do 4000 point sweep

git-svn-id: https://bucket.mit.edu/svn/nilm/zoom@7611 ddd99763-3ecb-0310-9145-efcb8ce7c51f

firmware/mode_debug.c

@@ -60,7 +60,7 @@ void sweep(void)
 	int16_t a;	
 
 	/* sweep range */
-	for (d = (int32_t)dac - 1500; d < (int32_t)dac + 1500; d++) {
+	for (d = (int32_t)dac - 2000; d < (int32_t)dac + 2000; d++) {
 		if (d < 0x0000) {
 			uart1_put_string("0 0\r\n");
 			continue;

firmware/zoom.c

@@ -8,6 +8,7 @@
 #include "led.h"
 #include "mode.h"
 #include "zoom.h"
+#include "scaling.h"
 
 void degauss(void)
 {