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Author SHA1 Message Date
David Anderson d3ab2fa433 debugger: start of a debugger client that uses the serial debug gateware 2024-09-14 20:32:40 -07:00
David Anderson 8ab867d2d2 lib/UART: move from debugger, it's generic enough 2024-09-13 23:05:48 -07:00
David Anderson 379ebf0411 debugger/UART: implement a UART with RTS/CTS flow control 
In practice the flow control is unusable on ULX3S dev boards because
the CTS line isn't hooked up (it's instead wired to JTAG_TDO, to enable
the USB<>UART chip to serve a dual purpose as a bitbanged JTAG programmer)

Still, support for flow control is nice, for the future. And the UART
itself also works regardless of flow control, which is of course nice.
 2024-09-13 21:24:29 -07:00