STM32F2: Add SYSCFG support.

Turn it on at init() time on F2.

Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>

3 files changed, 16 insertions, 1 deletions

diff --git a/wirish/boards.cpp b/wirish/boards.cpp
index 7616245..471325f 100644
--- a/wirish/boards.cpp
+++ b/wirish/boards.cpp
@@ -71,10 +71,18 @@ void init(void) {
     setup_adcs();
     setup_timers();
     wirish::priv::board_setup_usb();
+    wirish::priv::series_init();
     boardInit();
 }
 
-/* Provide a default boardInit(). */
+/* Provide a default no-op series_init() */
+namespace wirish {
+    namespace priv {
+        __weak void series_init(void) {}
+    }
+}
+
+/* Provide a default no-op boardInit(). */
 __weak void boardInit(void) {
 }
 
diff --git a/wirish/boards_private.h b/wirish/boards_private.h
index cdac844..4607913 100644
--- a/wirish/boards_private.h
+++ b/wirish/boards_private.h
@@ -59,6 +59,7 @@ namespace wirish {
         void board_setup_clock_prescalers(void);
         void board_setup_gpio(void);
         void board_setup_usb(void);
+        void series_init(void);
 
     }
 }
diff --git a/wirish/stm32f2/boards_setup.cpp b/wirish/stm32f2/boards_setup.cpp
index 9832bb7..d1ceac0 100644
--- a/wirish/stm32f2/boards_setup.cpp
+++ b/wirish/stm32f2/boards_setup.cpp
@@ -37,6 +37,7 @@
 #include "boards_private.h"
 
 #include <libmaple/gpio.h>
+#include <libmaple/syscfg.h>
 #include <wirish/wirish_types.h>
 
 // PLL configuration for 25 MHz external oscillator --> 120 MHz SYSCLK.
@@ -85,5 +86,10 @@ namespace wirish {
             // Nothing to do.
         }
 
+        void series_init(void) {
+            // We need SYSCFG for external interrupts
+            syscfg_init();
+        }
+
     }
 }