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Visitor dprasad019
Visitor
4,994 Views
Registered: ‎03-10-2013

Input to the VGA from RS232(UART) through FPGA

I already have the code to display colours on the screen, i connected xps_bram_controller to bram block, i connected PORT A in Bram block to red_out pin logic and i am giving the input in the hyperterminal Is it Work.........

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4 Replies
Historian
Historian
4,967 Views
Registered: ‎02-25-2008

Re: Input to the VGA from RS232(UART) through FPGA


@dprasad019 wrote:

I already have the code to display colours on the screen, i connected xps_bram_controller to bram block, i connected PORT A in Bram block to red_out pin logic and i am giving the input in the hyperterminal Is it Work.........


And your question is?

----------------------------Yes, I do this for a living.
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Visitor dprasad019
Visitor
4,956 Views
Registered: ‎03-10-2013

Re: Input to the VGA from RS232(UART) through FPGA

Is that procedure possible?....

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Historian
Historian
4,952 Views
Registered: ‎02-25-2008

Re: Input to the VGA from RS232(UART) through FPGA


@dprasad019 wrote:

Is that procedure possible?....


Possibly, but it's still not clear what you're really doing.

----------------------------Yes, I do this for a living.
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Advisor joelby
Advisor
4,933 Views
Registered: ‎10-05-2010

Re: Input to the VGA from RS232(UART) through FPGA

It sounds a bit like you want to implement a sort of basic serial dumb terminal.

 

What's the serial port connected to at the moment? You can't connect a BRAM directly to a UART - you'll need something that does something like this:

 

- Wait for character to come in to the UART

- Write the value in to BRAM

 

If xps_bram_controller works using a frame buffer, then the 'write the value into BRAM' step will actually be more like this:

 

- Look the character up in a ROM font table

- Write out the whole character (e.g. 8x8 bits, depending on the font size) into the the appropriate parts of the BRAM. This might take several write operations to complete.

- Increment your counter so that the next character goes to the next bit of BRAM.

 

 

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