core: Add PORTA support for Attiny2313

The Attiny2313 has a PORTA, the pins for it are normally used for
reset and the crystal, but it is possible to use them if you use the
internal R/C oscilator.
Simavr didn't support this port on a Attiny2313 yet, so I added it myself.

Signed-off-by: Wander Winkelhorst <w.winkelhorst@gmail.com>
Signed-off-by: Michel Pollet <buserror@gmail.com>

diff --git a/simavr/cores/sim_tiny2313.c b/simavr/cores/sim_tiny2313.c
index e0af609..d9136f3 100644 (file)
--- a/simavr/cores/sim_tiny2313.c
+++ b/simavr/cores/sim_tiny2313.c
@@ -43,7 +43,7 @@ static struct mcu_t {
        avr_eeprom_t    eeprom;
        avr_watchdog_t  watchdog;
        avr_extint_t    extint;
-       avr_ioport_t    portb, portd;
+       avr_ioport_t    porta, portb, portd;
        avr_uart_t              uart;
        avr_timer_t             timer0,timer1;
 } mcu = {
@@ -60,6 +60,9 @@ static struct mcu_t {
                AVR_EXTINT_TINY_DECLARE(0, 'D', 2, EIFR),
                AVR_EXTINT_TINY_DECLARE(1, 'D', 3, EIFR),
        },
+       .porta = {      // port A has no PCInts..
+               .name = 'A', .r_port = PORTA, .r_ddr = DDRA, .r_pin = PINA,
+       },
        .portb = {
                .name = 'B',  .r_port = PORTB, .r_ddr = DDRB, .r_pin = PINB,
                .pcint = {
@@ -226,6 +229,7 @@ static void init(struct avr_t * avr)
        avr_eeprom_init(avr, &mcu->eeprom);
        avr_watchdog_init(avr, &mcu->watchdog);
        avr_extint_init(avr, &mcu->extint);
+       avr_ioport_init(avr, &mcu->porta);
        avr_ioport_init(avr, &mcu->portb);
        avr_ioport_init(avr, &mcu->portd);
        avr_uart_init(avr, &mcu->uart);