my02f_easy_m4_rpc_print.ino

/*
 * my02f_easy_m4_rpc_print.ino for the Portenta H7
 *
 * The PortentaH7 M4 core can not print to the serial monitor
 * On the M4 core if you do a Serial.Println it goes to the TX RX UART output pins
 * This program uses RPC to redirect Serial.println to the M7 core 
 * so that regular sketches still work with serial monitor output from the M4 core
 *
 * Note: The M4 core will not compile unless -fexceptions is added 
 * to the bottom of the files: 
 * cflags.txt
 * cxxflags.txt 
 * at
 * C:\Users\<USER>\AppData\Local\Arduino15\packages\arduino-beta\hardware\mbed\1.2.2\variants\PORTENTA_H7_M4
 *
 * Note: AppData is hidden so find it directly
 * 
 * updated August 2nd, 2020
 * by Jeremy Ellis
 * Twitter @rocksetta
 * Website https://www.rocksetta.com
 *
 *I have re-written this to make larger programs easier
 *by seperating the M7 and M4 code completely.
 *
*/



#ifdef CORE_CM7   // Start M7 programming
 
#include "RPC_internal.h"  // comes with the mbed board installation

void setup() {
   bootM4(); 
   Serial.begin(115200);
   RPC1.begin();
}

void loop() {
  
   Serial.println("Hello from M7 regular Serial");
   while (RPC1.available()) {
      Serial.write(RPC1.read()); 
   }  
   delay(3000);
}

#endif              // End all M7 core programming

/////////////////////////////////////////////////////////////////////////////////////////////

#ifdef CORE_CM4    // Start M4 programming

#include "RPC_internal.h"  // comes with the mbed board installation

#define Serial RPC1  // So the M4 regular serial prints to RPC

  
void setup() {
   Serial.begin();   // RPC begin does not take an integer
}

void loop() {
  Serial.println("Hello from M4 using regular serial piped through RPC"); 
  
  delay(5000);
}

#endif            // End all M4 core programming