BLE multiple services and characteristics not working, error code 4 after service_init() function

[Namdev]

Hello,

I am new to Nordic platform, previously i had worked on TI controller.

I have three questions to ask:

1) My firmware consists of four services, each service has around 8-10 characterisitics. Now i have initialized four services. Its working fine and i am able to see the service list in nRF connect.

I start adding characteristics to the service, say) i have added 4 characteristics in each service it works fine. If i add one more characteristic in any of the service it starts going to  app_error_fault_handler(NRF_FAULT_ID_SDK_ERROR, 0, (uint32_t)(&error_info)); function.

2) I have read this tutorial found in github and implementing the same: 

https://github.com/bjornspockeli/custom_ble_service_example

Here we are asked to increase the RAM size when we add vendor specific UUID. can someone explain me if there is any equation or measurable parameter on how much RAM should be increased? How much RAM does each service consume. I use 128 bit UUID.

3) I have also increased the vendor_count to 4 but still its causing problem. 

I hope to receive a response in the earliest as i am in a critical stage.

Thanks & regards

Namdev Nayak

[Simonr]

Hi Namdev

What function is it that returns this error? Try stepping through the code in order to see which function it is that returns error code 4.

You can check out this and this link in order to check that you're adding multiple characteristics/services to your application correctly.

Best regards,

Simon

[Namdev]

in the service init the last function which is getting initialized returns the error. if i add an extra characterisitic to any of the service. 

I personally feel i need to increase the RAM size but i am still not sure why we need to improve the RAM size. i am just adding the multiple characterisitics under a service. 

I have implemented in the same way as mentioned in the other question posted in the forum.