Re: [myhdl-list] TypeError: Unexpected type

[Guy E. <guy...@gm...>]

Thanks Chris, that does the trick.


> You can work around it with:
>
> In [5]: from myhdl import *
>     ...:
>     ...: def mpegChannel(clk, rst):
>     ...:
>     ...:     s_tx_data_xor_mask_r = Signal(intbv(0)[1 + 31:])
>
>     ...:     # *** limited range type for switch ***
>     ...:     full_case = intbv(0, min=0, max=4)
>
>     ...:     @always_seq(clk.posedge, rst)
>     ...:     def fsm_seq():
>     ...:         for i in range(4):
>     ...:             full_case[:] = i
>     ...:             if full_case == 0:
>     ...:                 s_tx_data_xor_mask_r.next[1 + 7:0] = 0
>     ...:             elif full_case == 1:
>     ...:                 s_tx_data_xor_mask_r.next[1 + 15:8] = 1
>     ...:             elif full_case == 2:
>     ...:                 s_tx_data_xor_mask_r.next[1 + 23:16] = 2
>     ...:             else:
>     ...:                 s_tx_data_xor_mask_r.next[1 + 31:24] = 3
>     ...:
>     ...:     return instances()
>
> The limitation is, when evaluating an if-else structure
> the conversion code wants to determine if it full-case
> or not, because the variable switched on is an `int` it
> throws the type error.  But the code example seems reasonable,
> I think?
>
> Regards,
> Chris
>
>