diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..7095000
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,7 @@
+
+
+set(COMPONENT_ADD_INCLUDEDIRS
+    "."
+)
+
+register_component()
\ No newline at end of file
diff --git a/PxMatrix.h b/PxMatrix.h
index 74759f6..8655d34 100644
--- a/PxMatrix.h
+++ b/PxMatrix.h
@@ -96,7 +96,7 @@ BSD license, check license.txt for more information
   struct spi_struct_t {
       spi_dev_t * dev;
   #if !CONFIG_DISABLE_HAL_LOCKS
-      xSemaphoreHandle lock;
+      SemaphoreHandle_t lock;
   #endif
       uint8_t num;
   };
@@ -777,7 +777,7 @@ inline void PxMATRIX::fillMatrixBuffer(int16_t x, int16_t y, uint8_t r, uint8_t
     // invert block_y so remaining translation will be more sane
     uint8_t block_y_inv = 1 - block_y;
     uint8_t block_x_inv = blocks_x_per_panel - block_x - 1;
-    uint8_t block_linear_index;
+    uint8_t block_linear_index = 0;
     if (_scan_pattern==WZAGZIG2) {
       block_linear_index = block_x_inv * 2 + block_y;
     }
@@ -1494,4 +1494,4 @@ void PxMATRIX::clearDisplay(bool selected_buffer) {
 #endif
 }
 
-#endif
\ No newline at end of file
+#endif
diff --git a/component.mk b/component.mk
new file mode 100644
index 0000000..7fa03eb
--- /dev/null
+++ b/component.mk
@@ -0,0 +1,2 @@
+COMPONENT_ADD_INCLUDEDIRS := .
+COMPONENT_SRCDIRS := .
\ No newline at end of file