8-bit MicrocontrollersのトピックRe: How to know the current CAN Transmit errors and receive errors? https://community.nxp.com/t5/8-bit-Microcontrollers/How-to-know-the-current-CAN-Transmit-errors-and-receive-errors/m-p/154049#M8665 <HTML><HEAD></HEAD><BODY>you can't read the number of errors.<BR /><BR />you can check these bits:<BR /><BR />CANRFLG_OVRIF&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR />CANRFLG_TSTAT0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR />CANRFLG_TSTAT1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR />CANRFLG_RSTAT0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR />CANRFLG_RSTAT1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR /><BR />they are readable anytime<BR /><BR /><DIV></DIV></BODY></HTML> Sun, 18 May 2008 18:49:43 GMT Bruce_andrew 2008-05-18T18:49:43Z How to know the current CAN Transmit errors and receive errors? https://community.nxp.com/t5/8-bit-Microcontrollers/How-to-know-the-current-CAN-Transmit-errors-and-receive-errors/m-p/154048#M8664 <HTML><HEAD></HEAD><BODY><SPAN>Hi to all, i would like to know the current number of errors and there is 2 registers called:</SPAN><BR /><BR /><SPAN>CANTXERR (MSCAN Transmit Error Counter)</SPAN><BR /><SPAN>CANRXERR (MSCAN Receive Error Counter)</SPAN><BR /><BR /><SPAN>Both registers have the number of transmision and reception errors, but the datasheet says:</SPAN><BR /><BR /><STRONG><I>Read: Only when in sleep mode (SLPRQ = 1 and SLPAK = 1) or initialization mode (INITRQ = 1 and<BR />INITAK = 1)<BR /><BR />NOTE<BR />Reading this register when in any other mode other than sleep or<BR />initialization mode, may return an incorrect value. For MCUs with dual<BR />CPUs, this may result in a CPU fault condition.</I></STRONG><BR /><BR /><SPAN>And I can't go back to initialization mode or go to sleep mode (it's not up to me).</SPAN><BR /><BR /><SPAN>Is there another way to know the current errors?</SPAN><BR /><BR /><SPAN>Thank you very much...</SPAN><BR /><DIV> </DIV></BODY></HTML> Thu, 08 May 2008 01:31:40 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/How-to-know-the-current-CAN-Transmit-errors-and-receive-errors/m-p/154048#M8664 Saga 2008-05-08T01:31:40Z Re: How to know the current CAN Transmit errors and receive errors? https://community.nxp.com/t5/8-bit-Microcontrollers/How-to-know-the-current-CAN-Transmit-errors-and-receive-errors/m-p/154049#M8665 <HTML><HEAD></HEAD><BODY>you can't read the number of errors.<BR /><BR />you can check these bits:<BR /><BR />CANRFLG_OVRIF&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR />CANRFLG_TSTAT0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR />CANRFLG_TSTAT1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR />CANRFLG_RSTAT0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR />CANRFLG_RSTAT1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR /><BR />they are readable anytime<BR /><BR /><DIV></DIV></BODY></HTML> Sun, 18 May 2008 18:49:43 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/How-to-know-the-current-CAN-Transmit-errors-and-receive-errors/m-p/154049#M8665 Bruce_andrew 2008-05-18T18:49:43Z