diff --git a/epicardium/epicardium.h b/epicardium/epicardium.h
index 9a848100c8fbfed895262f5bc57cadade720d9de..4eea7d3fee2f2af194c669d4b24b768be41928ca 100644
--- a/epicardium/epicardium.h
+++ b/epicardium/epicardium.h
@@ -127,6 +127,9 @@ typedef _Bool bool;
 #define API_MAX30001_ENABLE        0xf0
 #define API_MAX30001_DISABLE       0xf1
 
+#define API_MAX86150_INIT		0x0100
+#define API_MAX86150_GET_DATA		0x0101
+#define API_MAX86150_SET_LED_AMPLITUDE	0x0102
 
 /* clang-format on */