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thank u for your help, I realy need it. I am using the c5402 DSK, well i checked the HPIENA bit and i found that it is alreardy set to 1, I checked it be checking Data memory location 002Ch, the data their was 0088h, which means the both the HINT and HPIENA are both set to 1. I don't know how the HPIA and HPID can be configured correctly, all i know is that they are not accessible from the DSP, only from the Host. to make my question complete, I'm trying to read/write from/to the DSP memory from a C program developed with Visual Studio in an intel machine, this program uses the evmdsk54x.dll to do this communication. thanks for the help. >Date: Thu, 08 Jun 2000 09:43:13 -0400 >From: Yi Li <> >To: Mohamed Montasser <> >Subject: Re: [c54x] streaming data from host to target using HPI > >Which DSP are you using? I'm using C5402. It should be no problem to >access DSP memory through HPI, whether DSP is running or not. Make sure >you have enabled HPI by pull the HPIENA to high, and provided correct >data strobes. One problem might be you did not config the HPIC & HPIA >registers correctly. You can verify this by reading the HPIA. > >Good Luck >liyi > >Mohamed Montasser wrote: > >> hello all, >> >> I was intending to stream data from the PC to the target, shall i do >> this while the DSP is halted, or can it be done while the DSP is >> running. >> >> What happened to me is that the Code Composer Studio starts to give me >> >> error messages about target time out when i tried to read or write to >> the DSP >> memory from the host while the DSP is running...this is very critical >> for the project i'm currently working in, Please help me as quick as >> possible, it's realy urgent. >> thanks. >> bye. >> >> ----------------------------------- >> >> ----------------------------------- >> To Join: Send an email to >> >> To Post: Send an email to >> >> To Leave: Send an email to >> >> Archives: http://www.egroups.com/group/c54x >> >> Other Groups: http://www.dsprelated.com >> ------------------------ ------------------------ ************************************************************************ You're just seconds away from playing the web's FREE Million Dollar slot machine. Win MILLIONS in prizes INSTANTLY! Click Here Now! http://adserv.internetfuel.com/cgi-bin/newredirect.cgi?AD=EMAIL-jackpot ************************************************************************ |
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Still having problem with streaming data
Started by ●June 8, 2000
Reply by ●June 8, 20002000-06-08
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It's a little bit confusing -- are you using JTAG port to access DSP
memory or using HPI? I'm not familiar with the former, I can not help you in that case. If you are "streaming data from host to taget using HPI", you must provide correct data strobes and chip selection signals as defined in Chapter 8 of 'CPU and Peripherals' (Reference Set, Vol 1). The host can select to modify HPIC or HPIA by setting HCNTL[1:0]. liyi Mohamed Montasser wrote: > thank u for your help, I realy need it. > I am using the c5402 DSK, well i checked the HPIENA bit and i found that it is alreardy set to 1, I checked it be checking Data memory location 002Ch, the data their was 0088h, which means the both the HINT and HPIENA are both set to 1. > I don't know how the HPIA and HPID can be configured correctly, all i know is that they are not accessible from the DSP, only from the Host. > > to make my question complete, I'm trying to read/write from/to the DSP memory from a C program developed with Visual Studio in an intel machine, this program uses the evmdsk54x.dll to do this communication. > > thanks for the help. > > >Date: Thu, 08 Jun 2000 09:43:13 -0400 > >From: Yi Li <> > >To: Mohamed Montasser <> > >Subject: Re: [c54x] streaming data from host to target using HPI > > > >Which DSP are you using? I'm using C5402. It should be no problem to > >access DSP memory through HPI, whether DSP is running or not. Make sure > >you have enabled HPI by pull the HPIENA to high, and provided correct > >data strobes. One problem might be you did not config the HPIC & HPIA > >registers correctly. You can verify this by reading the HPIA. > > > >Good Luck > >liyi > > > >Mohamed Montasser wrote: > > > >> hello all, > >> > >> I was intending to stream data from the PC to the target, shall i do > >> this while the DSP is halted, or can it be done while the DSP is > >> running. > >> > >> What happened to me is that the Code Composer Studio starts to give me > >> > >> error