How to program the NRF51422 without using USB cable

[sharmelaraju]

Hi,

We are using nrf51422 in our project.So right now i am loading the program using the Usb cable .Here my doubt is can we able to flash the program by using usb to uart (connecting RX,Tx,Gnd,VCC) .If it is possible can you plz tell me how to load the program or is there any other method. Plz help me in this.

[sharmelaraju]

Thanks for the reply.

can you tell me how to connect from pc to NRF52 controller.Is the Rx ,Tx ,Gnd,Vcc pins(USB to UART cable) are enough to connect to NRF52  controller .I will try it.

Thanks

[Einar Thorsrud]

Hi,

The nRF52 devices have generic GPIO pins that can be connected to any digital peripheral, so which pins you need to use depends on the pin configuration in your UART bootloader. If you use a modified bootloader for the nRF52 DK, you can refer to the pin configuration in <SDK15.3>\components\boards\pca10040.h:

#define RX_PIN_NUMBER  8
#define TX_PIN_NUMBER  6
#define CTS_PIN_NUMBER 7
#define RTS_PIN_NUMBER 5

Regarding GND and VCC, please refer to the Pin assignments.

[sharmelaraju]

Thanks for the reply.

I will try it out and let you know.