Remove unreferenced IBM4704, Sony NEWS, NeXT keyboard code. (#14380)

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Nick Brassel 2021-09-12 11:46:39 +10:00 committed by GitHub
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/*
Copyright 2010,2011,2012,2013 Jun WAKO <wakojun@gmail.com>
*/
#include <stdbool.h>
#include <util/delay.h>
#include "debug.h"
#include "ring_buffer.h"
#include "ibm4704.h"
#define WAIT(stat, us, err) \
do { \
if (!wait_##stat(us)) { \
ibm4704_error = err; \
goto ERROR; \
} \
} while (0)
uint8_t ibm4704_error = 0;
void ibm4704_init(void) {
inhibit(); // keep keyboard from sending
IBM4704_INT_INIT();
IBM4704_INT_ON();
idle(); // allow keyboard sending
}
/*
Host to Keyboard
----------------
Data bits are LSB first and Parity is odd. Clock has around 60us high and 30us low part.
____ __ __ __ __ __ __ __ __ __ ________
Clock \______/ \_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/
^ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ___
Data ____|__/ X____X____X____X____X____X____X____X____X____X \___
| Start 0 1 2 3 4 5 6 7 P Stop
Request by host
Start bit: can be long as 300-350us.
Request: Host pulls Clock line down to request to send a command.
Timing: After Request keyboard pull up Data and down Clock line to low for start bit.
After request host release Clock line once Data line becomes hi.
Host writes a bit while Clock is hi and Keyboard reads while low.
Stop bit: Host releases or pulls up Data line to hi after 9th clock and waits for keyboard pull down the line to lo.
*/
uint8_t ibm4704_send(uint8_t data) {
bool parity = true; // odd parity
ibm4704_error = 0;
IBM4704_INT_OFF();
/* Request to send */
idle();
clock_lo();
/* wait for Start bit(Clock:lo/Data:hi) */
WAIT(data_hi, 300, 0x30);
/* Data bit */
for (uint8_t i = 0; i < 8; i++) {
WAIT(clock_hi, 100, 0x40 + i);
if (data & (1 << i)) {
parity = !parity;
data_hi();
} else {
data_lo();
}
WAIT(clock_lo, 100, 0x48 + i);
}
/* Parity bit */
WAIT(clock_hi, 100, 0x34);
if (parity) {
data_hi();
} else {
data_lo();
}
WAIT(clock_lo, 100, 0x35);
/* Stop bit */
WAIT(clock_hi, 100, 0x34);
data_hi();
/* End */
WAIT(data_lo, 100, 0x36);
idle();
IBM4704_INT_ON();
return 0;
ERROR:
idle();
if (ibm4704_error > 0x30) {
xprintf("S:%02X ", ibm4704_error);
}
IBM4704_INT_ON();
return -1;
}
/* wait forever to receive data */
uint8_t ibm4704_recv_response(void) {
while (!rbuf_has_data()) {
_delay_ms(1);
}
return rbuf_dequeue();
}
uint8_t ibm4704_recv(void) {
if (rbuf_has_data()) {
return rbuf_dequeue();
} else {
return -1;
}
}
/*
Keyboard to Host
----------------
Data bits are LSB first and Parity is odd. Clock has around 60us high and 30us low part.
____ __ __ __ __ __ __ __ __ __ _______
Clock \_____/ \_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/
____ ____ ____ ____ ____ ____ ____ ____ ____ ____
Data ____/ X____X____X____X____X____X____X____X____X____X________
Start 0 1 2 3 4 5 6 7 P Stop
Start bit: can be long as 300-350us.
Inhibit: Pull Data line down to inhibit keyboard to send.
Timing: Host reads bit while Clock is hi.(rising edge)
Stop bit: Keyboard pulls down Data line to lo after 9th clock.
