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f4pga-examples
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Something must have been wired incorrectly before. Now, the USB-UART is working correctly without any issues 

Signed-off-by: Chandler Jearls <cjearls@vt.edu>
This commit is contained in:
Chandler Jearls 2021-05-02 22:02:45 +00:00
parent 81b697fa0d
commit ab4806984b
3 changed files with 3 additions and 12 deletions
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4
xc7/picosoc_demo/README.rst
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@ -71,10 +71,6 @@ The UART output should look as follows:
PicoSoC uses baud rate of ``460800`` by default. PicoSoC uses baud rate of ``460800`` by default.
.. note::
On the Nexys4DDR, the USB-UART does not work, so UART can be accessed from pins 1 and 2 of PMOD C.
The board's LED should blink at a regular rate from left to the right The board's LED should blink at a regular rate from left to the right
.. image:: ../../docs/images/picosoc-example-basys3.gif .. image:: ../../docs/images/picosoc-example-basys3.gif

4
xc7/picosoc_demo/nexys4ddr.pcf
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@ -2,8 +2,8 @@
set_io clk E3 set_io clk E3
# UART rx and tx are assigned to pins 1 and 2 of the PMOD Jumper C # UART rx and tx are assigned to pins 1 and 2 of the PMOD Jumper C
set_io rx K1 set_io rx C4
set_io tx F6 set_io tx D4
# LEDs # LEDs
set_io led[0] H17 set_io led[0] H17

5
xc7/picosoc_demo/nexys4ddr.v
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@ -25,13 +25,8 @@ module top (
input [15:0] sw, input [15:0] sw,
output [15:0] led, output [15:0] led,
output uart_cts,
output uart_rts
); );
assign uart_cts = 1'b0;
assign uart_rts = 1'b0;
wire clk_bufg; wire clk_bufg;
BUFG bufg (.I(clk), .O(clk_bufg)); BUFG bufg (.I(clk), .O(clk_bufg));