https://devzone.nordicsemi.com/f/nordic-q-a/4984/st-link-nrf51822-and-openocdHello Everyone! I want to program nrf51822. I&#39;m using open OCD 0.9. I created openocd.cfg file: source [find interface/stlink-v2.cfg] transport select hla_swd set WORKAREASIZE 0x4000 source [find target/nrf51.cfg] and started openocd-x64-0en-USTelligent Community 13Sat, 03 Jan 2015 19:10:27 GMThttps://devzone.nordicsemi.com/thread/17571?ContentTypeID=1Sat, 03 Jan 2015 19:10:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:32ec0994-6201-403f-9f6f-3cc288f4d477bishop<p>I resolved this issue! I prompt this:</p> <pre><code>&gt; nrf51 mass_erase </code></pre> <p>and after it programming done well.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/17570?ContentTypeID=1Sat, 03 Jan 2015 18:41:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bea806e3-7164-4f9b-8317-bcd19e2c49dabishop<p>Thank you for answer, but this solution is not works.</p> <blockquote> <p>program blinky_gcc_xxaa.hex verify</p> </blockquote> <pre><code>target state: halted target halted due to debug-request, current mode: Thread xPSR: 0xc1000000 pc: 0x00012b98 msp: 0x20001c48 ** Programming Started ** auto erase enabled nRF51822-QFAA(build code: G0) 256kB Flash failed erasing sectors 0 to 2 ** Programming Failed ** shutdown command invoked </code></pre><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/17569?ContentTypeID=1Sat, 03 Jan 2015 18:26:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:70287c7d-274d-4dd6-8869-074074f8b265Nguyen Hoan Hoang<p>try using the &quot;program&quot; command instead.</p> <pre><code>program blinky_gcc_xxaa.hex verify </code></pre><div style="clear:both;"></div>