kopia lustrzana https://github.com/micropython/micropython
101 wiersze
2.8 KiB
Python
101 wiersze
2.8 KiB
Python
"""Test for nrf24l01 module."""
|
|
|
|
import struct
|
|
import pyb
|
|
from pyb import Pin, SPI
|
|
from nrf24l01 import NRF24L01
|
|
|
|
pipes = (b'\xf0\xf0\xf0\xf0\xe1', b'\xf0\xf0\xf0\xf0\xd2')
|
|
|
|
def master():
|
|
nrf = NRF24L01(SPI(2), Pin('Y5'), Pin('Y4'), payload_size=8)
|
|
|
|
nrf.open_tx_pipe(pipes[0])
|
|
nrf.open_rx_pipe(1, pipes[1])
|
|
nrf.start_listening()
|
|
|
|
num_needed = 16
|
|
num_successes = 0
|
|
num_failures = 0
|
|
led_state = 0
|
|
|
|
print('NRF24L01 master mode, sending %d packets...' % num_needed)
|
|
|
|
while num_successes < num_needed and num_failures < num_needed:
|
|
# stop listening and send packet
|
|
nrf.stop_listening()
|
|
millis = pyb.millis()
|
|
led_state = max(1, (led_state << 1) & 0x0f)
|
|
print('sending:', millis, led_state)
|
|
try:
|
|
nrf.send(struct.pack('ii', millis, led_state))
|
|
except OSError:
|
|
pass
|
|
|
|
# start listening again
|
|
nrf.start_listening()
|
|
|
|
# wait for response, with 250ms timeout
|
|
start_time = pyb.millis()
|
|
timeout = False
|
|
while not nrf.any() and not timeout:
|
|
if pyb.elapsed_millis(start_time) > 250:
|
|
timeout = True
|
|
|
|
if timeout:
|
|
print('failed, response timed out')
|
|
num_failures += 1
|
|
|
|
else:
|
|
# recv packet
|
|
got_millis, = struct.unpack('i', nrf.recv())
|
|
|
|
# print response and round-trip delay
|
|
print('got response:', got_millis, '(delay', pyb.millis() - got_millis, 'ms)')
|
|
num_successes += 1
|
|
|
|
# delay then loop
|
|
pyb.delay(250)
|
|
|
|
print('master finished sending; successes=%d, failures=%d' % (num_successes, num_failures))
|
|
|
|
def slave():
|
|
nrf = NRF24L01(SPI(2), Pin('Y5'), Pin('Y4'), payload_size=8)
|
|
|
|
nrf.open_tx_pipe(pipes[1])
|
|
nrf.open_rx_pipe(1, pipes[0])
|
|
nrf.start_listening()
|
|
|
|
print('NRF24L01 slave mode, waiting for packets... (ctrl-C to stop)')
|
|
|
|
while True:
|
|
pyb.wfi()
|
|
if nrf.any():
|
|
while nrf.any():
|
|
buf = nrf.recv()
|
|
millis, led_state = struct.unpack('ii', buf)
|
|
print('received:', millis, led_state)
|
|
for i in range(4):
|
|
if led_state & (1 << i):
|
|
pyb.LED(i + 1).on()
|
|
else:
|
|
pyb.LED(i + 1).off()
|
|
pyb.delay(15)
|
|
|
|
nrf.stop_listening()
|
|
try:
|
|
nrf.send(struct.pack('i', millis))
|
|
except OSError:
|
|
pass
|
|
print('sent response')
|
|
nrf.start_listening()
|
|
|
|
print('NRF24L01 test module loaded')
|
|
print('NRF24L01 pinout for test:')
|
|
print(' CE on Y4')
|
|
print(' CSN on Y5')
|
|
print(' SCK on Y6')
|
|
print(' MISO on Y7')
|
|
print(' MOSI on Y8')
|
|
print('run nrf24l01test.slave() on slave, then nrf24l01test.master() on master')
|