https://community.nxp.com/t5/MCUXpresso-General/Issues-with-UART-on-k22/m-p/764200#M454 <HTML><HEAD></HEAD><BODY><P>Hello, I'm trying to get UART working on the k22 FRDM board and have been having some issues.&nbsp; I have been following the SDK 2.0 API Reference Manual (<A class="link-titled" href="https://mcuxpresso.nxp.com/apidoc/2.0/group__uart__driver.html#structuart__transfer__t" title="https://mcuxpresso.nxp.com/apidoc/2.0/group__uart__driver.html#structuart__transfer__t">Kinetis SDK 2.0 API Reference Manual: UART Driver</A>&nbsp;) and trying to implement either the polling or the interrupt methods.&nbsp;&nbsp; Both examples won't work, I'm using a slightly different sdk but the process of setting up UART should be similar (I'm using SDK_2.3.1_FRDM-K22F).&nbsp; I think there is something I am not initializing or setting up correctly but I am not sure.&nbsp; I keep getting this error:<BR />Error: CMSIS-DAP: Read Error (0x04)<BR />Error: Failed to read memory at 0xd36c0850</P></BODY></HTML> Tue, 24 Apr 2018 16:09:47 GMT shinerm 2018-04-24T16:09:47Z https://community.nxp.com/t5/MCUXpresso-General/Issues-with-UART-on-k22/m-p/764200#M454 <HTML><HEAD></HEAD><BODY><P>Hello, I'm trying to get UART working on the k22 FRDM board and have been having some issues.&nbsp; I have been following the SDK 2.0 API Reference Manual (<A class="link-titled" href="https://mcuxpresso.nxp.com/apidoc/2.0/group__uart__driver.html#structuart__transfer__t" title="https://mcuxpresso.nxp.com/apidoc/2.0/group__uart__driver.html#structuart__transfer__t">Kinetis SDK 2.0 API Reference Manual: UART Driver</A>&nbsp;) and trying to implement either the polling or the interrupt methods.&nbsp;&nbsp; Both examples won't work, I'm using a slightly different sdk but the process of setting up UART should be similar (I'm using SDK_2.3.1_FRDM-K22F).&nbsp; I think there is something I am not initializing or setting up correctly but I am not sure.&nbsp; I keep getting this error:<BR />Error: CMSIS-DAP: Read Error (0x04)<BR />Error: Failed to read memory at 0xd36c0850</P></BODY></HTML> Tue, 24 Apr 2018 16:09:47 GMT https://community.nxp.com/t5/MCUXpresso-General/Issues-with-UART-on-k22/m-p/764200#M454 shinerm 2018-04-24T16:09:47Z https://community.nxp.com/t5/MCUXpresso-General/Issues-with-UART-on-k22/m-p/764201#M455 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>Please let me know how you connect the FRDM-K22F, the P&amp;E OpenSDA or Segger J-Link? Would you mind to give as much information as what you had done, that will much helpful.</P></BODY></HTML> Wed, 02 May 2018 17:01:08 GMT https://community.nxp.com/t5/MCUXpresso-General/Issues-with-UART-on-k22/m-p/764201#M455 miduo 2018-05-02T17:01:08Z