logo elektroda
logo elektroda
X
logo elektroda
Advanced Search
logo elektroda

Integrating BME280 Sensor with OpenBK on WB2S Modules for Home Automation

bilbs84 4509 75
ADVERTISEMENT
Reply | New topic
  • #31 20889503
    Alexpress
    Level 2  

    Hello and greetings to all. I am in the same case as my colleague bilbs84. The problem is that I am even newer to this and I have several WB2S modules, with OpenOBK installed and I want to integrate BME680 sensors and have these readings in Home Assistant. But no matter how much I have read on the internet, I don't see an easy way, for a beginner. Thanks again for your answers and greetings.
    P.S. Sorry for my English language, but I use a translator.
  • ADVERTISEMENT
  • #32 20889667
    p.kaczmarek2
    Moderator Smart Home  
    BME680 or BME280? I haven't seen BME680 yet, I would need to buy one and try.
    Helpful post? Buy me a coffee.
  • ADVERTISEMENT
  • #33 20890106
    Alexpress
    Level 2  

    Thanks for answering. It is BME680, which has some more features than 280. I bought them on Aliexpress at a good price, with the intention of integrating it with an ESP32 in home assistant, but since I have several CB2S with OpenBK, I wanted to see if it is possible.
    Here is a photo with the tests and Aliexpress link. BME680 and CB2S modules connected by wires on a white background.
    Greetings!

    https://es.aliexpress.com/item/10050059703827...t_main.11.21ef194dbFEnlm&gatewayAdapt=glo2esp
  • ADVERTISEMENT
  • #34 20945270
    Osrx
    Level 5  

    Why did you take off the BMP280 driver code from current releases of OBK?
    I think it worked rather well for me. And I started trying to use it on my OpenBK7231N. =(

    Thank you for your work anyway! =)
  • ADVERTISEMENT
  • #35 20945538
    p.kaczmarek2
    Moderator Smart Home  
    I apologize for the confusion. The code is still here, but the driver may be disabled because we are slowly running out of the flash memory.

    If you want to get a build with BME280 driver, you need to add:
    Code: text Expand Select all Copy to clipboard
    
#define ENABLE_DRIVER_BMP280 1

    to obk_config.h .
    Alternatively, I can do the same for you, here:
    https://github.com/openshwprojects/OpenBK7231T_App/pull/1064
    Once it builds, you can click into build results, scroll down to "Summary" and click "Download artifacts" to get a binary file with BMP280 support
    Helpful post? Buy me a coffee.
  • #37 20990186
    p.kaczmarek2
    Moderator Smart Home  
    I apologize for the issue. It seems that something have randomly broken on Github:
    Code: text Expand Select all Copy to clipboard
    
../toolchain/gcc-arm-none-eabi-4_9-2015q1/bin/arm-none-eabi-objcopy -O binary ../../../apps/OpenBK7231T/output/BMP280-driver-enabled-fork_83eb11c040fc/OpenBK7231T_BMP280-driver-enabled-fork_83eb11c040fc.axf ../../../apps/OpenBK7231T/output/BMP280-driver-enabled-fork_83eb11c040fc/OpenBK7231T_BMP280-driver-enabled-fork_83eb11c040fc.bin
make[3]: Leaving directory '/home/runner/work/OpenBK7231T_App/OpenBK7231T_App/sdk/OpenBK7231T/platforms/bk7231t/bk7231t_os'
make[2]: Leaving directory '/home/runner/work/OpenBK7231T_App/OpenBK7231T_App/sdk/OpenBK7231T/platforms/bk7231t/bk7231t_os'
Start Combined
Combined will do cd
Combined will do OTAFIX
Combined will do ENCRYPT
/**< @author <jiewu@bekencorp.com> */
/**< @version v0.3.1 */
 encrypt without crc successfully!
 -file size: 0xc6df0
Combined will do mpytools.py
{
    "count": 4,
    "magic": "RT-Thread",
    "section": [
        {
            "firmware": "bootloader_enc.bin",
            "partition": "bootloader",
            "size": "68K",
            "start_addr": "0x00000000",
            "version": "1.00"
        },
        {
            "firmware": "OpenBK7231T_BMP280-driver-enabled-fork_83eb11c040fc_enc.bin",
            "partition": "app",
            "size": "978944",
            "start_addr": "0x00011000",
            "version": "1.00"
        }
    ],
    "version": "0.1"
}
Combined will do BEKEN_PACK
beken packager V2.1.0
Shanghai Real-Thread Electronic Technology Co.,Ltd
Linux-5.15.0-1057-azure-x86_64-with-Ubuntu-20.04-focal

