Hi Jack, Excellent! yes, with that I can read all the data with casperfpfa 1024*8, and I can see a "proper" spectrum, but other issue appear (that I didn't notice before) while configuring the synthesizer with
adc.init(samplingRate=800, numChannel=1) it takes more than 20 secs, and on the tcpborph3 log I see a lots of repeating msgs of: no length specified, defaulting to data 4:0 bit checks: total register=2048 start_bits=32 copy_bits=32 raw write: bytes-in-buffer=4 register offset (0x4:0) len(0x4:0) it ends up returning "0", is this behavior ok? Thanks! El vie, 9 abr 2021 a las 12:45, Jack Hickish (<[email protected]>) escribió: > > Hi Guillermo, > > Interesting. So, if I understood your last few emails, you can read the whole > bram fine if you do so one word at a time. But if you read 512 bytes or more > things break. > > The answer is somewhere in bulk_read in spifpga_user.c, I think. But I > wonder, if you change MAX_BURST_SIZE (which I think reflects numbers of > 32-bit reads which are commanded at once from the SPI driver) to 64 (so a max > read per burst of 256 bytes) does that help? I'm not sure the tutorials were > ever tested with a pi rev 1 B+, so maybe there was always a problem with > large reads which was never noticed(?) > > Cheers > Jack > > > > > > On Fri, 9 Apr 2021 at 16:09, Guillermo Gancio <[email protected]> wrote: >> >> Hi Jack, >> >> I have been doing more tests, and I notice the following on the >> raspberry pi tcpborphserver3 Log.... >> >> When I do Casperfpga -> fpga.read('even',512,0) on the Rpi tcpb3 log I got: >> data added is 522, needed at least 10 + 513 >> >> Now if I do, fpga.read('even',1024*8,0), or any number of bytes larger >> than 512, on the Rpi tcpb3 log I got: >> can't send spi message! (error -1) >> >> Cheers, >> >> >> El mié, 7 abr 2021 a las 11:24, Jack Hickish (<[email protected]>) >> escribió: >> > >> > >> > >> > On Wed, 7 Apr 2021, 2:57 pm Guillermo Gancio, <[email protected]> wrote: >> >> >> >> Hi, >> >> >> >> I'm using the tutorials from >> >> https://github.com/casper-astro/tutorials_devel/tree/master/snap/tut_spec >> >> I just clone them and I got the same result, could be an issue with >> >> the katcp installation on the snap-raspberry? >> > >> > >> > You're using the prebuilt FPG file? It could be katcp I suppose - if you >> > read one word at a time, eg with CasperFpga.read_uint using an increasing >> > word_offset argument, how far can you read? >> > >> >> >> >> I'm also checking the casperfpga installation... >> >> >> >> Cheers. >> >> >> >> >> >> >> >> >> >> >> >> El mié, 7 abr 2021 a las 10:15, Jack Hickish (<[email protected]>) >> >> escribió: >> >> > >> >> > Hi Guillermo, >> >> > >> >> > If the values are 64 bits in the model, it is suspicious that the reads >> >> > are 1024*4 Bytes. I notice that in the latest tutorials_devel the reads >> >> > are 1024*8 bytes >> >> > (https://github.com/casper-astro/tutorials_devel/blob/2982f9f14bffa065a80d9047ec5cd7ea1ca3ad6c/snap/tut_spec/snap_tut_spec.py#L19) >> >> > >> >> > What version of the tutorial are you using -- it's possible that if the >> >> > version is old something else is wrong. >> >> > >> >> > Cheers >> >> > Jack >> >> > >> >> > On Wed, 7 Apr 2021 at 14:09, Guillermo Gancio <[email protected]> >> >> > wrote: >> >> >> >> >> >> Hi Jack, >> >> >> >> >> >> What I understand from the tutorial, and correct me if I'm wrong, is: >> >> >> Size of PFB and FFT, 2^12 i.e Re+Im 4096 channels, that's 2048 >> >> >> frequency channels after obtaining power values from the complex >> >> >> values. >> >> >> Those 2048 channels end up in two registers 'even' and 'odd' of 2^10 >> >> >> i.e. 1024 values each, each of this values is of 64bits, >> >> >> So I have to read 1024 * 8 = 8192 bits, from each register (even and >> >> >> odd). >> >> >> >> >> >> I compiled the project with those values and I got the same result as >> >> >> before, (read ok with 128*4 bits, ,fpga.read('even',128*4,0) ) >> >> >> >> >> >> Cheers >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> El mar, 6 abr 2021 a las 11:27, Jack Hickish (<[email protected]>) >> >> >> escribió: >> >> >> > >> >> >> > Hi Guillermo, >> >> >> > >> >> >> > How many channels is that tutorial supposed to generate? It looks >> >> >> > like the RAM is smaller than expected by the software. Is it >> >> >> > possible that each even/odd RAM is supposed to be 512*4 (i.e., 512 >> >> >> > words, each 32-bits wide) for 1024 channels total? >> >> >> > >> >> >> > Cheers >> >> >> > Jack >> >> >> > >> >> >> > On Mon, 5 Apr 2021 at 22:46, Guillermo Gancio <[email protected]> >> >> >> > wrote: >> >> >> >> >> >> >> >> Hi Casperities (?) >> >> >> >> >> >> >> >> I'm going thru the tutorial 3 on a snap board, and I have some >> >> >> >> issue/error while reading the 'odd' and 'even' register, >> >> >> >> when reading with >> >> >> >> -> a_0=struct.unpack('>1024l',fpga.read('even',1024*4,0)) >> >> >> >> >> >> >> >> I end up with the error >> >> >> >> -> Request: ?read odd 0 4096 >> >> >> >> -> Reply: !read fail >> >> >> >> >> >> >> >> but if I change the number of