Merge branch 'master' into PAL1.0

Author: Janne Kiiskilä

README.md

@@ -18,6 +18,19 @@ The application:
 * mbed 6LoWPAN shield (AT86RF212B/[AT86RF233](https://firefly-iot.com/product/firefly-arduino-shield-2-4ghz/)) for 6LoWPAN ND and Thread.
 * Ethernet cable and connection to the internet.
 
+## Supported Target hardware configurations
+
+ This example has been tested in following configuration
+ * K64F + NXP MCR20 15.4 shield (mesh `NANOSTACK_FULL` mode)
+ * NUCLEO_F429ZI + ATMEL AT233 15.4 shield (mesh `LOWPAN_ROUTER` mode)
+ * K64F (Ethernet)
+ * NUCLEO_F429ZI (Ethernet)
+ * UBLOX_EVK_ODIN_W2 (Ethernet)
+ * K64F + GROVE SEEED shield (Wifi)
+ * NUCLEO_F429ZI + GROVE SEEED shield (Wifi)
+
+Apart from this, this example can work on other mbed OS supported hardware boards which support any of the given network interface including Ethernet, WiFi, Mesh (6LoWPAN) or Thread, provided the configuration fulfills condition that the target hardware has TLS entropy implemented for it and the complete example configuration of mbed Client, selected network interface and mbed OS components fits into hardware's given memory size (Flash size and RAM size). 
+
 ## Requirements for non-K64F boards
 
 *   This example requires TLS functionality to be enabled on mbed TLS.

mbed-os.lib

@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os/#1d875083b701a5e530f97ba615e2c0d2060d09e5
+https://github.com/ARMmbed/mbed-os/#e435a07d9252f133ea3d9f6c95dfb176f32ab9b6

mbedtls_mbed_client_config.h

@@ -1,6 +1,15 @@
-/*
+/**
  *  Minimal configuration for using mbedtls as part of mbed-client
  *
+ *  NOTE! This is an optimized, minimal configuration for mbed Client.
+ *  We know it works with mbed Client but if you want to add more
+ *  services/communications to the application yourself - please ensure
+ *  you update this configuration accordingly. The default configuration
+ *  can be found from mbedTLS Github:
+ *
+ *  https://github.com/ARMmbed/mbedtls/blob/development/include/mbedtls/config.h
+ *
+ *
  *  Copyright (C) 2006-2016, ARM Limited, All Rights Reserved
  *  SPDX-License-Identifier: Apache-2.0
  *
@@ -41,7 +50,6 @@
 #define MBEDTLS_ASN1_PARSE_C
 #define MBEDTLS_ASN1_WRITE_C
 #define MBEDTLS_BIGNUM_C
-#define MBEDTLS_CCM_C
 #define MBEDTLS_CIPHER_C
 #define MBEDTLS_CTR_DRBG_C
 #define MBEDTLS_ECP_C
@@ -59,22 +67,12 @@
 // XXX mbedclient needs these: mbedtls_x509_crt_free, mbedtls_x509_crt_init, mbedtls_x509_crt_parse
 #define MBEDTLS_X509_USE_C
 #define MBEDTLS_X509_CRT_PARSE_C
-// a bit wrong way to get mbedtls_ssl_conf_psk:
-// XXX: this should be ifdef'd out from client too
-#define MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED
 
 // XXX: clean these up!!
-#define MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED
-#define MBEDTLS_KEY_EXCHANGE__SOME__ECDHE_ENABLED
-#define MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED
 #define MBEDTLS_SHA512_C
 #define MBEDTLS_ECDH_C
 #define MBEDTLS_GCM_C
-#define MBEDTLS_CCM_C
 
-#define MBEDTLS_PKCS1_V15
-
-#define MBEDTLS_CIPHER_MODE_CBC
 #define MBEDTLS_ECDH_C
 #define MBEDTLS_ECDSA_C
 #define MBEDTLS_X509_CRT_PARSE_C
@@ -89,8 +87,6 @@
 // Remove selftesting and save 11KB of ROM
 #undef MBEDTLS_SELF_TEST
 
-#undef MBEDTLS_SSL_COOKIE_C
-
 // Reduces ROM size by 30 kB
 #undef MBEDTLS_ERROR_STRERROR_DUMMY
 #undef MBEDTLS_VERSION_FEATURES
@@ -101,7 +97,7 @@
 // dep of the previous
 #define MBEDTLS_BASE64_C
 
-// reduce IO buffer to save RAM, default is 16KB
+// Reduce IO buffer to save RAM, default is 16KB
 #define MBEDTLS_SSL_MAX_CONTENT_LEN 2048
 
 // define to save 8KB RAM at the expense of ROM