sd_ble_enable() returned ERROR 4 [NRF_ERROR_NO_MEM] at :0

RE: sd_ble_enable() returned ERROR 4 [NRF_ERROR_NO_MEM] at :0

awneil — Mon, 05 Oct 2020 09:34:40 GMT

For the benefit of others who may have similar issues, and find this - please describe what the mistake was, how you found it, and how you fixed it.

RE: sd_ble_enable() returned ERROR 4 [NRF_ERROR_NO_MEM] at :0

Hiroyuki Kanai — Mon, 05 Oct 2020 04:22:02 GMT

I found a minor mistake, it works!!

Thank you

RE: sd_ble_enable() returned ERROR 4 [NRF_ERROR_NO_MEM] at :0

Hiroyuki Kanai — Mon, 05 Oct 2020 00:48:01 GMT

00> <warning> nrf_sdh_ble: Insufficient RAM allocated for the SoftDevice.
00> 
00> <warning> nrf_sdh_ble: Change the RAM start location from 0x20002300 to 0x20002588.
00> 
00> <warning> nrf_sdh_ble: Maximum RAM size for application is 0x3DA78.
00> 
00> <error> nrf_sdh_ble: sd_ble_enable() returned NRF_ERROR_NO_MEM.
00> 
00> <error> app: ERROR 4 [NRF_ERROR_NO_MEM] at :0
00> 
00> PC at: 0x00000000
00> 
00> <error> app: End of error report

Your advice seems correct, when I enable Warning and check the message, it looks like this.

I edited the linker script and changed the start address.

However, as a result, nothing worked.

Something seems wrong ... I'm currently looking for the cause.

RE: sd_ble_enable() returned ERROR 4 [NRF_ERROR_NO_MEM] at :0

awneil — Fri, 02 Oct 2020 15:56:14 GMT

[quote userid="15146" url="~/f/nordic-q-a/66635/sd_ble_enable-returned-error-4-nrf_error_no_mem-at-0/272777#272777"]you should see something like this[/quote]

You need to ensure that you have 'warning' level messages enabled

RE: sd_ble_enable() returned ERROR 4 [NRF_ERROR_NO_MEM] at :0

Sigurd — Fri, 02 Oct 2020 15:00:44 GMT

If you have not allocated enough memory to the SoftDevice, you should see something like this:

<info> app_timer: RTC: initialized.
<warning> nrf_sdh_ble: Insufficient RAM allocated for the SoftDevice.
<warning> nrf_sdh_ble: Change the RAM start location from 0x20002AE8 to 0x20002BF0.
<warning> nrf_sdh_ble: Maximum RAM size for application is 0x1D410.
<error> nrf_sdh_ble: sd_ble_enable() returned NRF_ERROR_NO_MEM.
<error> app: ERROR 4 [NRF_ERROR_NO_MEM] at C:\nRF5 SDK\nRF5_SDK_17.0.2\examples\ble_peripheral\ble_app_uart\main.c:442
PC at: 0x0003016B
<error> app: End of error report

Then you need to allocate the memory according to what it requires.

RE: sd_ble_enable() returned ERROR 4 [NRF_ERROR_NO_MEM] at :0

awneil — Fri, 02 Oct 2020 09:41:35 GMT

[quote userid="93042" url="~/f/nordic-q-a/66635/sd_ble_enable-returned-error-4-nrf_error_no_mem-at-0"]includes custom services[/quote]

Custom services do consume memory - so you do need to adjust your linker settings accordingly.

IIRC, there is no specific definition or calculation of how much memory an individual Service or Characteristic takes - it's just a matter of trial & error.

😞

I think there was a thread about this a while ago ...