nrf51822 minimal system

nrf51822 minimum system test solution as a design reference solution

https://item.szlcsc.com/257130.html

Project test passed

If the download does not work, repair the QFN NRF51822 and it still does not work. Use pull-up resistors (1K~10K) for both SWDAT and SWCLK to 3.3V. There is no need to solder the 1K pull-down resistor for SWCLK.

Added IO test and serial port test programs

The IO test program is: LED flashes, all IO ports are LED lights, conversion occurs once every 1S, and the cycle is 2S.

The baud rate of 29RXD 28TXD in the serial port test is 115200. The transmission is closed loop. After receiving something, send something and press Q to exit.

You can go to the NRF official website and download the S110 package of nrf51822 and then unzip the two files I attached to the folder below. Note that you are using keil5.

Updated on 2021-5-1

The 2.4G radio frequency is operating normally, and both reception and transmission can work. However, the signal quality is not guaranteed. We can only guarantee that communication is possible.