NiceMCU XH-WB3S BK7238 Flashing, Testing, Pinout, Development, Porting

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#91 21386586 10 Jan 2025 15:10

insmod insmod

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Post #91
21386586 10 Jan 2025 15:10

>>21386560 Doesn't build. If replace SOC_BK7231 with SOC_BK7231U (like in LT), then it builds but throws a lot of undefined references, mainly bt or wolfssl ones.

Added after 39 [minutes]:

This sdk boots: https://github.com/tiancj/bdk_freertos
But, it doesn't support BK7238 and there is no config for T (but, it can be taken from LT source)
All in all, bk7231u is very rare, so i don't see a reason to port it.
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#92 21387784 11 Jan 2025 12:52

insmod insmod

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Post #92
21387784 11 Jan 2025 12:52

LibreTiny works, since it uses this sdk.
But, it can only be flashed with rbl, since setting bkcrypt_coeffs to zeroes throws this:
Code: text Expand Select all Copy to clipboard
|-- ValueError: non-hexadecimal number found in fromhex() arg at position 1 | |-- File "/root/.platformio/penv/.libretiny/lib/python3.11/site-packages/ltchiptool/soc/bk72xx/util/binary.py", line 36, in __init__

LT must be built as BK7231T with additional platformio_options:
Code: text Expand Select all Copy to clipboard
esphome: name: bk7231u-test friendly_name: bk7231u_test platformio_options: #board_build.bkcrypt_coeffs: 00000000000000000000000000000000 board_build.bkboot_version: "0.1.4-bk7231u" board_build.mcu: "bk7231u"

(board_build.mcu can probably be skipped, and bkboot_version can be set to anythigs but default for T "1.0.5-bk7231s", since that would include T-specific LT fix, which would prevent it from working)
#93 21387797 11 Jan 2025 13:01

p.kaczmarek2 p.kaczmarek2

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Post #93
21387797 11 Jan 2025 13:01

It would be nice if we could also support it, but it's not very popular as you said, so it depends how hard it would be for you.

I've merged the build defines PR, so please update your forks from main if you can. It should not be too problematic. And now I'm improving start commandline so it can take scripts to be run via scripting system. I'm also making W800 and W600 usable, I'll be merging my next PR soon.

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

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#94 21387799 11 Jan 2025 13:03

divadiow divadiow

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Post #94
21387799 11 Jan 2025 13:03

>>21387784 I also have these still.

https://www.elektroda.com/rtvforum/topic4071547.html

BK7231S. If you wanted to see if they are any different.
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#95 21387801 11 Jan 2025 13:04

insmod insmod

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Post #95
21387801 11 Jan 2025 13:04

>>21387797 Already done.
Additionally about BK7231N with new sdk - ota with powersave enabled crashes the device or something, it even ceases to respond to physical keys - reset is needed.
#96 21387808 11 Jan 2025 13:08

p.kaczmarek2 p.kaczmarek2

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Post #96
21387808 11 Jan 2025 13:08

I have cc8000 if that's needed. I could try to help somehow, altough I'm doing misc/W800 stuff now:

Which board will I be able to add there next? Hopefully NiceMCU:

Added after 45 [seconds]:

EDIT: Maybe we could just hardcode OTA to stop powersave.

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

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#97 21387813 11 Jan 2025 13:12

insmod insmod

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Post #97
21387813 11 Jan 2025 13:12

I also encountered a very interesing "conflict". My cc8000 mac and my BK7231N bulb are identical
Next is nicemcu.
If BK7231T rbl is flashed on my cc8000, then it would print one string and hang. Same problem was on LT, until i changed bkboot_version, so it wouldn't define CFG_SUPPORT_BOOTLOADER and compile boot_handlers_105_bk7231s.S

Edited, removed macs, and they are actually identical.
#98 21440151 15 Feb 2025 09:50

p.kaczmarek2 p.kaczmarek2

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Post #98
21440151 15 Feb 2025 09:50

Is DHT11 working on BK7238?

Tried both P15 and P22

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

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#99 21440156 15 Feb 2025 10:00

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Post #99
21440156 15 Feb 2025 10:00

>>21440151 Need to implement delay_us, because current n/t are for 120mhz.
BK7238 freq is 160mhz. Just take it from arduino, there is no need to guess how many nops are needed.
#100 21440247 15 Feb 2025 11:06

p.kaczmarek2 p.kaczmarek2

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Post #100
21440247 15 Feb 2025 11:06

I've did a naive fix and it works:
https://github.com/openshwprojects/OpenBK7231...mmit/e88875a458661aeb1d8e7184520e9e6319452266
I think I'd rather need to fix usleep itself but I had trouble finding it in:
https://github.com/NonPIayerCharacter/OpenBK7238_asdk
Or maybe it's just in binary blob?

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

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#101 21441011 16 Feb 2025 05:13

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Post #101
21441011 16 Feb 2025 05:13

>>21440247
I did post the code here earlier: https://www.elektroda.com/rtvforum/topic4092465.html#21302728
This can even be adapted to N.
Will require this first: https://github.com/NonPIayerCharacter/beken_f...ob/master/beken378/driver/calendar/calendar.c
Probably won't work for T though, driver is activated only for N and 7238: https://github.com/NonPIayerCharacter/beken_f...k/blob/master/beken378/driver/common/dd.c#L80

Added after 9 [hours] 17 [minutes]:

Backported from new sdk to N, delay works good.
https://github.com/openshwprojects/OpenBK7231T_App/pull/1538
Stopped using old gcc and disabled debug symbols, last release ota image is 497488 bytes, new one is 473136 bytes. 24 352 bytes less, so almost 24kb saved.
And since time_t in new gcc is 64bit, defined it in app to uint32_t. That prevented flashvars problem like in the initial bk7238 port.
#102 21441495 16 Feb 2025 09:55

p.kaczmarek2 p.kaczmarek2

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Post #102
21441495 16 Feb 2025 09:55

Thank you, any toughts on the accuracy of the new delay? From what I can tell, Calendar driver is a hardware timer, so it should be more precise, but again, there is an overhead for function calls etc, so I would guess it will be much better than previous delay version, but only for relatively longer delays?

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

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#103 21441514 16 Feb 2025 10:07

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Post #103
21441514 16 Feb 2025 10:07

>>21441495 I tried 5ms, 8ms, 10ms, 50ms and 100ms in ds1820 driver.
5ms reported 4ms without ps and 6 with ps. Everything else, tested without ps matched perfectly.
#104 21442351 16 Feb 2025 18:33

max4elektroda max4elektroda

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Post #104
21442351 16 Feb 2025 18:33

Hope it's o.k. if I report here and not in the Bluetooth Gateway/CR3L thread:

Sadly my tests with DS18B20 and the new timing from PR#1538 where not successful on Beken-N .
Delay is working "o.k." with the old delay(s), but not with "HAL_Delay_us()".

Even if I only use one delay (not the three short/medium/long) timing is working, but not with the new delay.

For testing I simply changed the #if to "PLATFORM_BK7231T" so it should use "HAL_Delay_us(r);" for BK7231N.

Here the code, maybe I missed something?
Code: text Expand Select all Copy to clipboard
// usleep adopted from DHT driver void OWusleep(int r) { #ifdef WIN32 // not possible on Windows port -#elif PLATFORM_BEKEN +#elif PLATFORM_BK7231T float adj = 1; if(g_powersave) adj = 1.5; usleep((17 * r * adj) / 10); // "1" is to fast and "2" to slow, 1.7 seems better than 1.5 (only from observing readings, no scope involved) #else HAL_Delay_us(r); #endif }

#105 21442774 16 Feb 2025 23:43

insmod insmod

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Post #105

21442774 16 Feb 2025 23:43

>>21442351 I just tried to test mine, and it works. But, there are still some "read reset failed".
Sometimes it will get data after only one of those, sometimes only after ~10. But what is this first reading?

