Added C interface to timer handling.

inc/ip65.h

@@ -178,6 +178,20 @@ unsigned char __fastcall__ udp_send(const unsigned char* buf, unsigned int len,
                                     unsigned long dest, unsigned int dest_port,
                                     unsigned int src_port);
 
+// Get number of milliseconds since initialization
+//
+// Inputs: None
+// Output: Current number of milliseconds
+//
+unsigned int timer_read(void);
+
+// Check if specified period of time has passed yet
+//
+// Inputs: time: Number of milliseconds we are willing to wait for
+// Output: 1 if timeout occured, 0 otherwise
+//
+unsigned char __fastcall__ timer_timeout(unsigned int time);
+
 // User abort control
 //
 // Control if the user can abort blocking functions with the abort key

ip65/Makefile

@@ -30,6 +30,7 @@ IP65OBJS=\
 	ip65_c.o \
 	tftp.o \
 	timer.o \
+	timer_c.o \
 	output_buffer.o \
 	parser.o \
 	sntp.o \

ip65/timer_c.s

@@ -0,0 +1,17 @@
+.include "../inc/common.i"
+
+.export _timer_read
+.export _timer_timeout
+
+.import timer_read
+.import timer_timeout
+
+_timer_read := timer_read
+
+_timer_timeout:
+  jsr timer_timeout
+  ldx #$00
+  txa
+  rol
+  eor #$01
+  rts