Sat, 23 Mar 2024 20:28:17 +0100
Work to move dht userspace code to kernel module.
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 chaanges 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. Current threads. ---------------- These are the current running threads. 1. my_devices_loop. 2. my_server_loop. 3. my_panel_loop. 4. my_simulator_loop (if enabled). Steps to do. ------------ Write a new thread for the one-wire devices. Make it a dynamic table. The old device table is still needed to tie devices to fermenters. 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. Create tables for ds28b20 and ds2413. Simulated and real sensors should share these tables. Add pigpio library and make it testable by the configure script.