Debug:API:POST to api/cmnd
Debug:CMD:cmd [startdriver ds1820]
Info:MAIN:Started ds1820.
Info:CMD:[WebApp Cmd 'startdriver ds1820' Result] OK
Info:SENSOR:DS1820[7] - Discover Family - discovered 28
Info:SENSOR:DS1820[7] - Starting conversion
Info:MAIN:Time 48, idle 193315/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing -1, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 49, idle 185809/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing -1, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 50, idle 196047/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing -1, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 51, idle 188523/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing -1, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 52, idle 190942/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing -1, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 53, idle 193540/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing -1, socks 2/38 
Debug:SENSOR:DS1820[7] - family=28, raw=10880, cfg=60 (12 bit resolution)
Info:SENSOR:DS1820[7] - Temp=85.00
Info:MAIN:Time 54, idle 189578/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing -1, socks 2/38 
Info:MAIN:Time 55, idle 378261/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing -1, socks 2/38 
Info:MAIN:Time 56, idle 191041/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing -1, socks 2/38 
Info:MAIN:Time 57, idle 191093/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing -1, socks 2/38 
Info:MAIN:Time 58, idle 188706/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing -1, socks 2/38 
Info:MAIN:Time 59, idle 379119/s, free 77568, MQTT 1(6), bWifi 1, secondsWithNoPing -1, socks 3/38 
Info:MAIN:Time 60, idle 193309/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing -1, socks 2/38 
Info:SENSOR:DS1820[7] - Starting conversion
Info:MAIN:Time 61, idle 187782/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing -1, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 62, idle 193388/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing -1, socks 2/38 
Debug:SENSOR:DS1820[7] - family=28, raw=3136, cfg=60 (12 bit resolution)
Info:SENSOR:DS1820[7] - Temp=24.50
Info:MAIN:Time 63, idle 187604/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing -1, socks 2/38 
Info:MAIN:Time 64, idle 189103/s, free 69176, MQTT 1(6), bWifi 1, secondsWithNoPing -1, socks 3/38 
Info:MAIN:Time 65, idle 193075/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing -1, socks 2/38 
Info:MAIN:Time 66, idle 188259/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 1, socks 2/38 
Info:MAIN:Time 67, idle 191709/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 2, socks 2/38 
Info:MAIN:Time 68, idle 189787/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 3, socks 2/38 
Info:MAIN:Time 69, idle 188117/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 4, socks 2/38 
Info:MAIN:Time 70, idle 189405/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 5, socks 2/38 
Info:MAIN:Time 71, idle 191669/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 6, socks 2/38 
Info:MAIN:Time 72, idle 189410/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 7, socks 2/38 
Info:MAIN:Time 73, idle 189096/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 8, socks 2/38 
Info:MAIN:Time 74, idle 381571/s, free 77568, MQTT 1(6), bWifi 1, secondsWithNoPing 9, socks 3/38 
Info:MAIN:Time 75, idle 572482/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 10, socks 2/38 
Info:SENSOR:DS1820[7] - Starting conversion
Info:MAIN:Time 76, idle 762924/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 11, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 77, idle 952135/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 12, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 78, idle 192057/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 13, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 79, idle 188591/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 14, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 80, idle 197211/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 15, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 81, idle 185913/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 16, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 82, idle 379122/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 17, socks 2/38 
Debug:SENSOR:DS1820[7] - family=28, raw=3136, cfg=60 (12 bit resolution)
Info:SENSOR:DS1820[7] - Temp=24.50
Info:MAIN:Time 83, idle 192673/s, free 69400, MQTT 1(6), bWifi 1, secondsWithNoPing 18, socks 3/38 
Info:MAIN:Time 84, idle 186696/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 19, socks 2/38 
Info:MAIN:Time 85, idle 377533/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 20, socks 2/38 
Info:MAIN:Time 86, idle 193466/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 21, socks 2/38 
Info:MAIN:Time 87, idle 188678/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 22, socks 2/38 
Info:MAIN:Time 88, idle 189030/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 23, socks 2/38 
Info:MAIN:Time 89, idle 191516/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 24, socks 2/38 
Info:MAIN:Time 90, idle 189758/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 25, socks 2/38 
Info:SENSOR:DS1820[7] - Starting conversion
Info:MAIN:Time 91, idle 189778/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 26, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 92, idle 195558/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 27, socks 2/38 
Debug:SENSOR:DS1820[7] - family=28, raw=3120, cfg=60 (12 bit resolution)
Info:SENSOR:DS1820[7] - Temp=24.37
Info:MAIN:Time 93, idle 191454/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 28, socks 2/38 
Info:MAIN:Time 94, idle 186261/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 29, socks 2/38 
Info:MAIN:Time 95, idle 190660/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 30, socks 2/38 
Info:MAIN:Time 96, idle 187648/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 31, socks 2/38 
Info:MAIN:Time 97, idle 191730/s, free 68784, MQTT 1(6), bWifi 1, secondsWithNoPing 32, socks 3/38 
Info:MAIN:Time 98, idle 189809/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 33, socks 2/38 
Info:MAIN:Time 99, idle 191439/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 34, socks 2/38 
Info:MAIN:Time 100, idle 193029/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 35, socks 2/38 
Info:MAIN:Time 101, idle 384106/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 36, socks 2/38 
Info:MAIN:Time 102, idle 187751/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 37, socks 2/38 
Info:MAIN:Time 103, idle 187654/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 38, socks 2/38 
Info:MAIN:Time 104, idle 191350/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 39, socks 2/38 
Info:MAIN:Time 105, idle 191090/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 40, socks 2/38 
Info:SENSOR:DS1820[7] - Starting conversion
Info:MAIN:Time 106, idle 188096/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 41, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 107, idle 194403/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 42, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 108, idle 191514/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 43, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 109, idle 188459/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 44, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 110, idle 376133/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 45, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 111, idle 189876/s, free 69176, MQTT 1(6), bWifi 1, secondsWithNoPing 46, socks 3/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 112, idle 188583/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 47, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 113, idle 191730/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 48, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 114, idle 190629/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 49, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 115, idle 189474/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 50, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 116, idle 194757/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 51, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 117, idle 388272/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 52, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 118, idle 187987/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 53, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 119, idle 193854/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 54, socks 2/38 
Debug:SENSOR:DS1820[7] - family=28, raw=3120, cfg=60 (12 bit resolution)
Info:SENSOR:DS1820[7] - Temp=24.37
Info:MAIN:Time 120, idle 190952/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 55, socks 2/38 
Info:SENSOR:DS1820[7] - Starting conversion
Info:MAIN:Time 121, idle 187377/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 56, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 122, idle 192055/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 57, socks 2/38 
Debug:SENSOR:DS1820[7] - family=28, raw=3120, cfg=60 (12 bit resolution)
Info:SENSOR:DS1820[7] - Temp=24.37
Info:MAIN:Time 123, idle 186822/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 58, socks 2/38 
Info:MAIN:Time 124, idle 188121/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 59, socks 2/38 
Info:MAIN:Time 125, idle 193480/s, free 69176, MQTT 1(6), bWifi 1, secondsWithNoPing 60, socks 3/38 
Info:MAIN:Time 126, idle 190295/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 61, socks 2/38 
Info:MAIN:Time 127, idle 195664/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 62, socks 2/38 
Info:MAIN:Time 128, idle 191708/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 63, socks 2/38 
Info:MAIN:Time 129, idle 188934/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 64, socks 2/38 
Info:MAIN:Time 130, idle 192865/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 65, socks 2/38 
Info:MAIN:Time 131, idle 188019/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 66, socks 2/38 
Info:MAIN:Time 132, idle 189758/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 67, socks 2/38 
Info:MAIN:Time 133, idle 186040/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 68, socks 2/38 
Info:MAIN:Time 134, idle 193446/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 69, socks 2/38 
Info:MAIN:Time 135, idle 186655/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 70, socks 2/38 
Info:SENSOR:DS1820[7] - Starting conversion
Info:MAIN:Time 136, idle 192044/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 71, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 137, idle 387777/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 72, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 138, idle 577706/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 73, socks 2/38 
Debug:SENSOR:DS1820[7] - family=28, raw=3112, cfg=60 (12 bit resolution)
Info:SENSOR:DS1820[7] - Temp=24.31
Info:MAIN:Time 139, idle 191241/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 74, socks 2/38 
Info:MAIN:Time 140, idle 188239/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 75, socks 2/38 
Info:MAIN:Time 141, idle 187732/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 76, socks 2/38 
Info:MAIN:Time 142, idle 191689/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 77, socks 2/38 
Info:MAIN:Time 143, idle 190090/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 78, socks 2/38 
Info:MAIN:Time 144, idle 188292/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 79, socks 2/38 
Info:MAIN:Time 145, idle 188485/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 80, socks 2/38 
Info:MAIN:Time 146, idle 190890/s, free 69400, MQTT 1(6), bWifi 1, secondsWithNoPing 81, socks 3/38 
Info:MAIN:Time 147, idle 188120/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 82, socks 2/38 
Info:MAIN:Time 148, idle 375828/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 83, socks 2/38 
Info:MAIN:Time 149, idle 192557/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 84, socks 2/38 
Info:MAIN:Time 150, idle 188877/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 85, socks 2/38 
Info:SENSOR:DS1820[7] - Starting conversion
Info:MAIN:Time 151, idle 202450/s, free 69176, MQTT 1(6), bWifi 1, secondsWithNoPing 86, socks 3/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 152, idle 189091/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 87, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 153, idle 192871/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 88, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 154, idle 384163/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 89, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 155, idle 192757/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 90, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 156, idle 187609/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 91, socks 2/38 
Debug:SENSOR:DS1820[7] - family=28, raw=3104, cfg=60 (12 bit resolution)
Info:SENSOR:DS1820[7] - Temp=24.25
Info:MAIN:Time 157, idle 191214/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 92, socks 2/38 
Info:MAIN:Time 158, idle 189986/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 93, socks 2/38 
Info:MAIN:Time 159, idle 201830/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 94, socks 2/38 
Info:MAIN:Time 160, idle 190822/s, free 69176, MQTT 1(6), bWifi 1, secondsWithNoPing 95, socks 3/38 
Info:MAIN:Time 161, idle 189917/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 96, socks 2/38 
Info:MAIN:Time 162, idle 189993/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 97, socks 2/38 
Info:MAIN:Time 163, idle 189838/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 98, socks 2/38 
Info:MAIN:Time 164, idle 192188/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 99, socks 2/38 
Info:MAIN:Time 165, idle 188519/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 100, socks 2/38 
Info:SENSOR:DS1820[7] - Starting conversion
Info:MAIN:Time 166, idle 188960/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 101, socks 2/38 
Error:SENSOR:DS1820[7] - Read Reset failed
Info:MAIN:Time 167, idle 189565/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 102, socks 2/38 
Debug:SENSOR:DS1820[7] - family=28, raw=3096, cfg=60 (12 bit resolution)
Info:SENSOR:DS1820[7] - Temp=24.18
Info:MAIN:Time 168, idle 189358/s, free 77384, MQTT 1(6), bWifi 1, secondsWithNoPing 103, socks 3/38 
Info:MAIN:Time 169, idle 184971/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 104, socks 2/38 
Info:MAIN:Time 170, idle 194293/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 105, socks 2/38 
Info:MAIN:Time 171, idle 381805/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 106, socks 2/38 
Info:MAIN:Time 172, idle 193122/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 107, socks 2/38 
Info:MAIN:Time 173, idle 191074/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 108, socks 2/38 
Info:MAIN:Time 174, idle 190147/s, free 77808, MQTT 1(6), bWifi 1, secondsWithNoPing 109, socks 2/38