*/
ISR(IBM4704_INT_VECT) {
static enum { BIT0, BIT1, BIT2, BIT3, BIT4, BIT5, BIT6, BIT7, PARITY, STOP } state = BIT0;
// LSB first
static uint8_t data = 0;
// Odd parity
static uint8_t parity = false;
ibm4704_error = 0;
switch (state) {
case BIT0:
case BIT1:
case BIT2:
case BIT3:
case BIT4:
case BIT5:
case BIT6:
case BIT7:
data >>= 1;
if (data_in()) {
data |= 0x80;
parity = !parity;
}
break;
case PARITY:
if (data_in()) {
parity = !parity;
}
if (!parity) goto ERROR;
break;
case STOP:
// Data:Low
WAIT(data_lo, 100, state);
if (!rbuf_enqueue(data)) {
print("rbuf: full\n");
}
ibm4704_error = IBM4704_ERR_NONE;
goto DONE;
break;
default:
goto ERROR;
}
state++;
goto RETURN;
ERROR:
ibm4704_error = state;
while (ibm4704_send(0xFE)) _delay_ms(1); // resend
xprintf("R:%02X%02X\n", state, data);
DONE:
state = BIT0;
data = 0;
parity = false;
RETURN:
return;
}

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/*
Copyright 2014 Jun WAKO <wakojun@gmail.com>
*/
#pragma once
#define IBM4704_ERR_NONE 0
#define IBM4704_ERR_PARITY 0x70
void ibm4704_init(void);
uint8_t ibm4704_send(uint8_t data);
uint8_t ibm4704_recv_response(void);
uint8_t ibm4704_recv(void);
/* Check pin configuration */
#if !(defined(IBM4704_CLOCK_PORT) && defined(IBM4704_CLOCK_PIN) && defined(IBM4704_CLOCK_DDR) && defined(IBM4704_CLOCK_BIT))
# error "ibm4704 clock pin configuration is required in config.h"
#endif
#if !(defined(IBM4704_DATA_PORT) && defined(IBM4704_DATA_PIN) && defined(IBM4704_DATA_DDR) && defined(IBM4704_DATA_BIT))
# error "ibm4704 data pin configuration is required in config.h"
#endif
/*--------------------------------------------------------------------
* static functions
*------------------------------------------------------------------*/
static inline void clock_lo(void) {
IBM4704_CLOCK_PORT &= ~(1 << IBM4704_CLOCK_BIT);
IBM4704_CLOCK_DDR |= (1 << IBM4704_CLOCK_BIT);
}
static inline void clock_hi(void) {
/* input with pull up */
IBM4704_CLOCK_DDR &= ~(1 << IBM4704_CLOCK_BIT);
IBM4704_CLOCK_PORT |= (1 << IBM4704_CLOCK_BIT);
}
static inline bool clock_in(void) {
IBM4704_CLOCK_DDR &= ~(1 << IBM4704_CLOCK_BIT);
IBM4704_CLOCK_PORT |= (1 << IBM4704_CLOCK_BIT);
_delay_us(1);
return IBM4704_CLOCK_PIN & (1 << IBM4704_CLOCK_BIT);
}
static inline void data_lo(void) {
IBM4704_DATA_PORT &= ~(1 << IBM4704_DATA_BIT);
IBM4704_DATA_DDR |= (1 << IBM4704_DATA_BIT);
}
static inline void data_hi(void) {
/* input with pull up */
IBM4704_DATA_DDR &= ~(1 << IBM4704_DATA_BIT);
IBM4704_DATA_PORT |= (1 << IBM4704_DATA_BIT);
}
static inline bool data_in(void) {
IBM4704_DATA_DDR &= ~(1 << IBM4704_DATA_BIT);
IBM4704_DATA_PORT |= (1 << IBM4704_DATA_BIT);
_delay_us(1);
return IBM4704_DATA_PIN & (1 << IBM4704_DATA_BIT);
}
static inline uint16_t wait_clock_lo(uint16_t us) {
while (clock_in() && us) {
asm("");
_delay_us(1);
us--;
}
return us;
}
static inline uint16_t wait_clock_hi(uint16_t us) {
while (!clock_in() && us) {
asm("");
_delay_us(1);
us--;
}
return us;
}
static inline uint16_t wait_data_lo(uint16_t us) {
while (data_in() && us) {
asm("");
_delay_us(1);
us--;
}
return us;
}
static inline uint16_t wait_data_hi(uint16_t us) {
while (!data_in() && us) {
asm("");
_delay_us(1);
us--;
}
return us;
}
/* idle state that device can send */
static inline void idle(void) {
clock_hi();
data_hi();
}
/* inhibit device to send
* keyboard checks Data line on start bit(Data:hi) and it stops sending if Data line is low.
