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Re: [Discuss-gnuradio] PCI-DAS4020/12 problem roundup
From: |
Sérgio Rui Silva |
Subject: |
Re: [Discuss-gnuradio] PCI-DAS4020/12 problem roundup |
Date: |
Fri, 20 Jun 2003 18:18:01 +0100 (WEST) |
User-agent: |
PT Multimedia Webmail program |
Hi!...
Did you connect the signal generator to the first BNC plug (CH0)?
Because thats what I was using in revisioned version of the
adc3_fft program... It works great here... No zero signal problem...
Sérgio Rui Silva
P.S.: Sorry about the missing #include <mc4020.h>...
Citando Ricky Hussmann <address@hidden>:
} Here's my update on the issues with 4020 board PC
} lockup.
}
} Summary of the problem:
}
} I and apparently other users on the list are having
} trouble running any
} example program that uses the MC4020 multiple times.
} The first time running
} an example using the MC4020 after startup works
} flawlessly. However, after
} that example is closed and any other example run that
} uses the MC4020 the
} machine completely locks up.
}
} Attempts at solutions:
}
} First, I am working with the latest (0.7) driver for
} the mc4020.
}
} I have applied Sergio's patch and tried recompiling
} GNU Radio. In his modified
} version of GrMC4020.h the line
}
} #include <mc4020.h>
}
} is missing, so if you had problems compiling try
} inserting the above line and
} recompiling. After compiling his version of
} adc_fft.cc and testing it I WAS
} able to run the program multiple times. However, the
} graphs displayed a dead
} zero signal even though I was inputting a sine wave
} into the 4020. Also,
} Sergio simply uses a countdown from 1,000 to bypass
} exit from the loop and
} properly call the destructor for the GrSourceMC4020
} class. This causes the
} program to terminate shortly after it started.
}
} My thoughts:
}
} Just from the nature of the problem, I believe this
} is an issue with not
} correctly deallocating resources the device is using.
} I'm lead to believe
} this because:
}
} 1.) The machine locks up only after an example
} program has been run and closed
} and another has been executed.
}
} 2.) Sergio's call to the destructor allowed the
} program to be run multiple
} times, even though no data was displayed on the
} graphs in the adc3_fft
} program.
}
} I haven't delved deeply into GNU Radio's core and I'm
} not sure I'd understand
} it if I did, but I'm willing to provide whatever
} assistance is necessary to
} solve this problem (it's really a pain when trying to
} work with the 4020
} board).
}
} My hardware configuration:
}
} I'm using a Dell Dimension XPS T750r that appears to
} be using the Intel 440
} BX/ZX/DX chipset. It is using the Intel PIIX4 Ultra
} 33 chipset for IDE
} control. It has a 750 MHz Intel P3 processor. I'm
} running Slackware 9.0 with
} the 2.4.20 series kernel stock from install.
}
} Hope this can help,
} Ricky Hussmann
}
}
} _______________________________________________
} Discuss-gnuradio mailing list
} address@hidden
}
} http://mail.gnu.org/mailman/listinfo/discuss-gnuradio
}
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