diff --git a/yotta/data/example-selftest/main.cpp b/yotta/data/example-selftest/main.cpp
new file mode 100644
index 0000000..7c23101
--- /dev/null
+++ b/yotta/data/example-selftest/main.cpp
@@ -0,0 +1,248 @@
+/*
+ *  Self-test demonstration program
+ *
+ *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
+ *
+ *  This file is part of mbed TLS (https://tls.mbed.org)
+ */
+
+#if !defined(POLARSSL_CONFIG_FILE)
+#include "mbedtls/config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
+#include "mbedtls/entropy.h"
+#include "mbedtls/hmac_drbg.h"
+#include "mbedtls/ctr_drbg.h"
+#include "mbedtls/dhm.h"
+#include "mbedtls/gcm.h"
+#include "mbedtls/ccm.h"
+#include "mbedtls/md2.h"
+#include "mbedtls/md4.h"
+#include "mbedtls/md5.h"
+#include "mbedtls/ripemd160.h"
+#include "mbedtls/sha1.h"
+#include "mbedtls/sha256.h"
+#include "mbedtls/sha512.h"
+#include "mbedtls/arc4.h"
+#include "mbedtls/des.h"
+#include "mbedtls/aes.h"
+#include "mbedtls/camellia.h"
+#include "mbedtls/base64.h"
+#include "mbedtls/bignum.h"
+#include "mbedtls/rsa.h"
+#include "mbedtls/x509.h"
+#include "mbedtls/xtea.h"
+#include "mbedtls/pkcs5.h"
+#include "mbedtls/ecp.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#if defined(MBEDTLS_PLATFORM_C)
+#include "mbedtls/platform.h"
+#else
+#include <stdio.h>
+#define mbedtls_printf     printf
+#endif
+
+#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
+#include "mbedtls/memory_buffer_alloc.h"
+#endif
+
+int selftest( int argc, char *argv[] )
+{
+    int ret = 0, v;
+#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
+    unsigned char buf[1000000];
+#endif
+
+    if( argc == 2 && strcmp( argv[1], "-quiet" ) == 0 )
+        v = 0;
+    else
+    {
+        v = 1;
+        mbedtls_printf( "\n" );
+    }
+
+#if defined(MBEDTLS_SELF_TEST)
+
+#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
+    mbedtls_memory_buffer_alloc_init( buf, sizeof(buf) );
+#endif
+
+#if defined(MBEDTLS_MD2_C)
+    if( ( ret = mbedtls_md2_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_MD4_C)
+    if( ( ret = mbedtls_md4_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_MD5_C)
+    if( ( ret = mbedtls_md5_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_RIPEMD160_C)
+    if( ( ret = mbedtls_ripemd160_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_SHA1_C)
+    if( ( ret = mbedtls_sha1_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_SHA256_C)
+    if( ( ret = mbedtls_sha256_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_SHA512_C)
+    if( ( ret = mbedtls_sha512_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_ARC4_C)
+    if( ( ret = mbedtls_arc4_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_DES_C)
+    if( ( ret = mbedtls_des_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_AES_C)
+    if( ( ret = mbedtls_aes_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_GCM_C) && defined(MBEDTLS_AES_C)
+    if( ( ret = mbedtls_gcm_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_CCM_C) && defined(MBEDTLS_AES_C)
+    if( ( ret = mbedtls_ccm_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_BASE64_C)
+    if( ( ret = mbedtls_base64_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_BIGNUM_C)
+    if( ( ret = mbedtls_mpi_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_RSA_C)
+    if( ( ret = mbedtls_rsa_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_X509_USE_C)
+    if( ( ret = mbedtls_x509_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_XTEA_C)
+    if( ( ret = mbedtls_xtea_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_CAMELLIA_C)
+    if( ( ret = mbedtls_camellia_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_CTR_DRBG_C)
+    if( ( ret = mbedtls_ctr_drbg_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_HMAC_DRBG_C)
+    if( ( ret = mbedtls_hmac_drbg_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_ECP_C)
+    if( ( ret = mbedtls_ecp_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_DHM_C)
+    if( ( ret = mbedtls_dhm_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_ENTROPY_C)
+    if( ( ret = mbedtls_entropy_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_PKCS5_C)
+    if( ( ret = mbedtls_pkcs5_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#if defined(MBEDTLS_TIMING_C)
+    if( ( ret = mbedtls_timing_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+#else
+    mbedtls_printf( " POLARSSL_SELF_TEST not defined.\n" );
+#endif
+
+    if( v != 0 )
+    {
+#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) && defined(MBEDTLS_MEMORY_DEBUG)
+        mbedtls_memory_buffer_alloc_status();
+#endif
+    }
+
+#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
+    mbedtls_memory_buffer_alloc_free();
+
+    if( ( ret = mbedtls_memory_buffer_alloc_self_test( v ) ) != 0 )
+        return( ret );
+#endif
+
+    if( v != 0 )
+    {
+        mbedtls_printf( "  [ All tests passed ]\n\n" );
+#if defined(_WIN32)
+        mbedtls_printf( "  Press Enter to exit this program.\n" );
+        fflush( stdout ); getchar();
+#endif
+    }
+
+    return( ret );
+}
+
+#if defined(TARGET_LIKE_MBED)
+
+#include "mbed/test_env.h"
+
+int main() {
+    MBED_HOSTTEST_TIMEOUT(40);
+    MBED_HOSTTEST_SELECT(default);
+    MBED_HOSTTEST_DESCRIPTION(mbed TLS selftest program);
+    MBED_HOSTTEST_START("MBEDTLS_SELFTEST");
+    MBED_HOSTTEST_RESULT(selftest(0, NULL) == 0);
+}
+
+#else
+
+int main() {
+    return selftest(0, NULL);
+}
+
+#endif