Flashing Multiple programs

[Jovina]

I am using the nRFgo Studio to flash the nRF52 Development Kit. I am using the SDK V14.0 and its libraries to grab RSSI values by writing code to the N52832 BLE MCU IC. I noticed there is an Arduino core on the nRF52 Development Kit. I am controlling the digital pins with the Arduino and passing RSSI values into it. I code the BLE using Keil and for the arduino core using Visual Studio. Whenever I flash the device for the BLE from Keil, it erases the code uploaded from visual studio and vice versa. Both codes are accessing different memory, so how do I set one to not erase the other?

[haakonsh]

First off, there's no arduino on the nRF52DK. The closest to an arduino on the DK is the Atmel/Microchip SAMD MCU running the Segger J-link FW. 

Second, you should use nrfjprog or nRF Connect to flash your devices.