#---------------------------------------------------------------------------- | |||||
# On command line: | |||||
# | |||||
# make all = Make software. | |||||
# | |||||
# make clean = Clean out built project files. | |||||
# | |||||
# make coff = Convert ELF to AVR COFF. | |||||
# | |||||
# make extcoff = Convert ELF to AVR Extended COFF. | |||||
# | |||||
# make program = Download the hex file to the device. | |||||
# Please customize your programmer settings(PROGRAM_CMD) | |||||
# | |||||
# make teensy = Download the hex file to the device, using teensy_loader_cli. | |||||
# (must have teensy_loader_cli installed). | |||||
# | |||||
# make dfu = Download the hex file to the device, using dfu-programmer (must | |||||
# have dfu-programmer installed). | |||||
# | |||||
# make flip = Download the hex file to the device, using Atmel FLIP (must | |||||
# have Atmel FLIP installed). | |||||
# | |||||
# make dfu-ee = Download the eeprom file to the device, using dfu-programmer | |||||
# (must have dfu-programmer installed). | |||||
# | |||||
# make flip-ee = Download the eeprom file to the device, using Atmel FLIP | |||||
# (must have Atmel FLIP installed). | |||||
# | |||||
# make debug = Start either simulavr or avarice as specified for debugging, | |||||
# with avr-gdb or avr-insight as the front end for debugging. | |||||
# | |||||
# make filename.s = Just compile filename.c into the assembler code only. | |||||
# | |||||
# make filename.i = Create a preprocessed source file for use in submitting | |||||
# bug reports to the GCC project. | |||||
# | |||||
# To rebuild project do "make clean" then "make all". | |||||
#---------------------------------------------------------------------------- | |||||
# Target file name (without extension). | |||||
TARGET = adb_usb_blargg | |||||
# Directory common source filess exist | |||||
TOP_DIR = ../.. | |||||
# Directory keyboard dependent files exist | |||||
TARGET_DIR = . | |||||
# project specific files | |||||
SRC = keymap.c \ | |||||
matrix.c \ | |||||
led.c \ | |||||
adb_blargg.c | |||||
CONFIG_H = config.h | |||||
# MCU name | |||||
#MCU = at90usb1287 | |||||
MCU = atmega32u4 | |||||
# Processor frequency. | |||||
# This will define a symbol, F_CPU, in all source code files equal to the | |||||
# processor frequency in Hz. You can then use this symbol in your source code to | |||||
# calculate timings. Do NOT tack on a 'UL' at the end, this will be done | |||||
# automatically to create a 32-bit value in your source code. | |||||
# | |||||
# This will be an integer division of F_USB below, as it is sourced by | |||||
# F_USB after it has run through any CPU prescalers. Note that this value | |||||
# does not *change* the processor frequency - it should merely be updated to | |||||
# reflect the processor speed set externally so that the code can use accurate | |||||
# software delays. | |||||
F_CPU = 16000000 | |||||
# | |||||
# LUFA specific | |||||
# | |||||
# Target architecture (see library "Board Types" documentation). | |||||
ARCH = AVR8 | |||||
# Input clock frequency. | |||||
# This will define a symbol, F_USB, in all source code files equal to the | |||||
# input clock frequency (before any prescaling is performed) in Hz. This value may | |||||
# differ from F_CPU if prescaling is used on the latter, and is required as the | |||||
# raw input clock is fed directly to the PLL sections of the AVR for high speed | |||||
# clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL' | |||||
# at the end, this will be done automatically to create a 32-bit value in your | |||||
# source code. | |||||
# | |||||
# If no clock division is performed on the input clock inside the AVR (via the | |||||
# CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU. | |||||
F_USB = $(F_CPU) | |||||
