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Fix for Linux serial IO #45

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Fix for Linux serial IO #45

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67 changes: 31 additions & 36 deletions src/engine/ArduinoSerial.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -816,51 +816,46 @@ void ArduinoSerial::scanPortsThreadFunction(ArduinoSerial * selfRef, ArduinoSeri

//traditional setup of baud rates
//------------------------ traditional setup of baud rates for Mac and Linux --------------
/*cfsetispeed(&options, B230400);
/*
cfsetispeed(&options, B230400);
cfsetospeed(&options, B230400);
*/
// set the new port options
tcsetattr(portDescriptor, TCSANOW, &options);*/
tcsetattr(portDescriptor, TCSANOW, &options);
//------------------------ traditional setup of baud rates for Mac and Linux --------------

//--------------------------- Patch for Mac for nonstandard bauds --------------------------
speed_t speed = currentTestingBaudRate;//2000000; // Set 2Mbaud
if (ioctl(portDescriptor, IOSSIOSPEED, &speed) == -1) {
std::cout<<"Error setting speed";
}



/*

Explanation from blog post:
http://stackoverflow.com/questions/9366249/boostasioserialport-alternative-that-supports-non-standard-baud-rates

If you only want to use ioctl and termios you can do:

#define IOSSIOSPEED _IOW('T', 2, speed_t)
int new_baud = static_cast<int> (baudrate_);
ioctl (portDescriptor_, IOSSIOSPEED, &new_baud, 1);
And it will let you set the baud rate to any value in OS X, but that is OS specific. for Linux you need to do:

struct serial_struct ser;
ioctl (portDescriptor_, TIOCGSERIAL, &ser);
// set custom divisor
ser.custom_divisor = ser.baud_base / baudrate_;
// update flags
ser.flags &= ~ASYNC_SPD_MASK;
ser.flags |= ASYNC_SPD_CUST;
#endif

if (ioctl (portDescriptor_, TIOCSSERIAL, ser) < 0)
{
// error
}
For any other OS your gonna have to go read some man pages or it might not even work at all, its very OS dependent.
/*
// Linux and OSX/BSD have a set of default baudrates. We are using rates not in this list.
// Setting these non-standard rates requires some finagling
Explanation from blog post: http://stackoverflow.com/questions/9366249/boostasioserialport-alternative-that-supports-non-standard-baud-rates
*/

*/
#if defined(__linux__)
//--------------------------- Linux nonstandard bauds --------------------------
struct serial_struct ser;
ioctl (portDescriptor, TIOCGSERIAL, &ser);
// set custom divisor
ser.custom_divisor = ser.baud_base / currentTestingBaudRate;
// update flags
ser.flags &= ~ASYNC_SPD_MASK;
ser.flags |= ASYNC_SPD_CUST;

if (ioctl (portDescriptor, TIOCSSERIAL, ser) < 0)
{
std::cout<<"Error setting speed";
}
#endif

#if defined(__APPLE__)

//------------------- Mac for nonstandard bauds --------------------------
speed_t speed = currentTestingBaudRate;//2000000; // Set 2Mbaud
if (ioctl(portDescriptor, IOSSIOSPEED, &speed) == -1) {
std::cout<<"Error setting speed";
}

//--------------------------- Patch for Mac for nonstandard bauds --------------------------
#endif

#ifdef _WIN32
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