1 files changed, 20 insertions, 0 deletions
diff --git a/stmhal/mphal.c b/stmhal/mphal.c
new file mode 100644
index 000000000..e8f242051
--- /dev/null
+++ b/stmhal/mphal.c
@@ -0,0 +1,20 @@
+#include <errno.h>
+
+#include "mpconfig.h"
+#include "nlr.h"
+#include "misc.h"
+#include "qstr.h"
+#include "obj.h"
+#include "mphal.h"
+
+// this table converts from HAL_StatusTypeDef to POSIX errno
+const byte mp_hal_status_to_errno_table[4] = {
+    [HAL_OK] = 0,
+    [HAL_ERROR] = EIO,
+    [HAL_BUSY] = EBUSY,
+    [HAL_TIMEOUT] = ETIMEDOUT,
+};
+
+NORETURN void mp_hal_raise(HAL_StatusTypeDef status) {
+    nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, (mp_obj_t)(mp_uint_t)mp_hal_status_to_errno_table[status]));
+}