[Libre-soc-bugs] [Bug 50] nmigen pinmux

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=50

--- Comment #71 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to andrey from comment #70)

> While the UART equivalent
> Printing top.jtag.boundary_scan_pads['uart_0__rx__i']
> {}

that doesn't exist (if it does, the only reason it will be "accessible"
is because top.jtag.boundary_scan_pads is a defaultdict(dict).
which auto-creates a dict *on-demand* when a lookup does not exist

fixed:

 def test_uart():
     # grab the JTAG resource pad
-    uart_pad = top.jtag.resource_table_pads[('uart', 0)]
-    #uart_rx_pad = top.jtag.boundary_scan_pads['uart_0__rx__i']['i']
+    print ()
+    print ("bs pad keys", top.jtag.boundary_scan_pads.keys())
+    print ()
+    uart_rx_pad = top.jtag.boundary_scan_pads['uart_0__rx']['i']
+    uart_tx_pad = top.jtag.boundary_scan_pads['uart_0__tx']['o']


you could have found the correct name with

    print ("bs pad keys", top.jtag.boundary_scan_pads.keys())


> Also, UART and I2C basic tests have been implemented.

fantastic.

> So once we resolve the little UART issue, what comes next?

flipping the boundary scan bits, as is done in test_jtag_tap_srv.py

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