X-Git-Url: http://mj.ucw.cz/gitweb/?a=blobdiff_plain;f=lib%2Futil.h;h=18e36524b422304b6ec1b0aa98e5bd0e8486dcc9;hb=3038b627489dae62ce54d415a4bcfc4cfd28f084;hp=b06b6add070627072e181fbfb9d04bc793a06185;hpb=d910e34d0deecc4af18cf98377479cdfb78eac31;p=home-hw.git

diff --git a/lib/util.h b/lib/util.h
index b06b6ad..18e3652 100644
--- a/lib/util.h
+++ b/lib/util.h
@@ -23,6 +23,8 @@ typedef int32_t s32;
 
 #define MIN(x,y) ((x) < (y) ? (x) : (y))
 #define MAX(x,y) ((x) > (y) ? (x) : (y))
+#define CLAMP(x,min,max) ({ typeof(x) _t=x; (_t < min) ? min : (_t > max) ? max : _t; })
+#define ARRAY_SIZE(ary) (sizeof(ary)/sizeof((ary)[0]))
 
 #define UNUSED __attribute__((unused))
 
@@ -76,8 +78,26 @@ static inline void put_u32_le(byte *p, u32 x)
 	p[0] = x & 0xff;
 }
 
-// debug.c
+// CPU instructions not covered by libopencm3
 
-void debug_printf(const char *fmt, ...);
+static inline void wait_for_interrupt(void)
+{
+	asm volatile ("wfi");
+}
+
+// A compiler memory barrier
+
+static inline void barrier(void)
+{
+	asm volatile ("" : : : "memory");
+}
+
+// util-debug.c
+
+void debug_printf(const char *fmt, ...) __attribute__((format(printf,1,2)));
 void debug_puts(const char *s);
 void debug_putc(int c);
+void debug_flush(void);
+
+void debug_led(bool light);
+void debug_led_toggle(void);