Other Parts Discussed in Thread: TRF7970A
Hi Team,
Our customer encountered an error after changing the device from TRF7970A to TRF7962A due to stocks issue. According to our customer,
We have been using the TRF7970A in a product for some time but due to availability decided to change to the TRF7962A as we only need to read ISO15693 tags.
From the datasheets both parts look identical but using the same code that we used on the TRF7970A we get continual TX errors awaiting the first interrupt event after sending the inventory command:
// Issue inventory command
trf_buffer[0] = 0x8F; // Reset FIFO
trf_buffer[1] = 0x91; // Send with CRC
trf_buffer[2] = 0x3D; // Write Continuous
trf_buffer[3] = 0x00; // Length of packet in bytes - upper and middle nibbles of transmit byte length
trf_buffer[4] = 0x30; // Length of packet in bytes - lower and broken nibbles of transmit byte length
trf_buffer[5] = 0x26; // ISO15693 flags
trf_buffer[6] = 0x01; // Inventory command code
trf_buffer[7] = 0x00; // Mask Length = 0 (Also not sending AFI)
Tag.writeBuffer(trf_buffer, 8);
What are we missing, is there something different between the two devices?
Regards,
Danilo
