topic KL70 RTC not running in Kinetis Microcontrollers https://community.nxp.com/t5/Kinetis-Microcontrollers/KL70-RTC-not-running/m-p/473913#M28754 <HTML><HEAD></HEAD><BODY><P>Whenever I attempt to read the time from the RTC it will always return the same value that I originally set it to.&nbsp; It does not update.&nbsp;&nbsp; I have checked the external clock and it is producing a 32khz signal into the EXTAL32 pins.&nbsp;&nbsp; I have checked the BSP code and it is executing the _rtc_init function on startup.&nbsp; I have traced the code and it does get into that function.&nbsp; As I said I can write and read the RTC and it retains the time that I sent to it.&nbsp;&nbsp; Any other ideas?</P></BODY></HTML> Mon, 25 Apr 2016 15:32:41 GMT philmac 2016-04-25T15:32:41Z KL70 RTC not running https://community.nxp.com/t5/Kinetis-Microcontrollers/KL70-RTC-not-running/m-p/473913#M28754 <HTML><HEAD></HEAD><BODY><P>Whenever I attempt to read the time from the RTC it will always return the same value that I originally set it to.&nbsp; It does not update.&nbsp;&nbsp; I have checked the external clock and it is producing a 32khz signal into the EXTAL32 pins.&nbsp;&nbsp; I have checked the BSP code and it is executing the _rtc_init function on startup.&nbsp; I have traced the code and it does get into that function.&nbsp; As I said I can write and read the RTC and it retains the time that I sent to it.&nbsp;&nbsp; Any other ideas?</P></BODY></HTML> Mon, 25 Apr 2016 15:32:41 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/KL70-RTC-not-running/m-p/473913#M28754 philmac 2016-04-25T15:32:41Z Re: KL70 RTC not running https://community.nxp.com/t5/Kinetis-Microcontrollers/KL70-RTC-not-running/m-p/473914#M28755 <HTML><HEAD></HEAD><BODY><P>Discovered the problem.&nbsp; Internal Loading Capacitance needed to be set in the RTC_CR register.&nbsp;&nbsp; The CPU board does not have any cap's populated in the external clock circuit.</P></BODY></HTML> Mon, 25 Apr 2016 20:21:35 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/KL70-RTC-not-running/m-p/473914#M28755 philmac 2016-04-25T20:21:35Z