topic Re: PN512 selftest in NFC https://community.nxp.com/t5/NFC/PN512-selftest/m-p/807799#M4069 <HTML><HEAD></HEAD><BODY><P>Indeed was my software bug. Read FIFO routine was faulty as didn't correctly set address for next read.</P></BODY></HTML> Fri, 13 Jul 2018 10:40:02 GMT slavko_kocjanci 2018-07-13T10:40:02Z PN512 selftest https://community.nxp.com/t5/NFC/PN512-selftest/m-p/807798#M4068 <HTML><HEAD></HEAD><BODY><P>Hello...<BR />I try to make own reader with PN512 and AtXmega. I assume that board is working, and SPI communication is ok.<BR />At least if I read some registers from PN512 (CommandReg, CommIRqReg, WaterLevelReg, ModeReg) I got correct values as should be at poweron. Also if I write WaterLevelReg for example and read back I got correct value.</P><P></P><P>But if I try to perform selftest I got totally unexpected result.<BR />Here is 'pseudocode' I execute. What are wrong.</P><P></P><P></P><P></P><P>//1. Perform a soft reset.<BR />SpiWrite(CommandReg,SoftReset);</P><P></P><P>//2. Clear the internal buffer by writing 25 bytes of 00h and perform the Config Command.<BR />SpiWrite(FIFODataReg,00*25);<BR />SpiWrite(CommandReg,Configure);</P><P></P><P>//3. Enable the Selftest by writing the value 09h to the register AutoTestReg.<BR />SpiWrite(AutoTestReg,0x09);</P><P></P><P>//4. Write 00h to the FIFO.<BR />SpiWrite(FIFODataReg,0x00);</P><P></P><P>//5. Start the Selftest with the CalcCRC Command.<BR />SpiWrite(CommandReg,CalcCRC);</P><P></P><P>//6. The Selftest will be performed.<BR />_delay_ms(1000); //do I need to check bussy? for now just wait</P><P></P><P>//7. When the Selftest is finished, the FIFO contains the following bytes:<BR />SpiRead(FIFODataReg,64 bytes);</P><P></P><P>And result is:<BR />0x00 0x05 0x09 0x09 0x09 0x09 0x09 0x09<BR />0x09 0x09 0x09 0x09 0x09 0x09 0x09 0x09<BR />0x09 0x09 0x09 0x09 0x09 0x09 0x09 0x09<BR />0x09 0x09 0x09 0x09 0x09 0x09 0x09 0x09<BR />0x09 0x09 0x09 0x09 0x09 0x09 0x09 0x09<BR />0x09 0x09 0x09 0x09 0x09 0x09 0x09 0x09<BR />0x09 0x09 0x09 0x09 0x09 0x09 0x09 0x09<BR />0x09 0x09 0x09 0x09 0x09 0x09 0x09 0x09</P></BODY></HTML> Thu, 12 Jul 2018 12:42:24 GMT https://community.nxp.com/t5/NFC/PN512-selftest/m-p/807798#M4068 slavko_kocjanci 2018-07-12T12:42:24Z Re: PN512 selftest https://community.nxp.com/t5/NFC/PN512-selftest/m-p/807799#M4069 <HTML><HEAD></HEAD><BODY><P>Indeed was my software bug. Read FIFO routine was faulty as didn't correctly set address for next read.</P></BODY></HTML> Fri, 13 Jul 2018 10:40:02 GMT https://community.nxp.com/t5/NFC/PN512-selftest/m-p/807799#M4069 slavko_kocjanci 2018-07-13T10:40:02Z