1 files changed, 28 insertions, 0 deletions
diff --git a/boards/ST_STM32L_DISCOVERY/board.h b/boards/ST_STM32L_DISCOVERY/board.h
index ddad89b5e..d95480c15 100644
--- a/boards/ST_STM32L_DISCOVERY/board.h
+++ b/boards/ST_STM32L_DISCOVERY/board.h
@@ -69,6 +69,22 @@
 #define PIN_PUDR_FLOATING(n)        (0 << ((n) * 2))
 #define PIN_PUDR_PULLUP(n)          (1 << ((n) * 2))
 #define PIN_PUDR_PULLDOWN(n)        (2 << ((n) * 2))
+#define PIN_AFIO_AF0(n)             (0 << ((n % 8) * 4))
+#define PIN_AFIO_AF1(n)             (1 << ((n % 8) * 4))
+#define PIN_AFIO_AF2(n)             (2 << ((n % 8) * 4))
+#define PIN_AFIO_AF3(n)             (3 << ((n % 8) * 4))
+#define PIN_AFIO_AF4(n)             (4 << ((n % 8) * 4))
+#define PIN_AFIO_AF5(n)             (5 << ((n % 8) * 4))
+#define PIN_AFIO_AF6(n)             (6 << ((n % 8) * 4))
+#define PIN_AFIO_AF7(n)             (7 << ((n % 8) * 4))
+#define PIN_AFIO_AF8(n)             (8 << ((n % 8) * 4))
+#define PIN_AFIO_AF9(n)             (9 << ((n % 8) * 4))
+#define PIN_AFIO_AF10(n)            (10 << ((n % 8) * 4))
+#define PIN_AFIO_AF11(n)            (11 << ((n % 8) * 4))
+#define PIN_AFIO_AF12(n)            (12 << ((n % 8) * 4))
+#define PIN_AFIO_AF13(n)            (13 << ((n % 8) * 4))
+#define PIN_AFIO_AF14(n)            (14 << ((n % 8) * 4))
+#define PIN_AFIO_AF15(n)            (15 << ((n % 8) * 4))
 
 /*
  * Port A setup.
@@ -89,6 +105,8 @@
                                        PIN_PUDR_FLOATING(14) |              \
                                        PIN_PUDR_FLOATING(15)))
 #define VAL_GPIOA_ODR               0xFFFFFFFF
+#define VAL_GPIOA_AFRL				0x00000000
+#define VAL_GPIOA_AFRH				0x00000000
 
 /*
  * Port B setup.
@@ -109,6 +127,8 @@
                                        PIN_PUDR_FLOATING(GPIOB_LED4) |      \
                                        PIN_PUDR_FLOATING(GPIOB_LED3)))
 #define VAL_GPIOB_ODR               0xFFFFFF3F
+#define VAL_GPIOB_AFRL				0x00000000
+#define VAL_GPIOB_AFRH				0x00000000
 
 /*
  * Port C setup.
@@ -122,6 +142,8 @@
 #define VAL_GPIOC_PUPDR             (~(PIN_PUDR_FLOATING(15) |              \
                                        PIN_PUDR_FLOATING(14)))
 #define VAL_GPIOC_ODR               0xFFFFFFFF
+#define VAL_GPIOC_AFRL				0x00000000
+#define VAL_GPIOC_AFRH				0x00000000
 
 /*
  * Port D setup.
@@ -132,6 +154,8 @@
 #define VAL_GPIOD_OSPEEDR           0xFFFFFFFF
 #define VAL_GPIOD_PUPDR             0xFFFFFFFF
 #define VAL_GPIOD_ODR               0xFFFFFFFF
+#define VAL_GPIOD_AFRL				0x00000000
+#define VAL_GPIOD_AFRH				0x00000000
 
 /*
  * Port E setup.
@@ -142,6 +166,8 @@
 #define VAL_GPIOE_OSPEEDR           0xFFFFFFFF
 #define VAL_GPIOE_PUPDR             0xFFFFFFFF
 #define VAL_GPIOE_ODR               0xFFFFFFFF
+#define VAL_GPIOE_AFRL				0x00000000
+#define VAL_GPIOE_AFRH				0x00000000
 
 /*
  * Port H setup.
@@ -152,6 +178,8 @@
 #define VAL_GPIOH_OSPEEDR           0xFFFFFFFF
 #define VAL_GPIOH_PUPDR             0xFFFFFFFF
 #define VAL_GPIOH_ODR               0xFFFFFFFF
+#define VAL_GPIOH_AFRL				0x00000000
+#define VAL_GPIOH_AFRH				0x00000000
 
 #if !defined(_FROM_ASM_)
 #ifdef __cplusplus