Hi Mick, by reading the /uncached value, you are causing a new conversion. Read only /latesttemp and it should work fine.
here is my test program, when I first tested simultaneous and pyownet: > import time > from pyownet import protocol > > op = protocol.proxy("razmaban",port=4304) > error = 0 > error_old = None > > > while True: > > op.write('/simultaneous/temperature', '1') > > time.sleep(1) # give the sensors time to convert their temps > > print '...' > > sensed = op.read('/28.676A20060000/latesttemp') > print sensed > > sensed = op.read('/28.DD5915020000/latesttemp') > print sensed Marty On 05.08.20 00:39, Mick Sulley wrote: > Running v3.2p3 on Raspberry Pi, I have set up some DS18B20 sensors on > a test system, all of them are powered, but simultaneous does not seem > to be working > > The code is below, when I run it the first loop takes 16 seconds then > it loops at 3 seconds for a while, then a 16 second etc. so it looks > like it does slow individual conversions, then uses cached values > until they expire, then another slow individual conversion, etc. Have > I got something wrong here? > > Thanks > > Mick > > #!/usr/bin/python3 > > # sensor_read.py > > import pyownet > import time > > def main(): > owp = pyownet.protocol.proxy() > while True: > start = time.time() > owp.write('/simultaneous/temperature', b'1') > time.sleep(1) > print('start of sensor_read.py') > sen_lst = ['Solar_Pnl_1A', 'Solar_Pnl_2A','Solar_Pnl_1B', > 'Pool_Sol_X', 'Pool_CH_X', 'DHW_Mid_Top', 'DHW_Mid_Btm', > 'DHW_Top','Temp5', 'Temp19', 'Temp20','Temp21', 'Temp22', 'Temp23', > 'Temp25', 'Temp26', 'Temp27', 'Temp29', 'Temp30'] > prop_lst = ['/type', '/power', '/latesttemp'] > for p in prop_lst: > print('%s ' %p, end = '') > print('') > for sen in sen_lst: > print('\n%s ' %sen, end = '') > for prop in prop_lst: > try: > print('%s ' %(owp.read('/uncached/' + sen + > prop).decode()), end = '') > except: > print('failed! ', end = '') > endt = time.time() - start > print('\nTime = %f' %endt) > > if __name__ == "__main__": > main() > > > > _______________________________________________ > Owfs-developers mailing list > Owfs-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/owfs-developers
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