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K60 RTS/CTS lines and MQX not working?

Question asked by JOHN ADAMSON on Sep 19, 2011
Latest reply on Sep 27, 2011 by JOHN ADAMSON

Any secrets to getting HW handshaking working on the K60N512 and MQX?  

 

What I have:

* A jumper on J13 7-8 on the TWR-SER board

* A jumper on J18 1-2 on the TWR-SER board

* The other standard jumpers for the K60 demos

* I open the port using fopen(devname, (char const *) IO_SERIAL_HW_FLOW_CONTROL);

* For kicks, I poll the hardware line using ioctl(dev, IO_IOCTL_SERIAL_GET_HW_SIGNAL, &signals) and test for IO_SERIAL_CTS and IO_SERIAL_RTS and the result of the test doesn't change, even though I can see the signal changing with a breakout box.  

* serial port is configured using the interrupt driver

 

Transmissions from the K60 board continue no matter the state of the external pins...which I guess makes sense if MQX can't see the proper state of the pins either.  

 

JPA

 

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