hid-remapper
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jfedor2
Adafruit Feather RP2040 with USB Type A Host - GPIO pins
I would like to add typewriter sound effects to the hid-remapper on RP 2040. Like this: Hackaday article about KB with integrated solenoid So I bought an Adafruit Feather USB Host And a Relay Featherwing
It looks like I could use GPIO 24 or 25 to momentarily trigger the relay
I would like to trigger the relay on keydown event of any keys (I might want get fancy later). Can you recommend where I should place such a call?
I vamped on the LED activity function calls to make relay clacks related to keypresses. I used GPIO 10 instead of 25 and 25.
I may come back later and leverage the expressions interpreter to set variables? Not sure. I may also get excited to capture keydowns only, and maybe just for most keys, but exclude CR, LF, PgDn, Enter, (40 keypresses since the last CR) etc. If I could map thos to different pins, I would have everything I'm hoping for...
Ok, so, I made it through proof of concept, and in digging into the code I noticed you have the GPIOs listed as available inputs and outputs for mapping. However, the code only reads from GPIO.
I would like to set GPIO bitmask to in/out/off on the settings tab. Then have GPIO init configure for input and output. Perhaps set a global output delay? Not sure about that.
I will take a first pass at it, but c++ is not my native language, so even if I get something going, I would appreciate help getting my concepts right.
Yeah, I considered adding GPIO outputs as well, for LEDs for example, to visualize layer state or as an extra CapsLock, but never got around to it.
I failed trying to get real native with it. Tried to use bitmask to set which IO ports were read and which were write, and in the end just made a mess of my code. I may try again later. If you have some time I would love some recommendations on how to be successful and cross-platform compliant