About Philip Lane

Philip Lane · 2019-09-23

I am using a CR95HF chip with ISO14443A cards. I can select the card, read it's UID and all the data storred on the card without any errors.The problem is when I remove one card out of the field and place another card in the field, it refuses to resp...

Philip Lane · 2019-09-13

I am attempting to connect to one of ST's CR95HF NFC chips, but I can't get it to respond correctly to the echo command.1) Reset CR95HF by toggling the IRQ line2) Set chip select line low3) Send two bytes : 0x00 0x55 = Command Echo4) Set chip select ...

Philip Lane · 2018-05-30

Posted on May 30, 2018 at 18:02I'm using an STM8L051F3 chip as slave and a STM32L476 as master, but the STM8L refuses to respond, it keeps reporting a SR2->BERR aka busy error.I know the STM32 code is ok as I had two of them working on an I2C link w...

Philip Lane · 2018-03-13

Posted on March 13, 2018 at 10:20I have been using ST Visual develop for months, with the same MCU: STM8L, compiling and debugging with no problem.Then yesterday I started getting a message to say that it can't start GDB :Starting debug session... -...

Philip Lane · 2019-09-24

Here is a complete transcript od the process :cr95hf_Select_protocol()Tx : 00 02 02 02 00Rx : 0E 00 00 00 00 00 00 00 00 00--- Polling---Tx : 00 04 02 26 07 00Rx : 0D 80 05 44 00 28--- Reading---cr95hf_read_card()Tx : 00 04 06 09 04 3A 00 58 04Rx : 0...

Philip Lane · 2019-09-17

Hi,Thanks - all working now.It was due to the Tx and Rx lengths, they both need to be 2 for sending the echo and also for reading the responce. Plus the responce packet is two bytes long, not one. I's 0x0E 0x55 !Thanks for your help

Philip Lane · 2019-09-16

Hi,Thanks. I toggle the IRQ_IN pin to wake up the chip and then send a reset command (0x01) to reset it.At the moment I can' use the IRQ_OUT, I dont have any spare pins. Is it really necessary to use this pin or is the polling ok ?I am using an ESP32...

Philip Lane · 2018-03-15

Posted on March 15, 2018 at 14:32It's fixed it's self. I reset my PC a few times - that did nothing. But, oddly, after a windows update it now works again!Thinking about it, the problem may have occurred shortly after a windows update, not that I'm ...

Philip Lane · 2018-03-09

Posted on March 09, 2018 at 14:14Ahh - ok, problem is I don't see that button. I'm running : Version 65.0.3325.146 (Official Build) (32-bit)

User statistics

User Activity

CR95HF ISO14443A stop reading one card and read another

CR95HF echo command retuens 0x0E

I2C always reports ''busy'', SR2->BERR

Failed to start GDB.

Re: CR95HF ISO14443A stop reading one card and read another

Re: CR95HF echo command retuens 0x0E

Re: CR95HF echo command retuens 0x0E

Re: Failed to start GDB.

Re: Why people got their answer but not mark correct