4 LED are blinking continously

[MARTIN FR]

i compiled the ble_uart_exmaple program and it get downloaded to the kit then the four LED on the nrf51DK started blinking continously i dont know what happen to board and i erase the whole kit and it works fine for only blinky example and for other examples it get downloaded but no response from the kit , any suggestions are welcome

thank you

[Stefan Birnir Sverrisson]

Make sure you have these settings for the flashing algorithm in Keil

[MARTIN FR]

i downloaded the .zip then i opend the example it is showing me this error how can i solve this issue?

Rebuild target 'nrf51422_xxac_s110' Error instantiating RTE components Error #544: Required Software Pack 'NordicSemiconductor.nRF_DeviceFamilyPack' is not installed Error #543: Device nRF51422_xxAC(Nordic Semiconductor) not found, pack '' is not installed Error #541: 'NordicSemiconductor::Device:Startup:7.2.1' component is missing, pack 'NordicSemiconductor.nRF_DeviceFamilyPack' is not installed Target not created. Build Time Elapsed: 00:00:01