MCU was reset from time to time

[mark.zhang]

HI,

I have a product which scan for RFID card through NFC and Mobile Device through BLE after nRF52840 MCU was wakeup.

If I scan NFC and BLE scanning separately, everything was OK.

But, If I start BLE scanning first, do connect-discovery-exchange data in the event handle, then in a loop, I scan NFC for RFID card and check BLE state, nRF52840 will be reset from time to time.

May I scan NFC and BLE at same time, if yes, how to do it ?

Thanks,

Mark,

[Charlie]

Hi Mark,

Could you provide more informaiton about your program?

Like which SDK are you using, nRF5 SDK or NCS? which specific version?

It would be great if you can share a minimal sample that can reproduce this issue.

Best regards,

Charlie

[mark.zhang]

HI, Charlie:

  I use ncs v2.3.0

 I used below loop to scan MobileID with BLE and RFID card with NFC:

scanStart();
while(1) {
if(gBleState == Ble_Nothing) {
gBleSequence = 1;
bMobileIDReady = false;
scanStart();
}

if((scanCard() > 0) || (bMobileIDReady == true)) {
if(gBleState == Ble_Scanning) {
scanStop();
} else if((gBleState == Ble_Connected) || (gBleState == Ble_Discoveried)) {
disconnect_from_mobile();
}

Delay_ms(100);
ConfirmationBeep();

if(gBleState == Ble_Completed) gBleState = Ble_Nothing;
}

During scan MobileID with BLE, I used as Central from the sample central_uart.

Mark,