From 56d7eded4db8d2ec4784b6f1083a0a563106c808 Mon Sep 17 00:00:00 2001
From: pennam <m.pennasilico@arduino.cc>
Date: Mon, 15 May 2023 10:16:52 +0200
Subject: [PATCH] pico w: Add soft RTC support

---
 src/utility/time/RTCMillis.cpp   |  4 ++--
 src/utility/time/RTCMillis.h     |  4 ++--
 src/utility/time/TimeService.cpp | 31 ++++++++++++++++++++++++++++---
 3 files changed, 32 insertions(+), 7 deletions(-)

diff --git a/src/utility/time/RTCMillis.cpp b/src/utility/time/RTCMillis.cpp
index 419236d1..91741678 100644
--- a/src/utility/time/RTCMillis.cpp
+++ b/src/utility/time/RTCMillis.cpp
@@ -15,7 +15,7 @@
    a commercial license, send an email to license@arduino.cc.
 */
 
-#ifdef ARDUINO_ARCH_ESP8266
+#if defined (ARDUINO_ARCH_ESP8266) || defined (ARDUINO_RASPBERRY_PI_PICO_W)
 
 /**************************************************************************************
  * INCLUDE
@@ -59,4 +59,4 @@ unsigned long RTCMillis::get()
   return _last_rtc_update_value;
 }
 
-#endif /* ARDUINO_ARCH_ESP8266 */
+#endif /* ARDUINO_ARCH_ESP8266 || ARDUINO_RASPBERRY_PI_PICO_W */
diff --git a/src/utility/time/RTCMillis.h b/src/utility/time/RTCMillis.h
index 1fa7e0f4..fce881fd 100644
--- a/src/utility/time/RTCMillis.h
+++ b/src/utility/time/RTCMillis.h
@@ -18,7 +18,7 @@
 #ifndef ARDUINO_IOT_CLOUD_RTC_MILLIS_H_
 #define ARDUINO_IOT_CLOUD_RTC_MILLIS_H_
 
-#ifdef ARDUINO_ARCH_ESP8266
+#if defined (ARDUINO_ARCH_ESP8266) || defined (ARDUINO_RASPBERRY_PI_PICO_W)
 
 /**************************************************************************************
  * INCLUDE
@@ -45,6 +45,6 @@ class RTCMillis
 
 };
 
-#endif /* ARDUINO_ARCH_ESP8266 */
+#endif /* ARDUINO_ARCH_ESP8266 || ARDUINO_RASPBERRY_PI_PICO_W */
 
 #endif /* ARDUINO_IOT_CLOUD_RTC_MILLIS_H_ */
diff --git a/src/utility/time/TimeService.cpp b/src/utility/time/TimeService.cpp
index b0362cf8..82f3a693 100644
--- a/src/utility/time/TimeService.cpp
+++ b/src/utility/time/TimeService.cpp
@@ -34,7 +34,7 @@
   #include <mbed_rtc_time.h>
 #endif
 
-#ifdef ARDUINO_ARCH_ESP8266
+#if defined (ARDUINO_ARCH_ESP8266) || defined (ARDUINO_RASPBERRY_PI_PICO_W)
   #include "RTCMillis.h"
 #endif
 
@@ -50,7 +50,7 @@
 RTCZero rtc;
 #endif
 
-#ifdef ARDUINO_ARCH_ESP8266
+#if defined (ARDUINO_ARCH_ESP8266) || defined (ARDUINO_RASPBERRY_PI_PICO_W)
 RTCMillis rtc;
 #endif
 
@@ -90,6 +90,12 @@ void renesas_setRTC(unsigned long time);
 unsigned long renesas_getRTC();
 #endif
 
+#ifdef ARDUINO_RASPBERRY_PI_PICO_W
+void pico_w_initRTC();
+void pico_w_setRTC(unsigned long time);
+unsigned long pico_w_getRTC();
+#endif
+
 /**************************************************************************************
  * DEFINES
  **************************************************************************************/
@@ -342,6 +348,7 @@ void TimeServiceClass::initRTC()
 #elif defined (ARDUINO_ARCH_RENESAS)
   renesas_initRTC();
 #elif defined (ARDUINO_RASPBERRY_PI_PICO_W)
+  pico_w_initRTC();
 #else
   #error "RTC not available for this architecture"
 #endif
@@ -360,6 +367,7 @@ void TimeServiceClass::setRTC(unsigned long time)
 #elif defined (ARDUINO_ARCH_RENESAS)
   renesas_setRTC(time);
 #elif defined (ARDUINO_RASPBERRY_PI_PICO_W)
+  pico_w_setRTC(time);
 #else
   #error "RTC not available for this architecture"
 #endif
@@ -378,7 +386,7 @@ unsigned long TimeServiceClass::getRTC()
 #elif defined (ARDUINO_ARCH_RENESAS)
   return renesas_getRTC();
 #elif defined (ARDUINO_RASPBERRY_PI_PICO_W)
-  return 1;
+  return pico_w_getRTC();
 #else
   #error "RTC not available for this architecture"
 #endif
@@ -513,6 +521,23 @@ unsigned long renesas_getRTC()
 }
 #endif
 
+#ifdef ARDUINO_RASPBERRY_PI_PICO_W
+void pico_w_initRTC()
+{
+  rtc.begin();
+}
+
+void pico_w_setRTC(unsigned long time)
+{
+  rtc.set(time);
+}
+
+unsigned long pico_w_getRTC()
+{
+  return rtc.get();
+}
+#endif
+
 /******************************************************************************
  * EXTERN DEFINITION
  ******************************************************************************/