Sample Beacon example from the SDK 12

[Ravin]

The example code of beacon was used from the SDK -nRF5_SDK_12.1.0_0d23e2a\examples\ble_peripheral\ble_app_beacon\pca10028\s130\arm5_no_packs\ble_app_beacon_pca10028_s130

We have been working on the nRF51822 IC on a custom board. 

We have flashed the softdevice given by nRF - s130_nrf51_2.0.1_softdevice

Unfortunately, we don't have a crystal oscillators, therefore the firmware is not running on the board. 

Is there any changes that we can do to the firmware so that it doesn't need the crystal oscillator?

[Øyvind]

Hello,

Is there any changes that we can do to the firmware so that it doesn't need the crystal oscillator?

 In sdk_config.h you can change clock source, by default it is set to 1 = XTAL: 

// <o> CLOCK_CONFIG_LF_SRC - LF Clock Source

// <0=> RC
// <1=> XTAL
// <2=> Synth

#ifndef CLOCK_CONFIG_LF_SRC
#define CLOCK_CONFIG_LF_SRC 1
#endif

Best regards,
Oeyvind

[Ravin]

How to set the frequency of RC or Synth clock?

How to know what clock is available on the custom board, this is not a custom board made by us.

[Øyvind]

How to set the frequency of RC or Synth clock?

Have a look at the Clock Management chapter in the product specification for the nRF51822. The settings I referred to are for the Low-Frequency Clock (LFCLK), meaning you will only get 32kHz.

Another detail, please see this relevant case to configure the internal RC osc for SDK 12.

How to know what clock is available on the custom board, this is not a custom board made by us.

To know what clock sources are available on the custom board, you will need the documentation/user guide for this board. Do you have a link or name?

Also when used the SDK 11 to run the sample beacon example, it worked perfectly.

 By default, the clock source should be set to external LFCLK. Is the SDK 11 project already configured with the internal LFCLK?

Kind regards,
Oeyvind

[Ravin]

Thank you.

The board we are using is that of minew F3 device, to configure this.

[Øyvind]

Did you solve the issue? 

Unfortunately, we don't have a crystal oscillators, therefore the firmware is not running on the board. 

I'm a little confused. The schematic you sent clearly states that there are two crystal oscillators, one LF and one HF.   

Kind regards,
Oeyvind

[Ravin]

Øyvind said:

Unfortunately, we don't have a crystal oscillators, therefore the firmware is not running on the board. 

This is what the manufacturers told and I didn't know how to figure out whether crystal oscillators are available or not.

Øyvind said:

Is the SDK 11 project already configured with the internal LFCLK?

How do i check this? 

I am new the nrf. Sorry.

[Øyvind]

Ravin said:

This is what the manufacturers told and I didn't know how to figure out whether crystal oscillators are available or not.

Then you will have to contact the manufacturer to ensure you have both crystal oscillators available on the board according to schematics.

Ravin said:

How do i check this? 

 Please see previous posts, here and here. Also, see this relevant case