# E14a - Program receptie mesaj prin cluster
# cu Pico 2 si nRF24L01.
# Conexiuni pini fizic:
# SCK-4, MOSI-5, MISO-6, CSN-7, CE-11
# La receptia unui mesaj se activeaza de 2 ori LED -ul de pe Pico 2.
#
from machine import Pin, SPI
from nrf24l01 import NRF24L01
import time

spi = SPI(0, sck=Pin(2), mosi=Pin(3), miso=Pin(4))
csn = Pin(5, mode=Pin.OUT, value=1)
ce = Pin(8, mode=Pin.OUT, value=0)
led = machine.Pin("LED", machine.Pin.OUT)  #
#led = machine.Pin(25, machine.Pin.OUT)    # varianta Pico clasic
led.off()
nrf = NRF24L01(spi, csn, ce, payload_size=32)

nrf.open_rx_pipe(1, b"Pico1")   # denumire emitator

nrf.start_listening()

print("Astept mesaje de la Pico1")

while True:
    if nrf.any():
        led.on()          # semnalizare receptie cu 2 blink
        buf = nrf.recv()
        time.sleep(0.03)  # blink 1
        led.off()
        time.sleep(0.2)
        led.on()
        time.sleep(0.03)  # blink 2
        led.off()
        print("Am primit:  ", buf) # are 32 octeti
    time.sleep(0.1)