eRPC updates 01/2021

-- Update/correct erpc README.md.
-- Several MISRA C-2012 violations addressed.
-- Add missing GPIO-less support into the erpc DSPI transport layer to be aligned with the SPI transport.

Author: MichalPrincNXP

README.md

@@ -26,7 +26,8 @@ Client side usage:
 void example_client(void) {
     // Initialize client running over UART.
     erpc_client_init(
-        erpc_transport_cmsis_uart_init(Driver_USART0);
+        erpc_transport_cmsis_uart_init(Driver_USART0),
+        erpc_mbf_dynamic_init());
 
     // Now we can call the remote function to turn on the green LED.
     set_led(kGreen, true);
@@ -43,7 +44,8 @@ void set_led(LEDName whichLed, bool onOrOff) {
 void example_server(void) {
     // Initialize server running over UART.
     erpc_server_init(
-        erpc_transport_cmsis_uart_init(Driver_USART0);
+        erpc_transport_cmsis_uart_init(Driver_USART0),
+        erpc_mbf_dynamic_init());
 
     // Add the IO service.
     erpc_add_service_to_server(create_IO_service());
@@ -61,20 +63,32 @@ Supported transports:
 * NXP Kinetis SPI and DSPI
 * POSIX and Windows serial port
 * TCP/IP (mostly for testing)
-* [NXP RPMsg-Lite](https://github.com/NXPmicro/rpmsg-lite)
+* [NXP RPMsg-Lite / RPMsg TTY](https://github.com/NXPmicro/rpmsg-lite)
+* SPIdev Linux
+* USB CDC
+* NXP Messaging Unit
 
-eRPC is available with an unrestrictive BSD 3-clause license. See the LICENSE file for the full license text.
+eRPC is available with an unrestrictive BSD 3-clause license. See the [LICENSE file](https://github.com/EmbeddedRPC/erpc/blob/develop/LICENSE) for the full license text.
 
 ## Releases
 
 [eRPC releases](https://github.com/EmbeddedRPC/erpc/releases)
 
 ## Documentation
 
-[Documentation](https://github.com/EmbeddedRPC/erpc/wiki) is in the `wiki` section. Commit sha in wiki repository: 431cba8.
+[Documentation](https://github.com/EmbeddedRPC/erpc/wiki) is in the `wiki` section.
+
+[eRPC Infrastructure documentation](https://embeddedrpc.github.io/)
+
+## Examples
 
 [Example IDL](examples/README.md) is available in the `examples/` folder.
 
+Plenty of eRPC multicore and multiprocessor examples can be also found in NXP MCUXpressoSDK packages. Visit [https://mcuxpresso.nxp.com](https://mcuxpresso.nxp.com) to configure, build and download these packages.<br>
+To get the board list with multicore support (eRPC included) use filtering based on Middleware and search for 'multicore' string. Once the selected package with the multicore middleware is downloaded, see<br> 
+<MCUXpressoSDK_install_dir>/boards/<board_name>/multicore_examples for eRPC multicore examples (RPMsg_Lite or Messaging Unit transports used) or<br>
+<MCUXpressoSDK_install_dir>/boards/<board_name>/multiprocessor_examples for eRPC multiprocessor examples (UART or SPI transports used).<br>
+eRPC examples use 'erpc_' name prefix. 
 
 ## Directories
 
@@ -88,12 +102,16 @@ eRPC is available with an unrestrictive BSD 3-clause license. See the LICENSE fi
 
 `erpcgen` - Holds source code for erpcgen and makefiles or project files to build erpcgen on Windows, Linux, and OS X.
 
+`erpcsniffer` - Holds source code for erpcsniffer application.
+
 `examples` - Several example IDL files.
 
 `mk` - Contains common makefiles for building eRPC components.
 
 `test` - Client/server tests. These tests verify the entire communications path from client to server and back.
 