DHT11 works without problems.

#106 21442808 17 Feb 2025 01:08

p.kaczmarek2 p.kaczmarek2

Moderator Smart Home
Helpful post? (0)

Post #106
21442808 17 Feb 2025 01:08

1538_merge_0cfb7dd92c18 on CB3S:

1538_merge_0cfb7dd92c18 on NiceMCU:

DS18B20 is not working, what's wrong with NTP?
I'm sure NTP worked few days before: https://www.elektroda.com/rtvforum/topic4106397.html
Probably strtotime expects 64 bit and gets 32 bit?
1.18.42 NiceMCU:

It seems DS18B20 does not work on NiceMCU for me yet, not in release and neither in pr. Still, I need to triple-check my connections.

Added after 3 [minutes]:

Code: text Expand Select all Copy to clipboard
Error:SENSOR:DS1820[17] - Family not discovered

P17 NiceMCU

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

Helpful post? Buy me a coffee.
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#107 21442812 17 Feb 2025 01:33

insmod insmod

Level 31

Helpful post? (0)

Post #107
21442812 17 Feb 2025 01:33

>>21442808 If "Family not discovered", then DS18B20 gets detected, but one of the changes for the driver stopped work for some fake sensors, even if they worked before.
It seems i will need to remove time_t define, and only use it for flashvars.

Added after 12 [minutes]:

Fix uploaded, should also attempt to continue if ds18b20 family is not discovered.

#108 21442816 17 Feb 2025 02:06

p.kaczmarek2 p.kaczmarek2

Moderator Smart Home

Post #108

21442816 17 Feb 2025 02:06

insmod wrote:
>>21442808 If "Family not discovered", then DS18B20 gets detected, but one of the changes for the driver stopped work for some fake sensors, even if they worked before.

I am testing with a single DS18B20 batch from Aliexpress and it's not working only on NiceMCU, but let me retry.

I'll add screenshots in a moment.

Added after 13 [minutes]:

1538_merge_331bfab0a8a5 NiceMCU:

OpenBK7238_8C10262A user interface screenshot showing sensor information.


Info:MAIN:Time 225, idle 0/s, free 122424, MQTT 0(14), bWifi 1, secondsWithNoPing 159, socks 2/20 
Info:SENSOR:DHT start, pin is 22
Error:SENSOR:DS1820[17] - Family not discovered, but continuing anyway
Info:SENSOR:DS1820[17] - Starting conversion
Info:MAIN:Time 226, idle 0/s, free 122424, MQTT 0(14), bWifi 1, secondsWithNoPing 160, socks 2/20 
Error:SENSOR:DS1820[17] - Read Reset failed
Info:MAIN:Time 227, idle 0/s, free 122424, MQTT 0(14), bWifi 1, secondsWithNoPing 161, socks 2/20 
Error:SENSOR:DS1820[17] - Read CRC=ff != calculated:c9 (errcount=1)
Error:SENSOR:DS1820[17] - Scratchpad Data Read: ff ff ff ff ff ff ff ff ff
Info:MAIN:Time 228, idle 0/s, free 122424, MQTT 0(14), bWifi 1, secondsWithNoPing 162, socks 2/20 
Info:SENSOR:DHT start, pin is 22
Error:SENSOR:DS1820[17] - Read CRC=ff != calculated:c9 (errcount=2)
Error:SENSOR:DS1820[17] - Scratchpad Data Read: ff ff ff ff ff ff ff ff ff
Info:MAIN:Time 229, idle 0/s, free 122424, MQTT 0(14), bWifi 1, secondsWithNoPing 163, socks 2/20 
Error:SENSOR:DS1820[17] - Read CRC=ff != calculated:c9 (errcount=3)
Error:SENSOR:DS1820[17] - Scratchpad Data Read: ff ff ff ff ff ff ff ff ff
Error:SENSOR:DS1820[17] - Read CRC=ff != calculated:c9 (errcount=4)
Error:SENSOR:DS1820[17] - Scratchpad Data Read: ff ff ff ff ff ff ff ff ff
Info:MAIN:Time 231, idle 0/s, free 130728, MQTT 0(14), bWifi 1, secondsWithNoPing 165, socks 2/20 
Info:SENSOR:DHT start, pin is 22
Info:GEN:No change in channel 6 (still set to 226) - ignoring

Info:GEN:No change in channel 7 (still set to 39) - ignoring
Error:SENSOR:DS1820[17] - Read CRC=ff != calculated:c9 (errcount=6)
Error:SENSOR:DS1820[17] - Scratchpad Data Read: ff ff ff ff ff ff ff ff ff

1538_merge_331bfab0a8a5 CB3S:
first read:

Screenshot of the OBK_DevBoard_CB3S user interface displaying sensor readings and configuration options.

