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Re: reading image data stored in text file using vhdl in xil
If you would like to read the file for your simulation purposes using VHDL then you can follow what is given in the below link
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The number of BRAMs will be selected depending upon the number of data samples to be captured by chipscope. This will be done automatically by ILA core when data width and number of samples is selected.If you use cdc(chipscope definition file) it will give you more flexibility and visibility...
Say for example you set enable signal coming to your block as triggerr and want to monitor data_in. If a trigger condition of 1 is set in chipscope analyzer, then when a 1 is detected on enable pin, ILA will start sampling data_in signal, store it in the BRAM dedicated to it and display the...
Take a look at this appnote from xilinx for decoupling FPGA's, this gives an idea about decoupling.
https://www.xilinx.com/support/documentation/application_notes/xapp623.pdf
For a much broader view
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I have used VINCL-1A to read write from USB BOMS. It gives you a simple SPI or UART interface. You can use MicroBlaze+UART IP core (in Xilinx FPGA's) to talk to VINCL-1A.
ILA trigger is just like a trigger in oscilloscope. Once the trigger condition is met it will start sampling(using the clock mapped to ILA) the data you want to monitor and show it on the chipscope window.
FYI ...
I got the same code when I auto-generated it from ise 11.5 I commented out the section where clkout was getting driven and then ran the simulation.
I don't see any problem in ise 11.5 simulator and more over the RTL schematic of the your code does what you intend. I have attached the Behavioral and Post-Route simulation no problems, the o/p is as you would expect.
I agree with FvM the the I2C mux module has to listen to every I2C transfer happening through it and accordingly set the direction for the selected SDA I/O buffer line. This case i2c s/w module should also know how the i2c transfer is going to takes place between the master and the slave devices...
OK then you will have to implement an i2c slave which I think you can find here
and then use the o/p of the control reg as select line of the SDA,SCL mux. Apart from acting as a s/w i2c s/w module should also listen to all i2c transaction so that it can update the control reg.Nice one I...
higher the the switching frequency lower will be the component footprint of your switching circuit.But your efficiency will also come down as switching frequency increases. I don't think it will have its affect on high speed design as long as proper layout guidelines are taken care(as stated by...
If proper layout constraints are taken care switching frequency is not a problem. As you might know this is the frequency at which the PWM inside the regulator will operate. There is a trade off between switching freq. and component footprint. If you are still to worried about it then you can go...
If this is the error your are stuck at can you please give more info ... this does not tell the exact error. Paste the console output after you give build project..
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