+`utilities` - Holds utilities which bring additional benefit to eRPC apps developers.
+
 
 ## Building and installing
 
@@ -117,11 +135,11 @@ Steps are described in [`erpcgen/VisualStudio_v14/readme_erpcgen.txt`](erpcgen/V
 Install these packages:
 * bison: GNU yacc-compatible parser generator
 * flex: A fast lexical analyzer generator
-* libboost-dev, libboost-filesystem-dev, libboost-system-dev: Boost C++ libraries (Linux needs to use libboost version 1.67.0)
+* libboost-dev, libboost-filesystem-dev, libboost-system-dev: Boost C++ libraries (Linux needs to use libboost version 1.65.0)
 * make: the GNU version of the 'make' utility
 * python: Python language interpreter (either 2.7 or 3.5+ work)
-* gcc-core: GNU Compiler Collection (C, OpenMP)
-* gcc-g++: GNU Compiler Collection (C++)
+* gcc-7: GNU C compiler (recommended version)
+* g++-7: GNU C++ compiler (recommended version)
 
 Mandatory for case, when build for different architecture is needed
 * gcc-multilib, g++-multilib
@@ -130,9 +148,9 @@ Mandatory for case, when build for different architecture is needed
 #### Mac OS X
 
 Install these packages with [homebrew](http://brew.sh/):
-* bison: GNU yacc-compatible parser generator
-* flex: A fast lexical analyzer generator
-* boost: Boost C++ libraries
+* bison: GNU yacc-compatible parser generator (version 3.7.3 is recommended)
+* flex: A fast lexical analyzer generator (version 2.6.4 is recommended)
+* boost: Boost C++ libraries (version 1.74 is recommended)
 
 ### Building
 
@@ -157,6 +175,8 @@ List of top level Makefile targets:
 - `all`: build all of the above
 - `install`: install liberpc.a, erpcgen, and include files
 
+eRPC code is validated with respect to the C++ 11 standard.
+
 ### Installing for Python
 
 To install the Python infrastructure for eRPC, first change to the `erpc_python/` directory. Then run the setup.py script like this:
@@ -165,7 +185,7 @@ To install the Python infrastructure for eRPC, first change to the `erpc_python/
 
 After installation, the `erpc` package is available via normal import statements. See the [erpc_python folder readme](erpc_python/readme.md) for more.
 
-## Code providing:
+## Code providing
 
 Repository on Github contains two main branches. __Master__ and __develop__. Code is developed on __develop__ branch. Release version is created via merging __develop__ branch into __master__ branch.
 

erpc_c/config/erpc_config.h

@@ -71,13 +71,13 @@
 //! Uncomment to change the size of buffers allocated by one of MessageBufferFactory.
 //! (@ref client_setup and @ref server_setup). The default size is set to 256.
 //! For RPMsg transport layer, ERPC_DEFAULT_BUFFER_SIZE must be 2^n - 16.
-//#define ERPC_DEFAULT_BUFFER_SIZE (256)
+//#define ERPC_DEFAULT_BUFFER_SIZE (256U)
 
 //! @def ERPC_DEFAULT_BUFFERS_COUNT
 //!
 //! Uncomment to change the count of buffers allocated by one of statically allocated messages.
 //! Default value is set to 2.
-//#define ERPC_DEFAULT_BUFFERS_COUNT (2)
+//#define ERPC_DEFAULT_BUFFERS_COUNT (2U)
 
 //! @def ERPC_NOEXCEPT
 //!

erpc_c/infra/erpc_client_manager.h

@@ -200,8 +200,8 @@ class ClientManager : public ClientServerCommon
     Codec *createBufferAndCodec(void);
 
 private:
-    ClientManager(const ClientManager &);            //!< Disable copy ctor.
-    ClientManager &operator=(const ClientManager &); //!< Disable copy ctor.
+    ClientManager(const ClientManager &other);            //!< Disable copy ctor.
+    ClientManager &operator=(const ClientManager &other); //!< Disable copy ctor.
 };
 
 /*!

