Загрузить исходник nrf24.h
/*
* ----------------------------------------------------------------------------
* “THE COFFEEWARE LICENSE” (Revision 1):
* <[email protected]> wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a coffee in return.
* -----------------------------------------------------------------------------
* This library is based on this library:
* https://github.com/aaronds/arduino-nrf24l01
* Which is based on this library:
* http://www.tinkerer.eu/AVRLib/nRF24L01
* -----------------------------------------------------------------------------
*/
#ifndef NRF24
#define NRF24
#include <stdint.h>
#include <avr/io.h>
#ifdef TURTLE
#define NRF24_IO_PORT PORTB
#define NRF24_IO_PINREG PINB
#define NRF24_IO_DDR DDRB
#else
#define NRF24_IO_PORT PORTC
#define NRF24_IO_PINREG PINC
#define NRF24_IO_DDR DDRC
#endif
#define NRF24_CE_PIN 0
#define NRF24_CSN_PIN 1
#define NRF24_SCK_PIN 2
#define NRF24_MOSI_PIN 3
#define NRF24_MISO_PIN 4
/* IO Helpers */
#define nrf24_set_bit(reg,bit) reg |= (1<<bit)
#define nrf24_clr_bit(reg,bit) reg &= ~(1<<bit)
#define nrf24_check_bit(reg,bit) (reg&(1<<bit))
/* Memory Map */
#define CONFIG 0x00
#define EN_AA 0x01
#define EN_RXADDR 0x02
#define SETUP_AW 0x03
#define SETUP_RETR 0x04
#define RF_CH 0x05
#define RF_SETUP 0x06
#define STATUS 0x07
#define OBSERVE_TX 0x08
#define CD 0x09
#define RX_ADDR_P0 0x0A
#define RX_ADDR_P1 0x0B
#define RX_ADDR_P2 0x0C
#define RX_ADDR_P3 0x0D
#define RX_ADDR_P4 0x0E
#define RX_ADDR_P5 0x0F
#define TX_ADDR 0x10
#define RX_PW_P0 0x11
#define RX_PW_P1 0x12
#define RX_PW_P2 0x13
#define RX_PW_P3 0x14
#define RX_PW_P4 0x15
#define RX_PW_P5 0x16
#define FIFO_STATUS 0x17
#define DYNPD 0x1C
/* Bit Mnemonics */
/* configuratio nregister */
#define MASK_RX_DR 6
#define MASK_TX_DS 5
#define MASK_MAX_RT 4
#define EN_CRC 3
#define CRCO 2
#define PWR_UP 1
#define PRIM_RX 0
/* enable auto acknowledgment */
#define ENAA_P5 5
#define ENAA_P4 4
#define ENAA_P3 3
#define ENAA_P2 2
#define ENAA_P1 1
#define ENAA_P0 0
/* enable rx addresses */
#define ERX_P5 5
#define ERX_P4 4
#define ERX_P3 3
#define ERX_P2 2
#define ERX_P1 1
#define ERX_P0 0
/* setup of address width */
#define AW 0 /* 2 bits */
/* setup of auto re-transmission */
#define ARD 4 /* 4 bits */
#define ARC 0 /* 4 bits */
/* RF setup register */
#define PLL_LOCK 4
#define RF_DR 3
#define RF_PWR 1 /* 2 bits */
/* general status register */
#define RX_DR 6
#define TX_DS 5
#define MAX_RT 4
#define RX_P_NO 1 /* 3 bits */
#define TX_FULL 0
/* transmit observe register */
#define PLOS_CNT 4 /* 4 bits */
#define ARC_CNT 0 /* 4 bits */
/* fifo status */
#define TX_REUSE 6
#define FIFO_FULL 5
#define TX_EMPTY 4
#define RX_FULL 1
#define RX_EMPTY 0
/* dynamic length */
#define DPL_P0 0
#define DPL_P1 1
#define DPL_P2 2
#define DPL_P3 3
#define DPL_P4 4
#define DPL_P5 5
/* Instruction Mnemonics */
#define R_REGISTER 0x00 /* last 4 bits will indicate reg. address */
#define W_REGISTER 0x20 /* last 4 bits will indicate reg. address */
#define REGISTER_MASK 0x1F
#define R_RX_PAYLOAD 0x61
#define W_TX_PAYLOAD 0xA0
#define FLUSH_TX 0xE1
#define FLUSH_RX 0xE2
#define REUSE_TX_PL 0xE3
#define ACTIVATE 0x50
#define R_RX_PL_WID 0x60
#define NOP 0xFF
#define LOW 0
#define HIGH 1
#define nrf24_ADDR_LEN 5
#define nrf24_CONFIG ((1<<EN_CRC)|(0<<CRCO))
#define NRF24_TRANSMISSON_OK 0
#define NRF24_MESSAGE_LOST 1
