NXP DesignsのトピックPN5180 with linux_libnfc-nci or WRITE_NDEF https://community.nxp.com/t5/NXP-Designs/PN5180-with-linux-libnfc-nci-or-WRITE-NDEF/m-p/948467#M59 <HTML><HEAD></HEAD><BODY><P>I'm trying to use the PN5180 high-power NFC reader on Raspbian. This reader uses SPI. Whenever I try to send continuous NDEF messages (an image split into 200-byte parts) I always end up getting "Internal Error" (defined within the ph-status.h file) after a random number of messages sent. I am not sure if it's the receiver's fault or the reader's fault. Sometimes adding long 1-second delays helps it, but it's not guaranteed, and it takes sometimes 10 seconds to timeout on a send. I need the process to finish within 5 seconds maximum.&nbsp;</P><P>The&nbsp;library that comes with it (SW3693) doesn't have any good examples for writing NDEF messages, it only has a bunch of "forum" examples, discovery loops, and edge-case solutions. The only one that is of any use is Example3_NFCForum, and I had to heavily modify that to do a simple NDEF message write using <STRONG>phalTop_WriteNdef</STRONG>().</P><P></P><P>Before this I had used the PN7150 (lower power) also on Raspbian. This library uses I2C instead of SPI, but it never once dropped a packet or got an internal error. It also has multiple actually useful examples, including a tag-write_example, which was what I modeled my image transfer program after.</P><P>I'd much prefer to use this library instead of the PN5180 libraries, or at least have an example that works consistently.</P><P></P><P>Can someone direct me to the correct resources?</P></BODY></HTML> Mon, 21 Oct 2019 23:56:19 GMT riley_baird 2019-10-21T23:56:19Z PN5180 with linux_libnfc-nci or WRITE_NDEF https://community.nxp.com/t5/NXP-Designs/PN5180-with-linux-libnfc-nci-or-WRITE-NDEF/m-p/948467#M59 <HTML><HEAD></HEAD><BODY><P>I'm trying to use the PN5180 high-power NFC reader on Raspbian. This reader uses SPI. Whenever I try to send continuous NDEF messages (an image split into 200-byte parts) I always end up getting "Internal Error" (defined within the ph-status.h file) after a random number of messages sent. I am not sure if it's the receiver's fault or the reader's fault. Sometimes adding long 1-second delays helps it, but it's not guaranteed, and it takes sometimes 10 seconds to timeout on a send. I need the process to finish within 5 seconds maximum.&nbsp;</P><P>The&nbsp;library that comes with it (SW3693) doesn't have any good examples for writing NDEF messages, it only has a bunch of "forum" examples, discovery loops, and edge-case solutions. The only one that is of any use is Example3_NFCForum, and I had to heavily modify that to do a simple NDEF message write using <STRONG>phalTop_WriteNdef</STRONG>().</P><P></P><P>Before this I had used the PN7150 (lower power) also on Raspbian. This library uses I2C instead of SPI, but it never once dropped a packet or got an internal error. It also has multiple actually useful examples, including a tag-write_example, which was what I modeled my image transfer program after.</P><P>I'd much prefer to use this library instead of the PN5180 libraries, or at least have an example that works consistently.</P><P></P><P>Can someone direct me to the correct resources?</P></BODY></HTML> Mon, 21 Oct 2019 23:56:19 GMT https://community.nxp.com/t5/NXP-Designs/PN5180-with-linux-libnfc-nci-or-WRITE-NDEF/m-p/948467#M59 riley_baird 2019-10-21T23:56:19Z Re: PN5180 with linux_libnfc-nci or WRITE_NDEF https://community.nxp.com/t5/NXP-Designs/PN5180-with-linux-libnfc-nci-or-WRITE-NDEF/m-p/948468#M60 <HTML><HEAD></HEAD><BODY><P>Could you tell me where is the error? Or add "printf" for debugging to narrow down the issue?</P></BODY></HTML> Thu, 31 Oct 2019 09:05:09 GMT https://community.nxp.com/t5/NXP-Designs/PN5180-with-linux-libnfc-nci-or-WRITE-NDEF/m-p/948468#M60 jimmychan 2019-10-31T09:05:09Z