*/
static inline void inhibit(void) {
clock_hi();
data_lo();
}

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/*
Copyright 2012 Jun WAKO <wakojun@gmail.com>
This software is licensed with a Modified BSD License.
All of this is supposed to be Free Software, Open Source, DFSG-free,
GPL-compatible, and OK to use in both free and proprietary applications.
Additions and corrections to this file are welcome.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name of the copyright holders nor the names of
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdbool.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include "news.h"
void news_init(void) { NEWS_KBD_RX_INIT(); }
// RX ring buffer
#define RBUF_SIZE 8
static uint8_t rbuf[RBUF_SIZE];
static uint8_t rbuf_head = 0;
static uint8_t rbuf_tail = 0;
uint8_t news_recv(void) {
uint8_t data = 0;
if (rbuf_head == rbuf_tail) {
return 0;
}
data = rbuf[rbuf_tail];
rbuf_tail = (rbuf_tail + 1) % RBUF_SIZE;
return data;
}
// USART RX complete interrupt
ISR(NEWS_KBD_RX_VECT) {
uint8_t next = (rbuf_head + 1) % RBUF_SIZE;
if (next != rbuf_tail) {
rbuf[rbuf_head] = NEWS_KBD_RX_DATA;
rbuf_head = next;
}
}
/*
SONY NEWS Keyboard Protocol
===========================
Resources
---------
Mouse protocol of NWA-5461(Japanese)
http://groups.google.com/group/fj.sys.news/browse_thread/thread/a01b3e3ac6ae5b2d
SONY NEWS Info(Japanese)
http://katsu.watanabe.name/doc/sonynews/
Pinouts
-------
EIA 232 male connector from NWP-5461
-------------
\ 1 2 3 4 5 /
\ 6 7 8 9 /
---------
1 VCC
2 BZ(Speaker)
3 Keyboard Data(from keyboard MCU TxD)
4 NC
5 GND
6 Unknown Input(to keyboard MCU RxD via schmitt trigger)
7 Mouse Data(from Mouse Ext connector)
8 Unknown Input(to Keyboard MCU Input via diode and buffer)
9 FG
NOTE: Two LED on keyboard are controlled by pin 6,8?
EIA 232 male connector from NWP-411A
-------------
\ 1 2 3 4 5 /
\ 6 7 8 9 /
---------
1 VCC
2 BZ(Speaker)
3 Keyboard Data(from keyboard MCU TxD)
4 NC
5 GND
6 NC
7 Mouse Data(from Mouse Ext connector)
8 NC
9 FG
NOTE: These are just from my guess and not confirmed.
Signaling
---------
~~~~~~~~~~ ____XOO0X111X222X333X444X555X666X777~~~~ ~~~~~~~
Idle Start LSB MSB Stop Idle
Idle: High
Start bit: Low
Stop bit: High
Bit order: LSB first
Baud rate: 9600
Interface: TTL level(5V) UART
NOTE: This is observed on NWP-5461 with its DIP switch all OFF.
Format
------
MSB LSB
7 6 5 4 3 2 1 0 bit
| | | | | | | |
| +-+-+-+-+-+-+-- scan code(00-7F)
+---------------- break flag: sets when released
Scan Codes
----------
SONY NEWS NWP-5461
,---. ,------------------------, ,------------------------. ,---------.
| 7A| | 01 | 02 | 03 | 04 | 05 | | 06 | 07 | 08 | 09 | 0A | | 68 | 69 | ,-----------.
