https://devzone.nordicsemi.com/f/nordic-q-a/27483/nrf24le1---toggle-problemHi, we have developed a board that is using the nRF24LE1 chip. For test purposes I do want to toggle every possible pin. My first step is to develop this simple test code on my development board. But I have noticed some strange behaviour. I am usingen-USTelligent Community 13Wed, 22 Nov 2017 14:42:37 GMThttps://devzone.nordicsemi.com/thread/108551?ContentTypeID=1Wed, 22 Nov 2017 14:42:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0dbefb9a-6d49-4e45-8eb9-e2900290400covrebekk<p>I am glad to hear that did the trick :)</p> <p>If you haven&#39;t already you should read through the nRF24L series development <a href="https://www.nordicsemi.com/eng/nordic/download_resource/10885/7/50051949/1515">appnote</a>.</p> <p>Best regards</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/108550?ContentTypeID=1Wed, 22 Nov 2017 12:33:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:14b3e568-dcba-4e83-87cf-e5c50bdf9eaaKai<p>Thank you! It&#39;s the debugging bit.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/108549?ContentTypeID=1Wed, 22 Nov 2017 12:21:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3916635a-d71c-416e-8cff-d1df5563d25bovrebekk<p>Hi Kai</p> <p>Most likely you have the debug bit set.</p> <p>You lose 4 or 5 pins when debug mode is enabled, since the JTAG interface is multiplexed with the GPIO. If you refer to table 76 on page 137 of the <a href="https://www.nordicsemi.com/eng/content/download/2443/29442/file/nRF24LE1_Product_Specification_rev1_6.pdf">nRF24LE1 Product Specification</a> you will see that this affects P0.7, P1.0, P1.1, P1.2 and P1.3.</p> <p>Also, P1 only has 7 pins on the 32-pin nRF24LE1 variant.</p> <p>Clear the debug bit and flash the application again, and you should see all the pins working.</p> <p>Best regards<br /> Torbjørn</p><div style="clear:both;"></div>