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CC2640R2F: UART driver implementation for a CC26XX UART controller using the UDMA controller

Dafna M
Prodigy 60 points
Part Number: CC2640R2F


Hi,

I've read the CC2640R2F docs, and from its register map info the uDMA supports UART, among other peripherals. (12.3.1 Channel Assignments, Table 12-1)

SDK version that I use: Simplelink_cc2640r2_sdk_1_35_00_33.

I tried to find drivers/HAL code for accessing UART through the uDMA, but the only driver I found regarding the uDMA is the SPI-uDMA driver (SPICC26XXDMA.h).
This driver makes use of UDMACC26XX.h driver, that according to the documentations shall not be used directly form the application.  
How should I activate the UART-uDMA setup? directly by accessing the uDMA registers? 
Can you please refer me to an example code / an existing driver for that?
Thanks,
Dafna.