nrf51822 uart example doesn´t work

[tobias.poppe]

Hey pro´s, first thanks for this great community! I´ve read a lot of conntents here, and there is a huge amount of knowledge in this forum! But since 2 weeks i´ve got a problem i can´t solve...

I use a small board with a 51822 on it, programmed by a st-link via open-ocd. I work on a mac, so i use gcc. Since here no problem... First i tried a blinking-led-program, without softdevice, everythings fine. Second i tried the HRS-Example from SDK10 with the S110. I changed the makefile so the ram is allocated right, used mergehex to merge the compiled hex with the s110, burned it via open-ocd, everythings fine. The app on my iphone recognizes the board in 2 seconds, everythings ok.

As i need a ble-uart connection for my project, i tried the ble-uart-example next. compiled fine, but the app doesn´t find the nrf?!?!?? After some minutes for a few second "nodric hrs" popped on, but i couldn´t connect.

Any ideas what i´ve done wrong? Thanks a lot

Grettings from germany Tobias

[tobias.poppe]

Hi metch, thanks for your response! I didn´t set up eclipse and gdb yet, will try this today. In the meantime i tried the HTS-Example, works fine...

Here is what i do: -Edit the linker script to ram-length 2000 in the armgcc folder (of the example) -Terminal to the armgcc-folder (of the example) -make -copy the s110.hex from the components folder into the build folder -"mergehex -m s110.hex build.hex -o merged-hex" (where build.hex is the freshly made) -"openocd -s /usr/local/Cellar/open-ocd/0.8.0/share/openocd/scripts/ -f interface/stlink-v2.cfg -f target/nrf51.cfg" -second terminal "telnet 127.0.0.1 4444" -"halt", "nrf51 mass_erase", "flash write_image erase mergerd.hex 0", "reset" -connect the iphone app

Surely this takes longer upload time due to the softdevice flashed everytime, but for the first examples i can live with that wait-time...

I´ve done this procedure with the : "ble_app_hrs" example, works fine "ble_app_hts" example, works fine "ble_app_uart" example, can´t find the device in the iphone app

While i trying to set up eclipse, can you maybe try out the uart-example in your toolchain? Maybe the problem is in the SDK10...

Thanks, Tobias

UPDATE: tried the same procedure with the ble_app_rsc example, works fine....

Second UPDATE: i´ve tested the procedure now with SDK11 and S130 instead of S110. The RamLength in the makefile should be 1F80. HRM and HTS works fine, UART no device found....

Third UPDATE: i´ve downloaded SDK 8.0.0, and with this SDK the UART example works as it should...