I would recommend not modifying the radio, but to add an RFNoC block of
your own. Take a look at our RFNoC resources on the Knowledge Base (
kb.ettus.com).
-- M
On Thu, Nov 1, 2018 at 6:46 AM carry chen via USRP-users <
usrp-users@lists.ettus.com> wrote:
> hi,
> this days I make some modify in usrp e310 fpga.
> I want to recv my custom data and process in fpga.
>
> so I modify the file xxx/e310/radio.v :
> from:
> axi_fifo_2clk #(.WIDTH(65), .SIZE(DATA_FIFO_SIZE)) tx_data_2clk_fifo
> (.reset(bus_rst),
> .i_aclk(bus_clk), .i_tvalid(tx_tvalid_bi), .i_tready(tx_tready_bi),
> .i_tdata({tx_tlast_bi,tx_tdata_bi}),
> .o_aclk(radio_clk), .o_tvalid(tx_tvalid_r), .o_tready(tx_tready_r),
> .o_tdata({tx_tlast_r,tx_tdata_r}));
>
> to:
> wire custom_tvalid;
> wire custom_tlast;
> wire [63:0] custom_tdata;
> wire custom_tready;
> axi_fifo_2clk #(.WIDTH(65), .SIZE(DATA_FIFO_SIZE)) tx_data_2clk_fifo
> (.reset(bus_rst),
> .i_aclk(bus_clk), .i_tvalid(tx_tvalid_bi), .i_tready(tx_tready_bi),
> .i_tdata({tx_tlast_bi,tx_tdata_bi}),
> .o_aclk(radio_clk), .o_tvalid(custom_tvalid),
> .o_tready(custom_tready), .o_tdata({custom_tlast,custom_tdata}));
>
> my_module test
> (
> .valid(custom_tvalid),
> .last(custom_tlast),
> .ready(custom_tdata),
> .data(custom_tdata)
> );
>
> when send one packet with tx_streamer->send() , data is send and recv ok!
>
> but when I send many packet, It become stuck!! tx_streamer->send() need
> many seconds to return!!
>
> is that some flow control when send?
>
> can I get some tips?
>
> Thank you!
>
> Best Regards,
> Carry
>
>
>
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