topic Re: How to calculate PIT PIT_LDVALn register value in Kinetis Microcontrollers https://community.nxp.com/t5/Kinetis-Microcontrollers/How-to-calculate-PIT-PIT-LDVALn-register-value/m-p/614863#M36550 <HTML><HEAD></HEAD><BODY><P>Hi Irmantas Budrys,</P><P>&nbsp;&nbsp;&nbsp;</P><P>&nbsp;&nbsp;&nbsp;&nbsp; Actually, the calculation is very simple.</P><P>&nbsp;&nbsp;&nbsp; You also can refer to the KEA128 reference manual, chapter 28.5 Initialization and application information.</P><P>&nbsp;&nbsp; If your bus clock is 24Mhz, then you want to get 1ms, the pit clock is the bus clock, so:</P><P>&nbsp; PIT_LDVALn = 1ms /bus clock =24000= 0x5dc0.</P><P></P><P>Wish it helps you!</P><P>If you still have problem, please contact me!</P><P></P><P><BR />Have a great day,<BR />Kerry</P><P></P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Mon, 31 Oct 2016 05:45:47 GMT kerryzhou 2016-10-31T05:45:47Z How to calculate PIT PIT_LDVALn register value https://community.nxp.com/t5/Kinetis-Microcontrollers/How-to-calculate-PIT-PIT-LDVALn-register-value/m-p/614862#M36549 <HTML><HEAD></HEAD><BODY><P style="color: #51626f; background-color: #ffffff; border: 0px;">Hello All,</P><P style="color: #51626f; background-color: #ffffff; border: 0px;">&nbsp;</P><P style="color: #51626f; background-color: #ffffff; border: 0px;">I am using FRDM DEV BRD KEAZ128 and S32. Bus frequency is 24MHz. Lets say I want interrupt every 1ms. Could you explain me how to calculate&nbsp;PIT_LDVALn register value to generate this interrupt?&nbsp;</P><P style="color: #51626f; background-color: #ffffff; border: 0px;"></P><P style="color: #51626f; background-color: #ffffff; border: 0px;">Best Regards,</P><P style="color: #51626f; background-color: #ffffff; border: 0px;">IB</P></BODY></HTML> Sun, 30 Oct 2016 22:31:35 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/How-to-calculate-PIT-PIT-LDVALn-register-value/m-p/614862#M36549 irmantasbudrys 2016-10-30T22:31:35Z Re: How to calculate PIT PIT_LDVALn register value https://community.nxp.com/t5/Kinetis-Microcontrollers/How-to-calculate-PIT-PIT-LDVALn-register-value/m-p/614863#M36550 <HTML><HEAD></HEAD><BODY><P>Hi Irmantas Budrys,</P><P>&nbsp;&nbsp;&nbsp;</P><P>&nbsp;&nbsp;&nbsp;&nbsp; Actually, the calculation is very simple.</P><P>&nbsp;&nbsp;&nbsp; You also can refer to the KEA128 reference manual, chapter 28.5 Initialization and application information.</P><P>&nbsp;&nbsp; If your bus clock is 24Mhz, then you want to get 1ms, the pit clock is the bus clock, so:</P><P>&nbsp; PIT_LDVALn = 1ms /bus clock =24000= 0x5dc0.</P><P></P><P>Wish it helps you!</P><P>If you still have problem, please contact me!</P><P></P><P><BR />Have a great day,<BR />Kerry</P><P></P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Mon, 31 Oct 2016 05:45:47 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/How-to-calculate-PIT-PIT-LDVALn-register-value/m-p/614863#M36550 kerryzhou 2016-10-31T05:45:47Z