split RTC RPC example

Author: Hannes7eicher

content/hardware/10.mega/boards/giga-r1-wifi/tutorials/giga-dual-core/giga-dual-core.md

@@ -562,130 +562,84 @@ int servoMove(int angle) {
 
 This example demonstrates how the RTC can be accessed from the M4:
 
-Each example is written as a **single sketch** intended to be uploaded to **both cores**.
-
 **M4 sketch:**
 ```arduino
+/**
+* Initial author: Henatu (https://forum.arduino.cc/u/henatu/summary)
+* modified 03 December 2024
+* by Hannes Siebeneicher
+*/
+
 #include "mbed.h"
 #include <mbed_mktime.h>
 #include "RPC.h"
 
-constexpr unsigned long printInterval { 1000 };
-unsigned long printNow {};
+constexpr unsigned long printInterval{ 1000 };
+unsigned long printNow{};
 
 void setup() {
-    RPC.begin();
-    if (RPC.cpu_id() == CM7_CPUID) {
-      Serial.begin(19200);
-      while (!Serial) {
-        ; // Wait for Serial (USB) connection
-      }
-      Serial.println("M7: Serial connection initiated");
-    } else {
-      //RTCset()  //Uncomment if you need to set the RTC for the first time.
-      RPC.println("M4: Reading the RTC.");
-    }
+  if (RPC.begin()) {
+    RPC.println("M4: Reading the RTC.");
+    //RTCset()  //Uncomment if you need to set the RTC for the first time.
+  }
 }
 
 void loop() {
-    if (RPC.cpu_id() == CM7_CPUID) {
-      if (RPC.available()) {
-        char incomingByte = RPC.read();  // Read byte from RPC
-        Serial.write(incomingByte);  // Forward the byte to Serial (USB)
-      }
-    }
-    else
-    {
-        if (millis() > printNow) {
-        RPC.print("M4 System Clock: ");
-        RPC.println(getLocaltime());
-        printNow = millis() + printInterval;
-      } 
-    }
+  if (millis() > printNow) {
+    RPC.print("M4 System Clock: ");
+    RPC.println(getLocaltime());
+    printNow = millis() + printInterval;
+  }
 }
 
-String getLocaltime()
-{
-    char buffer[32];
-    tm t;
-    _rtc_localtime(time(NULL), &t, RTC_4_YEAR_LEAP_YEAR_SUPPORT);
-    strftime(buffer, 32, "%Y-%m-%d %k:%M:%S", &t);
-    return String(buffer);
+String getLocaltime() {
+  char buffer[32];
+  tm t;
+  _rtc_localtime(time(NULL), &t, RTC_4_YEAR_LEAP_YEAR_SUPPORT);
+  strftime(buffer, 32, "%Y-%m-%d %k:%M:%S", &t);
+  return String(buffer);
 }
 
 void RTCset()  // Set cpu RTC
-{    
+{
   tm t;
-            t.tm_sec = (0);       // 0-59
-            t.tm_min = (58);        // 0-59
-            t.tm_hour = (11);         // 0-23
-            t.tm_mday = (1);   // 1-31
-            t.tm_mon = (9);       // 0-11  "0" = Jan, -1 
-            t.tm_year = ((24)+100);   // year since 1900,  current year + 100 + 1900 = correct year
-            set_time(mktime(&t));       // set RTC clock                                 
+  t.tm_sec = (0);            // 0-59
+  t.tm_min = (58);           // 0-59
+  t.tm_hour = (11);          // 0-23
+  t.tm_mday = (1);           // 1-31
+  t.tm_mon = (9);            // 0-11  "0" = Jan, -1
+  t.tm_year = ((24) + 100);  // year since 1900,  current year + 100 + 1900 = correct year
+  set_time(mktime(&t));      // set RTC clock
 }
 ```
 
 **M7 sketch:**
 ```arduino
+/**
+* Initial author: Henatu (https://forum.arduino.cc/u/henatu/summary)
+* modified 03 December 2024
+* by Hannes Siebeneicher
+*/
+
 #include "mbed.h"
-#include <mbed_mktime.h>
 #include "RPC.h"
 
-constexpr unsigned long printInterval { 1000 };
-unsigned long printNow {};
-
 void setup() {
-    RPC.begin();
-    if (RPC.cpu_id() == CM7_CPUID) {
-      Serial.begin(19200);
-      while (!Serial) {
-        ; // Wait for Serial (USB) connection
-      }
-      Serial.println("M7: Serial connection initiated");
-    } else {
-      //RTCset()  //Uncomment if you need to set the RTC for the first time.
-      RPC.println("M4: Reading the RTC.");
-    }
+  RPC.begin();
+  Serial.begin(9600);
+  while (!Serial) {
+    ;  // Wait for Serial (USB) connection
+  }
+  Serial.println("M7: Serial connection initiated");
 }
 
 void loop() {
-    if (RPC.cpu_id() == CM7_CPUID) {
-      if (RPC.available()) {
-        char incomingByte = RPC.read();  // Read byte from RPC
-        Serial.write(incomingByte);  // Forward the byte to Serial (USB)
-      }
-    }
-    else
-    {
-        if (millis() > printNow) {
-        RPC.print("M4 System Clock: ");
-        RPC.println(getLocaltime());
-        printNow = millis() + printInterval;
-      } 
-    }
-}
-
-String getLocaltime()
-{
-    char buffer[32];
-    tm t;
-    _rtc_localtime(time(NULL), &t, RTC_4_YEAR_LEAP_YEAR_SUPPORT);
-    strftime(buffer, 32, "%Y-%m-%d %k:%M:%S", &t);
-    return String(buffer);
+  if (RPC.available()) {
+    char incomingByte = RPC.read();  // Read byte from RPC
+    Serial.write(incomingByte);      // Forward the byte to Serial (USB)
+  }
 }
 
-void RTCset()  // Set cpu RTC
-{    
-  tm t;
-            t.tm_sec = (0);       // 0-59
-            t.tm_min = (58);        // 0-59
-            t.tm_hour = (11);         // 0-23
-            t.tm_mday = (1);   // 1-31
-            t.tm_mon = (9);       // 0-11  "0" = Jan, -1 
-            t.tm_year = ((24)+100);   // year since 1900,  current year + 100 + 1900 = correct year
-            set_time(mktime(&t));       // set RTC clock                                 
-}
 ```
 
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