diff --git a/cntr/fw/include/cntr/crc32.c b/cntr/fw/include/cntr/crc32.c
new file mode 100644
index 0000000..a44bf24
--- /dev/null
+++ b/cntr/fw/include/cntr/crc32.c
@@ -0,0 +1,4 @@
+static uint32_t crc32(uint32_t a, uint32_t b)
+{
+	return 0;
+}