load_config: config.json

partition    flash_name       phy addr   size       logic addr size       file
------------ ---------------- ---------- ---------- ---------- ---------- ----------------
bootloader   beken_onchip_crc 0x00000000 68K        0x00000000 64K        bootloader_enc.bin
app          beken_onchip_crc 0x00011000 956K       0x00010000 921359     OpenBK7231T_BMP280-driver-enabled-fork_83eb11c040fc_enc.bin

image size: 1024 KB
image name: all_1.00.bin

export app partition image: OpenBK7231T_BMP280-driver-enabled-fork_83eb11c040fc_enc_uart_1.00.bin

time: 0.95s
Good bye!
End Combined
generate ota file
malloc(): corrupted top size
Aborted (core dumped)
make[1]: *** [Makefile:107: build-BK7231] Error 134
make[1]: Leaving directory '/home/runner/work/OpenBK7231T_App/OpenBK7231T_App'
make: *** [Makefile:80: OpenBK7231T] Error 2
Error: Process completed with exit code 2.

    This is very strange! I don't know why it failed.

    I've recreated PR and here it is, it's working. Strange indeed:
    https://github.com/openshwprojects/OpenBK7231T_App/pull/1111/files

    Now you can download build files from that PR.
    Helpful post? Buy me a coffee.
  • #38 21010592
    olekwal
    Level 6  

    Hello,
    Can this BME280 controller also be enabled in BL602? I would like to use the rx and tx pins for this (i2c to the sensor), I do not use them in "normal" mode. Is this even possible? And do you have to compile it yourself or is this driver included in normal builds?

    Thank you for the information.
  • #39 21010867
    p.kaczmarek2
    Moderator Smart Home  
    BL602 is low on memory, BMP280 is not enabled there. You need to enable it and compile it yourself. Here is the configuration file:
    https://github.com/openshwprojects/OpenBK7231T_App/blob/main/src/obk_config.h
    Here is #define:
    Code: text Expand Select all Copy to clipboard
    
//#define ENABLE_DRIVER_BMP280 1

    Here is an instruction to compile online on Github without installing anything on your computer:
    OpenBeken online builds system - firmware compilation for all platforms on Github
    Additionally, you may need to add missing files to the Makefile, but that will come out in the end. Try it, I`ll help you if you need it.
    Helpful post? Buy me a coffee.
  • #40 21011595
    olekwal
    Level 6  

    Oh, something`s not working for me....

    I forked the project, changed "#define ENABLE_DRIVER_BMP280 1" to "#define ENABLE_DRIVER_BMP280 1" in the obk_config.h file. It compiles without errors (this compiling function on GitHub is amazing, I wonder who pays for it...), I uploaded it to magichome with BL602.:
    In the webapp I enter: "startDriver BMP280 0 1 1 2" (I`m not sure about the pins, but this is a later issue)
    Quote:
    Info:MAIN :D river BMP280 is not known in this build.
    Info:MAIN:Available drivers:
    Info:MAIN:NTP
    Info:MAIN:, RN8209
    Info:MAIN:, BL0942
    Info:MAIN:, BL0937
    Info:MAIN:, CSE7766
    Info:MAIN:, DDP
    Info:MAIN:, SSDP
    Info:MAIN:, DGR
    Info:MAIN:, Wemo
    Info:MAIN:, SM2135
    Info:MAIN:, BP5758D
    Info:MAIN:, BP1658CJ
    Info:MAIN:, SM2235
    Info:CMD:[WebApp Cmd `startDriver BMP280 0 1 1 2` Result] OK


    ... looks like there is no driver.

    Second attempt: I looked at the obk_config.h file: there is its own part for BL602, so I added the driver there:
    Quote:
    #elif PLATFORM_BL602

    // I have enabled drivers on BL602
    #define ENABLE_TASMOTADEVICEGROUPS 1
    #define ENABLE_NTP 1
    #define ENABLE_DRIVER_LED 1
    //#define ENABLE_DRIVER_BL0937 1
    //#define ENABLE_DRIVER_BL0942 1
    //#define ENABLE_DRIVER_CSE7766 1
    #define ENABLE_DRIVER_WEMO 1
    #define ENABLE_DRIVER_BMP280 1


    Compilation without errors, but "Info:MAIN :D river BMP280 is not known in this build."

    Third attempt: I took the compiler from here: https://github.com/openshwprojects/OpenBK7231T_App/pull/1111 - I uploaded it, unfortunately the same thing again: "Driver BMP280 is not known in this build"

    It seems that the "#define ENABLE_DRIVER_BMP280 1" option is ignored when building the binary for BL602....
    Should the driver start like this? "startDriver BMP280 xx 1 2"?
  • #41 21011607
    p.kaczmarek2
    Moderator Smart Home  
    This is strange, maybe something is missing. BL602 is rare and I`m only one person and it`s hard to understand such a large open source project.
    Then I`ll try it myself, here`s my PR:
    https://github.com/openshwprojects/OpenBK7231T_App/pull/1133
    It`s compiling now, in fifteen minutes I`ll check whether the compilation was successful or not. You may need to add something to the Makefile.

