Ble Adv - from Linux Zephyr to Windows platformio Zephyr

[tcpipchip]

Hello Platformio Team!

I have using for a long time the Zephyr on Linux! All working very fine, i can include and build i2c devices, like the BME280, using Kconfig (make menuconfig)

After read that Platformio team started to port Zephyr to Platformio, i get interested to see if works, and yes, works! Compiled some Ble examples and runs well!

Now, i having problems to enable to use the I2c library and then the BME280, got error, not recognize the existence of them.

Here th GITHUB.

https://github.com/tcpipchip/zephyr_linux_to_platfomio

Can you compile and make the changes to compile ? Or give tips!

Thank you so much and again congratulation to the Platformio team and support!

[valeros]

Hi @tcpipchip ! What version of Zephyr framework do you use on Linux?

[tcpipchip]

Hi, 2.1 I am backing to PLATFORMIO, i can run 100% BLE ADV stack, but now success to access the BLE280, can you help me ?

[valeros]

Not sure how you're able to compile this project on Linux, but it looks like the driver for BME280 sensor relies on specific device tree configuration in order to select the correct communication bus. You need to specify which bus to use in your board_name.overlay file, e.g. for nrf52832_mdk board you need to create a new file nrf52832_mdk.overlay in zephyr folder with the following contents (I used I2C0 since you selected it in prj.conf):

&i2c0 {
        bme280@76 {
                compatible = "bosch,bme280";
                label = "BME280";
                reg = <0x76>;
        };
};

[tcpipchip]

hi @valeros

Something like this ?

Looks that will program the GPIO 30 and GPIO 31 be the I2C.

Are those parameters enough ?

and reg = <0x40003000 0x1000>; clock-frequency = <100000>; compatible = "nordic,nrf-twi"; status = "okay";

?

[valeros]

@tcpipchip We don't provide here support for framework configuration process, but if this overlay works fine with Zephyr on Linux, it should work with PlatformIO as well.

[tcpipchip]

ok, thanks @valeros

[GeorgeGkinis]

I have the same issue. I am using Windows10, clion with platformio plugin.

My platformio.ini file :

[env:nrf52_dk]
platform = nordicnrf52
board = nrf52_dk
framework = zephyr

debug_tool = jlink
; SWD interface
upload_protocol = jlink

my zephyr/nrf52_dk.overlay :

&i2c0 {
    bme280@76 {
        compatible = "bosch,bme280";
        reg = <0x76>;
        label = "BME280";
    };
};

output :

Compiling .pio\build\nrf52_dk\bme280\bme280.c.o
In file included from C:\Users\dbkggk\.platformio\packages\framework-zephyr\drivers\sensor\bme280\bme280.c:24:
C:\Users\dbkggk\.platformio\packages\framework-zephyr\drivers\sensor\bme280\bme280.h:111:2: error: #error "BME280 device type not specified"

Any help?

[valeros]

Hi @GeorgeGkinis ! You need to name your overlay file according to the official board name used in Zephyr framework, e.g. nrf52_pca10040.overlay

[tcpipchip]

@GeorgeGkinis

Let me know if you get success !

and where did you config the GPIOS used to BME280 ?

[GeorgeGkinis]

Actually it works with nrf52_pca10040.overlay thanks!

I used the default pins from

https://github.com/zephyrproject-rtos/zephyr/blob/master/boards/arm/nrf52_pca10040/nrf52_pca10040.dts

I have plugged the bme280 on i2c0 pins :

arduino_i2c: &i2c0 {
    compatible = "nordic,nrf-twi";
    status = "okay";
    sda-pin = <26>;
    scl-pin = <27>;
};

It builds and runs, but cannot make a connection with the bme280.

    struct device *dev = device_get_binding("BME280");

    if (dev == NULL) {
        printk("Could not get BME280 device\n");
        return;
    }

I get Could not get BME280 device

Are there any more things beside checking my wiring i should consider?

[tcpipchip]

I had the same problem too! On linux worked fine!

[GeorgeGkinis]

Filthy cables.

It works!

Thanks for the support @valeros

[tcpipchip]

can you share your github platformio project ?

[tcpipchip]

it´s working :) Very very good!!!!!

[tcpipchip]

Sir, i am using the BME280, where i define on Plaftormio the BME280_TEMP_OVER_1X to default value ?

[valeros]

You can set it directly in your prj.conf.

[tcpipchip]

i set on Kconfig and works!

@valeros

Can you help me now how to disable the UART perifpheral or something else to get low power ?

My ZEPHYR RTOS BLE is getting 75uA comsuption...too much!

Thanks

[valeros]

No, sorry. But you can read more about Zephyr power management here https://docs.zephyrproject.org/latest/reference/power_management/index.html