uart communication

[paul0208]

Hi, all.

I tested ble_app_uart in example directory by PCA10040 board. The ble_app_uart includes "printf("\r\nUART Start!\r\n");" and "UART Start!" cames out on the putty connected with PCA10040 USB UART port. Good~

Then I ported the ble_app_uart to my custom board. Changing pca10040.h like below.

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

I connected tx(p0.6) and rx(p0.7) to putty thru USB-UART convertor. But, there is no data on putty screen.

What do I have to do? Thanks you in advanced.

BR Paul

[Stian Røed Hafskjold]

It's not easy to say what can be wrong here. I guess you have to narrow the problem down somehow, using a logic analyzer or a oscilloscope and see if you get the expected data on the lines. If the data out from the nRF5 chip is correct, as it probably is since it is working with the DK, I guess you have to go through the USB-UART converter datasheet to see if there's anything you have missed.