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xt_usb: read data on falling edge soft/hard reset

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See https://github.com/tmk/tmk_keyboard/wiki/IBM-PC-XT-Keyboard-Protocol
- read data on falling edge of clock
- add soft reset and hard reset
This commit is contained in:
tmk 2018-02-28 15:48:06 +09:00
parent 3526fcaf15
commit 8a92f254e1
6 changed files with 78 additions and 39 deletions
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12
converter/xt_usb/Makefile
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@ -11,7 +11,9 @@ TMK_DIR = ../../tmk_core
TARGET_DIR = .
# project specific files
SRC = matrix.c \
SRC = protocol/xt_interrupt.c \
protocol/xt_io_avr.c \
matrix.c \
led.c
ifdef KEYMAP
@ -61,7 +63,7 @@ ARCH = AVR8
F_USB = $(F_CPU)
# Interrupt driven control endpoint task(+60)
#OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
# Boot Section Size in *bytes*
@ -71,6 +73,7 @@ F_USB = $(F_CPU)
# LUFA bootloader 4096
# USBaspLoader 2048
OPT_DEFS += -DBOOTLOADER_SIZE=512
#OPT_DEFS += -DBOOTLOADER_SIZE=4096
# Build Options
@ -84,11 +87,6 @@ COMMAND_ENABLE = yes # Commands for debug and configuration
NKRO_ENABLE = yes # USB Nkey Rollover
# XT/2 Options
#
XT_USE_INT = yes # uses external interrupt for falling edge of PS/2 clock pin
# Optimize size but this may cause error "relocation truncated to fit"
#EXTRALDFLAGS = -Wl,--relax

19
converter/xt_usb/config.h
View file

@ -45,8 +45,6 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
/*
* XT Pin interrupt
*/
#ifdef XT_USE_INT
/* uses INT1 for clock line(ATMega32U4) */
#define XT_CLOCK_PORT PORTD
#define XT_CLOCK_PIN PIND
#define XT_CLOCK_DDR DDRD
@ -55,9 +53,23 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#define XT_DATA_PIN PIND
#define XT_DATA_DDR DDRD
#define XT_DATA_BIT 0
#define XT_RST_PORT PORTB
#define XT_RST_PIN PINB
#define XT_RST_DDR DDRB
#define XT_RST_BIT 7
/* hard reset: low pulse for 500ms and after that HiZ for safety */
#define XT_RESET() do { \
XT_RST_PORT &= ~(1<<XT_RST_BIT); \
XT_RST_DDR |= (1<<XT_RST_BIT); \
_delay_ms(500); \
XT_RST_DDR &= ~(1<<XT_RST_BIT); \
} while (0)
/* INT1 for falling edge of clock line */
#define XT_INT_INIT() do { \
EICRA |= ((1<<ISC11) | \
(1<<ISC10)); \
(0<<ISC10)); \
} while (0)
#define XT_INT_ON() do { \
EIMSK |= (1<<INT1); \
@ -66,6 +78,5 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
EIMSK &= ~(1<<INT1); \
} while (0)
#define XT_INT_VECT INT1_vect
#endif
#endif