_t id = data[0]-1;
data[1] = serial[id]->available ();
sendResponseMsg (cmdID, data, 2);
}
break;
}
case ARDUINO_CONFIGSERIAL:
{
if (datasz > 0 && (data[0] < 1 || data[0] > NUM_SERIAL_PORTS))
{
sendErrorMsg_P(ERRORMSG_INVALID_DEVICE);
}
// enable
else if (datasz == 9 && data[1] == 1)
{
uint8_t id = data[0]-1;
// data[1] = enable
uint32_t baud = ((uint32_t)data[2]<<24) | ((uint32_t)data[3]<<16) | ((uint32_t)data[4]<<8) | data[5];
#if defined(ARDUINO_SAM_DUE) || defined(ARDUINO_ARCH_RP2040) || defined(ARDUINO_SAMD_MKR1000)
uint32_t conf = 0;
#else
uint8_t conf = 0;
#endif
// data[6] = databits
// data[7] = stopbits
// data[8] = parity
if (data[8] == 2) // parity even
{
if (data[7] == 1)
{
switch (data[6])
{
case 5: conf = SERIAL_5E1; break;
case 6: conf = SERIAL_6E1; break;
case 7: conf = SERIAL_7E1; break;
default: conf = SERIAL_8E1; break;
}
}
else // 2 stop bits
{
switch (data[6])
{
case 5: conf = SERIAL_5E2; break;
case 6: conf = SERIAL_6E2; break;
case 7: conf = SERIAL_7E2; break;
default: conf = SERIAL_8E2; break;
}
}
}
else if (data[8] == 1) // parity odd
{
if (data[7] == 1)
{
switch (data[6])
{
case 5: conf = SERIAL_5O1; break;
case 6: conf = SERIAL_6O1; break;
case 7: conf = SERIAL_7O1; break;
default: conf = SERIAL_8O1; break;
}
}
else // 2 stop bits
{
switch (data[6])
{
case 5: conf = SERIAL_5O2; break;
case 6: conf = SERIAL_6O2; break;
case 7: conf = SERIAL_7O2; break;
default: conf = SERIAL_8O2; break;
}
}
}
else // parity none
{
if (data[7] == 1)
{
switch (data[6])
{
case 5: conf = SERIAL_5N1; break;
case 6: conf = SERIAL_6N1; break;
case 7: conf = SERIAL_7N1; break;
default: conf = SERIAL_8N1; break;
}
}
else // 2 stop bits
{
switch (data[6])
{
case 5: conf = SERIAL_5N2; break;
case 6: conf = SERIAL_6N2; break;
case 7: conf = SERIAL_7N2; break;
default: conf = SERIAL_8N2; break;
}
}
}
#if defined(ARDUINO_SAM_DUE)
serial[id]->begin (baud, (USARTClass::USARTModes)conf);
#else
serial[id]->begin (baud, conf);
#endif
sendResponseMsg (cmdID, data, 2);
}
// disable
else if (datasz == 2 && data[1] == 0)
{
uint8_t id = data[0]-1;
serial[id]->end ();
sendResponseMsg (cmdID, data, 2);
}
else
{
sendInvalidNumArgsMsg ();
}
break;
}
#endif
default:
sendUnknownCmdIDMsg();
break;
}
}
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