# Interrupt driven control endpoint task(+60) | |||||
#OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT | |||||
# Boot Section Size in *bytes* | |||||
# Teensy halfKay 512 | |||||
# Teensy++ halfKay 1024 | |||||
# Atmel DFU loader 4096 | |||||
# LUFA bootloader 4096 | |||||
# USBaspLoader 2048 | |||||
OPT_DEFS += -DBOOTLOADER_SIZE=4096 | |||||
# Build Options | |||||
# comment out to disable the options. | |||||
# | |||||
BOOTMAGIC_ENABLE = yes # Virtual DIP switch configuration(+1000) | |||||
MOUSEKEY_ENABLE = yes # Mouse keys(+4700) | |||||
EXTRAKEY_ENABLE = yes # Audio control and System control(+450) | |||||
CONSOLE_ENABLE = yes # Console for debug(+400) | |||||
COMMAND_ENABLE = yes # Commands for debug and configuration | |||||
#SLEEP_LED_ENABLE = yes # Breathing sleep LED during USB suspend | |||||
#NKRO_ENABLE = yes # USB Nkey Rollover - not yet supported in LUFA | |||||
# Optimize size but this may cause error "relocation truncated to fit" | |||||
#EXTRALDFLAGS = -Wl,--relax | |||||
# Search Path | |||||
VPATH += $(TARGET_DIR) | |||||
VPATH += $(TOP_DIR) | |||||
include $(TOP_DIR)/protocol/lufa.mk | |||||
include $(TOP_DIR)/protocol.mk | |||||
include $(TOP_DIR)/common.mk | |||||
include $(TOP_DIR)/rules.mk |
// Bit-banged implementation without any use of interrupts. | |||||
// Data pin must have external 1K pull-up resistor. | |||||
// Operates data pin as open-collector output. | |||||
#include "adb_blargg.h" | |||||
#ifdef HAVE_CONFIG_H | |||||
#include "config.h" | |||||
#endif | |||||
#include <avr/io.h> | |||||
#include <avr/interrupt.h> | |||||
#include <util/delay.h> | |||||
// Copyright 2011 Jun WAKO <[email protected]> | |||||
// Copyright 2013 Shay Green <[email protected]> | |||||
// See bottom of file for license | |||||
typedef uint8_t byte; | |||||
// Make loop iteration take us total, including cyc overhead of loop logic | |||||
#define delay_loop_usec( us, cyc ) \ | |||||
__builtin_avr_delay_cycles( (unsigned long) (F_CPU / 1e6 * (us) + 0.5) - (cyc) ) | |||||
#if !defined(ADB_PORT) || \ | |||||
!defined(ADB_PIN) || \ | |||||
!defined(ADB_DDR) || \ | |||||
!defined(ADB_DATA_BIT) | |||||
#error | |||||
#endif | |||||
enum { data_mask = 1<<ADB_DATA_BIT }; | |||||
enum { adb_cmd_read = 0x2C }; | |||||
enum { adb_cmd_write = 0x28 }; | |||||
// gcc is very unreliable for inlining, so use macros | |||||
#define data_lo() (ADB_DDR |= data_mask) | |||||
#define data_hi() (ADB_DDR &= ~data_mask) | |||||
#define data_in() (ADB_PIN & data_mask) | |||||
static void place_bit( byte bit ) | |||||
{ | |||||
// 100 us bit cell time | |||||
data_lo(); | |||||
_delay_us( 35 ); | |||||
// Difference between a 0 and 1 bit is just this 30us portion in the middle | |||||
if ( bit ) | |||||
data_hi(); | |||||
_delay_us( 30 ); | |||||
data_hi(); | |||||
_delay_us( 35 ); | |||||
} | |||||
static void place_bit0( void ) { place_bit( 0 ); } | |||||
static void place_bit1( void ) { place_bit( 1 ); } | |||||
static void send_byte( byte data ) | |||||
{ | |||||
for ( byte n = 8; n; n-- ) | |||||
{ | |||||
place_bit( data & 0x80 ); | |||||
data <<= 1; | |||||
} | |||||
} | |||||
static void command( byte cmd ) | |||||
{ | |||||
data_lo(); | |||||
_delay_us( 800 ); | |||||
place_bit1(); | |||||
send_byte( cmd ); | |||||
place_bit0(); | |||||
} | |||||
void adb_host_init( void ) | |||||
{ | |||||
// Always keep port output 0, then just toggle DDR to be GND or leave it floating (high). | |||||
ADB_DDR &= ~data_mask; | |||||
ADB_PORT &= ~data_mask; | |||||
#ifdef ADB_PSW_BIT | |||||
// Weak pull-up | |||||
ADB_PORT |= (1<<ADB_PSW_BIT); | |||||
ADB_DDR &= ~(1<<ADB_PSW_BIT); | |||||
