How to set variable BLE device name

RE: How to set variable BLE device name

CodeLoader — Mon, 26 Aug 2019 08:03:40 GMT

Your array with the name is defined like this:

static uint8_t DEVICE_NAME[16];

And you call the function like this:

setGapDeviceName(&DEVICE_NAME);

Note that setGapDeviceName requires a pointer to a value, not a pointer to a pointer. Don't take the address of DEVICE_NAME, it's already an array:

setGapDeviceName(DEVICE_NAME);

RE: How to set variable BLE device name

yokokawa — Mon, 26 Aug 2019 07:36:28 GMT

How do I remove pointer specific warnings?
UICR function is undefined
What is missing?

devzone.nordicsemi.com/.../ble_5F00_app_5F00_uart_2800_20190826_2D005B00_UICR_5D002900_.zip

RE: How to set variable BLE device name

CodeLoader — Fri, 23 Aug 2019 14:33:42 GMT

If your name string is not a constant, it's not a problem. Just cast it to a const pointer and it works:

void setGapDeviceName(char* name) {
    ble_gap_conn_sec_mode_t sec_mode;
    BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode);
    APP_ERROR_CHECK(sd_ble_gap_device_name_set(&sec_mode, (const uint8_t*)name, strlen(name)));
}

Mind that in order to make this name change actually work, you have to re-initialize advertising using ble_advertising_init as in the beginning of the program and start advertising using ble_advertising_stop.

Also, if you are currently advertising, you firstly need to run ble_advertising_stop before reinitializing and restarting.

Lastly, if you are currently connected to the central, you can't run any of these (for example, central sends you a new device name). Raise a flag, and when you receive BLE_ADV_EVT_FAST or whatever you use as the advertising start event, check the flag. If flag is raised, clear it and reinitialize the advertising.

RE: How to set variable BLE device name

yokokawa — Fri, 23 Aug 2019 07:40:32 GMT

I have written a program that uses UICR to remember and call a device name, but I get an error without a function definition.
Please tell me how to fix it.devzone.nordicsemi.com/.../ble_5F00_app_5F00_uart_2800_20190815_2D00_UICR_2900_.zip

RE: How to set variable BLE device name

yokokawa — Tue, 20 Aug 2019 04:52:11 GMT

I want to set the device name with the device name in the variable instead of the constant.

“Sd_ble_gap_device_name_set” needs to be set as a constant.

How can I set the device name in the variable?

RE: How to set variable BLE device name

Kenneth — Mon, 19 Aug 2019 11:44:45 GMT

Check out:

https://devzone.nordicsemi.com/f/nordic-q-a/44513/changing-device-name-dynamically/176001#176001