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/****************************************************************************
* include/nuttx/drivers/wireless/nrf24l01.h
*
* Copyright (C) 2013 Laurent Latil
* Author: Laurent Latil <laurent@latil.nom.fr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#ifndef __DRIVERS_WIRELESS_NRF24L01_H
#define __DRIVERS_WIRELESS_NRF24L01_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/spi.h>
#include <nuttx/irq.h>
#include <nuttx/wireless/wireless.h>
#include <stdint.h>
#include <stdbool.h>
/****************************************************************************
* Pre-Processor Declarations
****************************************************************************/
/* nRF24L01 hardware definitions */
/* Commands */
#define NRF24L01_R_REGISTER 0x00
#define NRF24L01_W_REGISTER 0x20
#define NRF24L01_R_RX_PAYLOAD 0x61
#define NRF24L01_W_TX_PAYLOAD 0xA0
#define NRF24L01_FLUSH_TX 0xE1
#define NRF24L01_FLUSH_RX 0xE2
#define NRF24L01_REUSE_TX_PL 0xE3
#define NRF24L01_ACTIVATE 0x50
#define NRF24L01_R_RX_PL_WID 0x60
#define NRF24L01_W_TX_PAYLOAD_NOACK 0xB0
#define NRF24L01_W_ACK_PAYLOAD 0xA8
#define NRF24L01_NOP 0xFF
/* Registers */
#define NRF24L01_CONFIG 0x00
#define NRF24L01_EN_AA 0x01
#define NRF24L01_EN_RXADDR 0x02
#define NRF24L01_SETUP_AW 0x03
#define NRF24L01_SETUP_RETR 0x04
#define NRF24L01_RF_CH 0x05
#define NRF24L01_RF_SETUP 0x06
#define NRF24L01_STATUS 0x07
#define NRF24L01_OBSERVE_TX 0x08
#define NRF24L01_CD 0x09
#define NRF24L01_RX_ADDR_P0 0x0A
#define NRF24L01_RX_ADDR_P1 0x0B
#define NRF24L01_RX_ADDR_P2 0x0C
#define NRF24L01_RX_ADDR_P3 0x0D
#define NRF24L01_RX_ADDR_P4 0x0E
#define NRF24L01_RX_ADDR_P5 0x0F
#define NRF24L01_TX_ADDR 0x10
#define NRF24L01_RX_PW_P0 0x11
#define NRF24L01_RX_PW_P1 0x12
#define NRF24L01_RX_PW_P2 0x13
#define NRF24L01_RX_PW_P3 0x14
#define NRF24L01_RX_PW_P4 0x15
#define NRF24L01_RX_PW_P5 0x16
#define NRF24L01_FIFO_STATUS 0x17
#define NRF24L01_DYNPD 0x1C
#define NRF24L01_FEATURE 0x1D
/* STATUS register definitions */
#define NRF24L01_RX_DR (1 << 6)
#define NRF24L01_TX_DS (1 << 5)
#define NRF24L01_MAX_RT (1 << 4)
#define NRF24L01_RX_P_NO_SHIFT 1
#define NRF24L01_RX_P_NO_MASK (7 << NRF24L01_RX_P_NO_SHIFT)
#define NRF24L01_STAT_TX_FULL (1 << 0)
/* CONFIG register definitions */
#define NRF24L01_MASK_RX_DR (1 << 6)
#define NRF24L01_MASK_TX_DS (1 << 5)
#define NRF24L01_MASK_MAX_RT (1 << 4)
#define NRF24L01_EN_CRC (1 << 3)
#define NRF24L01_CRCO (1 << 2)
#define NRF24L01_PWR_UP (1 << 1)
#define NRF24L01_PRIM_RX (1 << 0)
/* RF_SETUP register definition */
#define NRF24L01_CONT_WAVE (1 << 7)
#define NRF24L01_RF_DR_LOW (1 << 5)
#define NRF24L01_PLL_LOCK (1 << 4)
#define NRF24L01_RF_DR_HIGH (1 << 3)
#define NRF24L01_RF_PWR_SHIFT 1
#define NRF24L01_RF_PWR_MASK (3 << NRF24L01_RF_PWR_SHIFT)
/* FIFO STATUS register definitions */
#define NRF24L01_TX_REUSE (1 << 6)
#define NRF24L01_TX_FULL (1 << 5)
#define NRF24L01_TX_EMPTY (1 << 4)
#define NRF24L01_RX_FULL (1 << 1)
#define NRF24L01_RX_EMPTY (1 << 0)
/* SETUP_RETR */
#define NRF24L01_ARC_SHIFT 0
#define NRF24L01_ARC_MASK (0xF << NRF24L01_ARC_SHIFT)
#define NRF24L01_ARD_SHIFT 4
#define NRF24L01_ARD_MASK (0xF << NRF24L01_ARD_SHIFT)
/* OBSERVE_TX register definitions */
#define NRF24L01_PLOS_CNT_SHIFT 4
#define NRF24L01_PLOS_CNT_MASK (0xF << NRF24L01_PLOS_CNT_SHIFT)
#define NRF24L01_ARC_CNT_SHIFT 0
#define NRF24L01_ARC_CNT_MASK (0xF << NRF24L01_ARC_CNT_SHIFT)
#define NRF24L01_RX_P_NO_SHIFT 1
#define NRF24L01_RX_P_NO_MASK (7 << NRF24L01_RX_P_NO_SHIFT)
/* FEATURE register definitions */
#define NRF24L01_EN_DPL (1 << 2)
#define NRF24L01_EN_ACK_PAY (1 << 1)
#define NRF24L01_EN_DYN_ACK (1 << 0)
/****************************************************************************
* Public Data Types
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
# define EXTERN extern "C"
extern "C"
{
#else
# define EXTERN extern
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __DRIVERS_WIRELESS_NRF24L01_H */
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