Is there any UART sample code or developing guideline ?

Enid Juan

Intellectual 330 points

Other Parts Discussed in Thread: CC2540, SIMPLICITI

HELP !!!!

While developing the uart to bluetooth communication, like below

UART <---> CC2540 Keyfob <--- Bluetooth RF --> CC2540 USB dongle

We met some problems

1. The default "hal_board_cfg.h" implied to use "UART DMA" mode, and will conflict if we add other modes in IAR system preprocessor define

2. The default "UART0 with alt1" uses the same PINs as CC debugger on CC2540 keyfob, so we can't uses CC debugger to trace default uart settings

3. The examples : "simpleBLEperipheral", "HostTest" and newest "keyfobdemo" don't have uart serial communication.

Can you offer us a working sample code or some developing guideline for uart so that we can handle it much clearer ?

We got lost in the maze, please help us to get out !

over 14 years ago

0 Jim Noxon over 14 years ago

TI__Genius 14940 points

Take a look at DN117 and the associated code. http://focus.ti.com/analog/docs/litabsmultiplefilelist.tsp?docCategoryId=1&familyId=936&literatureNumber=swra306

Although this is focused on SimpliciTI compatibility, you should be able to use the uart code for the 2540. The code implements a UART with only ISR operation (no DMA required). The files you will want to look at are the uart_intfc.c/.h and uart.c/h.

Note that the polarity bit in the uart.h file is inverted from that of the 2540 (the referenced code is a little old) so you will want to modify the defines that go along with it.

Jim Noxon

Bluetooth®︎

Bluetooth forum

Is there any UART sample code or developing guideline ?