Could not discover Unkonwn Service of uuid

[475A58]

Hello,

Does anybody know why I can not discover the service uuid as shown in the picture below?

I want to connect a sensor with this chip nRF52832, it's service UUID is 0000fff0-0000-1000-8000-00805f9b34fb. I can scan into sensor and connect with it. But I can not discover this service.

The protocol stack version I use is nRF5_SDK_17.0.2_d674dde，the program I use is nRF5_SDK_17.0.2_d674dde\examples\ble_central. I changed the service UUID to discover-> NUS_BASE_UUID to 0000fff0-0000-1000-8000-00805f9b34fb.  I can't discover it.

Thank you,

[Susheel Nuguru]

Sure, here you go
4578.ble_app_uart_c.zip

replace ble_nus_c.h with the file below.

8814.ble_nus_c.h

Like I showed you in the log file, everything seems to work properly at my end.

[475A58]

Thank you for your answer, but I still can't discover the primary service of the device. Do I need to delay the operation of the discovery service after connecting to the device?

[475A58]

I've tried to find the service with a 600ms delay after connecting. But it didn't work. I did the debugging and the debugging information is as follows.

When the code executes to this function on_primary_srv_discovery_rsp，it found the services of 0XFFF0 UUID.

But p_ble_gattc_evt->gatt_status value is 0X010A, so the code executes to else.

Do you know Do you know why this is so？

[Susheel Nuguru]

I did not add any delays to start the discovery service. I missed to see that you are using nRF52832 and tested this on nRF52840 with S140 on it. But it should not make a difference in the code when the project is used for nRF52832.

I do not understand why the project is working for me and not at your end. Are you using a custom hardware? If you are using nRF52832 DK, then I can compile the project for 52832 this week and send it to you.

[475A58]

Yes, I used nRF52832 to make a PCB board as a Bluetooth host to connect a specific Bluetooth sensor. As mentioned earlier, it can connect to the sensor, but it cannot discover the services it contains. Do you know why p_ble_gattc_evt->gatt_status value is 0X010A?

I'm using nRF52832DK, can you test the 52832 and send it to me if you can? Because I'm in a bit of a hurry.

[475A58]

By the way, do you have KEIL on your computer? I'm not very good at IAR. So I would appreciate it if you sent me KEIL's project. It doesn't matter if not.