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fbergama / pigfx

PiGFX is a bare metal kernel for the Raspberry Pi that implements a basic ANSI terminal emulator with the additional support of some primitive graphics functions.
MIT License
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Sending CR/LF when CR is pressed #7

Closed CubeCentral closed 4 years ago

CubeCentral commented 6 years ago

I just built the Pi Zero Serial Terminal Module for my RC2014 and noticed that every time I press the "Enter" key to submit a command to CP/M, it is sending a CR followed by a LF. This causes things like a directory listing to terminate after the first entry, among other artifacts. Is there a way to configure this at boot time via the config.txt file? I have put the most recent kernel.img from here onto the SD card I received as part of the RC2014 kit with no change. I am using a Raspberry Pi Zero v1.3 and the RC2014 SIO2 card with the Pro backplane. No custom work has been done and the entire kit is as-is from Spencer at RC2014. I can work-around this issue by typing "CTRL-M" rather than "ENTER"

I also have noticed a strange keyboard mapping when using a standard (EN_US) USB keyboard where the double-quote character (") is mapped to SHIFT-2 (@) and vise versa. I can work-around this issue as well, but it is a strange keystroke compared to what I assumed is a standard keyboard layout.

If I understood more about how to compile/make from source I could investigate further, but I am not that well versed in this type of software development. I apologize if this is not the appropriate place to report this issue. Thank you in advance for your kind attention to this matter.

CubeCentral commented 6 years ago

I was informed that a fix to this issue could be found here:

https://groups.google.com/d/msgid/rc2014-z80/0e89ee77-6c4d-4caa-9b22-3f3334bb6346%40googlegroups.com

However, the double-quote issue persists with that version as well, but is easily worked around.

lurch commented 6 years ago

To solve the 'wrong' character being sent, it looks like you'll need to change which keymap is being used https://github.com/rsta2/uspi/blob/master/include/uspios.h#L43 (I've not done this myself - I just stumbled across this project this afternoon and thought it looked interesting!)

chregu82 commented 4 years ago

The CR/LF behaviour and the keyboard layout both is now configurable in pigfx.txt.