NFC PN7150 Internal Assert issue

[dominusdrr]

Hi.

I have a problem very similar to this thread, but with some differences

How to solve NFC PN7150 Internal Assert issue. 

In the same way I am sending an RF field generation:

0x21 0x03 0x09 0x04 0x00 0x01 0x02 0x01 0x01 0x01 0x06 0x01 (Star Discovery)

I then get an appropriate response from the NFC:

0x41 0x03 0x01 0x00 (RF_DISCOVER_RSP)

And then a CORE Reset notification

0x60 0x00 0x06 0xA0 0x00 0xB1 0xAB 0x20 0x00 (CORE_RESET_NTF)

It seems to me that it is different from the thread mentioned, since I do get a correct response to Star Discovery and the fields after 0xA0 in CORE_RESET_NTF are not equal to zero.

Any suggestion or comment?

[dominusdrr · Accepted solution]

Hi

It seems that I discovered the error.

I began to analyze each one of the frames that the DH sends and the PN7150 responds until I reach the clock configuration (NXP_CLK_CONF)

I was configuring as PLL

uint8_t NxpNci_CLK_CONF[] = 
{ 
0x20, 0x02, 0x09, 0x02, /* CORE_SET_CONFIG_CMD */ 
0xA0, 0x03, 0x01, 0x11, /* CLOCK_SEL_CFG */ 
0xA0, 0x04, 0x01, 0x01 /* CLOCK_TO_CFG */ 
};

But my hardware uses a 27.12MHz crystal and the setting must be Xtal

uint8_t NxpNci_CLK_CONF[] = { 
0x20, 0x02, 0x05, 0x01, /* CORE_SET_CONFIG_CMD */ 
0xA0, 0x03, 0x01, 0x08 /* CLOCK_SEL_CFG */ };

I thought that this mistake was not going to solve the problem, but after correcting it and checking just in case the error was repeated, to my surprise, it works fine.