Sep 29, 2015 06:08:58 PM, nfc_rfid@mail.e2e.ti.com wrote:
A Message from the TI E2E™ Community
John Crutchfield replied to TRF7970A NFC polling mode issue. receiving interrupt error.
Hey Dennis,
0xC0 is typically because either the MCU host is to slow to service the IRQ Status Register. It just means that by the time it was read, the RX was already started, or in really slow cases, already finished.
What is your SPI clock freq? 2MHz is typical.
Is there anything in your software causing large latency such as an operating system, etc?
Thanks,
JD
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