#endif | |||||
} | |||||
bool adb_host_psw( void ) | |||||
{ | |||||
#ifdef ADB_PSW_BIT | |||||
return (ADB_PIN & (1<<ADB_PSW_BIT)) != 0; | |||||
#else | |||||
return true; | |||||
#endif | |||||
} | |||||
// Waits while data == val, or until us timeout expires. Returns remaining time, | |||||
// zero if timed out. | |||||
static byte while_data( byte us, byte data ) | |||||
{ | |||||
while ( data_in() == data ) | |||||
{ | |||||
delay_loop_usec( 1 /* us period */, 7 /* cycles loop overhead */ ); | |||||
if ( !--us ) | |||||
break; | |||||
} | |||||
return us; | |||||
} | |||||
static byte while_lo( byte us ) { return while_data( us, 0 ); } | |||||
static byte while_hi( byte us ) { return while_data( us, data_mask ); } | |||||
static uint16_t adb_host_talk( byte cmd ) | |||||
{ | |||||
command( cmd ); | |||||
_delay_us( 5 ); | |||||
if ( !while_hi( 260 - 5 ) ) // avg 160 | |||||
return adb_host_nothing; | |||||
// Receive start bit and 16 data bits. | |||||
// Doing them all in loop allows consistent error checking | |||||
uint16_t data = 0; | |||||
byte n = 17; | |||||
do | |||||
{ | |||||
data <<= 1; | |||||
enum { timeout = 130 }; // maximum bit cell time | |||||
byte lo = while_lo( timeout ); | |||||
if ( !lo ) | |||||
goto error; // timeout | |||||
byte hi = while_hi( lo ); | |||||
if ( !hi ) | |||||
goto error; // timeout | |||||
if ( timeout-lo < lo-hi ) | |||||
data |= 1; | |||||
else if ( n == 17 ) | |||||
goto error; // start bit is wrong | |||||
} | |||||
while ( --n ); | |||||
// duration must be split in two due to 255 limit | |||||
if ( !while_lo( 255 ) && !while_lo( 351 - 255 ) ) | |||||
goto error; | |||||
if ( while_hi( 91 ) ) | |||||
goto error; | |||||
return data; | |||||
error: | |||||
return adb_host_error; | |||||
} | |||||
uint16_t adb_host_kbd_recv( void ) | |||||
{ | |||||
return adb_host_talk( adb_cmd_read + 0 ); | |||||
} | |||||
uint16_t adb_host_kbd_modifiers( void ) | |||||
{ | |||||
return adb_host_talk( adb_cmd_read + 2 ); | |||||
} | |||||
void adb_host_listen( byte cmd, byte data_h, byte data_l ) | |||||
{ | |||||
command( cmd ); | |||||
_delay_us( 200 ); | |||||
place_bit1(); | |||||
send_byte( data_h ); | |||||
send_byte( data_l ); | |||||
place_bit0(); | |||||
} | |||||
void adb_host_kbd_led( byte led ) | |||||
{ | |||||
adb_host_listen( adb_cmd_write + 2, 0, led & 0x07 ); | |||||
} | |||||
/* 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. */ |
// Basic support for ADB keyboard | |||||
#ifndef ADB_BLARGG_H | |||||
#define ADB_BLARGG_H | |||||
#include <stdint.h> | |||||
#include <stdbool.h> | |||||
// Sets up ADB bus. Doesn't send anything to keyboard. | |||||
void adb_host_init( void ); | |||||
// Receives key press event from keyboard. | |||||
// 0xKKFF: one key changed state | |||||
// 0xKKKK: two keys changed state | |||||
enum { adb_host_nothing = 0 }; // no keys changed state | |||||
enum { adb_host_error = 0xFFFE }; // receive error | |||||
uint16_t adb_host_kbd_recv( void ); | |||||
// Current state of keyboard modifiers and a few other keys | |||||
// Returns adb_host_nothing if keyboard didn't respond. | |||||
// Returns adb_host_error if error receiving. | |||||
uint16_t adb_host_kbd_modifiers( void ); | |||||
// Sends command and two bytes of data to keyboard | |||||
void adb_host_listen( uint8_t cmd, uint8_t data_h, uint8_t data_l ); | |||||
// Sets keyboard LEDs. Note that bits are inverted here, so 1 means off, 0 means on. | |||||
void adb_host_kbd_led( uint8_t led ); | |||||
// State of power switch (false = pressed), or true if unsupported | |||||
bool adb_host_psw( void ); | |||||
// Legacy support | |||||
#define ADB_POWER 0x7F | |||||
#define ADB_CAPS 0x39 | |||||
#endif |