https://devzone.nordicsemi.com/f/nordic-q-a/41512/examples-of-i2s-used-on-softdeviceI use sdk15.2 and nrf52832. I copy i2s examples to nRF5_SDK_15.2.0_9412b96\examples\ble_peripheral\ ble_app_hrs ,and nRF5_SDK_15.2.0_9412b96\examples\ble_peripheral\ ble_app_hrs_freertos .But ble_app_freeeros &#39;s output is not good. I have to use freeRTOSen-USTelligent Community 13Wed, 12 Dec 2018 09:52:31 GMThttps://devzone.nordicsemi.com/thread/161384?ContentTypeID=1Wed, 12 Dec 2018 09:52:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ecc64eeb-e357-48d3-a530-1ba5363399a6john.liu<p><span style="text-decoration:underline;"><span style="background-color:transparent;color:#11171a;float:none;font-family:&#39;GT Eesti&#39;,&#39;Helvetica&#39;,Arial,sans-serif;font-size:14px;font-style:normal;font-weight:400;letter-spacing:normal;line-height:21px;text-align:left;text-decoration:underline;text-indent:0px;text-transform:none;white-space:normal;">What testing / investigation / debugging have </span><em style="background-color:transparent;color:#11171a;font-style:italic;font-weight:400;letter-spacing:normal;text-align:left;text-decoration:underline;text-indent:0px;text-transform:none;white-space:normal;"><strong style="font-weight:bold;">you</strong></em><span style="background-color:transparent;color:#11171a;float:none;font-family:&#39;GT Eesti&#39;,&#39;Helvetica&#39;,Arial,sans-serif;font-size:14px;font-style:normal;font-weight:400;letter-spacing:normal;line-height:21px;text-align:left;text-decoration:underline;text-indent:0px;text-transform:none;white-space:normal;"> done to find the cause of the problem?</span></span></p> <p>Testing</p> <p>1,I copy&nbsp;<a href="https://github.com/andenore/NordicSnippets/tree/master/examples/i2s_master">i2s</a> to the example without&nbsp; softdevice, and I2S output was good.</p> <p>2,I copy&nbsp;<a href="https://github.com/andenore/NordicSnippets/tree/master/examples/i2s_master">i2s</a> to the&nbsp;<span style="background-color:transparent;color:#ff0000;font-style:normal;font-weight:400;letter-spacing:normal;text-align:left;text-decoration:none;text-indent:0px;text-transform:none;white-space:normal;">ble_app_hrs<span style="color:#b00000;">,<span style="background-color:transparent;color:#000000;float:none;font-family:Verdana,Arial,Helvetica,sans-serif;font-size:12px;font-style:normal;font-weight:400;letter-spacing:normal;text-align:left;text-decoration:none;text-indent:0px;text-transform:none;white-space:normal;">and I2S output was good</span>.</span></span></p> <p><span style="color:#b01100;">3.I copy&nbsp;<a href="https://github.com/andenore/NordicSnippets/tree/master/examples/i2s_master">i2s</a> to the&nbsp;<span style="background-color:transparent;color:#ff0000;float:none;font-family:&#39;GT Eesti&#39;,&#39;Helvetica&#39;,Arial,sans-serif;font-size:14px;font-style:normal;font-weight:400;letter-spacing:normal;text-align:left;text-decoration:none;text-indent:0px;text-transform:none;white-space:normal;">ble_app_hrs_freertos</span>,I2s output is not good.&nbsp;</span><span style="color:#b01100;"></span></p> <p><span style="font-size:medium;text-decoration:underline;"><i><span style="color:#007000;font-family:&#39;GT Eesti&#39;,&#39;Helvetica&#39;,Arial,sans-serif;text-decoration:underline;"><span style="background-color:transparent;color:#11171a;float:none;font-family:&#39;GT Eesti&#39;,&#39;Helvetica&#39;,Arial,sans-serif;font-style:normal;font-weight:400;letter-spacing:normal;line-height:21px;text-align:left;text-decoration:underline;text-indent:0px;text-transform:none;white-space:normal;">Why do you </span><em style="background-color:transparent;color:#11171a;font-style:italic;font-weight:400;letter-spacing:normal;text-align:left;text-decoration:underline;text-indent:0px;text-transform:none;white-space:normal;"><strong style="font-weight:bold;">have</strong></em><span style="background-color:transparent;color:#11171a;float:none;font-family:&#39;GT Eesti&#39;,&#39;Helvetica&#39;,Arial,sans-serif;font-style:normal;font-weight:400;letter-spacing:normal;line-height:21px;text-align:left;text-decoration:underline;text-indent:0px;text-transform:none;white-space:normal;"> to ?</span></span></i></span></p> <p><span style="color:#007600;"></span><span style="color:#b01100;"></span>Because the company specifies freeRTOS.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/161370?ContentTypeID=1Wed, 12 Dec 2018 09:16:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:89b7216a-e6b9-4936-b6e7-52b50344c02dawneil[quote userid="73478" url="~/f/nordic-q-a/41512/examples-of-i2s-used-on-softdevice"]output is not good.[/quote] <p>In what way(s), exactly, is it &quot;not good&quot; ?</p> <p>What testing / investigation / debugging have <em><strong>you</strong></em> done to find the cause of the problem?</p> [quote userid="73478" url="~/f/nordic-q-a/41512/examples-of-i2s-used-on-softdevice"]I have to use freeRTOS[/quote] <p>Why do you <em><strong>have</strong></em> to ?</p> <p>Many (most?) nRF52 applications work perfectly fine with <em><strong>no</strong> </em>RTOS at all ...</p> <p></p> [quote userid="73478" url="~/f/nordic-q-a/41512/examples-of-i2s-used-on-softdevice"]What should I do?[/quote] <p><a href="https://www.avrfreaks.net/comment/2418156#comment-2418156">https://www.avrfreaks.net/comment/2418156#comment-2418156</a></p><div style="clear:both;"></div>