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Hi i'm working on ADSP-2188M, i use Visual DSP++ 3.0 IDE. i'm also using Program Memory Overlays. My project is combination of C & Assembly routines. Most of the work is done in C, only ISRs are written in Assembly. Tx & Rx ISRs call C function. When i run my project onto the device, Error message appears: EZ-ICE Driver Host warning message 074 Executive_ DSP chip reset required to clear stack overflow condition. if anybody knows the solution or faced such error kindly guide me. thanx in anticipation. Talha Hassan |
Stack Overflow Condition
Started by ●December 25, 2004
Reply by ●December 25, 20042004-12-25
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At which stage does the warning appear? When loading? When starting the IDDE session? During execution? Regards, JaaC --- talhahassankhan <> wrote: > > > Hi > i'm working on ADSP-2188M, i use Visual DSP++ 3.0 > IDE. i'm also using > Program Memory Overlays. My project is combination > of C & Assembly > routines. Most of the work is done in C, only ISRs > are written in > Assembly. Tx & Rx ISRs call C function. When i run > my project onto the > device, Error message appears: > EZ-ICE Driver > Host warning message 074 > Executive_ DSP chip reset required to clear stack > overflow condition. > > if anybody knows the solution or faced such error > kindly guide me. > thanx in anticipation. > > Talha Hassan ===== Jaime Andr Aranguren Cardona __________________________________ |
Reply by ●December 27, 20042004-12-27
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It appears during execution ... during project execution when i halt the project (shift + F5) this message appears. if i dont halt the project it continues executing but the output is not correct. also i saw "incorrect" values of variables like value of "reset_flag" (any variable) is "8245" altough variable can be either 0 or 1. also program memory overlay "PMOVLAY" value is 053C means not correct. thanx --- Jaime Andres Aranguren Cardona <> wrote: > > At which stage does the warning appear? When > loading? > When starting the IDDE session? During execution? > > Regards, > > JaaC > > --- talhahassankhan <> > wrote: > > > > > > > Hi > > i'm working on ADSP-2188M, i use Visual DSP++ 3.0 > > IDE. i'm also using > > Program Memory Overlays. My project is combination > > of C & Assembly > > routines. Most of the work is done in C, only ISRs > > are written in > > Assembly. Tx & Rx ISRs call C function. When i run > > my project onto the > > device, Error message appears: > > EZ-ICE Driver > > Host warning message 074 > > Executive_ DSP chip reset required to clear > stack > > overflow condition. > > > > if anybody knows the solution or faced such error > > kindly guide me. > > thanx in anticipation. > > > > Talha Hassan > > ===== > > Jaime Andr Aranguren Cardona > > __________________________________ __________________________________ |
Reply by ●December 27, 20042004-12-27
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Hi, --- talha khan <> wrote: > Also program memory > overlay "PMOVLAY" value is 053C means not correct. What in your program could be modifying this register? ===== Jaime Andr Aranguren Cardona __________________________________ |
Reply by ●December 27, 20042004-12-27
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Hi Talha: possible reason may be >> Infinite recursion — the code keeps calling and calling but never returns ...eventually the call stack runs out of memory, results in a "Stack Overflow Error". If there is no infinite recursion >> Is it possible to experiment with the stacksize; make it larger to see if the problem recurs ? b saurabh The future belongs to those who believe in the beauty of their dreams. - Eleanor Roosevelt ================================================== On Sun, 26 Dec 2004 21:54:35 -0800 (PST), talha khan <> wrote: > > It appears during execution ... during project > execution when i halt the project (shift + F5) this > message appears. if i dont halt the project it > continues executing but the output is not correct. > also i saw "incorrect" values of variables like value > of "reset_flag" (any variable) is "8245" altough > variable can be either 0 or 1. also program memory > overlay "PMOVLAY" value is 053C means not correct. > thanx > > --- Jaime Andres Aranguren Cardona > <> wrote: > > > > > At which stage does the warning appear? When > > loading? > > When starting the IDDE session? During execution? > > > > Regards, > > > > JaaC > > > > --- talhahassankhan <> > > wrote: > > > > > > > > > > > Hi > > > i'm working on ADSP-2188M, i use Visual DSP++ 3.0 > > > IDE. i'm also using > > > Program Memory Overlays. My project is combination > > > of C & Assembly > > > routines. Most of the work is done in C, only ISRs > > > are written in > > > Assembly. Tx & Rx ISRs call C function. When i run > > > my project onto the > > > device, Error message appears: > > > EZ-ICE Driver > > > Host warning message 074 > > > Executive_ DSP chip reset required to clear > > stack > > > overflow condition. > > > > > > if anybody knows the solution or faced such error > > > kindly guide me. > > > thanx in anticipation. > > > > > > Talha Hassan > > > > ===== > > > > Jaime Andrés Aranguren Cardona > > > > > > > > > > > > > > __________________________________ > > > > > > > > > > > > > > > > > > > > > > > > > > > > __________________________________ -- |
