topic ERR in using SWD_DIO pin to gpio pin in Kinetis Microcontrollers https://community.nxp.com/t5/Kinetis-Microcontrollers/ERR-in-using-SWD-DIO-pin-to-gpio-pin/m-p/1405731#M62310 <P>I want to use SWD_DIO pin to PTA4.&nbsp;</P><P>&nbsp;</P><P>but when i debug, if code go through this code, debugger shows me 'no source available for "__isr_vector() 0x4"'</P><P>and debug stops.</P><P>&nbsp;</P><P>why this problem happen? datasheet says SWD_DIO pin is 'Serial Wire Debug Data input/output', so debug process can't go more?</P><P>&nbsp;</P><P>&nbsp;</P> Thu, 27 Jan 2022 05:39:52 GMT ETSZ 2022-01-27T05:39:52Z ERR in using SWD_DIO pin to gpio pin https://community.nxp.com/t5/Kinetis-Microcontrollers/ERR-in-using-SWD-DIO-pin-to-gpio-pin/m-p/1405731#M62310 <P>I want to use SWD_DIO pin to PTA4.&nbsp;</P><P>&nbsp;</P><P>but when i debug, if code go through this code, debugger shows me 'no source available for "__isr_vector() 0x4"'</P><P>and debug stops.</P><P>&nbsp;</P><P>why this problem happen? datasheet says SWD_DIO pin is 'Serial Wire Debug Data input/output', so debug process can't go more?</P><P>&nbsp;</P><P>&nbsp;</P> Thu, 27 Jan 2022 05:39:52 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/ERR-in-using-SWD-DIO-pin-to-gpio-pin/m-p/1405731#M62310 ETSZ 2022-01-27T05:39:52Z Re: ERR in using SWD_DIO pin to gpio pin https://community.nxp.com/t5/Kinetis-Microcontrollers/ERR-in-using-SWD-DIO-pin-to-gpio-pin/m-p/1405770#M62312 <P>Yes, if you map a pin used by SWD/Debug as a GPIO pin, you won't be able to debug any more.</P> Thu, 27 Jan 2022 06:39:03 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/ERR-in-using-SWD-DIO-pin-to-gpio-pin/m-p/1405770#M62312 ErichStyger 2022-01-27T06:39:03Z