The pyusb tutorial has an example of using the control transfer functions. http://pyusb.sourceforge.net/docs/1.0/tutorial.html
>>> msg = 'test' >>> assert dev.ctrl_transfer(0x40, CTRL_LOOPBACK_WRITE, 0, 0, msg) == len(msg) >>> ret = dev.ctrl_transfer(0x40, CTRL_LOOPBACK_READ, 0, 0, len(msg)) >>> sret = ''.join([chr(x) for x in ret]) >>> assert sret == msg I was wondering if it would be better (or more efficient) to use some of the array functions. e.g. >>> sret = ''.join(ret.tolist()) or >>> sret = ret.tostring() Any thoughts on this ?? Also, just out of curiosity, what is the advantage of returning/using an array object rather than a string ?? Why is a string object used for WRITE instead of a string ?? The WRITE and READ transfers seem a little inconsistent in the object written and returned. Thanks, Brendan. ------------------------------------------------------------------------------ Enable your software for Intel(R) Active Management Technology to meet the growing manageability and security demands of your customers. Businesses are taking advantage of Intel(R) vPro (TM) technology - will your software be a part of the solution? Download the Intel(R) Manageability Checker today! http://p.sf.net/sfu/intel-dev2devmar _______________________________________________ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