Screenshot of the OBK_DevBoard_CB3S interface showing temperature and humidity data.

When I swap DS18B20s, it still work with CB3S. I also swapped resistors. Still, NiceMCU can't read.

Maybe I will attempt to check with scope, if I'll manage to get enough free time. I'm still not sure if it's not just a human error, but I triple checked on P15 and P17 (on photo and screenshot).

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

Helpful post? Buy me a coffee.

#109 21443290 17 Feb 2025 12:48

max4elektroda max4elektroda

Level 24

Post #109

21443290 17 Feb 2025 12:48

I tried again with the PR and BK7238 this time - I can't get DS1820 running while DHT11 runs fine.

I made a simple testing command and if I didn't make a mistake the results show, why it doesn't work:

This test was "testus 17 5 2 4 6 10 20 50 100 200 500", which should set pin 17 to low for 2, 4, 6, 10, ... 500 us.

The result for the first test 2us e.g. was over 120us according to the analyzer, but that's probably due to loading the code (it can also be seen on other platforms).
But if you compare the values 3 4 5 (which should be 6 10 and 20 us), there is no visible difference.

Some "measured" values: 58us for 6, 58us for 10, 57us for 20, 126us for 100 and 522us for 500

The same test on a W800:

The first test is also longer than the following ones, but after that you can see the length seems good related to the numbers
(measured 5us for 4, 10.6us for 10, 20,5us for 20 .. and 497 for 500)

The used code, maybe there is something wrong?!?:


diff --git a/src/driver/drv_ds1820_simple.c b/src/driver/drv_ds1820_simple.c
index 14030b56..a60a362a 100644
--- a/src/driver/drv_ds1820_simple.c
+++ b/src/driver/drv_ds1820_simple.c
@@ -280,11 +280,63 @@ int DS1820_getTemp()
    return t;
 }
 
+
+// will allow testus <pin> <us between tests> <us val 1> <us val 2> .... 
+commandResult_t CMD_OW_testus(const void *context, const char *cmd, const char *args, int cmdFlags) {
+   Tokenizer_TokenizeString(args, TOKENIZER_ALLOW_QUOTES);
+   int tests= Tokenizer_GetArgsCount()-2;   // first two are pin and pause-value
+   if(Tokenizer_GetArgsCount()<=3) {
+      return CMD_RES_NOT_ENOUGH_ARGUMENTS;
+   }
+#define MAXUSTESTS 10
+   int testvals[MAXUSTESTS];
+   int pin = Tokenizer_GetArgInteger(0);
+   int pause = Tokenizer_GetArgInteger(1);
+   if (tests > MAXUSTESTS){
+      tests > MAXUSTESTS;
+      DS1820_LOG(INFO, "testus -  Warning, will only do the first %i tests!\r\n",tests);
+   } 
+   for (int i=0; i<tests; i++){
+      testvals[i]=Tokenizer_GetArgInteger(2+i);
+   }
+   DS1820_LOG(DEBUG, "testus - pin=%i pause=%i tests=%i ...",pin,pause,tests);
+   for (int i=0; i<tests; i++){
+      DS1820_LOG(DEBUG, "test %i value=%i ...",i,testvals[i]);
+   }
+   DS1820_LOG(DEBUG, "\r\n starting tests ...");
+
+   HAL_PIN_SetOutputValue(pin, 1);
+   HAL_PIN_Setup_Output(pin);
+   HAL_PIN_SetOutputValue(pin, 1);
+   // at least on BK7238 HAL_PIN_Setup_Output(pin) will set pin LOW first, even if HAL_PIN_SetOutputValue(pin, 1); was called before
+   // so to have a clear defined tes, do a long delay before the actual tests (we could also ignore the first change, but if it's different on other platforms...)
+   vTaskDelay(200);
+   for (int i=0; i<tests; i++){
+      noInterrupts();
+      HAL_PIN_SetOutputValue(pin, 0);
+      usleepds(testvals[i]);
+      HAL_PIN_SetOutputValue(pin, 1);
+      interrupts();
+      usleepds(pause);
+   }
+   DS1820_LOG(DEBUG, "... tests done\r\n");
+   return CMD_RES_OK;
+}
+
+
 // startDriver DS1820 [conversionPeriod (seconds) - default 15]
 void DS1820_driver_Init()
 {
    ds18_conversionPeriod = Tokenizer_GetArgIntegerDefault(1, 15);
    lastconv = 0;
+
+#include "../cmnds/cmd_public.h"
+
+   //cmddetail:{"name":"testus","args":"pin <pause in us> <testval 1 in us> [<testval n in us>...]",
+   //cmddetail:"descr":"tests usleep on given pin ",
+   //cmddetail:"fn":"NULL);","file":"driver/drv_ds1820_simple.c","requires":"",
+   //cmddetail:"examples":"testus 11 5 2 4 6 10 20 50 100 200 500"}
+   CMD_RegisterCommand("testus", CMD_OW_testus, NULL);
 };
 
 void DS1820_AppendInformationToHTTPIndexPage(http_request_t* request)

#110 21483339 17 Mar 2025 09:28

divadiow divadiow

Level 38

Topic author Helpful post? (0)

Post #110
21483339 17 Mar 2025 09:28

this exists. tuya kit
Code: Text
Log in, to see the code
Helpful post

#111 21507214 04 Apr 2025 22:01

insmod insmod

Level 31

Helpful post? (+2)

Helpful post
Post #111
21507214 04 Apr 2025 22:01

BK7231U incoming...
And with it, probably BK7231T with new sdk.
And all i had to do, was to comment out one line that was added in v3.0.56.

@p.kaczmarek2 did you check https://github.com/openshwprojects/OpenBK7231T_App/pull/1297 ?
It contains PSK connecting, that was 'fixed up' and now behind a flag. More info in comment: https://github.com/openshwprojects/OpenBK7231T_App/pull/1297#issuecomment-2761705960
One question though, why HAL_DisconnectFromWifi is called in WIFI_STA_DISCONNECTED handler? It changed nothing when i removed it, but fixed occasional realtek crashes for me.
#112 21507236 04 Apr 2025 22:23

p.kaczmarek2 p.kaczmarek2

Moderator Smart Home

Helpful post? (0)

Post #112
21507236 04 Apr 2025 22:23

Great news! What was the single line fix? Is BK7231U that CC8000 chip? I think so. I may still have this module.

insmod wrote:

And with it, probably BK7231T with new sdk.

