From 27c149efe030b6fd24c0cc1475ea509da1a72821 Mon Sep 17 00:00:00 2001
From: Damien George
Date: Mon, 6 Feb 2017 13:19:52 +1100
Subject: stmhal: Add pyb.fault_debug() function, to control hard-fault
 behaviour.

This new function controls what happens on a hard-fault:
- debugging disabled: board will do a reset
- debugging enabled: board will print registers and stack and flash LEDs

The default is disabled, ie to do a reset.  This is different to previous
behaviour which flashed the LEDs and waited indefinitely.
---
 stmhal/modpyb.c | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'stmhal/modpyb.c')

diff --git a/stmhal/modpyb.c b/stmhal/modpyb.c
index 53b4335e7..93ae5d40b 100644
--- a/stmhal/modpyb.c
+++ b/stmhal/modpyb.c
@@ -38,6 +38,7 @@
 #include "lib/oofatfs/ff.h"
 #include "lib/oofatfs/diskio.h"
 #include "gccollect.h"
+#include "stm32_it.h"
 #include "irq.h"
 #include "systick.h"
 #include "led.h"
@@ -64,6 +65,12 @@
 #include "extmod/vfs.h"
 #include "extmod/utime_mphal.h"
 
+STATIC mp_obj_t pyb_fault_debug(mp_obj_t value) {
+    pyb_hard_fault_debug = mp_obj_is_true(value);
+    return mp_const_none;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_fault_debug_obj, pyb_fault_debug);
+
 /// \function millis()
 /// Returns the number of milliseconds since the board was last reset.
 ///
@@ -131,6 +138,8 @@ MP_DECLARE_CONST_FUN_OBJ_KW(pyb_main_obj); // defined in main.c
 STATIC const mp_map_elem_t pyb_module_globals_table[] = {
     { MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_pyb) },
 
+    { MP_OBJ_NEW_QSTR(MP_QSTR_fault_debug), (mp_obj_t)&pyb_fault_debug_obj },
+
     { MP_OBJ_NEW_QSTR(MP_QSTR_bootloader), (mp_obj_t)&machine_bootloader_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_hard_reset), (mp_obj_t)&machine_reset_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_info), (mp_obj_t)&machine_info_obj },
-- 
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