nrf51822 rev 3 chip only scanable in usb dongle(pca10000)

[wooseok]

Hi.

I use nrf51822 rev.3 build number CEAAE00(0x0079) package is WLCSP. Before I got a experience already develop wearable device using rev.1 chip. And that board work perfect with dongle and smartphone.

Recently I changed my ic rev.1(QFN) to rev.3(WLCSP) and Softdevice 8 and SDK is v8.1.0. and then this chip is work properly with USB Dongle(PCA10000). but not work(not scanable) with smartphone(Android and also iphone).

how can i scan my device in smartphone?

Summarize..

• recently changed SD 5.2.1 to SD 8
• also change sdk 5 to 8.1.0
• chip revision change 1 to 3
• scan and connect working with dongle
• but not scan in smartphone(iphone, android) also not connectable
• also example(sdk\examples\ble_peripheral\ble_app_uart) that include in sdk is not work too.

schematics(only antenna part)

I attachment packet sniffer data.

sniffer data

sniffer data is contains adv packet with channel 37, 38, 39. but not scan_req by smartphone.

#Add1 project option change for ram size(16kB ram)

nrf sniffer and wireshark

#add2 packet save as pcapng

wire_newboard.pcapng

part of bom

CRYSTAL FC-12M_32.768KHz EPSON

CRYSTAL FA-128_16MHz EPSON

BALUN BAL-NRF02D3 ST

source Part of ble init

partofble.c

if you send email to "[email protected]" i will send a project by email.

[wooseok]

it's just wrong connection xtal(16MHz) with MCU. xtal schematics have to changed for work.

load cap wrong connection!!! thanks to @Hung bui.