1 files changed, 34 insertions, 0 deletions
diff --git a/stmhal/boards/stm32f4xx-prefix.c b/stmhal/boards/stm32f4xx-prefix.c
new file mode 100644
index 0000000000..e68de4cf4e
--- /dev/null
+++ b/stmhal/boards/stm32f4xx-prefix.c
@@ -0,0 +1,34 @@
+// stm32fxx-prefix.c becomes the initial portion of the generated pins file.
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stm32f4xx.h>
+
+#include "misc.h"
+#include "mpconfig.h"
+#include "qstr.h"
+#include "obj.h"
+
+#include "pin.h"
+
+#define AF(af_idx, af_fn, af_unit, af_type, af_ptr) \
+{ \
+    { &pin_af_obj_type }, \
+    .idx = (af_idx), \
+    .fn = AF_FN_ ## af_fn, \
+    .unit = (af_unit), \
+    .type = AF_PIN_TYPE_ ## af_fn ## _ ## af_type, \
+    .af_fn = (af_ptr) \
+}
+
+#define PIN(p_port, p_pin, p_num_af, p_af) \
+{ \
+    { &pin_obj_type }, \
+    .name = #p_port #p_pin, \
+    .port = PORT_ ## p_port, \
+    .pin = (p_pin), \
+    .num_af = (p_num_af), \
+    .pin_mask = (1 << ((p_pin) & 0x0f)), \
+    .gpio = GPIO ## p_port, \
+    .af = p_af, \
+}