nrf24 between BananaPi and Arduino

[archont94]

Hi, I install fork of RF24 for BananaPi. It looks like all is fine (configuration at least). I run this code on BananaPi:

#!/usr/bin/python
from nrf24 import NRF24
import time

pipes = [[0xe7, 0xe7, 0xe7, 0xe7, 0xe7], [0xc2, 0xc2, 0xc2, 0xc2, 0xc2]]

radio = NRF24()
radio.begin(0, 0, 23, 24) # board GPIO.4 == GPIO 23 on 'gpio readall' as CE, board GPIO.5 ==  GPIO 24 on 'gpio readall' as IRQ

radio.setRetries(15,15)

radio.setPayloadSize(8)
radio.setChannel(0x60)
radio.setDataRate(NRF24.BR_250KBPS)
radio.setPALevel(NRF24.PA_MAX)

radio.setAutoAck(1)

radio.openWritingPipe(pipes[0])
radio.openReadingPipe(1, pipes[1])

radio.startListening()
radio.stopListening()

radio.printDetails()

radio.startListening()

while True:
    pipe = [0]
    while not radio.available(pipe, True):
        time.sleep(1000/1000000.0)

    recv_buffer = []
    radio.read(recv_buffer)

    print recv_buffer

And on Arduino I have

#include <SPI.h>
#include "nRF24L01.h"
#include "RF24.h"

RF24 radio(9,10);
const uint64_t pipes[2] = { 0xE7E7E7E7E7, 0xC2C2C2C2C2 };

void setup(void)
{
  Serial.begin(57600);
  printf_begin();

  radio.begin();

  radio.setRetries(15,15);

  radio.setPayloadSize(8);
  radio.setChannel(0x60);
  radio.setDataRate(RF24_250KBPS);
  radio.setPALevel(RF24_PA_MAX);

  radio.openWritingPipe(pipes[1]);
  radio.openReadingPipe(1, pipes[0]);

  radio.startListening();
  radio.stopListening();

  radio.printDetails();

  radio.openWritingPipe(pipes[1]);
  radio.openReadingPipe(1, pipes[0]);
}

void loop(void)
{
  const char message[] = "PING";
  radio.write(&message, sizeof(message));
  delay(1000);  
}

Communication dont work properly. This is what Arduino print:

STATUS           = 0x0e RX_DR=0 TX_DS=0 MAX_RT=0 RX_P_NO=7 TX_FULL=0
RX_ADDR_P0-1     = 0xc2c2c2c2c2 0xe7e7e7e7e7
RX_ADDR_P2-5     = 0xc3 0xc4 0xc5 0xc6
TX_ADDR          = 0xc2c2c2c2c2
RX_PW_P0-6       = 0x08 0x08 0x00 0x00 0x00 0x00
EN_AA            = 0x3f
EN_RXADDR        = 0x03
RF_CH            = 0x60
RF_SETUP         = 0x27
CONFIG           = 0x0f
DYNPD/FEATURE    = 0x00 0x00
Data Rate        = 250KBPS
Model            = nRF24L01+
CRC Length       = 16 bits
PA Power         = PA_HIGH

And what I see on BananaPi:

BAPI: revision(1)
STATUS          = 0x0e RX_DR=0 TX_DS=0 MAX_RT=0 RX_P_NO=7 TX_FULL=0
RX_ADDR_P0-1    = 0xe7e7e7e7e7 0xc2c2c2c2c2
RX_ADDR_P2-5    = 0xc3 0xc4 0xc5 0xc6
TX_ADDR         = 0xe7e7e7e7e7
RX_PW_P0-6      = 0x08 0x08 0x00 0x00 0x00 0x00
EN_AA           = 0x3f
EN_RXADDR       = 0x03
RF_CH           = 0x60
RF_SETUP        = 0x26
SETUP_AW        = 0x03
OBSERVE_TX      = 0x00
CONFIG          = 0x0e
FIFO_STATUS     = 0x11
DYNPD           = 0x00
FEATURE         = 0x00
Data Rate       = 250KBPS
Model           = nRF24l01+
CRC Length      = 16 bits
PA Power        = PA_MAX
[80, 73, 78, 71, 0, 0, 0, 0]

Last line ([80, 73, 78, 71, 0, 0, 0, 0]) is repeated after each reset of Arduino - this is text which I want to send - INT to ASCII gives "PING", but only once after reset. Any ideas?

EDIT Somehow adding

radio.startListening()

before

radio.write(&message, sizeof(message));

fix problem. But why it happens?