External Crystal is not enabled in nRF51822- QFAB

RE: External Crystal is not enabled in nRF51822- QFAB

Vidar Berg — Wed, 06 Feb 2019 10:09:45 GMT

Are you able to debug the application to see if the program gets past this line:

while (NRF_CLOCK->EVENTS_HFCLKSTARTED == 0)
{
// Wait for started event to occur. Note: will spin forever if crystal isnt working
__NOP();}?

Also, did you verify the load capacitance?

RE: External Crystal is not enabled in nRF51822- QFAB

bhaskarch — Tue, 05 Feb 2019 11:36:35 GMT

Hello,

I added bellow instruction in main.

External crystal is working i.e 16 Mhz.

But I loaded Beacon program and ble_app_beacon_w_softdevice.hex .

Then Crystal and Bluetooth is not working.

NRF_CLOCK->EVENTS_HFCLKSTARTED = 0;
NRF_CLOCK->TASKS_HFCLKSTART = 1;
//NRF_CLOCK->XTALFREQ = CLOCK_XTALFREQ_XTALFREQ_16MHz;
while (NRF_CLOCK->EVENTS_HFCLKSTARTED == 0)
{
// Wait for started event to occur. Note: will spin forever if crystal isnt working
__NOP();
}

RE: External Crystal is not enabled in nRF51822- QFAB

Vidar Berg — Tue, 05 Feb 2019 10:55:14 GMT

Hello,

Have you verified that your load capacitances corresponds with the load capacitance of your crystal ( for more details, see Crystal and load capacitors)? Not sure how you determine that the crystal is not working, but note that the softdevice keeps it off in idle mode so it won't be running all the time.

RE: External Crystal is not enabled in nRF51822- QFAB

bhaskarch — Sat, 02 Feb 2019 11:22:06 GMT

Hello Vidar Berg,

I loaded ble_app_beacon_w_softdevice.hex in nRF51822 QFAB custom board.

But Bluetooth is not Enabled(Not showing mobile & Laptop).

External Crystal also Not working.

Please advice. is it hardware issue.

RE: External Crystal is not enabled in nRF51822- QFAB

bhaskarch — Fri, 01 Feb 2019 10:11:28 GMT

hello Vidar Berg,

.hex file should require for the Fresh custom nRF51822 board for Enable the Bluetooth ?

RE: External Crystal is not enabled in nRF51822- QFAB

bhaskarch — Fri, 01 Feb 2019 09:18:58 GMT

ok. Thak you.

Send me example programs for nRF51822-QFAB custom board.

I am using external crystal 16 Mhz. crystal is not enable with Beacon code i.e PCA10028(S130)

RE: External Crystal is not enabled in nRF51822- QFAB

Vidar Berg — Fri, 01 Feb 2019 07:09:43 GMT

We don't have official support for the ST-link programmer. I'd recommend you to get a Nordic 51 DK which has a on-board jlink programmer. It support programming of external boards as well.

RE: External Crystal is not enabled in nRF51822- QFAB

bhaskarch — Fri, 01 Feb 2019 05:06:15 GMT

i am using ST-link programmer

I am loading nRF51822.axf file only though Keil Uvision Tool.

How to load nRF51822.hex file using ST-link programmer.

Give some basic example code for loading and testing the board.

RE: External Crystal is not enabled in nRF51822- QFAB

Vidar Berg — Thu, 31 Jan 2019 11:46:03 GMT

Please try with attached .hex file and see if you can discover the beacon in the nRF Connect app.

devzone.nordicsemi.com/.../ble_5F00_app_5F00_beacon_5F00_w_5F00_softdevice.hex

RE: External Crystal is not enabled in nRF51822- QFAB

bhaskarch — Thu, 31 Jan 2019 06:33:32 GMT

thanks for reply

i changed Rom and Ram setting Keil Tool, again it is not showing bluetooth on mobile.

first i need to enable Bluetooth on my nRF51822 AB board.

now i am loading ble_app_beacon code but external crystal is not enabled

which example code can i load into the board

Please suggest me.

RE: External Crystal is not enabled in nRF51822- QFAB

Vidar Berg — Wed, 30 Jan 2019 12:17:07 GMT

The nRF51 will use the internal clock as long as the crystal is not requested by the application or Softdevice. Also, the linker settings you posted will not work for the ble_app_beacon example because it will overlap with the softdevice.

These should work for xxAB:

RE: External Crystal is not enabled in nRF51822- QFAB

Kapil Rawat — Wed, 30 Jan 2019 06:24:54 GMT

Hi please look at below devzone question

Ques