Add board-io, replace sevenseg in sw

sw/board_io.h

@@ -1,5 +1,5 @@
-#ifndef _SEVEN_SEG
-#define _SEVEN_SEG
+#ifndef _BOARD_IO_H
+#define _BOARD_IO_H
 
 #include <stdint.h>
 
@@ -9,4 +9,8 @@ uint8_t hex_set_24(uint32_t val);
 
 void hex_enable(uint8_t mask);
 
+uint8_t sw_read();
+
+void led_set(uint8_t val);
+
 #endif

sw/board_io.s

@@ -6,6 +6,8 @@
 .export _hex_set_16
 .export _hex_set_24
 .export _hex_enable
+.export _sw_read
+.export _led_set
 
 .autoimport	on
 
@@ -52,4 +54,18 @@ _hex_set_24:
 ; Set the mask for seven seg enables
 _hex_enable:
         sta SEVEN_SEG+3
+        rts
+
+; @out A: The Value of the switches
+; Reads the current values of the switches.
+_sw_read:
+        lda SW
+        ldx #$0
+        rts
+
+; @in A: val
+; @out A: 0 for success, 1 for failure
+; Sets the LEDs
+_led_set:
+        sta LED
         rts

sw/io.inc65

@@ -5,4 +5,7 @@ UART_TXB    = UART
 UART_RXB    = UART
 UART_STATUS = UART + 1
 
+LED         = $7ff6
+SW          = LED
+
 IRQ_STATUS  = $7fff

sw/irq.c

@@ -4,7 +4,6 @@
 
 #include "interrupt.h"
 #include "uart.h"
-#include "sevenseg.h"
 
 char lastchar;
 

sw/main.c

@@ -1,11 +1,12 @@
 #include <stdint.h>
 #include <conio.h>
 
-#include "sevenseg.h"
+#include "board_io.h"
 #include "uart.h"
 
 int main() {
     int i;
+    uint8_t sw;
     char s[16];
     s[15] = 0;
 
@@ -13,6 +14,10 @@ int main() {
     cprintf("Hello, world!\n");
 
     while (1) {
+
+        sw = sw_read();
+        led_set(sw);
+
         cscanf("%15s", s);
         cprintf("\n");
         for (i = 0; i < 16; i++)

sw/tests/test_main.c

@@ -1,6 +1,6 @@
 #include <stdio.h>
 
-#include "sevenseg.h"
+#include "board_io.h"
 #include "uart.h"
 #include "interrupt.h"