messages about target time out when i tried to read or write to > >> the DSP > >> memory from the host while the DSP is running...this is very critical > >> for the project i'm currently working in, Please help me as quick as > >> possible, it's realy urgent. > >> thanks. > >> bye. > >> > >> ----------------------------------- > >> > >> ----------------------------------- > >> To Join: Send an email to > >> > >> To Post: Send an email to > >> > >> To Leave: Send an email to > >> > >> Archives: http://www.egroups.com/group/c54x > >> > >> Other Groups: http://www.dsprelated.com > >> > > ------------------------ > ------------------------ > > ************************************************************************ > You're just seconds away from playing the web's FREE Million Dollar slot > machine. Win MILLIONS in prizes INSTANTLY! Click Here Now! > http://adserv.internetfuel.com/cgi-bin/newredirect.cgi?AD=EMAIL-jackpot > ************************************************************************ > > To Join: Send an email to > > To Post: Send an email to > > To Leave: Send an email to > > Archives: http://www.egroups.com/group/c54x > > Other Groups: http://www.dsprelated.com |
Reply by ●June 8, 20002000-06-08
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I am using the HPI, i don't know about the JTAG port...Actually i am
using a Parallel port controller built on the DSK and through this PPC all communications occur with the HPI, there is a DLL called evmdsk54x.dll provided from texax, it contains functions that can be used to read/write to the DSP memory, different HPI registers...etc I am using this DLL to read/write to the DSP memory, when the DSP is halted it is just fine, otherwise problems occur... I don't have access to the bare pins of the DSP since it is surface mounted on the DSK, so i cannot adjust the strobe signals, neither i have access to the HCNTL pin, for example i am using a function called evmdsk54x_hpi_read() to read from the DSP memory, this function takes as parameters a memory location from which i want to read, a buffer to put the read data into and a HANDLE to the DSK, which is aquired by calling another function called evmdsk54x_open(), what i want to say is that i am doing the communication from a higher level, I hope u have done this before because i am realy stuck...I don't insist on continuing with this dll, it is just that i don't know what the other way is, if there is another way. thanks for the help and waiting from u. >Date: Thu, 08 Jun 2000 13:25:54 -0400 >From: Yi Li <> >To: Mohamed Montasser <> >CC: >Subject: Re: [c54x] Still having problem with streaming data > >It's a little bit confusing -- are you using JTAG port to access DSP memory or using HPI? >I'm not familiar with the former, I can not help you in that case. If you are "streaming data >from host to taget using HPI", you must provide correct data strobes and chip selection >signals as defined in Chapter 8 of 'CPU and Peripherals' (Reference Set, Vol 1). The host >can select to modify HPIC or HPIA by setting HCNTL[1:0]. > >liyi > >Mohamed Montasser wrote: > >> thank u for your help, I realy need it. >> I am using the c5402 DSK, well i checked the HPIENA bit and i found that it is alreardy set to 1, I checked it be checking Data memory location 002Ch, the data their was 0088h, which means the both the HINT and HPIENA are both set to 1. >> I don't know how the HPIA and HPID can be configured correctly, all i know is that they are not accessible from the DSP, only from the Host. >> >> to make my question complete, I'm trying to read/write from/to the DSP memory from a C program developed with Visual Studio in an intel machine, this program uses the evmdsk54x.dll to do this communication. >> >> thanks for the help. >> >> >Date: Thu, 08 Jun 2000 09:43:13 -0400 >> >From: Yi Li <> >> >To: Mohamed Montasser <> >> >Subject: Re: [c54x] streaming data from host to target using HPI >> > >> >Which DSP are you using? I'm using C5402. It should be no problem to >> >access DSP memory through HPI, whether DSP is running or not. Make sure >> >you have enabled HPI by pull the HPIENA to high, and provided correct >> >data strobes. One problem might be you did not config the HPIC & HPIA >> >registers correctly. You can verify this by reading the HPIA. >> > >> >Good Luck >> >liyi >> > >> >Mohamed Montasser wrote: >> > >> >> hello all, >> >> >> >> I was intending to stream data from the PC to the target, shall i do >> >> this while the DSP is halted, or can it be done while the DSP is >> >> running. >> >> >> >> What happened to me is that the Code