Part Number:CC2640
** I need someone with BLE Link-Layer Stack knowledge for this **
I have a 2640F128 OEM board that advertises but fails to connect during the simple_peripheral project.
I use the CC2650DK_4XS predefine as the board has the RSM package.
I am using ble_sdk_2_02_01_18.
Trying to connect with BLE Scanner (or any Android app) is unsuccessful and I get the following sequence:
GAP Message History :
0 - GAP_DEVICE_INIT_DONE_EVENT
2 - GAP_ADV_DATA_UPDATE_DONE_EVENT
2 - GAP_ADV_DATA_UPDATE_DONE_EVENT
3 - GAP_MAKE_DISCOVERABLE_DONE_EVENT
--------------------------------------(Advertising)
--------------------------------------(Try to connect from BLE Scanner App)
5 - GAP_LINK_ESTABLISHED_EVENT
6 - GAP_LINK_TERMINATED_EVENT* pPkt->reason = 0x3E = LL_STATUS_ERROR_CONN_FAILED_TO_BE_ESTABLISHED
3 - GAP_MAKE_DISCOVERABLE_DONE_EVENT
* Sometimes the GAP_LINK_TERMINATED_EVENT does not happen and the attempt times out with LL_SUPERVISION_TIMEOUT_TERM.
Schematic is attached.
I NEED TO FIND OUT:
1) What are the causes of LL_STATUS_ERROR_CONN_FAILED_TO_BE_ESTABLISHED. CRC issues possibly?
2) Could there be HW setup causing this, such as incorrect Clock setup?
3) Can you tell from the schematic which antenna configuration I should be using?
Currently I am using (RF_FE_DIFFERENTIAL | RF_FE_INT_BIAS).
The antenna itself is single ended but since it goes through a Balun and enters the CPU at both antenna points I selected differential.
I tries other antenna selections with no results.
Thanks,
Mark
(Please visit the site to view this file)
