diff --git a/fw/.gitignore b/fw/.gitignore
index 5484688..23a0ed5 100644
--- a/fw/.gitignore
+++ b/fw/.gitignore
@@ -1,3 +1,9 @@
 .zen
 .vscode
 .ccls-cache
+.cache
+*.bin
+*.lst
+*.map
+*.elf
+*.hex
\ No newline at end of file
diff --git a/fw/blink.c b/fw/blink.c
index 24f11e2..56dcc6e 100644
--- a/fw/blink.c
+++ b/fw/blink.c
@@ -1,6 +1,9 @@
 #include <ch32fun.h>
 
 int main(void) {
-	while(true);
+	unsigned int x = 0;
+	while(true) {
+		x = x+1;
+	}
 	return 0;
 }