added more networking routines

include/interrupts.h

@@ -97,4 +97,11 @@
 
 extern int register_interrupt_handler(uint8_t source, uint8_t level, uint8_t priority, uint8_t intr, void (*handler)(void));
 
+#define ISR_DBUG_ISR	0x01
+#define ISR_USER_ISR 	0x02
+
+extern void isr_init(void);
+extern int isr_register_handler(int type, int vector, int (*handler)(void *, void *), void *hdev, void *harg);
+extern void isr_remove_handler(int type ,int (*handler)(void *, void *));
+extern bool isr_execute_handler(int vector);
 #endif /* _INTERRUPTS_H_ */

include/net_timer.h

@@ -0,0 +1,33 @@
+/*
+ * File:        net_timer.h
+ * Purpose:     Provide a timer use by the dBUG network as a timeout
+ *              indicator
+ *
+ * Notes:
+ */
+
+#ifndef _TIMER_H_
+#define _TIMER_H_
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stddef.h>
+
+typedef struct
+{
+    uint8_t   ch;         /* which channel is this structure for? */
+    uint8_t   lvl;        /* Interrupt level for this channel */
+    uint8_t   pri;        /* Interrupt priority for this channel */
+    uint8_t   reference;  /* timeout indicator */
+    uint32_t  gms;        /* mode select register value */
+    uint16_t  pre;        /* prescale value */
+    uint16_t  cnt;        /* prescaled clocks for timeout */
+} NET_TIMER;
+
+
+extern bool timer_init(uint8_t, uint8_t, uint8_t);
+
+/* Vector numbers for all the timer channels */
+#define TIMER_VECTOR(x)     (126-x)
+
+#endif /* _TIMER_H_ */