diff --git a/drv/stk_regs.h b/drv/stk_regs.h
new file mode 100644
index 0000000..5739f0d
--- /dev/null
+++ b/drv/stk_regs.h
@@ -0,0 +1,90 @@
+/** @file stk_regs.h
+ * Module defining systick (STK) registers.
+ *
+ * Mainly made to be used by the stk module. It is recommanded to go through
+ * the functions provided by that module instead of directly using the registers
+ * defined here.
+ */
+
+#ifndef _STK_REGS_H_
+#define _STK_REGS_H_
+
+//--includes--------------------------------------------------------------------
+
+#include "reg.h"
+
+#include <stdint.h>
+
+
+//--type definitions------------------------------------------------------------
+
+#define STK_BASE_ADDRESS 0xE000E010
+
+union STK_CTRL {
+	struct __attribute__((packed)) {
+		uint32_t ENABLE:1;
+		uint32_t TICKINT:1;
+		uint32_t CLKSOURCE:1;
+		uint32_t reserved1:13;
+		uint32_t COUNTFLAG:1;
+		uint32_t reserved2:15;
+	};
+	uint32_t word;
+};
+
+#define STK_CTRL_ENABLE    reg_def( 0,  1)
+#define STK_CTRL_TICKINT   reg_def( 1,  1)
+#define STK_CTRL_CLKSOURCE reg_def( 2,  1)
+#define STK_CTRL_reserved  reg_def( 3, 13)
+#define STK_CTRL_COUNTFLAG reg_def(16,  1)
+#define STK_CTRL_reserved2 reg_def(17, 15)
+
+union STK_LOAD {
+	struct __attribute__((packed)) {
+		uint32_t RELOAD:24;
+		uint32_t reserved1:8;
+	};
+	uint32_t word;
+};
+
+#define STK_LOAD_RELOAD	   reg_def( 0, 24)
+#define STK_LOAD_reserved1 reg_def(24,  8)
+
+union STK_VAL {
+	struct __attribute__((packed)) {
+		uint32_t CURRENT:24;
+		uint32_t reserved1:8;
+	};
+	uint32_t word;
+};
+
+#define STK_VAL_CURRENT	  reg_def( 0, 24)
+#define STK_VAL_reserved1 reg_def(24,  8)
+
+union STK_CALIB {
+	struct __attribute__((packed)) {
+		uint32_t TENMS:24;
+		uint32_t reserved1:6;
+		uint32_t SKEW:1;
+		uint32_t NOREF:1;
+	};
+	uint32_t word;
+};
+
+#define STK_CALIB_RELOAD    reg_def( 0, 24)
+#define STK_CALIB_reserved1 reg_def(24,  6)
+#define STK_CALIB_SKEW      reg_def(30,  1)
+#define STK_CALIB_NOREF     reg_def(31,  1)
+
+struct __attribute__((packed)) STK {
+	union STK_CTRL CTRL;
+	union STK_LOAD LOAD;
+	union STK_VAL VAL;
+	union STK_CALIB CALIB;
+};
+
+
+//--functions-------------------------------------------------------------------
+
+#endif //_STK_REGS_H_
+