From 03bb81215e582d64a8621affcd136351d56d6e79 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=C3=A9a=20Saviot?= <lea.saviot@numworks.com>
Date: Wed, 17 Apr 2019 11:44:57 +0200
Subject: [PATCH] [python/urandom] Use Ion::random to seed urandom

---
 python/port/helpers.cpp    | 4 ++++
 python/port/helpers.h      | 1 +
 python/port/mpconfigport.h | 3 +++
 3 files changed, 8 insertions(+)

diff --git a/python/port/helpers.cpp b/python/port/helpers.cpp
index b30cc00b5..5f772751f 100644
--- a/python/port/helpers.cpp
+++ b/python/port/helpers.cpp
@@ -42,3 +42,7 @@ bool micropython_port_interrupt_if_needed() {
   }
   return false;
 }
+
+int micropython_port_random() {
+  return Ion::random();
+}
diff --git a/python/port/helpers.h b/python/port/helpers.h
index 32215ff80..761f96a7d 100644
--- a/python/port/helpers.h
+++ b/python/port/helpers.h
@@ -12,6 +12,7 @@ extern "C" {
 bool micropython_port_vm_hook_loop();
 bool micropython_port_interruptible_msleep(uint32_t delay);
 bool micropython_port_interrupt_if_needed();
+int micropython_port_random();
 
 #ifdef __cplusplus
 }
diff --git a/python/port/mpconfigport.h b/python/port/mpconfigport.h
index 207d3e6e6..dae99b6f2 100644
--- a/python/port/mpconfigport.h
+++ b/python/port/mpconfigport.h
@@ -89,6 +89,9 @@
 // Whether to include: randrange, randint, choice, random, uniform
 #define MICROPY_PY_URANDOM_EXTRA_FUNCS (1)
 
+// Function to seed URANDOM with on init
+#define MICROPY_PY_URANDOM_SEED_INIT_FUNC micropython_port_random()
+
 // Make a pointer to RAM callable (eg set lower bit for Thumb code)
 // (This scheme won't work if we want to mix Thumb and normal ARM code.)
 #define MICROPY_MAKE_POINTER_CALLABLE(p) (p)