Robotis RX-64 with gumstix

[NEVER]

I am a university student. I am running a robotis RX-64 motor with gumstix overo earth(www.gumstix.com) through RX/TX pins. The motor responds to SYNC WRITE mode but fails to respond to individual READ or WRITE packets.
please help..

also, how can i read the status packets returned by the motor?

[Bullit]

What baud rate are you using?

[NEVER]

I am using a baudrate of 1Mbps

[limor]

Atmel's 1mhz UART is very precise compared to other implementations.
How does OMAP do UART at 1mhz? (what is the basic UART clock and what divider it uses to do 1mhz).
You can try and connect a USB2Dynamixel (USB-FTDI <--> atmega-UART) and see if it works. If it does then it may be the issue with the clock rate.

[Bullit]

It seems to me the OMAP goes to 921k baud max and that error is too large to communicate properly to dynamixels at 1M baud. This is why we use an ftdi module.

[NEVER]

I tried it again with both arduino mega (atmega1280) and also with USB2dynamixel but none seem to be able to run the RX-64 motor with READ or WRITE DATA modes eventhough SYNC WRITE works fine again.

[Bullit]

Never: your code in all cases?