Hi,
I'm trying to run the uart loopback example in the nrf52 0.9.1 SDK with DMA enabled but it is being caught in an error catch. It runs fine without DMA enabled though. I'm enabling DMA with the following change to the project:
nRF52_SDK_0.9.1_3639cc9\examples\peripheral\uart\config\uart_pca10036/nrf_drv_config.h
Replace line 179 with: #define UART0_CONFIG_USE_EASY_DMA true
And I'm enabling loopback in main by uncommenting #define ENABLE_LOOPBACK_TEST on line 32
This is our error:
error code: 0x11 NRF_ERROR_BUSY
line num: 123
file name: main.c
And it is being thrown at:
line 357 of nrf_drv_uart.c
What is going on here? Am I enabling DMA for the project correctly and is this expected to work?