tip/MIGRATION

		Migration from wiringPi to PIGPIO.
		==================================

WiringPi is unmaintained and replaced by pigpio. This will need large parts
of thermferm to be rewritten. It is also a good moment to replace the current
server protocol with json data and start sending data changes over
websockets.

Some parts of the code can make use of direct kernel support, since kernel 4
there are lots of new modules. Fact is that thermferm is started in 2014,
that is 10 years ago.

The current devices model is not very practical. We need to separate the parts
that don't need gpio out of it. All one-wire devices need their own driver
thread. Is done.


	Current threads.
	----------------

These are the current running threads.
1. my_one_wire_loop.
2. my_devices_loop.
3. my_server_loop.
4. my_panel_loop.
5. my_simulator_loop (if enabled).


After one day:

root      9795     1  9795  3    7 May04 ?        00:29:27 /usr/bin/thermferm	Total
root      9795     1  9796  0    7 May04 ?        00:00:09 /usr/bin/thermferm	mqtt ?
root      9795     1  9797  0    7 May04 ?        00:00:01 /usr/bin/thermferm	Websocket
root      9795     1  9798  2    7 May04 ?        00:19:09 /usr/bin/thermferm	my_one_wire_loop
root      9795     1  9799  0    7 May04 ?        00:04:43 /usr/bin/thermferm	my_devices_loop started
root      9795     1  9800  0    7 May04 ?        00:00:00 /usr/bin/thermferm	my_server_loop
root      9795     1  9801  0    7 May04 ?        00:04:45 /usr/bin/thermferm	my_panel_loop


	Steps to do.
	------------

Try to read all temperature sensors at once. The kernel supports this now.
The devices thread needs to use the collected temperatures.
Read all ds2413 devices from sys/bus/w1. If output bits are set different
then send output values.


Add pigpio library and make it testable by the configure script.

To see each thread usage: ps -eLf | grep thermferm