<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[RTC unit and core1]]></title><description><![CDATA[<p dir="auto">I am trying to make my new RTC unit RTC8563 to work with my core1 , but arduino IDE always get me a problem message due to the unit RTC .<br />
Would anybody be able to guide me through some help?<br />
I am slimpkly tring to compile the example code given by M5stack:<br />
Unit_RTC_M5Series.ino</p>
<p dir="auto">/Users/bboxx/Documents/Arduino/libraries/M5Unit-RTC/src/Unit_RTC.cpp: In member function 'void Unit_RTC::begin(TwoWire*, uint8_t, uint8_t, uint32_t)':<br />
/Users/bbox/Documents/Arduino/libraries/M5Unit-RTC/src/Unit_RTC.cpp:33:49: error: no matching function for call to 'TwoWire::begin(int, uint8_t&amp;, uint8_t&amp;, uint32_t&amp;)'<br />
_wire-&gt;begin(DEVICE_ADDR, sda, scl, i2c_freq);<br />
^<br />
In file included from /Users/bbox/Documents/Arduino/libraries/M5Unit-RTC/src/Unit_RTC.h:12,<br />
from /Users/bbox/Documents/Arduino/libraries/M5Unit-RTC/src/Unit_RTC.cpp:1:<br />
/Users/bbox/Library/Arduino15/packages/m5stack/hardware/esp32/2.0.0/libraries/Wire/src/Wire.h:76:10: note: candidate: 'bool TwoWire::begin(int, int, uint32_t)'<br />
bool begin(int sda=-1, int scl=-1, uint32_t frequency=0); // returns true, if successful init of i2c bus<br />
^~~~~<br />
/Users/bbox/Library/Arduino15/packages/m5stack/hardware/esp32/2.0.0/libraries/Wire/src/Wire.h:76:10: note:   candidate expects 3 arguments, 4 provided<br />
Multiple libraries were found for "SD.h"<br />
Used: /Users/bbox/Library/Arduino15/packages/m5stack/hardware/esp32/2.0.0/libraries/SD<br />
Not used: /Users/bbox/Library/Arduino15/libraries/SD<br />
exit status 1</p>
<p dir="auto">Compilation error: exit status 1</p>
]]></description><link>https://community.m5stack.com/topic/5263/rtc-unit-and-core1</link><generator>RSS for Node</generator><lastBuildDate>Sun, 19 Apr 2026 06:19:01 GMT</lastBuildDate><atom:link href="https://community.m5stack.com/topic/5263.rss" rel="self" type="application/rss+xml"/><pubDate>Mon, 01 May 2023 20:43:07 GMT</pubDate><ttl>60</ttl><item><title><![CDATA[Reply to RTC unit and core1 on Tue, 02 May 2023 19:07:10 GMT]]></title><description><![CDATA[<p dir="auto">Hello <a class="mention plugin-mentions-user plugin-mentions-a" href="https://community.m5stack.com/uid/15008">@breadbox</a></p>
<p dir="auto">no worries. You're welcome. Glad it works for you now.</p>
<p dir="auto">Thanks<br />
Felix</p>
]]></description><link>https://community.m5stack.com/post/20740</link><guid isPermaLink="true">https://community.m5stack.com/post/20740</guid><dc:creator><![CDATA[felmue]]></dc:creator><pubDate>Tue, 02 May 2023 19:07:10 GMT</pubDate></item><item><title><![CDATA[Reply to RTC unit and core1 on Tue, 02 May 2023 15:22:52 GMT]]></title><description><![CDATA[<p dir="auto"><a class="mention plugin-mentions-user plugin-mentions-a" href="https://community.m5stack.com/uid/4037">@felmue</a><br />
Waow, that was it.<br />
Would have never guessed something that crazy.<br />
Thank you so much</p>
]]></description><link>https://community.m5stack.com/post/20738</link><guid isPermaLink="true">https://community.m5stack.com/post/20738</guid><dc:creator><![CDATA[breadbox]]></dc:creator><pubDate>Tue, 02 May 2023 15:22:52 GMT</pubDate></item><item><title><![CDATA[Reply to RTC unit and core1 on Mon, 01 May 2023 22:10:57 GMT]]></title><description><![CDATA[<p dir="auto">Hello <a class="mention plugin-mentions-user plugin-mentions-a" href="https://community.m5stack.com/uid/15008">@breadbox</a></p>
<p dir="auto">you most likely need to update the <em>framework-arduinoespressif32</em> library. When I try to compile with version 1.0.6 I get the same error as you. However if I compile with the latest version 2.0.7 the compilation runs through fine.</p>
<p dir="auto">Thanks<br />
Felix</p>
]]></description><link>https://community.m5stack.com/post/20728</link><guid isPermaLink="true">https://community.m5stack.com/post/20728</guid><dc:creator><![CDATA[felmue]]></dc:creator><pubDate>Mon, 01 May 2023 22:10:57 GMT</pubDate></item></channel></rss>