`---' `------------------------' `------------------------' `---------' | 64| 65| 52|
,-------------------------------------------------------------. ,---. ,---------------|
| 0B| 0C| 0D| 0E| 0F| 10| 11| 12| 13| 14| 15| 16| 17| 18| 19 | | 6A| | 4B| 4C| 4D| 4E|
|-------------------------------------------------------------| |---| |---------------|
| 1A | 1B| 1C| 1D| 1E| 1F| 20| 21| 22| 23| 24| 25| 26| 27| | | 6B| | 4F| 50| 51| 56|
|---------------------------------------------------------' | |---| |---------------|
| 28 | 29| 2A| 2B| 2C| 2D| 2E| 2F| 30| 31| 32| 33| 34| 35 | | 6C| | 53| 54| 55| |
|-------------------------------------------------------------| |---| |-----------| 5A|
| 36 | 37| 38| 39| 3A| 3B| 3C| 3D| 3E| 3F| 40| 41| 42 | | 6D| | 57| 59| 58| |
|-------------------------------------------------------------| |---| |---------------|
| 43 | 44 | 45 | 46 | 47 | 48| 49| 4A | | 6E| | 66| 5B| 5C| 5D|
`-------------------------------------------------------------' `---' `---------------'
*/

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/*
Copyright 2012 Jun WAKO <wakojun@gmail.com>
This software is licensed with a Modified BSD License.
All of this is supposed to be Free Software, Open Source, DFSG-free,
GPL-compatible, and OK to use in both free and proprietary applications.
Additions and corrections to this file are welcome.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name of the copyright holders nor the names of
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
/*
* Primitive PS/2 Library for AVR
*/
/* host role */
void news_init(void);
uint8_t news_recv(void);
/* device role */

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/*
NeXT non-ADB Keyboard Protocol
Copyright 2013, Benjamin Gould (bgould@github.com)
Based on:
TMK firmware code Copyright 2011,2012 Jun WAKO <wakojun@gmail.com>
Arduino code by "Ladyada" Limor Fried (http://ladyada.net/, http://adafruit.com/), released under BSD license
Timing reference thanks to http://m0115.web.fc2.com/ (dead link), http://cfile7.uf.tistory.com/image/14448E464F410BF22380BB
Pinouts thanks to http://www.68k.org/~degs/nextkeyboard.html
Keycodes from http://ftp.netbsd.org/pub/NetBSD/NetBSD-release-6/src/sys/arch/next68k/dev/
This software is licensed with a Modified BSD License.
All of this is supposed to be Free Software, Open Source, DFSG-free,
GPL-compatible, and OK to use in both free and proprietary applications.
Additions and corrections to this file are welcome.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name of the copyright holders nor the names of
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdint.h>
#include <stdbool.h>
#include <util/atomic.h>
#include <util/delay.h>
#include "next_kbd.h"
#include "debug.h"
static inline void out_lo(void);
static inline void out_hi(void);
static inline void query(void);
static inline void reset(void);
static inline uint32_t response(void);
/* The keyboard sends signal with 50us pulse width on OUT line
* while it seems to miss the 50us pulse on In line.
* next_kbd_set_leds() often fails to sync LED status with 50us
* but it works well with 51us(+1us) on TMK converter(ATMeaga32u2) at least.
* TODO: test on Teensy and Pro Micro configuration
*/
#define out_hi_delay(intervals) \
do { \
out_hi(); \
_delay_us((NEXT_KBD_TIMING + 1) * intervals); \
} while (0);
#define out_lo_delay(intervals) \
do { \
out_lo(); \
_delay_us((NEXT_KBD_TIMING + 1) * intervals); \
} while (0);
#define query_delay(intervals) \
do { \
query(); \
_delay_us((NEXT_KBD_TIMING + 1) * intervals); \
} while (0);
#define reset_delay(intervals) \
do { \
reset(); \
_delay_us((NEXT_KBD_TIMING + 1) * intervals); \
} while (0);
void next_kbd_init(void) {
out_hi();
