Re: verilog to MyHDL conversion

I was wondering if MyHDL /  Python supports functional oriented programming and development for FPGAs ??  


Thanks,
David Blubaugh
 

    On Monday, March 21, 2016 8:36 PM, Edward Vidal <[email protected]> wrote:
 

 Chris,I used a module top_level which uses a dd dummy method to include the verilog code using a 
dd.verilog_code = \ statement.
python jtagser.py --convert.
see https://gist.github.com/609d03b3296dd3610343.git
This now includes BSCAN_SPARTAN6 like the file jtagser.v
 Thanks,
Edward Vidal Jr. e-mail [email protected] 915-595-1613 

   

 On Sunday, March 20, 2016 5:09 PM, Edward Vidal <[email protected]> wrote:
 

 Chris,The following o_rx_data.next = { ck_tdi, o_rx_data[7:1] } converts to 
o_rx_data <= ck_tdio_rx_data[7-1:1]; should be o_rx_data <= { ck_tdi, o_rx_data[7:1] };
What is this statement doing? 
Still must be missing something? Not getting anything in the .v file created.Is this what you wanted me to do?
    capture = Signal(bool(0))
    drck = Signal(bool(0))
    reset = Signal(bool(0))
    RUNTEST = Signal(bool(0))
    SEL = Signal(bool(0))
    SHIFT = Signal(bool(0))
    TCK = Signal(bool(0))
    TDI = Signal(bool(0))
    TMS = Signal(bool(0))
    UPDATE = Signal(bool(0))
    TDO = Signal(bool(0))

    def bscan_spartan6(capture,drck,reset,RUNTEST,SEL,SHIFT,TCK,TDI,TMS,UPDATE,TDO):
        '''
        mark the outputs with sig.driven = True
        maybe put some logic to stub out minimal behavior
        '''
        capture.driven = True
        drck.driven = True
        reset.driven = True
        RUNTEST.driven = True
        SEL.driven = True
        SHIFT.driven = True
        TCK.driven = True
        TDI.driven = True
        TMS.driven = True
        UPDATE.driven = True
        TDO.driven = True
Thanks,
 Edward Vidal Jr. e-mail [email protected] 915-595-1613 

    On Sunday, March 20, 2016 12:11 PM, Christopher Felton <[email protected]> wrote:
 

 On 3/20/16 10:59 AM, Edward Vidal wrote:
> See the verilog file and my attempt to convert at
> https://gist.github.com/95d06caf184fc1976d65.git
> Are verilog && in myhdl written as & this?  I was getting

You would use "and" in Python/MyHDL.


> The code that starts with BSCAN_SPARTAN6, I believe came
> from a template.  I was hoping on user jtag.verilog_code = \
> to include it, in my the generated verilog file.  When I move
> line 72 """ to line 74 of jtagser.py I get the quoted text but not
> the other instance that I am trying to convert.

For this you want to create a separate block (module)
and override the contents of the block:

    def bscan_spartan6(capture, drck, reset, ...)
        # mark the outputs with sig.driven = True
        # maybe put some logic to stub out minimal behavior

    bscan_spartan6.verilog_code = \
    """
    BSCAN_SPARTN6
        #(.JTAG_CHAIN(1)))
    BSCANE2_inst(
        .CAPTURE($capture),
        .DRCK($drck),
        ...


Hope that helps,
Chris



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