Composer Studio starts to give me >> >> >> >> error messages about target time out when i tried to read or write to >> >> the DSP >> >> memory from the host while the DSP is running...this is very critical >> >> for the project i'm currently working in, Please help me as quick as >> >> possible, it's realy urgent. >> >> thanks. >> >> bye. >> >> >> >> ----------------------------------- >> >> >> >> ----------------------------------- >> >> To Join: Send an email to >> >> >> >> To Post: Send an email to >> >> >> >> To Leave: Send an email to >> >> >> >> Archives: http://www.egroups.com/group/c54x >> >> >> >> Other Groups: http://www.dsprelated.com >> >> >> >> ------------------------ >> ------------------------ >> >> ************************************************************************ >> You're just seconds away from playing the web's FREE Million Dollar slot >> machine. Win MILLIONS in prizes INSTANTLY! Click Here Now! >> http://adserv.internetfuel.com/cgi-bin/newredirect.cgi?AD=EMAIL-jackpot >> ************************************************************************ >> >> To Join: Send an email to >> >> To Post: Send an email to >> >> To Leave: Send an email to >> >> Archives: http://www.egroups.com/group/c54x >> >> Other Groups: http://www.dsprelated.com ------------------------ ------------------------ ************************************************************************ You're just seconds away from playing the web's FREE Million Dollar slot machine. Win MILLIONS in prizes INSTANTLY! Click Here Now! http://adserv.internetfuel.com/cgi-bin/newredirect.cgi?AD=EMAIL-jackpot ************************************************************************ |
Reply by ●June 9, 20002000-06-09
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----- Original Message ----- From: "Mohamed Montasser" <> To: <>; <> Sent: Thursday, June 08, 2000 5:30 PM Subject: RE: Re: [c54x] Still having problem with streaming data > I am using the HPI, i don't know about the JTAG port...Actually i am using a Parallel port controller built on the DSK and through this PPC all communications occur with the HPI, there is a DLL called evmdsk54x.dll provided from texax, it contains functions that can be used to read/write to the DSP memory, different HPI registers...etc > I am using this DLL to read/write to the DSP memory, when the DSP is halted it is just fine, otherwise problems occur... > I don't have access to the bare pins of the DSP since it is surface mounted on the DSK, so i cannot adjust the strobe signals, neither i have access to the HCNTL pin, > for example i am using a function called evmdsk54x_hpi_read() to read from the DSP memory, this function takes as parameters a memory location from which i want to read, a buffer to put the read data into and a HANDLE to the DSK, which is aquired by calling another function called evmdsk54x_open(), what i want to say is that i am doing the communication from a higher level, I hope u have done this before because i am realy stuck...I don't insist on continuing with this dll, it is just that i don't know what the other way is, if there is another way. > thanks for the help and waiting from u. > As far as I know, parralel port controller on 5402 DSK is a JTAG controller, simular to what you find on JTAG emulators, and it's connected to JTAG port of DSP, not HPI. I think you should doublecheck that. Mike. |
Reply by ●June 10, 20002000-06-10
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This is not true. The parallel port controller (PPC34C60) provides an ISA-like local interface between the parallel port and the DSK circuitry. The JTAG test bus controller and the DSP's HPI port are both mapped into the local interface, so you can access JTAG TBC registers and HPI registers through the PC's parallel port. The PPC provides multiple chip selects, two of which are used to access the DSP HPI and the JTAG TBC. There is no hardware reason why you can't talk to both devices in a time division fashion. However, there may be software driver limitations on who it can access during a certain period of time. Brian Mikhail F wrote: > > As far as I know, parralel port controller on 5402 DSK is a JTAG controller, > simular to what you find on JTAG emulators, and it's connected to JTAG port > of DSP, not HPI. I think you should doublecheck that. > > Mike. > Click here for savings: beMANY! > http://click.egroups.com/1/4557/1/_/16164/_/960557826/ > To Join: Send an email to > > To Post: Send an email to > > To Leave: Send an email to > > Archives: http://www.egroups.com/group/c54x > > Other Groups: http://www.dsprelated.com |
