S32KのトピックAD detection is not allowed https://community.nxp.com/t5/S32K/AD-detection-is-not-allowed/m-p/942852#M5091 <HTML><HEAD></HEAD><BODY><P>The accuracy of the ADC is not accurate. I used the ADC0 channel 13 (PTC15) to detect the voltage. But I found that the 3.3V is the ADC value is 1023, (ten-bit resolution), but I detected 2.5V is the ADC value of 808, already The 0.1V is worse. What's even more strange is that the ADC value I detected for 0.5V is 78. This variation is already very large. Can help me check if my location problem or other problem, I will attach my code configuration</P></BODY></HTML> Fri, 02 Aug 2019 02:06:47 GMT ywjack 2019-08-02T02:06:47Z AD detection is not allowed https://community.nxp.com/t5/S32K/AD-detection-is-not-allowed/m-p/942852#M5091 <HTML><HEAD></HEAD><BODY><P>The accuracy of the ADC is not accurate. I used the ADC0 channel 13 (PTC15) to detect the voltage. But I found that the 3.3V is the ADC value is 1023, (ten-bit resolution), but I detected 2.5V is the ADC value of 808, already The 0.1V is worse. What's even more strange is that the ADC value I detected for 0.5V is 78. This variation is already very large. Can help me check if my location problem or other problem, I will attach my code configuration</P></BODY></HTML> Fri, 02 Aug 2019 02:06:47 GMT https://community.nxp.com/t5/S32K/AD-detection-is-not-allowed/m-p/942852#M5091 ywjack 2019-08-02T02:06:47Z Re: AD detection is not allowed https://community.nxp.com/t5/S32K/AD-detection-is-not-allowed/m-p/942853#M5092 <HTML><HEAD></HEAD><BODY><P>Hello <A class="jx-jive-macro-user" href="https://community.nxp.com/people/ywjack@126.com">ywjack@126.com</A>,</P><P>Is the ADC module calibrated?</P><P>Do you use an EVB or your custom board?</P><P>Please measure VREFH, VREFL voltage.</P><P></P><P>Thank you,</P><P>BR, Daniel</P></BODY></HTML> Mon, 05 Aug 2019 12:07:45 GMT https://community.nxp.com/t5/S32K/AD-detection-is-not-allowed/m-p/942853#M5092 danielmartynek 2019-08-05T12:07:45Z