erpc_c/infra/erpc_client_server_common.h

@@ -79,7 +79,7 @@ class ClientServerCommon
 #define ERPC_OTHER_INHERITANCE 1
     :
 #endif
-        PrePostAction()
+        PrePostAction(void)
 #endif
             {};
 

erpc_c/infra/erpc_framed_transport.cpp

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2014-2016, Freescale Semiconductor, Inc.
- * Copyright 2016-2017 NXP
+ * Copyright 2016-2020 NXP
  * All rights reserved.
  *
  *
@@ -22,7 +22,7 @@ using namespace erpc;
 FramedTransport::FramedTransport(void)
 : Transport()
 , m_crcImpl(NULL)
-#if ERPC_THREADS
+#if !ERPC_THREADS_IS(NONE)
 , m_sendLock()
 , m_receiveLock()
 #endif
@@ -43,7 +43,7 @@ erpc_status_t FramedTransport::receive(MessageBuffer *message)
     Header h;
 
     {
-#if ERPC_THREADS
+#if !ERPC_THREADS_IS(NONE)
         Mutex::Guard lock(m_receiveLock);
 #endif
 
@@ -88,7 +88,7 @@ erpc_status_t FramedTransport::receive(MessageBuffer *message)
 erpc_status_t FramedTransport::send(MessageBuffer *message)
 {
     assert(m_crcImpl && "Uninitialized Crc16 object.");
-#if ERPC_THREADS
+#if !ERPC_THREADS_IS(NONE)
     Mutex::Guard lock(m_sendLock);
 #endif
 

erpc_c/infra/erpc_framed_transport.h

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2014-2016, Freescale Semiconductor, Inc.
- * Copyright 2016-2017 NXP
+ * Copyright 2016-2020 NXP
  * All rights reserved.
  *
  *
@@ -16,7 +16,7 @@
 
 #include <cstring>
 
-#if ERPC_THREADS
+#if !ERPC_THREADS_IS(NONE)
 #include "erpc_threading.h"
 #endif
 
@@ -111,7 +111,7 @@ class FramedTransport : public Transport
 protected:
     Crc16 *m_crcImpl; /*!< CRC object. */
 
-#if ERPC_THREADS
+#if !ERPC_THREADS_IS(NONE)
     Mutex m_sendLock;    //!< Mutex protecting send.
     Mutex m_receiveLock; //!< Mutex protecting receive.
 #endif

erpc_c/infra/erpc_pre_post_action.h

@@ -42,7 +42,7 @@ class PrePostAction
     /*!
      * @brief PrePostAction constructor.
      */
-    PrePostAction()
+    PrePostAction(void)
     : m_preCB(NULL)
     , m_postCB(NULL){};
 
@@ -67,14 +67,14 @@ class PrePostAction
      *
      * @return preCB Pointer for callback function.
      */
-    pre_post_action_cb getPreCB() { return m_preCB; }
+    pre_post_action_cb getPreCB(void) { return m_preCB; }
 
     /*!
      * @brief This function returns "after eRPC call finish" callback function.
      *
      * @return postCB Pointer for callback function.
      */
-    pre_post_action_cb getPostCB() { return m_postCB; }
+    pre_post_action_cb getPostCB(void) { return m_postCB; }
 
     /*!
      * @brief PrePostAction destructor

erpc_c/infra/erpc_server.cpp

@@ -18,6 +18,7 @@ using namespace erpc;
 ////////////////////////////////////////////////////////////////////////////////
 
 #if ERPC_NESTED_CALLS_DETECTION
+extern bool nestingDetection;
 bool nestingDetection = false;
 #endif
 

erpc_c/infra/erpc_server.h

@@ -226,8 +226,8 @@ class Server : public ClientServerCommon
 
 private:
     // Disable copy ctor.
-    Server(const Server &);            /*!< Disable copy ctor. */
-    Server &operator=(const Server &); /*!< Disable copy ctor. */
+    Server(const Server &other);            /*!< Disable copy ctor. */
+    Server &operator=(const Server &other); /*!< Disable copy ctor. */
 };
 
 } // namespace erpc

erpc_c/infra/erpc_simple_server.cpp

@@ -64,7 +64,7 @@ erpc_status_t SimpleServer::runInternalBegin(Codec **codec, MessageBuffer &buff,
     erpc_status_t err = m_transport->receive(&buff);
 
 #if ERPC_PRE_POST_ACTION
-    pre_post_action_cb preCB = this->getPreCB();
+    pre_post_action_cb preCB = this->getPreCB(void);
     if (preCB)
     {
         preCB();