    Additionally, I would also be a bit afraid that the BMP280 would exceed the size of the OTA on the BL602 and there would be a problem with the update, but we`ll see.

    Added after 1 [minutes]:

    PS: And this:
    olekwal wrote:

    3rd attempt: I took the compiler from tad: https://github.com/openshwprojects/OpenBK7231T_App/pull/1111 - I uploaded it, unfortunately the same thing again: "Driver BMP280 is not known in this build"

    it 100% does not work on BL602, because the above PR is me who turned on BMP280 on the BK7231 platform. BK7231 is a separate platform. You have to look in obk_config.h for which platform you are enabling, because we support 5 platforms already (BK7231 two versions, W600, W800, BL602, XR809, LN882H and Windows... oh, that`s more than 5)

    Added after 8 [minutes]:

    I found the problem:
    Screenshot of a source code snippet in a text editor.
    Helpful post? Buy me a coffee.
  • #42 21011634
    olekwal
    Level 6  

    No, it's like yesterday (2nd attempt)

    There is apparently no problem with the build, it also works, after the update I have a new build number (Build: Build on Mar 20 2024 08:40:07 version bl602-bmp_0204362d2fcd)

    But when I type "startDriver BMP280 0 1 1 2" in the Logs section in the new webapp, I get:
    Quote:
    Info:MAIN :Driver BMP280 is not known in this build.
    Info:MAIN:Available drivers:
    Info:MAIN:NTP
    Info:MAIN:, RN8209
    Info:MAIN:, BL0942
    Info:MAIN:, BL0937
    Info:MAIN:, CSE7766
    Info:MAIN:, DDP
    Info:MAIN:, SSDP
    Info:MAIN:, DGR
    Info:MAIN:, Wemo
    Info:MAIN:, SM2135
    Info:MAIN:, BP5758D
    Info:MAIN:, BP1658CJ
    Info:MAIN:, SM2235
    Info:CMD:[WebApp Cmd `startDriver BMP280 0 1 1 2` Result] OK


    But really, it's not that important, it's more of a gimmickry, so there's no point in wasting your precious time on it.


    After update:
    Oh, I see. then this driver simply does not exist for bl602. At least everything is clear now :)
  • #43 21011662
    p.kaczmarek2
    Moderator Smart Home  
    This controller uses I2C software, it should work with BL602 without any problems, have you checked the latest version from my PR?
    Helpful post? Buy me a coffee.
  • #44 21011686
    olekwal
    Level 6  
    yes, now I can load the driver.

    do you know what pins are rx and tx on bl602? I started looking for it, but I think I`ll miss it...
    oh, and one more thing: when using bme280 I have "info:SENSOR:BMx280 wrong ID!" but I read that the controller itself looks for the appropriate ID, so it`s just a matter of finding the right pins?

    OK: Update, I found the pins, (on bl602: p16 - scl; p7 -sda) everything works, great!
    what bmE280 still lacks is humidity. When I have some time, I`ll try to look at the code myself.

    Added after 2 [hours] 1 [minutes]:

    One more thing:

    How to change the measurement frequency? for now it measures (and sends via mqtt) every second...
  • #45 21012263
    p.kaczmarek2
    Moderator Smart Home  
    Sorry. I didn`t get a notification after editing. You wrote earlier that it doesn`t publish on MQTT, but does it work?
    From what I can see, the measurement is actually made every second, to limit this I can add a few lines on the spot and give you a PR with it to download the ready binaries.
    Helpful post? Buy me a coffee.
  • #46 21013338
    olekwal
    Level 6  

    No problem. MQTT works. I just had to learn how openbk works. What is not optimal is: I set Temperature to channel 6 and pressure to channel 7. In channel types I set Temp_div100 to 6 and Pressure_div100 to 7 and the data format also matches on the web page. MQTT ignores this /100 - i.e. data enters "raw" via mqtt - e.g. 2660 instead of 26.60. But this is a detail - I can also do division by 100 on openhab.

