Other Parts Discussed in Thread: MSP430G2553, TRF7970A
Hi, TI support team
The customer has applied the TRF7962A and has a problem during the test, so please contact us as follows.
Please check the contents below and respond to your inquiries.
Currently, we have implemented spi communication function using Synaptics' CPU. (Confirm that transmission by 1 Byte is normally transmitted as a result of measurement with a logic analyzer)
I received an example code for controlling TRF7970A using MSP430G2553 MCU,
Ported the source code of the received example code except for the spi communication part (iso15693, nfc_app, trf79xxa).
I created a thread and implemented the code to call the NFC_findTag function every second.
The result of analyzing the waveform by measuring with a logic analyzer is as follows.
- When data transmission/reception is in progress, it is confirmed that the SlaveSelect pin is normally cleared.
Q. Is it being controlled in a normal cycle?
- In the process of receiving and receiving data through MISO, data is transmitted through MOSI.
Q. Could this be a problem?
- Initially, after sending work commands such as initial and reset, and sending 8 bytes of data in ISO15693_sendSingleSlotInventory function, TimeOut occurs in TRF79xxA_waitRxData function.
- It is assumed that TimeOut occurs because Interrupt Request is not processed normally.
Q. Among the measured waveform signals, are the signals for the IRQ pin normal?
This is an additional inquiry.
I would like to review the EVM for the TRF7962A, but the EVM is not found on ti.com.
Is there a way to review the reference for the TRF7962A?
I would appreciate it if you could tell me how.
Thanks.
Regards,
MJ