X-Git-Url: https://git.friedersdorff.com/?a=blobdiff_plain;f=converter%2Fibmpc_usb%2Fconfig.h;h=d821445f37b9831375bac5f4b869623a7690dca8;hb=3e8289b53ce929484651fc065fb5f718e4e3ae21;hp=fc545f691c8bb98ee73649edf00f4f313510ec44;hpb=2ac00aa8a1cf0cfefb3fe5979c82ffc446b1ccb1;p=max%2Ftmk_keyboard.git

diff --git a/converter/ibmpc_usb/config.h b/converter/ibmpc_usb/config.h
index fc545f69..d821445f 100644
--- a/converter/ibmpc_usb/config.h
+++ b/converter/ibmpc_usb/config.h
@@ -39,43 +39,55 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     keyboard_report->mods == (MOD_BIT(KC_LALT) | MOD_BIT(KC_RALT)) \
 )
 
+// G80-2551 terminal keyboard support
+#define G80_2551_SUPPORT
+
 
 /*
  * Pin and interrupt configuration
  */
 #if defined(__AVR_ATmega32U4__) || defined(__AVR_ATmega32U2__) || defined(__AVR_AT90USB1286__)
-/* uses INT1 for clock line */
+/* clock line */
 #define IBMPC_CLOCK_PORT  PORTD
 #define IBMPC_CLOCK_PIN   PIND
 #define IBMPC_CLOCK_DDR   DDRD
 #define IBMPC_CLOCK_BIT   1
+/* data line */
 #define IBMPC_DATA_PORT   PORTD
 #define IBMPC_DATA_PIN    PIND
 #define IBMPC_DATA_DDR    DDRD
 #define IBMPC_DATA_BIT    0
+/* reset line */
 #define IBMPC_RST_PORT    PORTB
 #define IBMPC_RST_PIN     PINB
 #define IBMPC_RST_DDR     DDRB
 #define IBMPC_RST_BIT1    6
 #define IBMPC_RST_BIT2    7
 
-/* reset for XT keyboard: low pulse for 500ms and after that HiZ for safety */
-#define IBMPC_RESET() do { \
+/* reset for XT Type-1 keyboard: low pulse for 500ms */
+#define IBMPC_RST_HIZ() do { \
+    IBMPC_RST_PORT &= ~(1<<IBMPC_RST_BIT1);  \
+    IBMPC_RST_DDR  &= ~(1<<IBMPC_RST_BIT1);  \
+    IBMPC_RST_PORT &= ~(1<<IBMPC_RST_BIT2);  \
+    IBMPC_RST_DDR  &= ~(1<<IBMPC_RST_BIT2);  \
+} while (0)
+
+#define IBMPC_RST_LO() do { \
     IBMPC_RST_PORT &= ~(1<<IBMPC_RST_BIT1);  \
     IBMPC_RST_DDR  |=  (1<<IBMPC_RST_BIT1);  \
     IBMPC_RST_PORT &= ~(1<<IBMPC_RST_BIT2);  \
     IBMPC_RST_DDR  |=  (1<<IBMPC_RST_BIT2);  \
-    _delay_ms(500);                   \
-    IBMPC_RST_DDR  &= ~(1<<IBMPC_RST_BIT1);  \
-    IBMPC_RST_DDR  &= ~(1<<IBMPC_RST_BIT2);  \
 } while (0)
 
+/* interrupt for clock line */
 #define IBMPC_INT_INIT()  do {  \
     EICRA |= ((1<<ISC11) |      \
               (0<<ISC10));      \
 } while (0)
 
+/* NOTE: clear flag and enabling to ditch unwanted interrupt */
 #define IBMPC_INT_ON()  do {    \
+    EIFR  |= (1<<INTF1);        \
     EIMSK |= (1<<INT1);         \
 } while (0)