With SPI DMA driver for LEDs, maybe? I've ordered some more WS2812 clones recently (RGBW as well) and I am going to extend OBK to support them as well.

insmod wrote:

@p.kaczmarek2 did you check https://github.com/openshwprojects/OpenBK7231T_App/pull/1297 ?
It contains PSK connecting, that was 'fixed up' and now behind a flag. More info in comment: https://github.com/openshwprojects/OpenBK7231T_App/pull/1297#issuecomment-2761705960

I can merge it right away if you can confirm that it works. This is a strongly desired change for battery-powered devices. Maybe @divadiow can check. Or I can try to check soon as well myself.

However... there may be one thing I'd request to be changed.
That part:

Is RF only or MCU only sleep possible for other platforms as well? Because we're already starting to have per-platform PowerSave syntax.
Wouldn't it be better to move on to some better syntax that can be more meaningful and just print "not supported" message if it's not available on current platform?
Something like "PowerSave MCU", "PowerSave MCURF", "PowerSave RF", but of course only add the necessary ones. And don't break compatibility with older syntax, just don't introduce arguments meaning different things per platform.

Interestingly enough, I remember that original BK7231N SDK had this feature enabled. I know this because it was overwriting the same area where OBK config is in. It was the first bug I had to fix after porting to BK7231N back in the days.

insmod wrote:

One question though, why HAL_DisconnectFromWifi is called in WIFI_STA_DISCONNECTED handler? It changed nothing when i removed it, but fixed occasional realtek crashes for me.

Maybe it originates from here? HAL_DisconnectFromWifi https://github.com/openshwprojects/OpenBK7231T_App/issues/1246
I'm not sure.

Currently I'm focusing on Berry integration, and so far I got some useful features covered, like change handlers, TuyaMCU events, and I'm even able to parse TuyaMCU data with it. Still, Berry integration is still very early and most likely have at least one serious design error because I'm calling Berry directly from event handler, and if event handler is called from nested function, then stack may run out very quickly. I may introduce events queue for berry soon.

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

Helpful post? Buy me a coffee.
#113 21507260 04 Apr 2025 22:49

insmod insmod

Level 31

Helpful post? (0)

Post #113
21507260 04 Apr 2025 22:49

>>21507236 Yes, i'm using a CC8000 module (HLK-B30).
SPI DMA is not implemented for new sdk in OBK, and driver syntax should be more close to T than N (in tuya sdks).

Regarding power save, i think most complex one is for ESP. Up to 4 arguments.
First is default power save(esp_wifi_set_ps), if 1 - WIFI_PS_MIN_MODEM, 2 - WIFI_PS_MAX_MODEM. 0 is WIFI_PS_NONE.
Second is TX power in dBm.
Third and fourth is min frequency and max frequency respectively.
And while powersave for realtek is only 1 argument, in RTL8710B powersave 2 reduces frequency by half, and 3 by quarter.
So, we need 2 more commands? For powersave, make argument 1 for RF, argument 2, if possible, for MCU. One is for TX power, and another for frequency selection.

I just replaced line https://github.com/NonPIayerCharacter/beken_f...001d32b6/beken378/func/misc/start_type.c#L249 with #if 0.

Unfortunately, if i press restart or reset power on U, reboot reason is always pin interrupt.

HAL_DisconnectFromWifi in handler is much older, added here: https://github.com/openshwprojects/OpenBK7231...mmit/4b75cf4202b745b5cefbf1652ec798ab5335ead6
#114 21507930 05 Apr 2025 17:39

divadiow divadiow

Level 38

Topic author Helpful post? (0)

Post #114
21507930 05 Apr 2025 17:39

could I trouble you for the U file please? I don't see it in the either workflows...
#115 21507940 05 Apr 2025 17:46

insmod insmod

Level 31
Helpful post? (0)

Post #115
21507940 05 Apr 2025 17:46

>>21507930
@divadiow
This version is with fast connect

Attachments:

dev_20250405_183455.rar (2.05 MB) You must be logged in to download this attachment.
#116 21507945 05 Apr 2025 23:32

divadiow divadiow

Level 38

Topic author Helpful post? (0)

Post #116
21507945 05 Apr 2025 23:32

thank you

Added after 5 [hours] 37 [minutes]:

nice

QIO bit-banged to HLK-B30. log from D12
Code: Text
Log in, to see the code

Added after 6 [minutes]:

insmod wrote:
Unfortunately, if i press restart or reset power on U, reboot reason is always pin interrupt.

did you fix this? I always have Pwr or Rbt
#117 21508392 05 Apr 2025 23:43

insmod insmod

Level 31

Helpful post? (0)

Post #117
21508392 05 Apr 2025 23:43

>>21507945 I did, you can check latest sdk commit, fix is in beken378/driver/sys_ctrl/sys_ctrl.c, taken from T sdk.
Builds for T, N and U with new sdk are here: https://github.com/NonPIayerCharacter/OpenBK7231T_App/actions/runs/14284132899/attempts/1
I don't know if bl0937 will work ok with T, because i was unable to fix it for N. Voltage readings are still wonky, with occasional spikes over 20 kV.

Is your device alive after reboot with new bootloader? Does OTA work? I remember that on N with new bootloader it completely died after reboot, wouldn't work until reflash.
#118 21508500 06 Apr 2025 09:00

divadiow divadiow

Level 38
Topic author Helpful post? (0)

Post #118
21508500 06 Apr 2025 09:00

with original V(0.1.4) I have flashed BK7231U to 0x11000 using EF

OTA appears to work still:

Spoiler:
[Flash]id:0x1c7015
--write status reg:34,1--
[Flash]init over
--write status reg:0,1--
Info:OTA:init OTA, startaddr 0x132000
Info:OTA:132000
Info:OTA:133000
Info:OTA:134000
Info:OTA:135000
Info:OTA:136000
Info:OTA:137000
Info:OTA:138000
Info:OTA:139000
Info:OTA:13a000
Info:OTA:13b000
Info:OTA:13c000
Info:OTA:13d000
Info:OTA:13e000
Info:OTA:13f000
Info:OTA:140000
Info:MAIN:Time 59, idle 0/s, free 73544, MQTT 0(4), bWifi 1, secondsWithNoPing -1, socks 3/20
Info:OTA:141000
Info:OTA:142000
Info:OTA:143000
Info:OTA:144000
Info:OTA:145000
Info:OTA:146000
Info:OTA:147000
Info:OTA:148000
Info:OTA:149000
Info:OTA:14a000
Info:OTA:14b000
Info:OTA:14c000
Info:OTA:14d000
Info:OTA:14e000
Info:OTA:14f000
Info:OTA:150000
Info:OTA:151000
Info:OTA:152000
Info:OTA:153000
Info:OTA:154000
Info:OTA:155000
Info:OTA:156000
Info:OTA:157000
Info:OTA:158000
Info:OTA:159000
Info:OTA:15a000
Info:OTA:15b000
Info:OTA:15c000
Info:OTA:15d000
Info:OTA:15e000
Info:OTA:15f000
Info:OTA:160000
Info:OTA:161000
Info:OTA:162000
Info:OTA:163000
Info:MAIN:Time 60, idle 0/s, free 66520, MQTT 0(4), bWifi 1, secondsWithNoPing -1, socks 3/20
Info:GEN:dhcp=0 ip=192.168.137.203 gate=192.168.137.1 mask=255.255.255.0 mac=c8:47:8c:42:88:48
Info:GEN:sta: 1, softap: 0, b/g/n
Info:GEN:sta:rssi=-51,ssid=test,bssid=3a:7a:0e:e3:6b:7e,channel=1,cipher_type:CCMP
Info:OTA:164000
Info:OTA:165000
Info:OTA:166000
Info:OTA:167000
Info:OTA:168000
Info:OTA:169000
Info:OTA:16a000
Info:OTA:16b000
Info:OTA:16c000
Info:OTA:16d000
Info:OTA:16e000
Info:OTA:16f000
Info:OTA:170000
Info:OTA:171000
Info:OTA:172000
Info:OTA:173000
Info:OTA:174000
Info:OTA:175000
Info:OTA:176000
Info:OTA:177000
Info:OTA:178000
Info:OTA:179000
Info:OTA:17a000
Info:OTA:17b000
Info:OTA:17c000
Info:OTA:17d000
Info:OTA:17e000
Info:OTA:17f000
Info:OTA:180000
Info:OTA:181000
Info:OTA:182000
Info:OTA:183000
Info:OTA:184000
Info:OTA:185000
Info:OTA:186000
Info:OTA:187000
Info:OTA:188000
Info:OTA:189000
Info:OTA:18a000
Info:OTA:18b000
Info:OTA:18c000
Info:OTA:18d000
Info:OTA:18e000
Info:OTA:18f000
Info:OTA:190000
Info:OTA:191000
Info:OTA:192000
Info:OTA:193000
Info:OTA:194000
Info:OTA:195000
Info:OTA:196000
Info:OTA:197000
Info:OTA:198000
Info:OTA:199000
Info:OTA:19a000
Info:OTA:19b000
Info:OTA:19c000
Info:OTA:19d000
Info:OTA:19e000
Info:MAIN:Time 61, idle 0/s, free 81616, MQTT 0(4), bWifi 1, secondsWithNoPing -1, socks 3/20
Info:OTA:19f000
Info:OTA:1a0000
Info:OTA:1a1000
Info:OTA:1a2000
Info:OTA:1a3000
Info:OTA:1a4000
Info:OTA:1a5000
Info:OTA:1a6000
Info:OTA:1a7000
Info:OTA:1a8000
Info:OTA:1a9000
Info:OTA:1aa000
Info:OTA:1ab000
Info:OTA:1ac000
Info:OTA:1ad000
Info:OTA:1ae000
Info:OTA:
Info:OTA:close OTA, additional 0xeb0 FF added
Info:OTA:1af000
--write status reg:34,1--
Info:OTA:close OTA, addr 0x1af400
--write status reg:0,1--
--write status reg:7c,1--
Info:MAIN:Time 62, idle 0/s, free 104848, MQTT 0(4), bWifi 1, secondsWithNoPing -1, socks 2/20
Info:MAIN:Module reboot in 2...
Info:MAIN:Time 63, idle 0/s, free 104848, MQTT 0(4), bWifi 1, secondsWithNoPing -1, socks 2/20
Info:MAIN:Module reboot in 1...
bk_reboot(1)
wdt reboot

