how do i read integer data on the nrfcloud?Can u give some example code to get me started?

[Liverpool007]

I want to read integer data on the cloud for example int a=1001; This value must be displayed on the cloud service after every 5 seconds.Also i want to increament the value when i press the button connected to pin P1.10 that is when it reads a pulse from port P1.01. Please help.

[Jørgen Holmefjord]

Hi,

You can create a custom service that will send a notification on every variable change, or every 5 seconds if you want (controlled by a timer). We have some tutorials on creating custom services/characteristics here on DevZone, but they are a bit outdated. This GitHub page contains an updated tutorial that support SDK 14 and nRF52840.

For incrementing the variable using buttons, you can use the app_button library. This page describe how this can be done. Note that there is a bug in the SDK that that makes GPIOs on Port 1 on nRF52840 not work with the Button handler library.

Best regards,

Jørgen

[Liverpool007]

ok thanks i will look into it.

[Liverpool007]

I followed the link and could send data to the nrfconnect app.But once i added the interrupt funtion to count the number of button press(pulses) the code was not working I am getting an errror 8[NRF_ERROR_INVALID_STATE] it happens when i add the gpio_init(); funtion here is the code

[Jørgen Holmefjord]

There are (at least) two functions inside gpio_init() that can return error code 8 (NRF_ERROR_INVALID_STATE); nrf_drv_gpiote_init() and nrf_drv_gpiote_in_init(). Please check which function is returning the error. If it is nrf_drv_gpiote_init that returns the error, please search your project for other functions/libraries that are using the GPIOTE driver. If nrf_drv_gpiote_in_init is returning this error, please make sure this pin is not for anything else in your application.

[Liverpool007]

i tried using another pin as input instead of button 3 but i am getting same error. please help i can confirm that

nrf_drv_gpiote_init() is causing the error.but i dont know how to resolve it.

[Jørgen Holmefjord]

Please search your entire project for other functions calling nrf_drv_gpiote_init(). If GPIOTE is already initialized, you should be able to use it without calling the init function.