Hi all,
I'm having a lot to do with USB. USB descriptors are always given in 8-bit words. But the C55x is 16-bit DSP and 8-bit data (Uint8) is aligned on 16-bit. Is there any way to conveniently fill Uint16 arrays given a sequence of 8-bit words?
For example, I should put this sequence into a Uint16:
0x85, 0x44, // REPORT_ID (Feature)
0x06, 0x00, 0xff, // USAGE_PAGE (Vendor Defined)
0x09, 0xC5, // USAGE (Vendor Usage 0xC5)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x26, 0xff, 0x00, // LOGICAL_MAXIMUM (0xff)
0x75, 0x08, // REPORT_SIZE (8)
0x96, 0x00, 0x01, // REPORT_COUNT (0x100 (256))
0xb1, 0x02, // FEATURE (Data,Var,Abs)
Which results in
0x4485,
0x0006,
0x09FF,
0x15C5,
0x2600,
0x00FF,
0x0875,
0x0096,
0xb101,
0x0002
I don't like that because it complicates development and debug a lot...
I have first been using a script to handle this, but is not my favorite option since (easier for development, but for debug not very easy again), then I have been using a macro for each pair of 8-bit words, but it is not my preferred option as well.
Do you have any ideas how to handle this the easiest way such that I can just stick a descriptor in its standard 8-bit word format into C55x code and it'll work w/o having to call external scripts, or doing manual swapping etc.?
Thanks for all your help
Best regards,
Andreas
