RE: BLE 5 transmiter/receiver examples nRFF52840

usman — Tue, 18 Feb 2020 15:45:30 GMT

In your code i am not getting this part

¨¨uint32_t preamble_mask = (RADIO_PCNF0_PLEN_LongRange << RADIO_PCNF0_PLEN_Pos) | (2 << RADIO_PCNF0_CILEN_Pos) | (3 << RADIO_PCNF0_TERMLEN_Pos);

¨¨¨¨

can you please explain this that how to modify this part of code

thanks

RE: BLE 5 transmiter/receiver examples nRFF52840

Ole Bauck — Thu, 23 Feb 2017 10:10:16 GMT

Hi,

These are the changes you need to do to make it work in BLE Long Range mode:

#define PACKET_BASE_ADDRESS_LENGTH  (3UL)
...
#define PACKET_S1_FIELD_SIZE      (1UL)
#define PACKET_S0_FIELD_SIZE      (2UL)
#define PACKET_LENGTH_FIELD_SIZE  (8UL)
...
NRF_RADIO->MODE      = (RADIO_MODE_MODE_Ble_LR125Kbit << RADIO_MODE_MODE_Pos);
...
uint32_t preamble_mask =	(RADIO_PCNF0_PLEN_LongRange << RADIO_PCNF0_PLEN_Pos) |
							(2                          << RADIO_PCNF0_CILEN_Pos) |
							(3                          << RADIO_PCNF0_TERMLEN_Pos);

NRF_RADIO->PCNF0 = (PACKET_S1_FIELD_SIZE     << RADIO_PCNF0_S1LEN_Pos) |
                   (PACKET_S0_FIELD_SIZE     << RADIO_PCNF0_S0LEN_Pos) |
                   (PACKET_LENGTH_FIELD_SIZE << RADIO_PCNF0_LFLEN_Pos) |
				   preamble_mask;
...
NRF_RADIO->CRCCNF = (RADIO_CRCCNF_SKIPADDR_Skip    << RADIO_CRCCNF_SKIPADDR_Pos) |
					(RADIO_CRCCNF_LEN_Three        << RADIO_CRCCNF_LEN_Pos);

Ole