/* IO functions */
void nrf24_setupPins();
void nrf24_ce_digitalWrite(uint8_t state);
void nrf24_csn_digitalWrite(uint8_t state);
void nrf24_sck_digitalWrite(uint8_t state);
void nrf24_mosi_digitalWrite(uint8_t state);
uint8_t nrf24_miso_digitalRead();
/* adjustment functions */
void nrf24_init();
void nrf24_rx_address(uint8_t* adr);
void nrf24_tx_address(uint8_t* adr);
void nrf24_config(uint8_t channel, uint8_t pay_length);
/* state check functions */
uint8_t nrf24_dataReady();
uint8_t nrf24_isSending();
uint8_t nrf24_getStatus();
uint8_t nrf24_rxFifoEmpty();
/* core TX / RX functions */
void nrf24_send(uint8_t* value);
void nrf24_getData(uint8_t* data);
/* use in dynamic length mode */
uint8_t nrf24_payloadLength();
/* post transmission analysis */
uint8_t nrf24_lastMessageStatus();
uint8_t nrf24_retransmissionCount();
/* Returns the payload length */
uint8_t nrf24_payload_length();
/* power management */
void nrf24_powerUpRx();
void nrf24_powerUpTx();
void nrf24_powerDown();
/* low level interface ... */
uint8_t spi_transfer(uint8_t tx);
void nrf24_transmitSync(uint8_t* dataout,uint8_t len);
void nrf24_transferSync(uint8_t* dataout,uint8_t* datain,uint8_t len);
void nrf24_configRegister(uint8_t reg, uint8_t value);
void nrf24_readRegister(uint8_t reg, uint8_t* value, uint8_t len);
void nrf24_writeRegister(uint8_t reg, uint8_t* value, uint8_t len);
/* -------------------------------------------------------------------------- */
/* You should implement the platform spesific functions in your code */
/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */
/* In this function you should do the following things:
* - Set MISO pin input
* - Set MOSI pin output
* - Set SCK pin output
* - Set CSN pin output
* - Set CE pin output */
/* -------------------------------------------------------------------------- */
extern void nrf24_setupPins();
/* -------------------------------------------------------------------------- */
/* nrf24 CE pin control function
* - state:1 => Pin HIGH
* - state:0 => Pin LOW */
/* -------------------------------------------------------------------------- */
extern void nrf24_ce_digitalWrite(uint8_t state);
/* -------------------------------------------------------------------------- */
/* nrf24 CE pin control function
* - state:1 => Pin HIGH
* - state:0 => Pin LOW */
/* -------------------------------------------------------------------------- */
extern void nrf24_csn_digitalWrite(uint8_t state);
/* -------------------------------------------------------------------------- */
/* nrf24 SCK pin control function
* - state:1 => Pin HIGH
* - state:0 => Pin LOW */
/* -------------------------------------------------------------------------- */
extern void nrf24_sck_digitalWrite(uint8_t state);
/* -------------------------------------------------------------------------- */
/* nrf24 MOSI pin control function
* - state:1 => Pin HIGH
* - state:0 => Pin LOW */
/* -------------------------------------------------------------------------- */
extern void nrf24_mosi_digitalWrite(uint8_t state);
/* -------------------------------------------------------------------------- */
/* nrf24 MISO pin read function
/* - returns: Non-zero if the pin is high */
/* -------------------------------------------------------------------------- */
extern uint8_t nrf24_miso_digitalRead();
#endif