100 lines
4.5 KiB
C
100 lines
4.5 KiB
C
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/* Copyright 2017-2019 Nikolaus Wittenstein <nikolaus.wittenstein@gmail.com>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#pragma once
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#include "quantum.h"
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/* Mode LEDs are active-low on Port B on the Teensy. */
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#define LED_MODE_PORT PORTB
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#define LED_TENKEY (1<<3)
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#define LED_FN (1<<4)
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#define LED_NORMAL (1<<5)
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#define LED_NAS (1<<6)
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/* Lock LEDs are active-low on Port F on the Teensy. */
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#define LED_LOCK_PORT PORTF
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#define LED_CAPS_LOCK (1<<4)
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#define LED_MOUSE_LOCK (1<<5)
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#define LED_NUM_LOCK (1<<6)
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#define LED_SCROLL_LOCK (1<<7)
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/* Appendix:
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* Table based on https://geekhack.org/index.php?topic=12212.msg2059319#msg2059319
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* Some pin assignments (e.g. for PS/2 I/O) have been fixed.
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*
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* Teensy Datahand 8051 pin pin 8051 Datahand Teensy
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* ------ -------- ---- --- --- ---- -------- ------
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* GND Mtrx send A P1.0 1 40 VCC VCC VCC
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* PB7 Mtrx send B P1.1 2 39 P0.0 LED RH NAS PB6
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* PD0 Mtrx send C P1.2 3 38 P0.1 LED RH NORM PB5
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* PD1 Mtrx send D P1.3 4 37 P0.2 LED RH FCTN PB4
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* PD2 RH rcv 0 P1.4 5 36 P0.3 LED RH 10K PB3
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* PD3 RH rcv 1 P1.5 6 35 P0.4 LED RH unused PB2
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* PD4 LH rcv 0 P1.6 7 34 P0.5 LED RH unused PE1
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* PD5 LH rcv 1 P1.7 8 33 P0.6 LED RH unused PE0
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* PD6 Reset button RST 9 32 P0.7 ? PE7
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* PD7 ? P3.0 10 31 VPP - PE6
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* PE0 ? P3.1 11 30 ALE - GND
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* PE1 kbd data P3.2 12 29 PSEN - AREF
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* PC0 ? P3.3 13 28 P2.7 ? PF0
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* PC1 kbd clk P3.4 14 27 P2.6 ? PF1
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* PC2 ? P3.5 15 26 P2.5 ? PF2
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* PC3 RAM P3.6 16 25 P2.4 ? PF3
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* PC4 RAM P3.7 17 24 P2.3 LED D15 LH (CAPLK) PF4
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* PC5 XTAL2 XTAL2 18 23 P2.2 LED D13 LH (MSELK) PF5
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* PC6 XTAL1 XTAL1 19 22 P2.1 LED D6 LH (NUMLK) PF6
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* PC7 GND GND 20 21 P2.0 LED D14 LH (SCRLK) PF7
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*
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* JP3 Pinout
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* 2 - keyboard data
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* 3 - keyboard clock
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*
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* In order to get the Teensy to work, we need to move pin 1 to a different pin. This is
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* because on the Teensy pin 1 is ground, but we need to write to pin 1 in order to read
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* the keyboard matrix. An ideal pin to move it to is VPP (pin 31), because this pin tells
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* the 8051 whether it should read from external or internal memory. The Teensy doesn't
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* care about that.
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*
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* The easiest way to reassign the pin is to use standoffs. You can check out this thread:
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* https://geekhack.org/index.php?topic=12212.msg235382#msg235382 for a picture of what
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* this looks like. Note that in the picture the pin has been reassigned to pin 12. We
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* don't want to do that because we're going to use that pin to send data over PS/2.
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*
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* We could if we wanted also reassign the PS/2 pins to Teensy hardware UART pins, but
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* that's more work. Instead we'll just bit-bang PS/2 because it's an old, slow protocol
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* (and because there's already a bit-banged PS/2 host implementation in QMK - we just
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* need to add the device side).
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*
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* So overall, we want the following inputs and outputs:
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* Outputs:
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* Matrix:
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* PB7
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* PD0
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* PD1
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* PE6 (moved from pin1, GND)
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* LEDs:
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* PB3-6
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* PF4-7
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* Inputs:
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* Matrix:
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* PD2-5
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* I/Os (start up as inputs):
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* PS/2:
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* PC1
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* PE1
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*/
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