128 bit uuid count problem in sdk12

RE: 128 bit uuid count problem in sdk12

Raj — Fri, 18 Nov 2016 10:33:20 GMT

@sigurd yes, when I increase the vs_uuid_count = BLE_UUID_VS_COUNT_DEFAULT sd_ble_enable() gives error as NRF_ERROR_NO_MEM with ram start address 0x200021E8. After changing application ram start address to 0x20002078 it working well

RE: 128 bit uuid count problem in sdk12

Sigurd — Thu, 17 Nov 2016 13:33:25 GMT

The vs_uuid_count is used to determine how much RAM to allocated to the SoftDevice. With the increase in the attribute table size and with vs_uuid_count=2, you will not have enough RAM for the SoftDevice with 0x200021E8. Increase the number to e.g. start:0x20002500 with size:0x5B00 and it should work.

For information on how to add your own services, I recommend the BLE Services tutorial.

RE: 128 bit uuid count problem in sdk12

Raj — Wed, 16 Nov 2016 09:48:24 GMT

I'm not adding 2x128 uuids in advertsing data. just I'm adding a two services in my project which have 128 bit uuids. And I tried in ble_app_template project without adding or changing anything from original sdk12 source just I increased vs_uuid_count from 1 to 2 then it also not advertising. If I change vs_uuid_count I need to change anything else?

RE: 128 bit uuid count problem in sdk12

Raj — Wed, 16 Nov 2016 09:36:27 GMT

I'm using eclipise and I increased attribute table size to 0x780 and also changed ram settings according to it but it still not advertsing.

vs_uuid_count = BLE_UUID_VS_COUNT_DEFAULT Attribute table size is 0x780 Ram and flash settings are FLASH (rx) : ORIGIN = 0x1b000, LENGTH = 0x25000 RAM (rwx) : ORIGIN = 0x200021E8, LENGTH = 0x5e18

if vs_uuid_count =1 it advertising.

RE: 128 bit uuid count problem in sdk12

Roger Clark — Wed, 16 Nov 2016 04:59:51 GMT

I don't think there is room in the advertising packet for 2 x 128 bit services ?

A 128 bit service UUID takes 16 bytes, the whole advertising packet is only 31 bytes long.

2 x 16 = 32.

So it won't fit.

Why do you need 2 x 128 bit services ? Can you add multiple profiles to the same service

RE: 128 bit uuid count problem in sdk12

Sergy — Tue, 15 Nov 2016 20:41:35 GMT

did you change IRAM settings accordingly if you use Keil?