Reply by ●December 28, 20042004-12-28
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Hi Thanx God i've isolated the problem. When i call C Routine in ISR (ISR is of course written in Assembly) then the problem occurs. problem is just isolated not solved, kindly give me tips to solve the problem. thanx Talha Hassan __________________________________ |
Reply by ●December 28, 20042004-12-28
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On Mon, 27 Dec 2004, talha khan wrote: > > Hi > Thanx God i've isolated the problem. When i call C > Routine in ISR (ISR is of course written in Assembly) > then the problem occurs. problem is just isolated not > solved, kindly give me tips to solve the problem. > thanx Howdy Talha, Sounds like the C routine is calling a few more things. Instead of calling the C routine from the isr, set a flag in the isr. In your main routine, check the flag often - if set, call the C routine. You will have an easier time debugging that way, and you'll not be wasting interrupt time. Interrupts should be very short - it's hard to do sometimes, but it works a lot better. Patience, persistence, truth, Dr. mike |
Reply by ●December 28, 20042004-12-28
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Hi, Although I think it is doable, I don't recommend to call C routines from assembly. Calling assembly routines from C is more standard. You need good knowledge of the C runtime to call C from ASM. Calling ASM from C is easier. Why can't your ISR be written in C, if what you are going to do is in C? --- talha khan <> wrote: > > Hi > Thanx God i've isolated the problem. When i call C > Routine in ISR (ISR is of course written in > Assembly) > then the problem occurs. problem is just isolated > not > solved, kindly give me tips to solve the problem. > thanx > > Talha Hassan ===== Jaime Andr Aranguren Cardona __________________________________ |
Reply by ●December 28, 20042004-12-28
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I have one board that has a problem with a 21065L SHARC (many other
"identical" boards work properly). The main symptom I have noticed is that the bus request line (\BR1) line is always low, even during reset. The board has 2 21065L chips connected in a standard multi-processor set-up (i.e. shared busses and control signals). But it appears that DSP ID #1 is driving bus request 1 line low even during reset. This signal is of course connected to both DSPs, so to isolate the problem, I lifted the pin from DSP ID #1. The pin still is driven low, so it seems that the DSP is driving it rather than a short on the board or problem with the other DSP. My first assumption is that I have a bad DSP chip. But since it is fairly difficult and costly to replace the chip, I wanted to see if there was anything else obvious that might cause this behavior. I checked clock, reset, and chip ID and they all looked OK. \HBR and \HBG were both high as expected. The boot mode is set to host boot (\BMS high, BSEL low). Can you think of anything that would cause the bus request line to be driven low? Thanks in advance, Jon __________________________________ |
Reply by ●December 28, 20042004-12-28
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On Tue, 28 Dec 2004, Jon Harris wrote: > I have one board that has a problem with a 21065L SHARC (many other "identical" > boards work properly). The main symptom I have noticed is that the bus request > line (\BR1) line is always low, even during reset. The board has 2 21065L > chips > connected in a standard multi-processor set-up (i.e. shared busses and control > signals). But it appears that DSP ID #1 is driving bus request 1 line low even > during reset. This signal is of course connected to both DSPs, so to isolate > the problem, I lifted the pin from DSP ID #1. The pin still is driven low, so > it seems that the DSP is driving it rather than a short on the board or problem > with the other DSP. > > My first assumption is that I have a bad DSP chip. But since it is fairly > difficult and costly to replace the chip, I wanted to see if there was anything > else obvious that might cause this behavior. I checked clock, reset, and chip > ID and they all looked OK. \HBR and \HBG were both high as expected. The boot > mode is set to host boot (\BMS high, BSEL low). Can you think of anything that > would cause the bus request line to be driven low? The only thing I can think of is power and ground problems. I'd have to agree with your assesment though, seems like the chip is broken. If it stays low while reset is low, the output gate is hosed. It's supposed to be tristate during reset. Patience, persistence, truth, Dr. mike |
