Fix for broken temperature regulation in Indi-qhy

[dirkschwarze]

Fix contains 3 changes to file qhy_ccd.cpp:

1. Reduce temp_threshold.
2. Continue to read temperature, even if IPS_OK, to detect drift...
3. Restart regulation if drift causes to leave the threshold area.

[knro]

So QHY cameras work in Auto mode and manual mode.. this change caters to both? Manual you just set PWM at a specific value regardless of temperature. While auto you set the temperature and let the driver adjusts the PWM accordingly.

[dirkschwarze]

Hello Jasem, If you press on „cooler off“ in EKOs, the cooler is turned off with PWM going to 0. In the INDI Control Panel, you can switch to manual and then enter a PWM (Percent) Value. Directly entering a value, clicking on „set" and it switches to manual automatically does not work, but I do not know if it ever did. Regards Dirk Dirk Schwarze dschwarze@me.com mobile: +49 1570 1122 503

…

Am 30.12.2019 um 07:29 schrieb Jasem Mutlaq ***@***.***>: So QHY cameras work in Auto mode and manual mode.. this change caters to both? Manual you just set PWM at a specific value regardless of temperature. While auto you set the temperature and let the driver adjusts the PWM accordingly. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#42?email_source=notifications&email_token=AL57TN7VLUX57QWXNRJJJODQ3GIMLA5CNFSM4KBBJICKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEHZVLAA#issuecomment-569595264>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AL57TN3YOUSVDVMPZJ3CQ73Q3GIMLANCNFSM4KBBJICA>.

[knro]

Tested today and at least I don't see regressions with temperature control on QHY163