hal_nrf_hw.c

NRf24l01 代码

/* Copyright (c) 2006 Nordic Semiconductor. All Rights Reserved.
 *
 * The information contained herein is confidential property of 
 * Nordic Semiconductor. The use, copying, transfer or disclosure of such
 * information is prohibited except by express written agreement with 
 * Nordic Semiconductor.
 */

/** @file
 * Implementation of #hal_nrf_rw.
 * #hal_nrf_rw is an SPI function which is hardware dependent. This file
 * contains an implementation for nRF24LU1.
 */

#include <Nordic\reg24lu1.h>
#include <stdint.h>
#include "hal_nrf.h"

uint8_t hal_nrf_rw(uint8_t value)
{
  RFDAT = value;
  RFSPIF = 0;     // ! IMPORTANT ! Clear RF SPI ready flag
                  // after data written to RFDAT..
  while(!RFSPIF); // wait for byte transfer finished
    ;
  return RFDAT;   // return SPI read value
}