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Why is UUID in wrong order?

Adam

Hi,

This time I am trying to work out the UART example.

I got it to the point where it is advertising, but the advertisement is wrong.

When I check with an Android phone, the advertisement data is all the way around. This should be the advertised one: 6E400001-B5A3-F393-E0A9-E50E24DCCA9E And the received one: 9eca0001-0ee5-a9e0-93f3-a3b50100406e

I followed this thread but it did not help.

I tried modifying the advertisement data in the ble_nus_init:

ble_uuid128_t nus_base_uuid = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};

ble_uuid128_t nus_base_uuid = {0x9E, 0xCA, 0xDC, 0x24, 0x0E, 0xE5, 0xA9, 0xE0, 0x93, 0xF3, 0xA3, 0xB5, 0x00, 0x00, 0x40, 0x6E};

ble_uuid128_t nus_base_uuid = {0x6E, 0x40, 0x00, 0x00, 0xB5, 0xA3, 0xF3, 0x93, 0xE0, 0xA9, 0xE5, 0x0E, 0x24, 0xDC, 0xCA, 0x9E};

But the received advertisement data always stayed the same. The ble_nus functions are coming from this site. The main function is a modified of that (removed all the parts, only kept the service_init and the advertisement_init).

Thanks for the help!

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  • 0

    This sounds very strange. If you modify the nus_base_uuid you should definitely see a change in the master control panel on your phone. Also, if all you have in the main function is service_init and advertisement_init, you shouldnt even be able to see the device at all. Are you sure you are flashing the correct file, and that the project compiles? (If it doesn't compile, it will flash the old hex file with the old UUID)

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  • 0

    This sounds very strange. If you modify the nus_base_uuid you should definitely see a change in the master control panel on your phone. Also, if all you have in the main function is service_init and advertisement_init, you shouldnt even be able to see the device at all. Are you sure you are flashing the correct file, and that the project compiles? (If it doesn't compile, it will flash the old hex file with the old UUID)

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