led_radio_example.rar_nrf51822_nrf51822 led

/* 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); }