application_esb.c

NRf24l01 代码

/* Copyright (c) 2007 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
 * WARRENTY of ANY KIND is provided. This heading must NOT be removed from
 * the file.
 *
 * $LastChangedRevision: 2311 $
 */ 

/** @ingroup ESB 
 * @file
 * Application to show the functionality of the Enhanced ShockBurst mode. 
 *
 * @b PTX @b mode: 
 * - Sends a packet aprox every 100ms
 * - Accepts user interaction at Button 1:
 *   - Not pressed: Send @c 00
 *   - Pressed: Send @c 10
 * - If a ACK was recieved, blink LED2
 * - If a ACK was not recieved, blink LED3
 *
 * @b PRX @b mode:
 * - Constantly checks for data
 * - If no packet recieved in aprox 100ms, turn off all leds
 * - If a packet is recieved, turn on lights according to packet content:
 *    - 0: LED1 off
 *    - 1: LED1 on
 *
 * @author Per Kristian Schanke
 *
 */

#include "hal_nrf.h"
#include "system.h"
#include "radio.h"
#include "application_esb.h"
#include "target_includes.h"

/** The data to send in ShockBurst mode */
static xdata uint8_t pload_esb[RF_PAYLOAD_LENGTH];

void device_ptx_mode_esb(void)
{
  while(true)
  {
    // Wait til the packet is sent
    do {
      radio_irq ();
    } while((radio_get_status ()) == RF_BUSY);

    // Blink LED2 if ACK is recieved, LED3 if not
    if (((radio_get_status ()) == RF_TX_DS))
    {
      LED2_BLINK();
    }
    else
    {
      LED3_BLINK();
    }

    // Sleep 100ms
    start_timer(100);
    wait_for_timer();

    // Set up the payload according to the input button 1
    pload_esb[0] = 0;

    if(B1_PRESSED())
    {
      pload_esb[0] = 1;
    }

    //Send the packet
    radio_send_packet(pload_esb, RF_PAYLOAD_LENGTH);           
  }
}

void device_prx_mode_esb(void)
{
  CE_HIGH();        // Set Chip Enable (CE) pin high to enable reciever

  while(true)
  { 
    start_timer(110);

    // Run until either 110ms has lapsed 
    // OR there is data on the radio
    do
    {
      radio_irq ();
    } while ((radio_get_status () == RF_IDLE) && !timer_done());
    
    if ((radio_get_status ()) == RF_RX_DR)
    {
      // Get the payload from the PTX and set LED1
      if (radio_get_pload_byte (0) == 1)
      {
        LED1_ON();
      }
      else
      {
        LED1_OFF();
      }
    }
    else
    {
      LED1_OFF();
    }

    // Set radio status to idle
    radio_set_status (RF_IDLE);
  }
}