/* Copyright (c) 2009 Nordic Semiconductor. All Rights Reserved.
*
* The information contained herein is property of Nordic Semiconductor ASA.
* Terms and conditions of usage are described in detail in NORDIC
* SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
*
* Licensees are granted free, non-transferable use of the information. NO
* WARRANTY of ANY KIND is provided. This heading must NOT be removed from
* the file.
*
*/
#include "radio_config.h"
#include "nrf_delay.h"
#define PACKET0_S1_SIZE (0UL) //!< S1 size in bits
#define PACKET0_S0_SIZE (0UL) //!< S0 size in bits
#define PACKET0_PAYLOAD_SIZE (0UL) //!< payload size in bits
#define PACKET1_BASE_ADDRESS_LENGTH (4UL) //!< base address length in bytes
#define PACKET1_STATIC_LENGTH (1UL) //!< static length in bytes
#define PACKET1_PAYLOAD_SIZE (1UL) //!< payload size in bytes
void radio_configure()
{
// Radio config
NRF_RADIO->TXPOWER = (RADIO_TXPOWER_TXPOWER_0dBm << RADIO_TXPOWER_TXPOWER_Pos);
NRF_RADIO->FREQUENCY = 7UL; // Frequency bin 7, 2407MHz
NRF_RADIO->MODE = (RADIO_MODE_MODE_Nrf_2Mbit << RADIO_MODE_MODE_Pos);
// Radio address config
NRF_RADIO->PREFIX0 = 0xC4C3C2E7UL; // Prefix byte of addresses 3 to 0
NRF_RADIO->PREFIX1 = 0xC5C6C7C8UL; // Prefix byte of addresses 7 to 4
NRF_RADIO->BASE0 = 0xE7E7E7E7UL; // Base address for prefix 0
NRF_RADIO->BASE1 = 0x00C2C2C2UL; // Base address for prefix 1-7
NRF_RADIO->TXADDRESS = 0x00UL; // Set device address 0 to use when transmitting
NRF_RADIO->RXADDRESSES = 0x01UL; // Enable device address 0 to use which receiving
// Packet configuration
NRF_RADIO->PCNF0 = (PACKET0_S1_SIZE << RADIO_PCNF0_S1LEN_Pos) |
(PACKET0_S0_SIZE << RADIO_PCNF0_S0LEN_Pos) |
(PACKET0_PAYLOAD_SIZE << RADIO_PCNF0_LFLEN_Pos); //lint !e845 "The right argument to operator '|' is certain to be 0"
// Packet configuration
NRF_RADIO->PCNF1 = (RADIO_PCNF1_WHITEEN_Disabled << RADIO_PCNF1_WHITEEN_Pos) |
(RADIO_PCNF1_ENDIAN_Big << RADIO_PCNF1_ENDIAN_Pos) |
(PACKET1_BASE_ADDRESS_LENGTH << RADIO_PCNF1_BALEN_Pos) |
(PACKET1_STATIC_LENGTH << RADIO_PCNF1_STATLEN_Pos) |
(PACKET1_PAYLOAD_SIZE << RADIO_PCNF1_MAXLEN_Pos); //lint !e845 "The right argument to operator '|' is certain to be 0"
// CRC Config
NRF_RADIO->CRCCNF = (RADIO_CRCCNF_LEN_Two << RADIO_CRCCNF_LEN_Pos); // Number of checksum bits
if ((NRF_RADIO->CRCCNF & RADIO_CRCCNF_LEN_Msk) == (RADIO_CRCCNF_LEN_Two << RADIO_CRCCNF_LEN_Pos))
{
NRF_RADIO->CRCINIT = 0xFFFFUL; // Initial value
NRF_RADIO->CRCPOLY = 0x11021UL; // CRC poly: x^16+x^12^x^5+1
}
else if ((NRF_RADIO->CRCCNF & RADIO_CRCCNF_LEN_Msk) == (RADIO_CRCCNF_LEN_One << RADIO_CRCCNF_LEN_Pos))
{
NRF_RADIO->CRCINIT = 0xFFUL; // Initial value
NRF_RADIO->CRCPOLY = 0x107UL; // CRC poly: x^8+x^2^x^1+1
}
nrf_delay_ms(3);
}
