HUV bus interface board + dynamixel AX-12+ + c++

[sena]

Hi.

I tried to connect dynamixel AX -12+ with HUV interface and C++(Xcode).

I made a success in opening serial connection.

But I could not send data...

[StuartL]

This is probably best asked in the Robotis/Bioloid forum. I'll move this post.

[JonHylands]

sena,

What baud rate did you open the port at?

What bytes specifically are you sending?

Does either/both the green/red LED on the board light up when you send this command?

- Jon

[sena]

I open the port at 9600bps.

c++ code.

serial.writeByte('0xff');
serial.writeByte('0xff');
serial.writeByte('0x00');
serial.writeByte('0x05');
serial.writeByte('0x03');
serial.writeByte('0x11');
serial.writeByte('0x04');
serial.writeByte('0x04');
serial.writeByte('0xde');

Yes,both green LED and red LED are light up.

I’m a c++ beginner...

[JonHylands]

I open the port at 9600bps.

That's the first problem. You have to open the port at 1,000,000 bps.

- Jon

[sena]

I tried to open serial port at 1Mbps.

But I could select serial port up to 115200bps.

How do I make up to 1Mbps?

[StuartL]

I tried to open serial port at 1Mbps.

But I could select serial port up to 115200bps.

How do I make up to 1Mbps?

This sounds like an Xcode question. I've had a look and it looks mostly POSIX compatible, therefore I guess you're using an ioctl to set the serial baud rate?

If you can locate the header file that defines the constants for that ioctl() call you can find out if there's one for 1Mbit.

Update: Looks like it uses the standard 'B' constants, where 'B9600' is 9600 baud. Try 'B1000000' and see what happens

[sena]

I couldn't write code on termios.h

I found out ioctl.h and ioctl(int, unsigned long, ...);

Is it taking the place of serial's setup?

I want to know about ioctl.

[StuartL]

I want to know about ioctl.

I found lots of Xcode termios/serial/ioctl examples with google when I made the previous post.