Manual

NRF51822 Eval Kit User Manual Waveshare
9
3. FAQ
 Q: What should I do if KEIL cannot download programs?
A: First of all, check whether the power supply to the system is properly working. If yes, try to
use nRF51 Programming in the nRFgo Studio to find out whether the setting of KEIL project is
fine.
 Q: How to do when nRFgo Studio can perform downloading, but KEIL gives a warning of
download error?
Figure 5: KEIL download error
 A: Please make sure SDK is installed properly. The setting of Flash Download is as the figure
shown below.
Figure 6: Flash Download settings