topic Re: lwadc calibration procedure in MQX Software Solutions https://community.nxp.com/t5/MQX-Software-Solutions/lwadc-calibration-procedure/m-p/646277#M17132 <HTML><HEAD></HEAD><BODY><P>Hi Goncalo:</P><P></P><P>Current BSP not support calibration, please check the init_lwadc.c file. The calibration data pointer is Null.</P><P></P><P><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_2.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/12898i32780A384D780A65/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_2.png" alt="pastedImage_2.png" /></span></P><P></P><P></P><P>Regards</P><P>Daniel</P></BODY></HTML> Tue, 06 Dec 2016 14:08:16 GMT danielchen 2016-12-06T14:08:16Z lwadc calibration procedure https://community.nxp.com/t5/MQX-Software-Solutions/lwadc-calibration-procedure/m-p/646276#M17131 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P>I am trying to use the lwadc api provided with MQX 4.2.0 to read some analog inputs&nbsp;on the Freescale K60, but the documentation is a bit scarce and I have some doubts regarding the calibration function. I am basing myself on the sample code to read the potentiometer provided with mqx.</P><P>-<A _jive_internal="true" href="https://community.nxp.com/message/411805?q=lwadc_cal">Here</A> is recommended to run the calibration procedure using ioctl, but the lwadc does not use file handles. So where should I get this file handler to each adc channel? Can't I just read/write the register (in this case bit CAL on ADCx_SC3) myself?</P><P>-Why does the sample aplication have no calibration procedure? Isn't is allways needed?</P><P>-When should I do the calibration? After _lwadc_init() and before _lwadc_init_input()?</P><P></P><P>Thanks in advance.</P><P>Goncalo</P></BODY></HTML> Mon, 05 Dec 2016 13:04:08 GMT https://community.nxp.com/t5/MQX-Software-Solutions/lwadc-calibration-procedure/m-p/646276#M17131 goncaloandre 2016-12-05T13:04:08Z Re: lwadc calibration procedure https://community.nxp.com/t5/MQX-Software-Solutions/lwadc-calibration-procedure/m-p/646277#M17132 <HTML><HEAD></HEAD><BODY><P>Hi Goncalo:</P><P></P><P>Current BSP not support calibration, please check the init_lwadc.c file. The calibration data pointer is Null.</P><P></P><P><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_2.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/12898i32780A384D780A65/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_2.png" alt="pastedImage_2.png" /></span></P><P></P><P></P><P>Regards</P><P>Daniel</P></BODY></HTML> Tue, 06 Dec 2016 14:08:16 GMT https://community.nxp.com/t5/MQX-Software-Solutions/lwadc-calibration-procedure/m-p/646277#M17132 danielchen 2016-12-06T14:08:16Z