David Caruth wrote: > Hi All. > > I've been trying to use the DBSRX daughterboard in slot A but am > running into some trouble while reading the status bytes of the Maxim > chip via i2c. The code I'm using to control the USRP is written in > Visual C++ 2005, and I've been able to talk to the TVRX daughterboard > with no problems. I added the c++ code to mimic the set_freq, set_gain, > etc... commands in db_dbs_rx.py, and seem to be able to adjust the gain > and bandwidth for the Maxim chip ok. The problem comes when I try to > use the set_freq command, which does a read_i2c which returns the two > status bytes as ints. I've done a side-by-side comparison with the > python script running on the same machine under Windows XP where I > monitor the register number and the value as commands are sent, and I > see my code executing exactly the same as the python script usrp_fft.py, > except that the status bytes returned by my code are 0, 127 as opposed > to the returned bytes in the python code of 8, 127. I don't think I'm > doing > anything dumb with char to int conversions either in my code. Because > I get 0 for the first byte all the time, my while loop to set the > adc_val continues until it returns false, and the frequency never gets > set. The python script usrp_fft.py runs with no problems and I can > set_freq just fine. I have searched this forum for i2c errors and dbs > problems, but have not found anything like my problem. I'm sure I have > the correct i2c address set as well. Any suggestions? Please don't > suggest that I just use the python script... :) > > Thanks a lot!
David, I am trying to setup USRP w/RFX2400 db to work in visual C++. Would I be able to get a copy of your Visual C++ code to use as a guidline on what to do? Thanks -- Posted via http://www.ruby-forum.com/. _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
