Coil quantity specification does not work about micropython-modbus HOT 7 CLOSED

And only the first coil value is correct, the others always appears as false.

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And only the first coil value is correct, the others always appears as false.

That's correct @javiercp64 for default definitions example because the len is 1 ("len": 1) for the value 1 ("val": 1), so others bits that are not set, are 0 (False) by default.

If you change the definitions to set others bit values you will receive True if you set as 1. See example below with new definitions - look at "val":

register_definitions = { "COILS": { "EXAMPLE_COIL": { "register": 123, "len": 3, "val": [1, 0, 1] } },

Output:

>>> host.read_coils(slave_addr=10, starting_addr=123, coil_qty=3)
[True, False, True, False, False, False, False, False]
>>>

However, the write multiple COILS has a bug, as reported on the PR #10, in this section, item 2.

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As detected by @brainelectronics on the thread #10 (comment) is correct to return always multiple of 8 bits. So is correct when coil_qty=1 returning the 8 bits/elements. But the bug still exists, once that coil_qty=20 is returning just first 8 bits.

host.read_coils(slave_addr=10, starting_addr=123, coil_qty=1)
[True, False, False, False, False, False, False, False]   # CORRECT: "coil_qty=1"  and showed 8 bits (multiple of 8).
host.read_coils(slave_addr=10, starting_addr=123, coil_qty=20)
[True, False, False, False, False, False, False, False]   # NOT CORRECT: "coil_qty=20" showing only first 8 bits.

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@brainelectronics
Check Implementation to follow requirement of returning multiple coils as requested, see http://www.simplymodbus.ca/FC01.htm

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develop...ShaunL36:micropython-modbus:develop

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related to #25

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220d3b9

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