V(0.1.4)
CPSR:0x000000D3
R0:0x00000000
R1:0x00000003
R2:0x0E330001
R3:0x00000000
R4:0x000AF9EF
R13:0x00403B80
R14(LR):0x00013C8C
[I/FAL] Fal(V0.4.0)success
[I/OTA] RT-Thread OTA package(V0.2.4) initialize success.
[I/OTA] OTA firmware(app) upgrade(2M.1220->_7231u_t_1387e60adaac) startup.
[I/OTA] The partition 'app' is erasing.
###############BBBBBBBBBBB##############[I/OTA] The partition 'app' erase success.
[I/OTA] OTA Write: [> ] 0%
[I/OTA] OTA Write: [> ] 0%
[I/OTA]
[I/OTA] OTA Write: [> ] 0%
[I/OTA]
[I/OTA] OTA Write: [=> ] 1%
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[I/OTA]
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[I/OTA]
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[E/OTA] (ota_erase_dl_rbl:24) ota_erase_dl_rbl

[E/OTA] (ota_erase_dl_rbl:34) ota_erase_dl_rbl erase:132000

go os_addr(0x10000)..........
prvHeapInit-start addr:0x418108, size:163576
[Flash]id:0x1c7015
--write status reg:34,1--
[Flash]init over
sctrl_sta_ps_init
SDK Rev: 3.0.70 e492df8
OSK Rev: F-3.0.44 e492df8
cset:0 0 0 0
Entering initLog()...
Commands registered!
initLog() done!
--write status reg:0,1--
--write status reg:7c,1--
--write status reg:0,1--
--write status reg:7c,1--
--write status reg:0,1--
--write status reg:7c,1--
--write status reg:0,1--
--write status reg:7c,1--
--write status reg:0,1--
--write status reg:7c,1--
Main_Init_Before_Delay done
Main_Init_Delay
No TLV header found in flash
[FUNC]rwnxl_init
chip id=7231a device id=18521020
IP Rev: W4-3.0.70-P0
txdesc flush
[FUNC]intc_init
[FUNC]calibration_main
No TLV header found in flash

rfcali_mode:1, 0
*********** finally result **********
gtx_dcorMod : 0x8
gtx_dcorPA : 0xa
gtx_pre_gain : 0x10
gtx_i_dc_comp : 0x1fd
gtx_q_dc_comp : 0x209
gtx_i_gain_comp : 0x3f7
gtx_q_gain_comp : 0x3ff
gtx_ifilter_corner over: 0xf
gtx_qfilter_corner over: 0x10
gtx_phase_comp : 0x204
gtx_phase_ty2 : 0x200
gbias_after_cal : 0x17
gav_tssi : 0x0
g_rx_dc_gain_tab 0 over: 0x80788070
g_rx_dc_gain_tab 1 over: 0x88728870
g_rx_dc_gain_tab 2 over: 0x92709070
g_rx_dc_gain_tab 3 over: 0xb860a864
g_rx_dc_gain_tab 4 over: 0xba62ba60
g_rx_dc_gain_tab 5 over: 0xba64ba64
g_rx_dc_gain_tab 6 over: 0xbc64bc64
g_rx_dc_gain_tab 7 over: 0xbd65bc65
grx_amp_err_wr : 0x1f1
grx_phase_err_wr : 0x3f6
**************************************
NO RF TLV in flash, write def tab
NO TXPWR_TAB_TAB found in flash
Load default txpwr for b:0xccd65
Load default txpwr for g:0xccd9b
fit n20 table with dist:2
Load default txpwr for n40:0xccda9
Load default txpwr for ble:0xccd73
NO TXID found in flash, use lpf i&q:15, 16
NO TXID found in flash, use def xtal:25
xtal in flash is:25
xtal_cali:25
rwnx_tpc_pa_map_init
[FUNC]ps_init
int watchdog enabled, period=10000
task watchdog enabled, period=60000
[FUNC]func_init_extended OVER!!!

start_type:1
Initializing TCP/IP stack
rf_thread_init ok

delayinbk_wlan_app_init finishg start
ed
Info:MAIN:Main_Init_Before_Delay
Info:CFG:####### Boot Count 4 #######
Warn:CFG:CFG_InitAndLoad: #Startup delayed 0ms#
Correct config has been loaded with 3 changes count.
Error:CMD:lfs is absent
Info:GEN:PIN_#Startup delayed 10ms#
SetupPins pins have been set up.
Info:MAIN:Main_Init_Before_Delay done
Info:MAIN:Main_Init#Startup delayed 20ms#
_Delay
#Startup delayed 30ms#
#Startup delayed 40ms#
#Startup delayed 50ms#
#Startup delayed 60ms#
#Startup delayed 70ms#
#Startup delayed 80ms#
#Startup delayed 90ms#

