# sr_passive.py Test of synchronous comms library. Passive end.
# The MIT License (MIT)
#
# Copyright (c) 2016 Peter Hinch
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
# Run on ESP8266
import uasyncio as asyncio
from syncom import SynCom
from machine import Pin, freq
import gc
async def passive_task(chan):
while True:
obj = await chan.await_obj()
if obj is not None: # Ignore timeouts
# print('passive received: ', obj)
obj[2] += 1 # modify object and send it back
chan.send(obj)
async def heartbeat():
led = Pin(2, Pin.OUT)
while True:
await asyncio.sleep_ms(500)
led(not led())
gc.collect()
def test():
freq(160000000)
dout = Pin(14, Pin.OUT, value = 0) # Define pins
ckout = Pin(15, Pin.OUT, value = 0) # clocks must be initialised to zero.
din = Pin(13, Pin.IN)
ckin = Pin(12, Pin.IN)
channel = SynCom(True, ckin, ckout, din, dout)
loop = asyncio.get_event_loop()
loop.create_task(heartbeat())
loop.create_task(channel.start(passive_task))
try:
loop.run_forever()
except KeyboardInterrupt:
pass
finally:
ckout(0)
test()
