https://devzone.nordicsemi.com/f/nordic-q-a/41663/can-t-program-nrf51822-with-keilHi everyone, I want to program the nrf51822 module with the discovery board stm32f429i-disc1 through ST-LINK programmer in Keil IDE but this error appears: &quot;ST-LINK connection error&quot;. I erased the chip with ST-LINK Utility but in Keil, I can&#39;t.en-USTelligent Community 13Tue, 18 Dec 2018 12:42:23 GMThttps://devzone.nordicsemi.com/thread/162282?ContentTypeID=1Tue, 18 Dec 2018 12:42:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1ee82414-557d-45c2-b050-c08891830845Andreas<p>Hi,</p> <p>&nbsp;</p> <p>The debuggers we suppert are Segger J-link debuggers. ST-Link is not supported, although some features might work we can not guarantee any kind of compatibility.</p> <p>For J-Link you can use any Segger J-Link, or you can use the debug out port of the Segger OB device that sits on our nRF5x DKs. Both nRF51 DK and nRF52 DK can be used, and should cost you the same.</p> <p>&nbsp;</p> <p>Best regards,</p> <p>Andreas</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/162098?ContentTypeID=1Mon, 17 Dec 2018 13:59:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:97468d76-c357-4551-b1a6-7041c1d6bd0fawneil<p>When cross-posting (ie, posting the same question in multiple places), <em><strong>always</strong> </em>give links to you other posts!</p> <p>Otherwise, people may waste time in one thread not knowing that their contribution has already been said in another.</p> <p><a href="http://www.keil.com/forum/64105">http://www.keil.com/forum/64105</a></p><div style="clear:both;"></div>