test build of 'Host shield' in minimal env.

protocol/usb_hid/override_wiring.c

@@ -0,0 +1,28 @@
+/*
+ * To keep Timer0 for common/timer.c override arduino/wiring.c.
+ */
+#include <util/delay.h>
+#include "common/timer.h"
+#include "Arduino.h"
+
+
+unsigned long millis()
+{
+    return timer_read();
+}
+unsigned long micros()
+{
+    return timer_read() * 1000UL;
+}
+void delay(unsigned long ms)
+{
+    _delay_ms(ms);
+}
+void delayMicroseconds(unsigned int us)
+{
+    _delay_us(us);
+}
+void init()
+{
+    timer_init();
+}