    As for the bmp280 driver. If it was possible to change/add "startDriver BMP280 [CLK] [DATA] [ChannelForTemp] [ChannelForPressure]" with an additional field for the measurement frequency - e.g. "[measurementInterval] " in seconds, it would be perfect. hard-coded is also possible, I think it will be enough if it measures every 5 minutes, it makes a lot of noise every second....
  • #47 21013349
    p.kaczmarek2
    Moderator Smart Home  
    There is a flag on the divider. It`s all because of the TuyaMCU standard that we based on at the beginning. Turn on:
    Screenshot of a feature list with a highlighted MQTT feature: Apply channel type multiplier on channel value before publishing it.


    I`m wondering whether I should try to add some universal solution, maybe, for example, it would be possible to change the driver tick period, which is now one second
    Helpful post? Buy me a coffee.
  • #48 21013368
    olekwal
    Level 6  

    Ah, great. Thank you for the tip from there flag33.

    As for the driver tick. I just think it can`t be a global mindset. In my project it would be indifferent, but if you want to measure current and temperature, for example, different distances are needed...
  • #49 21013378
    p.kaczmarek2
    Moderator Smart Home  
    You can give a tick per driver, it`s certainly better than adding a separate command for each driver for the measurement period.

    To be something like this
    Code: text Expand Select all Copy to clipboard
    
drvTick BMP280 60

    then the measurement would be triggered every 60 seconds
    Helpful post? Buy me a coffee.
  • #51 21026799
    divadiow
    Level 34  
    I have a BMP280/AHT20 combined sensor module.

    Combined sensor module BMP280/AHT20 with Feiyang logo.
    Does anyone know if this should work with the BMP280 PR? I couldn't get an i2c result in soft scan previously and wondered if that was because of the two sensors. Also, does OBK have an AHT20 driver? I tried all the others but no results.


    Both sensors work in Tasmota so the module itself is operational.
  • #52 21054355
    divadiow
    Level 34  
    hmmm

    Screen showing error messages for BMP280 sensor.

    startDriver BMP280 16 7 01

    Info:SENSOR:BMx280 wrong ID!
    Info:SENSOR:BMP280 failed!
    Info:MAIN:Started BMP280.
  • #53 21054975
    p.kaczmarek2
    Moderator Smart Home  
    There is a PR with AHT sensor, but you are already aware about it I guess: https://github.com/openshwprojects/OpenBK7231T_App/pull/1187
    Regarding BMP280, are you sure you got GPIO correctly?
    Helpful post? Buy me a coffee.
  • #55 21072813
    divadiow
    Level 34  
    So I'm not sure where the 0x58 ID for BME/BMP280 came from but the consensus Googling around is that the BME/BMP280 and BME680 are mostly 0x77.

    My BMP280/AHT20 module is 0x77 and so is the BME680 I have.

    The AHT20 on my combined module is actually not operational - no detection of second address in Tasmota or OBK scan, but Tasmota BMP280 driver does work. I also bought a standalone BMP280 but it's DOA.

    I've tried this PR but I'm still getting wrong ID reported. ;/

    https://github.com/openshwprojects/OpenBK7231T_App/pull/1213

    Added after 52 [minutes]:

    can the this have multiple values

    Code: Text
    Log in, to see the code


    eg

    can the this have multiple values

    Code: Text
    Log in, to see the code


    I guess I could try. I will

    Added after 2 [hours] 53 [minutes]:

    Nevermind. I was not aware of the difference between chip ID and i2c address.
  • #57 21080397
    p.kaczmarek2
    Moderator Smart Home  
    Merged, but first I disabled it in obk_config.h, if you need a new binary, open new PR
    Helpful post? Buy me a coffee.
  • #58 21080410
    divadiow
    Level 34  
    Oh cool. Thanks. Yes, would have expected to make PR for updated binary.
  • #59 21080988
    p.kaczmarek2
    Moderator Smart Home  
    I've seen there is a new PR with BME280 support update, have you tried that @divadiow ?
    Helpful post? Buy me a coffee.
  • #60 21081004
    divadiow
    Level 34  
    I saw the new PR yes but I do not have a BME280 yet. I ordered one but it was definitely DOA. I keep meaning to order another.
Reply | New topic
Report a violation of the law

Topic summary

The discussion revolves around integrating the BME280 sensor with OpenBK firmware on WB2S modules for home automation. A user seeks guidance on utilizing their BME280 sensors with OpenBeken, expressing a lack of examples and knowledge about software-defined I2C. Contributors share their progress in porting drivers, troubleshooting issues related to sensor IDs, and implementing temperature, pressure, and humidity readings. They discuss the need for proper scaling in Home Assistant (HA) and the possibility of adjusting measurement intervals. The conversation also touches on the compatibility of BME680 sensors and the challenges faced in enabling drivers for different platforms, including BL602. Overall, the community collaborates to enhance sensor functionality and integration with home automation systems.
Summary generated by the language model.
Popular Topics
ADVERTISEMENT