diff --git a/include/libopencm3/stm32/f1/scb.h b/include/libopencm3/stm32/f1/scb.h
index 5c965be8..36b05fda 100644
--- a/include/libopencm3/stm32/f1/scb.h
+++ b/include/libopencm3/stm32/f1/scb.h
@@ -295,6 +295,7 @@
 /* --- SCB functions ------------------------------------------------------- */
 void scb_reset_core(void);
 void scb_reset_system(void);
+void scb_set_priority_grouping(u32 prigroup);
 
 /* TODO: */
 
diff --git a/include/libopencm3/stm32/f2/scb.h b/include/libopencm3/stm32/f2/scb.h
index 5c965be8..36b05fda 100644
--- a/include/libopencm3/stm32/f2/scb.h
+++ b/include/libopencm3/stm32/f2/scb.h
@@ -295,6 +295,7 @@
 /* --- SCB functions ------------------------------------------------------- */
 void scb_reset_core(void);
 void scb_reset_system(void);
+void scb_set_priority_grouping(u32 prigroup);
 
 /* TODO: */
 
diff --git a/include/libopencm3/stm32/f4/scb.h b/include/libopencm3/stm32/f4/scb.h
index 5c965be8..36b05fda 100644
--- a/include/libopencm3/stm32/f4/scb.h
+++ b/include/libopencm3/stm32/f4/scb.h
@@ -295,6 +295,7 @@
 /* --- SCB functions ------------------------------------------------------- */
 void scb_reset_core(void);
 void scb_reset_system(void);
+void scb_set_priority_grouping(u32 prigroup);
 
 /* TODO: */
 
diff --git a/lib/stm32/f1/scb.c b/lib/stm32/f1/scb.c
index 54c57764..8c3238c3 100644
--- a/lib/stm32/f1/scb.c
+++ b/lib/stm32/f1/scb.c
@@ -28,3 +28,8 @@ void scb_reset_system(void)
 {
 	SCB_AIRCR = SCB_AIRCR_VECTKEY | SCB_AIRCR_SYSRESETREQ;
 }
+
+void scb_set_priority_grouping(u32 prigroup)
+{
+	SCB_AIRCR = SCB_AIRCR_VECTKEY | prigroup;
+}
diff --git a/lib/stm32/f2/scb.c b/lib/stm32/f2/scb.c
index 338542e4..33088f3f 100644
--- a/lib/stm32/f2/scb.c
+++ b/lib/stm32/f2/scb.c
@@ -28,3 +28,8 @@ void scb_reset_system(void)
 {
 	SCB_AIRCR = SCB_AIRCR_VECTKEY | SCB_AIRCR_SYSRESETREQ;
 }
+
+void scb_set_priority_grouping(u32 prigroup)
+{
+	SCB_AIRCR = SCB_AIRCR_VECTKEY | prigroup;
+}
diff --git a/lib/stm32/f4/scb.c b/lib/stm32/f4/scb.c
index 18c1337b..30510f85 100644
--- a/lib/stm32/f4/scb.c
+++ b/lib/stm32/f4/scb.c
@@ -28,3 +28,8 @@ void scb_reset_system(void)
 {
 	SCB_AIRCR = SCB_AIRCR_VECTKEY | SCB_AIRCR_SYSRESETREQ;
 }
+
+void scb_set_priority_grouping(u32 prigroup)
+{
+	SCB_AIRCR = SCB_AIRCR_VECTKEY | prigroup;
+}