1 files changed, 21 insertions, 0 deletions
diff --git a/stmhal/rng.c b/stmhal/rng.c
new file mode 100644
index 0000000000..20d840a6a5
--- /dev/null
+++ b/stmhal/rng.c
@@ -0,0 +1,21 @@
+#include "stm32f4xx_hal.h"
+
+#include "misc.h"
+#include "mpconfig.h"
+#include "qstr.h"
+#include "obj.h"
+#include "rng.h"
+
+STATIC RNG_HandleTypeDef RngHandle;
+
+void rng_init(void) {
+    __RNG_CLK_ENABLE();
+    RngHandle.Instance = RNG;
+    HAL_RNG_Init(&RngHandle);
+}
+
+STATIC mp_obj_t pyb_rng_get(void) {
+    return mp_obj_new_int(HAL_RNG_GetRandomNumber(&RngHandle) >> 2);
+}
+
+MP_DEFINE_CONST_FUN_OBJ_0(pyb_rng_get_obj, pyb_rng_get);