From 73a76acef4aa14b042c9c56eef0fd19164afff42 Mon Sep 17 00:00:00 2001
From: sowgro <tpoke.ferrari@gmail.com>
Date: Mon, 22 Sep 2025 23:40:06 -0400
Subject: Submit endian converters

---
 project/Core/Src/Activties/activity4.c        | 26 -------------------
 project/Core/Src/Activties/midi_header.c      | 37 +++++++++++++++++++++++++++
 project/Core/Src/Homework/endian_converters.c | 16 ++++++++++++
 project/Core/Src/main.c                       |  1 +
 4 files changed, 54 insertions(+), 26 deletions(-)
 delete mode 100644 project/Core/Src/Activties/activity4.c
 create mode 100644 project/Core/Src/Activties/midi_header.c
 create mode 100644 project/Core/Src/Homework/endian_converters.c

(limited to 'project/Core/Src')

diff --git a/project/Core/Src/Activties/activity4.c b/project/Core/Src/Activties/activity4.c
deleted file mode 100644
index c6b9b22..0000000
--- a/project/Core/Src/Activties/activity4.c
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * activity4.c
- *
- *  Created on: Sep 16, 2025
- *      Author: sowgro
- */
-
-#include "song.h"
-#include <printf.h>
-
-typedef struct {
-	char chunk_type[4];
-	unsigned int length;
-	unsigned short format;
-	unsigned short ntrcks;
-	unsigned short division;
-} header;
-
-void run() {
-	header* p_header;
-
-	p_header = (header *) (get_song(0).p_song);
-
-	printf("type: %s, length: %u, format: %u, trackCount: %u, division: %u\r\n", p_header->chunk_type, p_header->length, p_header->format, p_header->ntrcks, p_header->division);
-}
-
diff --git a/project/Core/Src/Activties/midi_header.c b/project/Core/Src/Activties/midi_header.c
new file mode 100644
index 0000000..de3dc68
--- /dev/null
+++ b/project/Core/Src/Activties/midi_header.c
@@ -0,0 +1,37 @@
+/*
+ * activity4.c
+ *
+ *  Created on: Sep 16, 2025
+ *      Author: sowgro
+ */
+
+#include "song.h"
+#include <printf.h>
+#include <endian_converters.h>
+#include <stdint.h>
+
+typedef struct {
+	char chunk_type[4];
+	uint32_t length;
+	uint16_t format;
+	uint16_t ntrcks;
+	uint16_t division;
+} header;
+
+void run() {
+	header* p_header;
+
+	p_header = (header *) (get_song(0).p_song);
+
+	p_header->length   = convert_to_uint32((uint8_t*) &p_header->length);
+	p_header->format   = convert_to_uint16((uint8_t*) &p_header->format);
+	p_header->ntrcks   = convert_to_uint16((uint8_t*) &p_header->ntrcks);
+	p_header->division = convert_to_uint16((uint8_t*) &p_header->division);
+
+	printf ("Header: \r\n");
+	printf ("\tLength: %lu\r\n", p_header->length);
+	printf ("\tFormat: %u\r\n", p_header->format);
+	printf ("\tNum Tracks: %u\r\n", p_header->ntrcks);
+	printf ("\tDivision: %u\r\n", p_header->division);
+}
+
diff --git a/project/Core/Src/Homework/endian_converters.c b/project/Core/Src/Homework/endian_converters.c
new file mode 100644
index 0000000..1dbb5f7
--- /dev/null
+++ b/project/Core/Src/Homework/endian_converters.c
@@ -0,0 +1,16 @@
+/*
+ * endian_converters.c
+ *
+ *  Created on: Sep 22, 2025
+ *      Author: sowgro
+ */
+
+#include <stdint.h>
+
+uint16_t convert_to_uint16 (uint8_t* p_value) {
+	return (p_value[0] << 8) + p_value[1];
+}
+
+uint32_t convert_to_uint32 (uint8_t* p_value) {
+	return (p_value[0] << 24) + (p_value[1] << 16) + (p_value[2] << 8) + p_value[3];
+}
diff --git a/project/Core/Src/main.c b/project/Core/Src/main.c
index 247ed1c..8d76d3a 100644
--- a/project/Core/Src/main.c
+++ b/project/Core/Src/main.c
@@ -8,6 +8,7 @@
 #include "LED.h"
 #include "UART.h"
 #include "demo.h"
+#include "midi_header.h"
 
 #include <stdio.h>
 
-- 
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