diff --git a/firmware/uart.c b/firmware/uart.c
index dadc9c5..25c4875 100644
--- a/firmware/uart.c
+++ b/firmware/uart.c
@@ -1,5 +1,6 @@
 #include "config.h"
 #include "uart.h"
+#include "util.h"
 
 void uart_init(int uart)
 {
@@ -75,7 +76,7 @@ void uart_put_bin(int uart, uint8_t x)
 	}
 }
 
-void uart1_put_hex(int uart, uint8_t x)
+void uart_put_hex(int uart, uint8_t x)
 {
 	uart_put(uart, hex[x >> 4]);
 	uart_put(uart, hex[x & 15]);
diff --git a/firmware/zoom.c b/firmware/zoom.c
index 928ac7b..e24c217 100644
--- a/firmware/zoom.c
+++ b/firmware/zoom.c
@@ -1,8 +1,17 @@
 #include "config.h"
+#include "uart.h"
+#include <stdio.h>
+
 
 int main(void)
 {
 	config_init();
-
+	uart1_set_rate(115200);
+	uart1_init();
+	
+	while(1) {
+		uart1_put_string("--> ");
+		printf("hello, world\r\n");
+	}
 	return 0;
 }
diff --git a/firmware/zoom.mcp b/firmware/zoom.mcp
index 5b7044b..bca32e8 100644
--- a/firmware/zoom.mcp
+++ b/firmware/zoom.mcp
@@ -23,20 +23,24 @@ file_002=no
 file_003=no
 file_004=no
 file_005=no
+file_006=no
+file_007=no
 [FILE_INFO]
 file_000=zoom.c
 file_001=config.c
 file_002=uart.c
-file_003=config.h
-file_004=uart.h
-file_005=p33fj256gp710.gld
+file_003=util.c
+file_004=config.h
+file_005=uart.h
+file_006=util.h
+file_007=p33fj256gp710.gld
 [SUITE_INFO]
 suite_guid={479DDE59-4D56-455E-855E-FFF59A3DB57E}
 suite_state=
 [TOOL_SETTINGS]
 TS{7D9C6ECE-785D-44CB-BA22-17BF2E119622}=-g
 TS{25AC22BD-2378-4FDB-BFB6-7345A15512D3}=-g -Wall
-TS{7DAC9A1D-4C45-45D6-B25A-D117C74E8F5A}=-Map="$(BINDIR_)$(TARGETBASE).map" --report-mem -o"$(BINDIR_)$(TARGETBASE).$(TARGETSUFFIX)"
+TS{7DAC9A1D-4C45-45D6-B25A-D117C74E8F5A}=--heap=1024 -Map="$(BINDIR_)$(TARGETBASE).map" --report-mem -o"$(BINDIR_)$(TARGETBASE).$(TARGETSUFFIX)"
 TS{509E5861-1E2A-483B-8B6B-CA8DB7F2DD78}=
 [INSTRUMENTED_TRACE]
 enable=0