RE: nRF51422, receiving packets in "proprietary mode"

Vito — Fri, 03 Oct 2014 09:15:38 GMT

that's pretty much what I needed to know. So no way to wildcard address I guess

RE: nRF51422, receiving packets in "proprietary mode"

Håkon Alseth — Fri, 03 Oct 2014 09:07:53 GMT

How the BASEx and PREFIX-es are setup together is showed in the RM chapter 16.1.4.

Here's a short example setup of the RADIO peripheral:

NRF_RADIO->BASE1 = 0x12345678;
NRF_RADIO->PREFIX0 = 0x44332211;
NRF_RADIO->RXADDRESSES = (uint8_t)(BIT_1 | BIT_2);

This will enable "Logical address" 1 and 2, which are:

LogicAddr1 = 0x1234567822
LogicAddr2 = 0x1234567833

If you've only enabled these two receiving addresses, the radio will not generate an ADDRESS event if the address is not equal to any of the two above logical addresses.

You can think of the addressing like a postal address. If you live at 2nd avenue apartment 100, you will not receive the mail for 3rd avenue apartment 100, unless the postal service makes a mistake or the sender gives an incorrect address (translated to RF-terms; unless your configuration is incorrect or a transmitter sends on the same frequency and address).

The RXMATCH register will hold the value of the last logical address on which you received a valid payload on. In a normal reception, you will first get the ADDRESS event, then the PAYLOAD event. You can check the CRC status (if enabled) in the register CRCSTATUS.

Cheers, Håkon