Add MCUBoot library

  Access libbootutil functions
  confirmSketch example

Author: pennam

libraries/MCUboot/examples/confirmSketch/confirmSketch.ino

@@ -0,0 +1,36 @@
+/*
+  Blink
+  Turns an LED on for one second, then off for one second, repeatedly.
+  Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO
+  it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to
+  the correct LED pin independent of which board is used.
+  If you want to know what pin the on-board LED is connected to on your Arduino
+  model, check the Technical Specs of your board at:
+  https://www.arduino.cc/en/Main/Products
+  modified 8 May 2014
+  by Scott Fitzgerald
+  modified 2 Sep 2016
+  by Arturo Guadalupi
+  modified 8 Sep 2016
+  by Colby Newman
+  This example code is in the public domain.
+  https://www.arduino.cc/en/Tutorial/BuiltInExamples/Blink
+*/
+
+#include <MCUboot.h>
+
+// the setup function runs once when you press reset or power the board
+void setup() {
+  // initialize digital pin LED_BUILTIN as an output.
+  pinMode(LED_BUILTIN, OUTPUT);
+  // set confirmed flag to avoid MCUBoot reverts to previous application at next reset
+  MCUboot::confirmSketch();
+}
+
+// the loop function runs over and over again forever
+void loop() {
+  digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
+  delay(1000);                       // wait for a second
+  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
+  delay(1000);                       // wait for a second
+}

libraries/MCUboot/library.properties

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+name=MCUboot
+version=0.0.1
+author=Arduino
+maintainer=Arduino <info@arduino.cc>
+sentence=Wrapper library for MCUboot
+paragraph=
+category=Other
+url=
+architectures=mbed,mbed_portenta
+precompiled=true
+ldflags=-lbootutil

libraries/MCUboot/src/MCUboot.cpp

@@ -0,0 +1,8 @@
+#include "MCUboot.h"
+
+extern "C" int boot_set_confirmed(void);
+
+void MCUboot::confirmSketch()
+{
+  boot_set_confirmed();
+}

libraries/MCUboot/src/MCUboot.h

@@ -0,0 +1,12 @@
+#ifndef MCUboot_h_
+#define MCUboot_h_
+
+class MCUboot
+{
+
+public:
+  static void confirmSketch(void);
+
+};
+
+#endif // MCUboot_h_