CYBLE-202007-EVAL disconnect frequently

[Anonymous]

Hello,

I'm trying to get CYBLE-202007-EVAL to run Find Me Profile.

I plug the board into the CY8CKIT-042-BLE-A baseboard and communicate with CySmart.

But after connect for an hour, it just disconnect and the reason is CONNECT_TIMEOUT.

To extend range of BLE, I write the below code into file which I get from datasheet.

/* define the test register to switch the PA/LNA hardware control pins */ 
#define CYREG_SRSS_TST_DDFT_CTRL 0x40030008
/* Mandatory events to be handled by BLE application code */ 
case CYBLE_EVT_STACK_ON: 
/* Configure the Link Layer to automatically switch PA control pin P3[2] and LNA control pin P3[3] */ 
CY_SET_XTND_REG32((void CYFAR *)(CYREG_BLE_BLESS_RF_CONFIG), 0x0331); 
CY_SET_XTND_REG32((void CYFAR *)(CYREG_SRSS_TST_DDFT_CTRL), 0x80000302);

Does anyone have any ideas on this issue?

Thanks

[GyanC_36]

Hello,

   ->  Have you connected an external antenna to this module?

   -> Please note that if you are using on board PCB antenna ,you have to populate  cap (C14) and Inductor (L1)  an mentioned in the datasheet ( http://www.cypress.com/file/318881/download  page#13).

Regards,

Gyan

[Anonymous]

Hello,

I'm using on board PCB antenna, I don't know what you said " populate  cap (C14) and Inductor (L1)  an mentioned ".

Would you explain what that mean?

Thanks

[GyanC_36 · Accepted solution]

Hello,

       You have to connect capacitor and Inductor which are named as C14 and L1 in the Module schematic to use the on board PCB antenna. Please refer the Module datasheet http://www.cypress.com/file/318881/download   page #13 for schematic. Please go through the table placed near the UFL Connector at page#13 of above mentioned datasheet.

-Gyan

[Anonymous]

Hello,

So I have to soldering C14 and L1 on the board which location just like CYBLE-212006?

If that correct, I should desoldering R3 which already on the board?

If I understand wrong, please correct me.

Thanks

[GyanC_36]

Yes, you are right. You can refer the  below layout screenshot as well.

   

-Gyan

[Anonymous]

Hello,

I have another question.

L1 didn't soldering on the board, which means on board PCB antenna didn't connect.

Why the board still can connect to CySmart?

[GyanC_36]

It is because of some energy is radiated due to the  leakage current flowing in antenna pin.

-Gyan