Re: [Discuss-gnuradio] Latest USRP2 firmware binaries updated
On Tue, Mar 2, 2010 at 23:28, Firas Abbas firasmail2...@yahoo.com wrote: I think USRP2 has a big (1 MByte) external static RAM. Yes, it does. But that's not where the embedded microprocessor instruction store is located. The aeMB reads instructions out of a 32K block ram inside the FPGA itself. It may be possible to use the SRAM as the code store and the block RAM as an I-cache, but that's a fairly significant amount of FPGA design work/modification, and cache-miss performance might be too slow. In any case, about 25% of code in the firmware (txrx.bin) is combined daughterboard management, like tuning control parameter calculation, etc. By breaking these out into individual images, most of that space is freed up for other things. Another option would have been to implement overlays, where the required daughterboard code is loaded into a common place in memory from the SD card after the unit detects which daughterboard is installed. There are other opportunities for improving the code size of the other 75%. It seems the Microblaze gcc port, at least the version we're using, is not that efficient at code generation. Patches always welcome :-) Johnathan ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Latest USRP2 firmware binaries updated
The most recent USRP2 binary firmware files based on 3.3git series have been posted. Changes: * Addition of WBX daughterboard support in USRP2 (Jason Abele, Ettus Research) * Addition of set_antenna() call in libusrp2/gr-usrp2 API, currently supported by the XCVR2450 only. (Josh Blum, Ettus Research) Due to size limitations, the support for the WBX and XCVR2450 daughterboards has been separated into distinct firmware images. Thus, USRP2 users will now need to select the firmware image file based the type of daughterboard they have installed. For all currently shipping daughterboards except the WBX and XCVR2450, use: http://gnuradio.org/releases/usrp2-bin/trunk/txrx.bin ...which currently points to: http://gnuradio.org/releases/usrp2-bin/trunk/txrx_edk10.1_3.3git-645-gb811e87.bin For an image that supports the WBX, LFTX/RX, and BasicTX/RX boards only, select: http://gnuradio.org/releases/usrp2-bin/trunk/txrx_wbx.bin ...which currently points to: http://gnuradio.org/releases/usrp2-bin/trunk/txrx_wbx_edk10.1_3.3git-645-gb811e87.bin For an image that supports the XCVR2450, LFTX/RX and BasicTX/RX boards only, select: http://gnuradio.org/releases/usrp2-bin/trunk/txrx_xcvr.bin ...which currently points to: http://gnuradio.org/releases/usrp2-bin/trunk/txrx_xcvr_edk10.1_3.3git-645-gb811e87.bin The most recently synthesized FPGA bitstream (unchanged) remains: http://gnuradio.org/releases/usrp2-bin/trunk/u2_rev3.bin ...which is the same for all daughterboards, and currently points to: http://gnuradio.org/releases/usrp2-bin/trunk/u2_rev3_ise10.1sp3_3.3git-594-g02616cf8.bin Please note that these binary files also require GNU Radio host code version 3.3git-645 (today's date) or newer. Johnathan Corgan Corgan Enterprises LLC ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Latest USRP2 firmware binaries updated
Hi, From: Johnathan Corgan jcor...@corganenterprises.com Due to size limitations, the support for the WBX and XCVR2450 daughterboards has been separated into distinct firmware images. Johnathan Corgan USRP2 RAM limitations? Or what limitations? Best Regards, Firas ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Latest USRP2 firmware binaries updated
On Tue, 2010-03-02 at 22:48 -0800, Firas Abbas wrote: Due to size limitations, the support for the WBX and XCVR2450 daughterboards has been separated into distinct firmware images. Johnathan Corgan USRP2 RAM limitations? Or what limitations? Yes, the code store for the embedded processor is limited to 32K. There is no longer enough room to have all daughterboard code present simultaneously. Johnathan ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Latest USRP2 firmware binaries updated
Hi, From: Johnathan Corgan jcor...@corganenterprises.com Due to size limitations, the support for the WBX and XCVR2450 daughterboards has been separated into distinct firmware images. Johnathan Corgan USRP2 RAM limitations? Or what limitations? Yes, the code store for the embedded processor is limited to 32K. There is no longer enough room to have all daughterboard code present simultaneously. Johnathan I think USRP2 has a big (1 MByte) external static RAM. Best Regards, Firas ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
