https://devzone.nordicsemi.com/f/nordic-q-a/67228/i-d-like-to-know-how-to-check-if-the-battery-is-chargingHello, I use the TP4056 charging module and the 3.7V lithium battery (300mAh) and work on sdk v17. One of the features I&#39;m trying to create is when the charging connector is connected to the battery (that is, when charging), to stop the previous functionen-USTelligent Community 13Fri, 16 Oct 2020 08:48:36 GMThttps://devzone.nordicsemi.com/thread/275287?ContentTypeID=1Fri, 16 Oct 2020 08:48:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:63f55951-c4be-4dd7-bfb3-d4ddf4418d36ketiljo<p>Correct!</p> <p>Note that you need a pullup resistor as well, but you can use the on-chip resistor in the GPIO.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/275235?ContentTypeID=1Fri, 16 Oct 2020 02:40:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c5d0d0c5-b567-4e3e-ad97-4a07bcb0f523schosdas<p>Hello, ketiljo!</p> <p></p> <p>According to the data sheet, pin 7 of TP4056 becomes PULL DOWN when charging.</p> <p>To read the signal from this pin, do I connect pin 7 of TP4056 to the GPIO pin of the CPU when designing the PCB?</p> <p></p> <p>Thank you.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/275007?ContentTypeID=1Thu, 15 Oct 2020 08:42:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:be955ed3-4c33-41c1-84ba-22c03ea61843schosdas<div class="edit_box___1KtZ3 active___3VPGL" id="txtTarget"><span>Thank you. I&#39;ll check.</span></div><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/275004?ContentTypeID=1Thu, 15 Oct 2020 08:39:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:259b20cc-88d7-4df4-af4b-1774b0db7d05ketiljo<p>According to the datasheet of the TP4056, there&#39;s a pin that goes low when the battery is being charged. Connect this to a GPIO with a pullup.</p><div style="clear:both;"></div>