diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..9f4d08c
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,11 @@
+# SmartMatrix Library
+# https://github.com/pixelmatix/SmartMatrix
+# 
+
+cmake_minimum_required(VERSION 3.5)
+
+idf_component_register(SRC_DIRS "src"
+                       INCLUDE_DIRS "src"
+                       REQUIRES driver arduino Adafruit-GFX-Library Adafruit_BusIO)
+
+project(SmartMatrix)
diff --git a/src/MatrixEsp32Hub75Refresh_Impl.h b/src/MatrixEsp32Hub75Refresh_Impl.h
index c928875..dc07941 100644
--- a/src/MatrixEsp32Hub75Refresh_Impl.h
+++ b/src/MatrixEsp32Hub75Refresh_Impl.h
@@ -132,11 +132,11 @@ void SmartMatrixHub75Refresh<refreshDepth, matrixWidth, matrixHeight, panelType,
     matrixUpdateFrames[1] = (frameStruct *)heap_caps_malloc(sizeof(frameStruct), MALLOC_CAP_DMA);
     assert(matrixUpdateFrames[1] != NULL);
 
-    printf("sizeof framestruct: %08X\r\n", (uint32_t)sizeof(frameStruct));
+    printf("sizeof framestruct: %08" PRIX32 "\r\n", (uint32_t)sizeof(frameStruct));
     show_esp32_dma_mem("DMA Memory Available before ptr1 alloc");
-    printf("matrixUpdateFrames[0] pointer: %08X\r\n", (uint32_t)matrixUpdateFrames[0]);
+    printf("matrixUpdateFrames[0] pointer: %08" PRIX32 "\r\n", (uint32_t)matrixUpdateFrames[0]);
     show_esp32_dma_mem("DMA Memory Available before ptr2 alloc");
-    printf("matrixUpdateFrames[1] pointer: %08X\r\n", (uint32_t)matrixUpdateFrames[1]);
+    printf("matrixUpdateFrames[1] pointer: %08" PRIX32 "\r\n", (uint32_t)matrixUpdateFrames[1]);
 
     printf("Frame Structs Allocated from Heap:\r\n");
     show_esp32_all_mem();
@@ -454,10 +454,10 @@ void SmartMatrixHub75Refresh<refreshDepth, matrixWidth, matrixHeight, panelType,
         .bits=MATRIX_I2S_MODE,
         .bufa=0,
         .bufb=0,
-        desccount,
-        desccount,
-        dmadesc_a,
-        dmadesc_b
+        .desccount_a=desccount,
+        .desccount_b=desccount,
+        .lldesc_a=dmadesc_a,
+		.lldesc_b=dmadesc_b
     };
 
     //Setup I2S
diff --git a/src/MatrixEsp32Hub75Refresh_NT_Impl.h b/src/MatrixEsp32Hub75Refresh_NT_Impl.h
index 791e403..ce212d8 100644
--- a/src/MatrixEsp32Hub75Refresh_NT_Impl.h
+++ b/src/MatrixEsp32Hub75Refresh_NT_Impl.h
@@ -446,10 +446,10 @@ void SmartMatrixHub75Refresh_NT<dummyvar>::begin(uint32_t dmaRamToKeepFreeBytes)
         .bits=MATRIX_I2S_MODE,
         .bufa=0,
         .bufb=0,
-        desccount,
-        desccount,
-        dmadesc_a,
-        dmadesc_b
+		.desccount_a=desccount,
+		.desccount_b=desccount,
+		.lldesc_a=dmadesc_a,
+		.lldesc_b=dmadesc_b
     };
 
     //Setup I2S
diff --git a/src/esp32_i2s_parallel.c b/src/esp32_i2s_parallel.c
index e4db0b1..30312c0 100644
--- a/src/esp32_i2s_parallel.c
+++ b/src/esp32_i2s_parallel.c
@@ -26,12 +26,20 @@
 
 #include "soc/i2s_struct.h"
 #include "soc/i2s_reg.h"
+#include "soc/gpio_periph.h"
 #include "driver/periph_ctrl.h"
+#include "driver/gpio.h"
 #include "soc/io_mux_reg.h"
 #include "rom/lldesc.h"
 #include "esp_heap_caps.h"
 #include "esp32_i2s_parallel.h"
 
+#if CONFIG_IDF_TARGET_ESP32
+#include "esp32/rom/gpio.h"
+#else
+#error Target CONFIG_IDF_TARGET is not supported
+#endif
+
 typedef struct {
     volatile lldesc_t *dmadesc_a, *dmadesc_b;
     int desccount_a, desccount_b;