<p>I applied the same changes as in <a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="414521222" data-permission-text="Issue title is private" data-url="https://github.com/RIOT-OS/RIOT/issues/11066" data-hovercard-type="pull_request" data-hovercard-url="/RIOT-OS/RIOT/pull/11066/hovercard" href="https://github.com/RIOT-OS/RIOT/pull/11066">#11066</a> for <code>stm32f3discovery</code> and <code>periph_rtc</code> test succeeds and <code>examples/default</code> does not crash.</p>
<pre><code>diff --git a/boards/stm32f3discovery/include/periph_conf.h b/boards/stm32f3discovery/include/periph_conf.h
index 79bd8cad5..bf7105bac 100644
--- a/boards/stm32f3discovery/include/periph_conf.h
+++ b/boards/stm32f3discovery/include/periph_conf.h
@@ -40,7 +40,7 @@ extern "C" {
 #define CLOCK_HSE           (8000000U)
 /* 0: no external low speed crystal available,
  * 1: external crystal available (always 32.768kHz) */
-#define CLOCK_LSE           (1)
+#define CLOCK_LSE           (0)
 /* peripheral clock setup */
 #define CLOCK_AHB_DIV       RCC_CFGR_HPRE_DIV1
 #define CLOCK_AHB           (CLOCK_CORECLOCK / 1)
</code></pre>
<p>Does anyone who can justify this change do a pull request ? I can only say it make the thing work but not justify with hardware arguments.</p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">—<br />You are receiving this because you are subscribed to this thread.<br />Reply to this email directly, <a href="https://github.com/RIOT-OS/RIOT/issues/11029#issuecomment-467454950">view it on GitHub</a>, or <a href="https://github.com/notifications/unsubscribe-auth/AEn7YK17A7CsSZwAYu3FVMOhS3GHyDXOks5vRUIKgaJpZM4bAVBJ">mute the thread</a>.<img src="https://github.com/notifications/beacon/AEn7YIFCQVgaY7cIeDus4uubyDUXdPWxks5vRUIKgaJpZM4bAVBJ.gif" height="1" width="1" alt="" /></p>
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