bytes to read from 1024*4 to 128*4, I >> >> >> >> can read it with no problem, ( but the data plot does not seem to be >> >> >> >> ok ). Also the accumulation value increments ok. >> >> >> >> >> >> >> >> Any thoughts? Thanks! >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> -- >> >> >> >> Instituto Argentino de Radioastronomia >> >> >> >> [Argentine Institute of Radioastronomy] >> >> >> >> >> >> >> >> Guillermo M. Gancio >> >> >> >> Responsable Área Observatorio >> >> >> >> [Head of Observatory] >> >> >> >> >> >> >> >> Tel: (0054-0221) 482-4903 Int: 106 >> >> >> >> Mail laboral [email protected] >> >> >> >> >> >> >> >> -- >> >> >> >> You received this message because you are subscribed to the Google >> >> >> >> Groups "[email protected]" group. >> >> >> >> To unsubscribe from this group and stop receiving emails from it, >> >> >> >> send an email to [email protected]. >> >> >> >> To view this discussion on the web visit >> >> >> >> https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CA%2BEePfTjY%2BZzCUWr_ksaGfNRSoVfeF251VRbLP4S5dkFSnddcA%40mail.gmail.com. >> >> >> > >> >> >> > -- >> >> >> > You received this message because you are subscribed to the Google >> >> >> > Groups "[email protected]" group. >> >> >> > To unsubscribe from this group and stop receiving emails from it, >> >> >> > send an email to [email protected]. >> >> >> > To view this discussion on the web visit >> >> >> > https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CAG1GKSk2tv25XinAy%3D0mt_WKY1s61p2qBOYLVsJ-%2B5j1twueQw%40mail.gmail.com. >> >> >> >> >> >> >> >> >> >> >> >> -- >> >> >> Instituto Argentino de Radioastronomia >> >> >> [Argentine Institute of Radioastronomy] >> >> >> >> >> >> Guillermo M. Gancio >> >> >> Responsable Área Observatorio >> >> >> [Head of Observatory] >> >> >> >> >> >> Tel: (0054-0221) 482-4903 Int: 106 >> >> >> Mail laboral [email protected] >> >> >> >> >> >> -- >> >> >> You received this message because you are subscribed to the Google >> >> >> Groups "[email protected]" group. >> >> >> To unsubscribe from this group and stop receiving emails from it, send >> >> >> an email to [email protected]. >> >> >> To view this discussion on the web visit >> >> >> https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CA%2BEePfQWfV6jG1pMSNeqxbh0z5J0jn%2BBOSLuiY7PWpdcdDDu5Q%40mail.gmail.com. >> >> > >> >> > -- >> >> > You received this message because you are subscribed to the Google >> >> > Groups "[email protected]" group. >> >> > To unsubscribe from this group and stop receiving emails from it, send >> >> > an email to [email protected]. >> >> > To view this discussion on the web visit >> >> > https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CAG1GKSkK_YPV3Pk11skAn49WEqG6pXs75q6QJfiH%3DTMqKpx6yw%40mail.gmail.com. >> >> >> >> >> >> >> >> -- >> >> Instituto Argentino de Radioastronomia >> >> [Argentine Institute of Radioastronomy] >> >> >> >> Guillermo M. Gancio >> >> Responsable Área Observatorio >> >> [Head of Observatory] >> >> >> >> Tel: (0054-0221) 482-4903 Int: 106 >> >> Mail laboral [email protected] >> >> >> >> -- >> >> You received this message because you are subscribed to the Google Groups >> >> "[email protected]" group. >> >> To unsubscribe from this group and stop receiving emails from it, send an >> >> email to [email protected]. >> >> To view this discussion on the web visit >> >> https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CA%2BEePfQp5uK4cz9Hm2_JpaLErw0rGy8LqyOYq%2Bi_XysyrP97cA%40mail.gmail.com. >> > >> > -- >> > You received this message because you are subscribed to the Google Groups >> > "[email protected]" group. >> > To unsubscribe from this group and stop receiving emails from it, send an >> > email to [email protected]. >> > To view this discussion on the web visit >> > https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CAG1GKSmuJwRMt_NOCz8XBbWrF0uR%2Bi7A7k5wBNq477V6vLqQww%40mail.gmail.com. >> >> >> >> -- >> Instituto Argentino de Radioastronomia >> [Argentine Institute of Radioastronomy] >> >> Guillermo M. Gancio >> Responsable Área Observatorio >> [Head of Observatory] >> >> Tel: (0054-0221) 482-4903 Int: 106 >> Mail laboral [email protected] >> >> -- >> You received this message because you are subscribed to the Google Groups >> "[email protected]" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CA%2BEePfSwkJYG7e%3DarWymU4Rm9TPSKSB-NOzZxFSOPoW9LEKAng%40mail.gmail.com. > > -- > You received this message because you are subscribed to the Google Groups > "[email protected]" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CAG1GKSnuZOfboGDmubcjiBg1-N5HxmkLpETgG%3DGWH1kGrvxY0A%40mail.gmail.com. -- Instituto Argentino de Radioastronomia [Argentine Institute of Radioastronomy] Guillermo M. Gancio Responsable Área Observatorio [Head of Observatory] Tel: (0054-0221) 482-4903 Int: 106 Mail laboral [email protected] -- You received this message because you are subscribed to the Google Groups "[email protected]" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CA%2BEePfRGHwh4A1iz7oh61LE0Ym55wDnnfaQtxuoALrJiraRN6Q%40mail.gmail.com.
