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https://github.com/pommi/python-itho-wpu.git
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feat(itho-wpu): cli arguments to run master/slave only + set slave timeout
--master-only allows to only run the I2C master functionality. --slave-only allows to only run the I2C slave functionality. The I2C slave functionality via the "set_callback" mechanism (--type callback) just executes the pigpio "event_callback()" function and waits for 2 seconds for a response. The amount of seconds can now be configured via --slave-timeout.
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33
itho-wpu.py
33
itho-wpu.py
@ -34,6 +34,10 @@ def parse_args():
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parser.add_argument('--loglevel', nargs='?',
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choices=["debug", "info", "warning", "error", "critical"],
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help="Loglevel")
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parser.add_argument('--master-only', action='store_true', help="Only run I2C master")
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parser.add_argument('--slave-only', action='store_true', help="Only run I2C slave")
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parser.add_argument('--slave-timeout', nargs='?', type=int, default=2,
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help="Slave timeout in seconds.")
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args = parser.parse_args()
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return args
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@ -47,11 +51,12 @@ class I2CSlave():
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logger.error("not pi.connected")
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return
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def set_callback(self, q):
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def set_callback(self, q, timeout):
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logger.debug("set_callback()")
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e = self.pi.event_callback(pigpio.EVENT_BSC, self.callback)
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self.pi.bsc_i2c(self.address)
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time.sleep(2)
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logger.debug(f"Waiting {timeout}s for activity")
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time.sleep(timeout)
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e.cancel()
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self.pi.bsc_i2c(0) # Disable BSC peripheral
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self.pi.stop()
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@ -117,18 +122,20 @@ if __name__ == "__main__":
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q = queue.Queue()
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slave = I2CSlave(address=0x40)
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if args.type == 'callback':
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slave_thread = threading.Thread(target=slave.set_callback, args=[q])
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elif args.type == 'wait':
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slave_thread = threading.Thread(target=slave.wait, args=[q])
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slave_thread.start()
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if not args.master_only:
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slave = I2CSlave(address=0x40)
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if args.type == 'callback':
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slave_thread = threading.Thread(target=slave.set_callback, args=[q, args.slave_timeout])
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elif args.type == 'wait':
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slave_thread = threading.Thread(target=slave.wait, args=[q])
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slave_thread.start()
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master = I2CMaster(address=0x41, bus=1)
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if args.action:
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master.execute_action(args.action)
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master.close()
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if not args.slave_only:
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master = I2CMaster(address=0x41, bus=1)
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if args.action:
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master.execute_action(args.action)
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master.close()
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if args.type == 'wait':
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if args.type == 'wait' and not args.master_only:
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result = q.get()
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logger.info(f"Response: {result}")
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