NEXT_KBD_IN_DDR &= ~(1 << NEXT_KBD_IN_BIT); // KBD_IN to input
NEXT_KBD_IN_PORT |= (1 << NEXT_KBD_IN_BIT); // KBD_IN pull up
query_delay(5);
reset_delay(8);
query_delay(5);
reset_delay(8);
}
void next_kbd_set_leds(bool left, bool right) {
cli();
out_lo_delay(9);
out_hi_delay(3);
out_lo_delay(1);
if (left) {
out_hi_delay(1);
} else {
out_lo_delay(1);
}
if (right) {
out_hi_delay(1);
} else {
out_lo_delay(1);
}
out_lo_delay(7);
out_hi();
sei();
}
#define NEXT_KBD_READ (NEXT_KBD_IN_PIN & (1 << NEXT_KBD_IN_BIT))
uint32_t next_kbd_recv(void) {
// First check to make sure that the keyboard is actually connected;
// if not, just return
// TODO: reflect the status of the keyboard in a return code
if (!NEXT_KBD_READ) {
sei();
return 0;
}
query();
uint32_t resp = response();
return resp;
}
static inline uint32_t response(void) {
cli();
// try a 5ms read; this should be called after the query method has
// been run so if a key is pressed we should get a response within
// 5ms; if not then send a reset and exit
uint8_t i = 0;
uint32_t data = 0;
uint16_t reset_timeout = 50000;
while (NEXT_KBD_READ && reset_timeout) {
asm("");
_delay_us(1);
reset_timeout--;
}
if (!reset_timeout) {
reset();
sei();
return 0;
}
_delay_us(NEXT_KBD_TIMING / 2);
for (; i < 22; i++) {
if (NEXT_KBD_READ) {
data |= ((uint32_t)1 << i);
/* Note:
* My testing with the ATmega32u4 showed that there might
* something wrong with the timing here; by the end of the
* second data byte some of the modifiers can get bumped out
* to the next bit over if we just cycle through the data
* based on the expected interval. There is a bit (i = 10)
* in the middle of the data that is always on followed by
* one that is always off - so we'll use that to reset our
* timing in case we've gotten ahead of the keyboard;
*/
if (i == 10) {
i++;
while (NEXT_KBD_READ)
;
_delay_us(NEXT_KBD_TIMING / 2);
}
} else {
/* redundant - but I don't want to remove if it might screw
* up the timing
*/
data |= ((uint32_t)0 << i);
}
_delay_us(NEXT_KBD_TIMING);
}
sei();
return data;
}
static inline void out_lo(void) {
NEXT_KBD_OUT_PORT &= ~(1 << NEXT_KBD_OUT_BIT);
NEXT_KBD_OUT_DDR |= (1 << NEXT_KBD_OUT_BIT);
}
static inline void out_hi(void) {
/* input with pull up */
NEXT_KBD_OUT_DDR &= ~(1 << NEXT_KBD_OUT_BIT);
NEXT_KBD_OUT_PORT |= (1 << NEXT_KBD_OUT_BIT);
}
static inline void query(void) {
out_lo_delay(5);
out_hi_delay(1);
out_lo_delay(3);
out_hi();
}
static inline void reset(void) {
out_lo_delay(1);
out_hi_delay(4);
out_lo_delay(1);
out_hi_delay(6);
out_lo_delay(10);
out_hi();
}

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/*
NeXT non-ADB Keyboard Protocol
Copyright 2013, Benjamin Gould (bgould@github.com)
Based on:
TMK firmware code Copyright 2011,2012 Jun WAKO <wakojun@gmail.com>
Arduino code by "Ladyada" Limor Fried (http://ladyada.net/, http://adafruit.com/), released under BSD license
Timing reference thanks to http://m0115.web.fc2.com/ (dead link), http://cfile7.uf.tistory.com/image/14448E464F410BF22380BB
Pinouts thanks to http://www.68k.org/~degs/nextkeyboard.html
Keycodes from http://ftp.netbsd.org/pub/NetBSD/NetBSD-release-6/src/sys/arch/next68k/dev/
This software is licensed with a Modified BSD License.
All of this is supposed to be Free Software, Open Source, DFSG-free,
GPL-compatible, and OK to use in both free and proprietary applications.
Additions and corrections to this file are welcome.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name of the copyright holders nor the names of
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <stdbool.h>
#define NEXT_KBD_KMBUS_IDLE 0x300600
#define NEXT_KBD_TIMING 50
extern uint8_t next_kbd_error;
/* host role */
void next_kbd_init(void);
void next_kbd_set_leds(bool left, bool right);
uint32_t next_kbd_recv(void);