Add openamp+RPC without hurting nRF board

Author: facchinm

boards.txt

@@ -49,7 +49,7 @@ envie_m4.compiler.mbed.cflags={build.variant.path}/cflags.txt
 envie_m4.compiler.mbed.cxxflags={build.variant.path}/cxxflags.txt
 envie_m4.compiler.mbed.includes={build.variant.path}/includes.txt
 envie_m4.compiler.mbed.extra_ldflags=-lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
-envie_m4.compiler.mbed="{build.variant.path}/libs/libmbed.a"
+envie_m4.compiler.mbed="{build.variant.path}/libs/libmbed.a" "{build.variant.path}/libs/libopenamp.a"
 envie_m4.vid.0=0x0483
 envie_m4.pid.0=0x374e
 

cores/arduino/RPC.cpp

@@ -1,3 +1,5 @@
+#ifdef TARGET_STM32H747_CM4
+
 #include "RPC.h"
 
 int RPC::rpmsg_recv_service_callback(struct rpmsg_endpoint *ept, void *data,
@@ -79,3 +81,5 @@ int RPC::request(service_request* s) {
 }
 
 arduino::RPC RPC1;
+
+#endif

cores/arduino/RPC.h

@@ -1,4 +1,5 @@
 #ifdef __cplusplus
+#ifdef TARGET_STM32H747_CM4
 
 #ifndef __ARDUINO_RPC_IMPLEMENTATION__
 #define __ARDUINO_RPC_IMPLEMENTATION__
@@ -65,5 +66,6 @@ class RPC : public Stream {
 
 extern arduino::RPC RPC1;
 
+#endif
 #endif
 #endif

cores/arduino/openamp/openamp/open_amp.h

@@ -8,10 +8,10 @@
 #ifndef OPEN_AMP_H_
 #define OPEN_AMP_H_
 
-#include <openamp/rpmsg.h>
-#include <openamp/rpmsg_virtio.h>
-#include <openamp/remoteproc.h>
-#include <openamp/remoteproc_virtio.h>
+#include "rpmsg.h"
+#include "rpmsg_virtio.h"
+#include "remoteproc.h"
+#include "remoteproc_virtio.h"
 
 
 #endif				/* OPEN_AMP_H_ */

cores/arduino/openamp/openamp/rpmsg.h

@@ -12,7 +12,7 @@
 #ifndef _RPMSG_H_
 #define _RPMSG_H_
 
-#include <openamp/compiler.h>
+#include "compiler.h"
 #include <metal/mutex.h>
 #include <metal/list.h>
 #include <string.h>

cores/arduino/openamp/.mbedignore renamed to libraries/openamp/.mbedignore

@@ -0,0 +1,19 @@
+// Use this file to produce an archive in {build_dir}/libraries/openamp/openamp.a, then move it to variants/ENVIE_M4/libs/libopenamp.a
+
+#include "arduino_openamp.h"
+#include "RPC.h"
+
+void setup() {
+  RPC1.begin();
+  Serial.begin(115200);
+}
+
+void loop() {
+  if (RPC1.available() > 10) {
+    Serial.print("I have new stuff ");
+    Serial.println(RPC1.available());
+    while (RPC1.available()) {
+      Serial.write(RPC1.read());
+    }
+  }
+}

libraries/openamp/examples/Create_openamp_library/Create_openamp_library.ino

@@ -0,0 +1,10 @@
+name=openamp
+version=1.0
+author=Arduino
+maintainer=Arduino <info@arduino.cc>
+sentence=Enables the communication between H747 cores via shared memory and openAMP library.
+paragraph=
+category=Communication
+url=
+architectures=mbed
+dot_a_linkage=true