USB performance test firmware project. It does absolutely nothing to start with, but at least the Makefile I just checked in won't blow up! :-)

firmware/usb_performance/Makefile

@@ -0,0 +1,10 @@
+# Hey Emacs, this is a -*- makefile -*-
+
+BINARY = usb_performance
+
+SRC = $(BINARY).c \
+	../common/hackrf_core.c \
+	../common/si5351c.c \
+	../common/bitband.c
+
+include ../common/Makefile_inc.mk

firmware/usb_performance/usb_performance.c

@@ -0,0 +1,22 @@
+#include <hackrf_core.h>
+
+#include <libopencm3/lpc43xx/cgu.h>
+
+int main(void) {
+
+	pin_setup();
+	enable_1v8_power();
+	cpu_clock_init();
+
+	CGU_BASE_PERIPH_CLK = (CGU_BASE_CLK_AUTOBLOCK
+			| (CGU_SRC_PLL1 << CGU_BASE_CLK_SEL_SHIFT));
+
+	CGU_BASE_APB1_CLK = (CGU_BASE_CLK_AUTOBLOCK
+			| (CGU_SRC_PLL1 << CGU_BASE_CLK_SEL_SHIFT));
+	
+	while (1) {
+
+	}
+
+	return 0;
+}