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//Program to 



//Program to Rx

/* Copyright (c) 2009 Nordic Semiconductor. All Rights Reserved.

 *

 * The information contained herein is confidential 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: 2211 $

 */


/** @file

 * @brief Enhanced ShockBurst Primary Receiver example

 * @defgroup esb_prx_example Enhanced ShockBurst Primary Receiver (PRX) example

 * @{

 * @ingroup nrf_examples

 *

 * @brief This example monitors for data and writes the first byte (byte 0) of the

 * received payloads to P0.

 *

 * The example shows the minimum required setup for receiving packets from a

 * primary transmitter (PTX) device.

 *

 * The following default radio parameters are being used:

 * - RF channel 2

 * - 2 Mbps data rate

 * - RX address 0xE7E7E7E7E7 (pipe 0) and 0xC2C2C2C2C2 (pipe 1)

 * - 1 byte CRC

 *

 * The project @ref esb_ptx_example can be used as a counterpart for transmitting the data.

 *

*/



#include "nrf24le1.h" // I/O header file for NRF24LE1

#include "hal_clk.h"  // library containing clock functions


#include  // standard integers library

#include "hal_nrf.h" // library containing wireless communication functions


// Global variables

uint8_t payload[3]; // payload to be received


// main function

void main()

{


#ifdef MCU_NRF24LE1

  while(hal_clk_get_16m_source() != HAL_CLK_XOSC16M)

  {

    // Wait until 16 MHz crystal oscillator is running

  }

#endif


  #ifdef MCU_NRF24LU1P

  // Enable radio SPI

  RFCTL = 0x10;

  #endif


  // Set P0 as output

  P0DIR = 0;


  // Enable the radio clock

  RFCKEN = 1;


  // Enable RF interrupt

  RF = 1;

  // Enable global interrupt

  EA = 1;


  // Configure radio as primary receiver (PTX)

  hal_nrf_set_operation_mode(HAL_NRF_PRX);


  // Set payload width to 3 bytes

  hal_nrf_set_rx_payload_width((int)HAL_NRF_PIPE0, 3);


  // Power up radio

  hal_nrf_set_power_mode(HAL_NRF_PWR_UP);


  // Enable receiver

  CE_HIGH();


      // infinite loop

  for(;;){}

}


// Radio interrupt

NRF_ISR()

{

  uint8_t irq_flags;


  // Read and clear IRQ flags from radio

  irq_flags = hal_nrf_get_clear_irq_flags();


  // If data received

  if((irq_flags & (1<<(uint8_t)HAL_NRF_RX_DR)) > 0)

  {

    // Read payload

    while(!hal_nrf_rx_fifo_empty())

    {

      hal_nrf_read_rx_payload(payload);

    }


    // Write received payload[0] to port 0

    P0 = payload[0];

  }

}

/** @} */



//Program to Tx


/* 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

 * WARRENTY of ANY KIND is provided. This heading must NOT be removed from

 * the file.

 *

 * $LastChangedRevision: 2513 $

 */

/** @file

 * @brief Enhanced ShockBurst Primary Transmitter example

 * @defgroup esb_ptx_example Enhanced ShockBurst Primary Transmitter (PTX) example

 * @{

 * @ingroup nrf_examples

 *

 * @brief This example sends packets continuously. The contents of P0 are

 * sent in the first payload byte (byte 0).

 *

 * The example shows the minimum required setup for transmitting packets to a

 * primary receiver (PRX) device.

 *

 * The following default radio parameters are being used:

 * - RF channel 2

 * - 2 Mbps data rate

 * - TX address 0xE7E7E7E7E7

 * - 1 byte CRC

 *

 * The project @ref esb_prx_example can be used as a counterpart for receiving the data.

 *

*/



#include "nrf24le1.h" // I/O header file for NRF24LE1

#include "hal_clk.h"  // library containing clock functions


#include  // standard integers library

#include "hal_nrf.h" // library containing wireless communication functions


#include  // standard boolean library


// Global variables

static bool volatile radio_busy;


// main function

void main(void)

{

  uint8_t payload[3]; // payload to be transmitted


  #ifdef MCU_NRF24LE1

  while(hal_clk_get_16m_source() != HAL_CLK_XOSC16M)

  {

    // Wait until 16 MHz crystal oscillator is running

  }

  #endif


  #ifdef MCU_NRF24LU1P

  // Enable radio SPI

  RFCTL = 0x10U;

  #endif


  // Enable the radio clock

  RFCKEN = 1U;


  // Enable RF interrupt

  RF = 1U;


  // Enable global interrupt

  EA = 1U;


  // Power up radio

  hal_nrf_set_power_mode(HAL_NRF_PWR_UP);


   // infinite loop

  for(;;)

  {

    // Put P0 contents in payload[0]

    payload[0] = ~P0; // write compliment of Port0


    // Write payload to radio TX FIFO

    hal_nrf_write_tx_payload(payload, 3U);


    // Toggle radio CE signal to start transmission

    CE_PULSE();


    radio_busy = true;

    // Wait for radio operation to finish

    while (radio_busy)

    {

    }

  }

}


// Radio interrupt

NRF_ISR()

{

  uint8_t irq_flags;


  // Read and clear IRQ flags from radio

  irq_flags = hal_nrf_get_clear_irq_flags();


  switch(irq_flags)

  {

    // Transmission success

    case (1 << (uint8_t)HAL_NRF_TX_DS):

      radio_busy = false;

      // Data has been sent

      break;

    // Transmission failed (maximum re-transmits)

    case (1 << (uint8_t)HAL_NRF_MAX_RT):

      // When a MAX_RT interrupt occurs the TX payload will not be removed from the TX FIFO.

      // If the packet is to be discarded this must be done manually by flushing the TX FIFO.

      // Alternatively, CE_PULSE() can be called re-starting transmission of the payload.

      // (Will only be possible after the radio irq flags are cleared)

      hal_nrf_flush_tx();

      radio_busy = false;

      break;

    default:

      break;

  }

}

/** @} */
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