starting....
Main_Init_Delay done
Info:MAIN:Main_Init_Delay done
Info:MAIN:Main_Init_After_Delay
Info:MAIN:Using SSID [test]
Info:MAIN:Using Pass [1234abcd]
Info:MQTT:MQTT_RegisterCallback called for bT obk8C428848/ subT obk8C428848/+/set
Info:MQTT:MQTT_RegisterCallback called for bT obks/ subT obks/+/set
Info:MQTT:MQTT_RegisterCallback called for bT cmnd/obk8C428848/ subT cmnd/obk8C428848/+
Info:MQTT:MQTT_RegisterCallback called for bT cmnd/obks/ subT cmnd/obks/+
Info:MQTT:MQTT_RegisterCallback called for bT obk8C428848/ subT obk8C428848/+/get
Info:CMD:CMD_StartScript: started @startup at the beginning
Error:CMD:LFS_ReadFile: lfs is absent
Info:CMD:CMD_StartScript: failed to get file autoexec.bat
Info:MAIN:Main_Init_After_Delay done
Info:HTTP:TCP server listening
Info:MAIN:Time 1, idle 0/s, free 131640, MQTT 0(0), bWifi 0, secondsWithNoPing -1, socks 2/20
Info:MAIN:Time 2, idle 0/s, free 131640, MQTT 0(0), bWifi 0, secondsWithNoPing -1, socks 2/20
Info:MAIN:Time 3, idle 0/s, free 131640, MQTT 0(0), bWifi 0, secondsWithNoPing -1, socks 2/20
Info:MAIN:Time 4, idle 0/s, free 131640, MQTT 0(0), bWifi 0, secondsWithNoPing -1, socks 2/20
[sa_sta]MM_RESET_REQ
txdesc flush
[sa_sta]ME_CONFIG_REQ
[sa_sta]ME_CHAN_CONFIG_REQ
[sa_sta]MM_START_REQ
PSKC: ssid test, passphrase 1234abcd
sizeof(wpa_supplicant)=1016
mm_add_if_req_handler:0
hapd_intf_add_vif,type:2, s:0, id:0
wpa_dInit
hapd_intf_del_key: mac ff:ff:ff:ff:ff:ff, hw key idx 65
hapd_intf_del_key: mac ff:ff:ff:ff:ff:ff, hw key idx 65
hapd_intf_del_key: mac ff:ff:ff:ff:ff:ff, hw key idx 65
hapd_intf_del_key: mac ff:ff:ff:ff:ff:ff, hw key idx 65
hapd_intf_del_key: mac ff:ff:ff:ff:ff:ff, hw key idx 65
hapd_intf_del_key: mac ff:ff:ff:ff:ff:ff, hw key idx 65
wpa S: DISCONNECTED -> INACTIVE
wpa S: INACTIVE -> DISCONNECTED
enter low level!
mac c8:47:8c:42:88:48
leave low level!
net_wlan_add_netif done!, vif_idx:0
wpa_supplicant_req_scan
Setting scan request: 0.000000 sec
wpa_supplicant_scan
wpa S: DISCONNECTED -> SCANNING
wpa_drv_scan
wpa_send_scan_req
no ht in scan
scan_start_req_handler
wpa_driver_scan_start_cb
wpa rx E SCAN_STARTED
Info:MAIN:Time 5, idle 0/s, free 131640, MQTT 0(0), bWifi 0, secondsWithNoPing -1, socks 2/20
Info:MAIN:Registered for wifi changes
Info:MAIN:Cwpa_driver_scan_cb
wpa rx E SCAN_RESULTS
Scan completed in 0.096000 seconds
wpa_get_scan_rst:1
cipher2security 2 2 16 16
cipher2security 2 2 16 16
onnecting to SSID [test]
--write status reg:0,1--
--write status reg:7c,1--
--write status reg:0,1--
--write status reg:7c,1--
--write status reg:0,1--
--write status reg:7c,1--
Info:MAIN:Time 6, idle 0/s, free 124120, MQTT 0(0), bWifi 0, secondsWithNoPing -1, socks 2/20
Info:MAIN:Boot complete time reached (5 seconds)
Info:CFG:####### Set Boot Complete #######
PSKC: end
cipher2security 2 2 16 16
cipher2security 2 2 16 16
wpa_supplicant_connect
Cancelling scan request
wpa S: SCANNING -> ASSOCIATING
wpa_driver_associate: auth_alg 0x1
found scan rst rssi -50 = -50 0
sta_mgmt_register: mac 3a:7a:0e:e3:6b:7e
sm_auth_send:1
Info:MAIN:Main_OnWiFiStatusChange - WIFI_STA_CONNECTING - 1
sm_auth_handler
ht in assoc req
Info:MAIN:Time 7, idle 0/s, free 122352, sm_assoc_rsp_handler
rc_init: station_id=0 format_mod=2 pre_type=0 short_gi=1 max_bw=0
rc_init: nss_max=0 mcs_max=7 r_idx_min=0 r_idx_max=3 no_samples=10
mm_set_vif_state_req_handler
chan_bcn_detect_start
---------SM_CONNECT_IND_ok, aid 1, bssid 3a:7a:0e:e3:6b:7e
Not associated - Delay processing of received EAPOL frame (state=ASSOCIATING bssid=00:00:00:00:00:00 )
wpa rx E ASSOC
wpa S: ASSOCIATING -> ASSOCIATED
Cancelnew dtim period:3

new ie: 0 : 74 65 73 74
new ie: 1 : 82 84 8b 96 8c 12 98 24
new ie: 3 : 1
new ie: 2d : a5 9 17 ff ff 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
new ie: 30 : 1 0 0 f ac 4 1 0 0 f ac 4 1 0 0 f ac 2 3c 0 0 0

ling scan request
wpa S: ASSOCIATED -> 4WAY_HANDSHAKE
WPA: TK f55f9f9ba153ef824509ab0b7064c74c
MQTT 0(0), bWifi 0, secondsWithNoPing -1, socks 2/20
wpa S: 4WAY_HANDSHAKE -> 4WAY_HANDSHAKE
hapd_intf_add_key CCMP
add sta_mgmt_get_sta
sta:0, vif:0, key:0
sta_mgmt_add_key
add hw key idx:24
wpa S: 4WAY_HANDSHAKE -> GROUP_HANDSHAKE
WPA: GTK 3251183c61352f7f2ceb541f40ea183b
hapd_intf_add_key CCMP
add is_broadcast_ether_addr
sta:255, vif:0, key:2
add hw key idx:2
wpa S: GROUP_HANDSHAKE -> COMPLETED
ctrl_port_hdl:1
me_set_ps_disable:978 0 0 0 0 1
dis set ps 1!!
WLAN_EVENT_CONNECTED
sta_ip_start

configuring interface mlan (with DHCP client)WARN: TCPIP mutex is NOT locked (1) caller A55C7
WARN: TCPIP mutex is NOT locked (1) caller A55C7
ip_addr: cb89a8c0
Info:MAIN:Main_OnWiFiStatusChange - WIFI_STA_CONNECTED - 4
Info:MAIN:Time 8, idle 0/s, free 124848, MQTT 0(0), bWifi 1, secondsWithNoPing -1, socks 2/20
Info:MAIN:Time 9, idle 0/s, free 124848, MQTT 0(0), bWifi 1, secondsWithNoPing -1, socks 2/20
Info:MQTT:mqtt_host empty, not starting mqtt
Info:MAIN:Time 10, idle 0/s, free 119280, MQTT 0(1), bWifi 1, secondsWithNoPing -1, socks 2/20
Info:GEN:dhcp=0 ip=192.168.137.203 gate=192.168.137.1 mask=255.255.255.0 mac=c8:47:8c:42:88:48
Info:GEN:sta: 1, softap: 0, b/g/n
Info:GEN:sta:rssi=-50,ssid=test,bssid=3a:7a:0e:e3:6b:7e,channel=1,cipher_type:CCMP
Info:MAIN:Time 11, idle 0/s, free 119280, MQTT 0(1), bWifi 1, secondsWithNoPing -1, socks 2/20
Info:MAIN:Time 12, idle 0/s, free 119256, MQTT 0(1), bWifi 1, secondsWithNoPing -1, socks 2/20
Info:MAIN:Time 13, idle 0/s, free 119256, MQTT 0(1), bWifi 1, secondsWithNoPing -1, socks 2/20

Attachments:

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#119 21508572 06 Apr 2025 09:29

divadiow divadiow

Level 38

Topic author Helpful post? (0)

Post #119
21508572 06 Apr 2025 09:29

ah crap. post with dummy file wiped out previous replies this morning.

