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ee:hydrophones:start [2018/03/20 04:53] Ryan Summers [Communication] |
ee:hydrophones:start [2018/04/03 09:50] Ryan Summers |
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| //The current firmware utilizes **software/bit/adc_dma_revb.bit** as the bitstream file.// | //The current firmware utilizes **software/bit/adc_dma_revb.bit** as the bitstream file.// | ||
| - | |||
| - | ==== Cross-Compile FFTW3 ==== | ||
| - | In order to perform frequency analysis, the HydroZynq utilizes the FFTW3 libraries. In order to generate the libfftw3.a library and the associated header files, it is necessary to compile FFTW from scratch. This can be completed by downloading the FFTW tarball from [[http://www.fftw.org/download.html|here]]. Next, untar the tarball, create an output directory for the library and headers, and configure FFTW before installation with the following options: | ||
| - | mkdir build | ||
| - | ./configure --host=arm-none-eabi "CFLAGS=--specs=nosys.specs -mcpu=cortex-a9 -mfpu=vfpv3 -mfloat-abi=hard" --enable-armv7a-cntvct --prefix=`pwd`/build | ||
| - | make -j4 | ||
| - | make install | ||
| - | |||
| - | The library and appropriate headers will now be in the ''%%build/%%'' directory. | ||
| ==== Programming & Debugging ==== | ==== Programming & Debugging ==== | ||
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| | debug | unsigned int | If data is 0, HydroZynq debug mode is disabled. Otherwise, debug mode is enabled. | | | debug | unsigned int | If data is 0, HydroZynq debug mode is disabled. Otherwise, debug mode is enabled. | | ||
| | frequency | unsigned int | Specifies target pinger frequency. May be 25000, 30000, 35000, or 40000. Units are Hz. | | | frequency | unsigned int | Specifies target pinger frequency. May be 25000, 30000, 35000, or 40000. Units are Hz. | | ||
| - | | post_ping_duration_us | unsigned int | The number of microseconds after ping threshold to truncate the signal to. //Default: 50 us// | + | | post_ping_duration_us | unsigned int | The number of microseconds after ping threshold to truncate the signal to. //Default: 50 us//| |
| | pre_ping_duration_us | unsigned int | The number of microseconds before ping threshold to truncate the signal to. //Default: 100 us//| | | pre_ping_duration_us | unsigned int | The number of microseconds before ping threshold to truncate the signal to. //Default: 100 us//| | ||
| | filter | unsigned int | If data is 0, IIR filtering is disabled. Otherwise, filter is enabled. //Default: disabled.// | | | filter | unsigned int | If data is 0, IIR filtering is disabled. Otherwise, filter is enabled. //Default: disabled.// | | ||
