use "simple_uart.c" for ble debug couse ble device can not be found

[gootoomoon]

I want use uart to debug my ble program ,

In the devzone I found this and this to meet my need , but when I conditional compilation UART code into hex, I can not find my ble device on my PC or Nexus7 II , without uart part, ble device can be found and connect normally.

I am so confused about this . Did you meet this befor?

How can I use UART output to debug my ble app in nrf51822?

[Balaji Srinivasan]

Hi there,

Most probably you have not included the retarget.c (included in ble_app_hrs_printf.zip available at the link you have mentioned) in your compilation. You could either do that or you microlib. One of this is needed, if you have used 'printf's in your code.

More on retargeting -> www.keil.com/.../gsac_retargetcortex.htm

Cheers, Balaji

[gootoomoon]

Thank you very much ， it OK now .