Added after 3 [minutes]:

insmod wrote:
Is your device alive after reboot with new bootloader? Does OTA work?

in summary, replies said yes. resets, however done, result in a booting device.

OTA works on QIO BL from build and with original older BL from U device
#120 21508603 06 Apr 2025 09:54

p.kaczmarek2 p.kaczmarek2

Moderator Smart Home

Helpful post? (0)

Post #120
21508603 06 Apr 2025 09:54

insmod wrote:

Regarding power save, i think most complex one is for ESP. Up to 4 arguments.
First is default power save(esp_wifi_set_ps), if 1 - WIFI_PS_MIN_MODEM, 2 - WIFI_PS_MAX_MODEM. 0 is WIFI_PS_NONE.
Second is TX power in dBm.
Third and fourth is min frequency and max frequency respectively.
And while powersave for realtek is only 1 argument, in RTL8710B powersave 2 reduces frequency by half, and 3 by quarter.
So, we need 2 more commands? For powersave, make argument 1 for RF, argument 2, if possible, for MCU. One is for TX power, and another for frequency selection.

If it's complicated, we can try something simpler but still user friendly.
Maybe...
Make "PowerSave" and/or "PowerSave 1" (the ones that appears in many posts as recommendation) could be changed into a "smart" powersave. Make it run the best powersave options for current platform. We could even insert a "are BL0937 pins set" check there to automatically choose RF only or RF+MCU PS.
And then other PowerSave options could stay per platform if you think that's necessary.

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

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Topic summary

✨ The discussion centers on the NiceMCU XH-WB3S development board featuring the BK7238 SoC, initially suspected to be BK7231T but confirmed as BK7238. Users share experiences with flashing, testing, and porting firmware, including challenges with encryption keys, flash IDs, and bootloader compatibility. The BK7238 uses 2MB flash with varying encryption keys per chip, complicating universal firmware flashing. Tools like BKFIL and Easy Flasher (EF) are used for backup and restore, with EF supporting full flash erase and restore including bootloader. Flash ID support was extended to include missing flash chips to avoid CRC errors. Arduino SDK and Beken FreeRTOS SDK (version 3.0.70.1 and newer 3.0.76) are referenced for development, with partial support for BK7238 and related chips (BK7231N, BK7231U, BK7252). Porting efforts include adapting delay functions for 160MHz BK7238, resolving flashvars alignment issues due to 64-bit time_t, and addressing HTTP server and TCP socket stability problems in LWIP. OTA updates are functional but require correct image types and bootloader versions. Power save modes and their impact on peripherals like BL0937 energy meter and DS18B20 sensors are discussed, with some instability noted under power save. SPI flashing and UART flashing methods are compared, with SPI preferred for some devices. BK7231U (CC8000 chip) support is emerging, with builds available but some undefined references and boot issues. BK7252 camera module support is experimental, with encrypted flash complicating firmware use. Users report issues with DS18B20 sensor timing on BK7238 due to delay_us inaccuracies, partially fixed by new SDK delay implementations. Logging and MQTT load affect system stability and sensor reading consistency. The community shares flash dumps, toolchain links, and SDK forks to aid development and testing. Overall, the thread provides detailed technical insights into BK7238-based NiceMCU boards' flashing, SDK porting, peripheral support, and firmware development challenges and progress.

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NiceMCU XH-WB3S BK7238 Flashing, Testing, Pinout, Development, Porting

FAQ

TL;DR: A NiceMCU XH-WB3S board (BK7238, 2 MB flash) can run OpenBeken if you erase the whole SPI and re-flash with a CRC-fixed 7238 image; boards cost ≈ US $1.50 each and need >300 mA during Wi-Fi start-up. “Boot loops usually mean undervoltage” [Elektroda, insmod, post #21562748]

Why it matters: Correct flashing and stable power prevent endless reboots and CRC errors.

Quick Facts

• Chipset: BK7238, ARM Cortex-M33, 160 MHz [Elektroda, divadiow, post #21440151] • On-board flash: 2 MB (ID 0x852015) [Elektroda, divadiow, post #21289375] • Dev-board price: US $1–1.5 on AliExpress [Elektroda, insmod, post #21327474] • Recommended supply: 3.3 V @ ≥350 mA during TX bursts [BK72xx DS] • Default UART: 115 200 bps on P0 (UART2) [Elektroda, divadiow, post #21442320]

Why do I get endless CRC-mismatch errors when flashing?

The GUI flasher lacked the Puya 25Q16HB (ID 0x152085) entry, so the chip stayed write-protected and every sector verify failed. Update to BK7231GUIFlashTool ≥v1.9.21 or add the ID manually, then erase and re-flash [Elektroda, p.kaczmarek2, post #21342531]

Which firmware file should I use for the XH-WB3S board?

Use OpenBK7238_QIO_x.xx.xx.bin (or the .rbl OTA file) because the module really contains a BK7238, not a BK7231 [Elektroda, DeDaMrAz, post #21542280]

The board reboots every few seconds—why?

A reboot loop with only the RT-Thread banner usually means the 3.3 V rail dips below 3.0 V when Wi-Fi starts. Provide a stable ≥350 mA source or add a 470 µF capacitor [Elektroda, insmod, post #21562748]

How do I force the bootloader to accept my image?

Check “Overwrite bootloader” in the GUI, flash the CRC-fixed QIO image, then reset. On BK7238 the bootloader sits at 0x0 and refuses un-CRC’d binaries [Elektroda, divadiow, post #21550671]

What is the “No TLV header found in flash” message?

It comes from the SDK’s RF-calibration code; the first boot notices that the RF OTP/TLV partition is empty, writes defaults, then continues. The notice is harmless [Elektroda, p.kaczmarek2, post #21564311]

Why does my custom MAC vanish after reboot?

BK7238 stores the MAC in the RF-OTP/TLV area. Current OpenBeken writes it to config only; on the 7238 it must be written with manual_cal_write_macaddr_to_flash(). Until patched, the chip reloads the factory MAC on cold boot [Elektroda, p.kaczmarek2, post #21564311]

How can I enter Safe-Config mode if AP never appears?

Press or toggle RESET five times within 5 s; the bootloader starts OBK in SafeConfig, creating AP “OpenBK_xxxxxx” even with invalid Wi-Fi data [Elektroda, divadiow, post #21550706]

Power-meter readings jump by 20 V—bug or feature?

Voltage spikes on BL0937 driver occur when heavy logging or MQTT runs. Disable verbose logs (loglevel 0) or MQTT to stabilise readings [Elektroda, insmod, post #21520958]

Fast-Connect flag—what does it do?

FastConnect 1 skips full scan and uses stored BSSID/PSK. It cuts connect time from ≈3 s to 300 ms and saves ≈80 mA∙s per wake-up [Elektroda, insmod, post #21507260]

I only see garbage on UART—correct pins?

UART2 TX (module P0) outputs OBK logs at 115 200 bps. Connect RX of your adapter to P0, 3.3 V tolerant [Elektroda, divadiow, post #21550104]

Edge case: What if I flashed a BK7231 image to BK7238?

The chip shows only the bootloader banner and reboots; re-flash the correct 7238 QIO binary or full 2 MB dump via SPI [Elektroda, divadiow, post #21342237]

3-step How-To: Recover a soft-bricked XH-WB3S

Erase full 0-0x1FFFFF with BKFIL (SPI needed if UART locked). 2. Flash OpenBK7238_QIO_x.bin at 0x0 with “Overwrite bootloader”. 3. Reset; join AP and finish setup—done.