* Apply changes for Bekens HAL_Delay_us() as proposed in #1579 by @rpv-tomsk
Add TEST command to simply test usleep on a given pin
tested on BK7231N to work with both drivers (I am aware of) using HAL_Delay_us
DS1820 and DHT (tested on DHT11 only)
Timing on BK7231N looks really good with this driver, at least for usleep > 6 its allways 2 us more:
tested read by analyzer
500 502
200 202
100 102
50 52
20 22
10 12
6 8
4 7
Now it's time to test on other Beken platforms, too
* Not working on BK7238 - trying to remove special case for lower usleep, since times are way to small here
* still not working on BK7238 - usleep ok fur > 50 , will not be below 30us according to my tests
so try to use the other approach for 7238, too
* No success on BK7238 - trying once again to use "usleep()" to find a factor with analyzer.
* try factor 6 for BK7238 (HAL_Dely_us(x) -> usleep(6*x))
* Testing factor 6.4 for BK7238
* Fixing BK7252 build not working, simply use original for code
* Restore original code for BK7252
* Change timing for BK7525
* Next try to adjust factors for BK7525
* fix typo
* Add adjustment for powersave on BK7238
* Update obk_config.h - disable ENABLE_DS1820_TEST_US
* stub
* clear
* clear upo
* one more test
* split
* fx
* Update drv_led_shared.c
* step
* split
* Update drv_leds_shared.c
* Update selftest_ws2812b.c
* port
* dmx
* DMX
* s
* with test
* fix
* fx
* ChType_Ph test and RGBW test
* ddp formats unfinished
* Update selftest_ws2812b.c
* Update selftest_hass_discovery_ext.c
* fxes
