1 files changed, 12 insertions, 2 deletions
diff --git a/stm-fmc.h b/stm-fmc.h
index 7b73a94..1e6a670 100644
--- a/stm-fmc.h
+++ b/stm-fmc.h
@@ -44,8 +44,18 @@
 
 #define FMC_NWAIT_IDLE                  GPIO_PIN_SET
 
-
-extern void fmc_init(void);
+#define fmc_af_gpio(port, pins)			       \
+    GPIO_InitStruct.Pin = pins;			       \
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;	       \
+    GPIO_InitStruct.Pull = GPIO_NOPULL;		       \
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; \
+    GPIO_InitStruct.Alternate = GPIO_AF12_FMC;	       \
+    __HAL_RCC_##port##_CLK_ENABLE();		       \
+    HAL_GPIO_Init(port, &GPIO_InitStruct)
+
+
+extern HAL_StatusTypeDef fmc_init(void);
+extern void fmc_init_gpio(void);
 
 extern int fmc_write_32(uint32_t addr, uint32_t *data);
 extern int fmc_read_32(uint32_t addr, uint32_t *data);