The KEY POINT of example "ble_app_uart"

This article baed on "pca10040", nRF52832

example code path "examples/ble_peripheral/ble_app_uart"

IMPORTANT!!!! board config file of this example located in "components/boards/pca10040.h" and uart pin defined in this file, like this: #define RX_PIN_NUMBER 8 #define TX_PIN_NUMBER 6 So, the KEY point of this example is uart character goes through PIN#8 an PIN#6 if you don't know where are they, see schematic of you board

I spend whole night to figure out why I can't see anything through my JLink uart thats because my JLink uart using PIN#15 and PIN#16 as UART after I changed my code to : #define RX_PIN_NUMBER 16 #define TX_PIN_NUMBER 15 problem resolved(if nothing happened , try swap RX TX pin)

my JLink Jack Schematic image description

Windows Step Flow image description

Connection FLow image description

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