https://devzone.nordicsemi.com/f/nordic-q-a/116732/ant-no-reply-from-the-calibration-serviceHello, After consulting the manual and understanding the composition of the calibration data page, the ant_bpwr_calib_handler was added, but the callback function was not entered in the actual operation. However, ANT+ bike power data can be sent normallyen-USTelligent Community 13Tue, 26 Nov 2024 13:11:17 GMThttps://devzone.nordicsemi.com/thread/512119?ContentTypeID=1Tue, 26 Nov 2024 13:11:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:854fe92b-8fe5-46f2-8cf0-faf02b0cda18Kenneth<p>Hello,</p> <p>Looking at description for the example it seems this should work out of the box:<br /><a href="https://docs.nordicsemi.com/bundle/sdk_nrf5_v17.1.0/page/ant_examples_bpwr.html">https://docs.nordicsemi.com/bundle/sdk_nrf5_v17.1.0/page/ant_examples_bpwr.html</a>&nbsp;</p> <p>Are you doing it as show in:&nbsp;\nRF5_SDK_17.1.0_ddde560\examples\ant\ant_plus\ant_bpwr\bpwr_tx\main.c</p> <p>Kenneth</p><div style="clear:both;"></div>