8 files changed, 69 insertions, 20 deletions
diff --git a/project/Core/Inc/Activities/activity4.h b/project/Core/Inc/Activities/activity4.h
new file mode 100644
index 0000000..6a1a93f
--- /dev/null
+++ b/project/Core/Inc/Activities/activity4.h
@@ -0,0 +1,13 @@
+/*
+ * activity4.h
+ *
+ *  Created on: Sep 22, 2025
+ *      Author: sowgro
+ */
+
+#ifndef INC_ACTIVITIES_ACTIVITY4_H_
+#define INC_ACTIVITIES_ACTIVITY4_H_
+
+void activity4_run();
+
+#endif /* INC_ACTIVITIES_ACTIVITY4_H_ */
diff --git a/project/Core/Inc/Activities/activity5.h b/project/Core/Inc/Activities/activity5.h
index e74b3f0..90c81bb 100644
--- a/project/Core/Inc/Activities/activity5.h
+++ b/project/Core/Inc/Activities/activity5.h
@@ -8,6 +8,6 @@
 #ifndef INC_ACTIVITIES_ACTIVITY5_H_
 #define INC_ACTIVITIES_ACTIVITY5_H_
 
-void run2();
+void activity5_run();
 
 #endif /* INC_ACTIVITIES_ACTIVITY5_H_ */
diff --git a/project/Core/Inc/Activities/activity6.h b/project/Core/Inc/Activities/activity6.h
new file mode 100644
index 0000000..f170b22
--- /dev/null
+++ b/project/Core/Inc/Activities/activity6.h
@@ -0,0 +1,13 @@
+/*
+ * activity6.h
+ *
+ *  Created on: Sep 26, 2025
+ *      Author: sowgro
+ */
+
+#ifndef INC_ACTIVITIES_ACTIVITY6_H_
+#define INC_ACTIVITIES_ACTIVITY6_H_
+
+void activity6_run();
+
+#endif /* INC_ACTIVITIES_ACTIVITY6_H_ */
diff --git a/project/Core/Inc/Activities/midi_header.h b/project/Core/Inc/Activities/midi_header.h
deleted file mode 100644
index 62904a3..0000000
--- a/project/Core/Inc/Activities/midi_header.h
+++ /dev/null
@@ -1,13 +0,0 @@
-/*
- * midi_header.h
- *
- *  Created on: Sep 22, 2025
- *      Author: sowgro
- */
-
-#ifndef INC_ACTIVITIES_MIDI_HEADER_H_
-#define INC_ACTIVITIES_MIDI_HEADER_H_
-
-void run();
-
-#endif /* INC_ACTIVITIES_MIDI_HEADER_H_ */
diff --git a/project/Core/Src/Activties/midi_header.c b/project/Core/Src/Activties/activity4.c
index de3dc68..44653e1 100644
--- a/project/Core/Src/Activties/midi_header.c
+++ b/project/Core/Src/Activties/activity4.c
@@ -18,7 +18,7 @@ typedef struct {
 	uint16_t division;
 } header;
 
-void run() {
+void activity4_run() {
 	header* p_header;
 
 	p_header = (header *) (get_song(0).p_song);
diff --git a/project/Core/Src/Activties/activity5.c b/project/Core/Src/Activties/activity5.c
index 9201f70..f214ca2 100644
--- a/project/Core/Src/Activties/activity5.c
+++ b/project/Core/Src/Activties/activity5.c
@@ -17,7 +17,7 @@ void read_and_print_char() {
 	}
 }
 
-void run2() {
+void activity5_run() {
 	for(;;) {
 		read_and_print_char();
 	}
diff --git a/project/Core/Src/Activties/activity6.c b/project/Core/Src/Activties/activity6.c
new file mode 100644
index 0000000..c32c03e
--- /dev/null
+++ b/project/Core/Src/Activties/activity6.c
@@ -0,0 +1,35 @@
+/*
+ * activity6.c
+ *
+ *  Created on: Sep 25, 2025
+ *      Author: sowgro
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+
+typedef struct {
+	uint32_t CSR;
+	uint32_t RVR;
+	uint32_t CVR;
+	uint32_t CALIB;
+} sys_tick;
+
+
+void activity6_run() {
+	sys_tick *s = (sys_tick *) 0xE000E010;
+	printf("%lu\r\n", s->CVR);
+
+	s->RVR = 8000000;
+	s->CSR = 1;
+
+	int count = 0;
+	for(;;) {
+		if (!s->CVR) {
+			printf("%i\r\n", count);
+			count++;
+		}
+	}
+
+
+}
diff --git a/project/Core/Src/main.c b/project/Core/Src/main.c
index ff819f2..0ea5a3f 100644
--- a/project/Core/Src/main.c
+++ b/project/Core/Src/main.c
@@ -8,9 +8,9 @@
 #include "LED.h"
 #include "UART.h"
 #include "demo.h"
+#include "activity4.h"
 #include "activity5.h"
-#include "midi_header.h"
-
+#include "activity6.h"
 #include <stdio.h>
 
 int main(void){
@@ -22,8 +22,9 @@ int main(void){
 	
 //	printf("Hello world \r\n");
 
-//	run();
-	run2();
+//	activity4_run();
+//	activity5_run();
+	activity6_run();
 
 	// application run function
 	//	run_demo() ;