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Hello all. I have a problem which i desperatley need some help. I'm using a daughter board which is connected to the 5402 dsk, and i am defining an ioport to read from, but every transaction i try to make doesn't work. I have checked with logic analyzer, and on read cycle, i am putting the right data on the data bus, but when the dsk io_strobe goes up, it doesn't sample the correct value, infact a constact value is read at all times. again on writing, when i assign to the port a value, only zeros comes to the data bus. Have any one dealt with similar problem before? Thanks in advance. Segev Eran. |
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DaughterBoard integration with a C5402 DSK
Started by ●January 21, 2002
Reply by ●January 22, 20022002-01-22
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Is the DMSEL setting correct? Before accessing any external memory, the DMSEL must be set HIGH. It's on the user option DIP switches, and it also mapped at address 0x0002. ----- Original Message ----- From: "eran segev" <> To: <> Sent: Monday, January 21, 2002 10:09 PM Subject: [c54x] DaughterBoard integration with a C5402 DSK Hello all. I have a problem which i desperatley need some help. I'm using a daughter board which is connected to the 5402 dsk, and i am defining an ioport to read from, but every transaction i try to make doesn't work. I have checked with logic analyzer, and on read cycle, i am putting the right data on the data bus, but when the dsk io_strobe goes up, it doesn't sample the correct value, infact a constact value is read at all times. again on writing, when i assign to the port a value, only zeros comes to the data bus. Have any one dealt with similar problem before? Thanks in advance. Segev Eran. _____________________________________ Note: If you do a simple "reply" with your email client, only the author of this message will receive your answer. You need to do a "reply all" if you want your answer to be distributed to the entire group. _____________________________________ About this discussion group: To Join: Send an email to To Post: Send an email to To Leave: Send an email to Archives: http://www.yahoogroups.com/group/c54x Other Groups: http://www.dsprelated.com ">http://docs.yahoo.com/info/terms/ |
Reply by ●January 23, 20022002-01-23
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You are not alone. I have had numerous problems with the 5402DSKs daughter board interface. Its in the CPLD. TI can't give out the code. Its propritary.. I'm sure they had a outside vender do the design. I'd be interested in who. Some of the problems are documented at http://www.signalware.com/dsp/DSP_5402.html After contacting signalware for a fix they said they gave up on the project. I finally decided to disable the UART and patched the daughter board into its io space. What a mess Thats where I'm at now I would be very interested in hearing others problems. Phil --- eran segev <> wrote: > Hello all. > I have a problem which i desperatley need some > help. > I'm using a daughter board which is connected to > the > 5402 > dsk, and i am defining an ioport to read from, but > every > transaction i try to make doesn't work. > I have checked with logic analyzer, and on read > cycle, > i am putting the right data on the data bus, but > when > the dsk io_strobe goes up, it doesn't sample the > correct > value, infact a constact value is read at all > times. > again on writing, when i assign to the port a > value, > only zeros comes to the data bus. > Have any one dealt with similar problem before? > Thanks in advance. > Segev Eran. > > > _____________________________________ > Note: If you do a simple "reply" with your email > client, only the author of this message will receive > your answer. You need to do a "reply all" if you > want your answer to be distributed to the entire > group. > > _____________________________________ > About this discussion group: > > To Join: Send an email to > To Post: Send an email to > > To Leave: Send an email to > Archives: http://www.yahoogroups.com/group/c54x > > Other Groups: http://www.dsprelated.com > ">http://docs.yahoo.com/info/terms/ __________________________________________________ |
