RTOS: UART Communication

Mark Felberg

Guru 19990 points

Tool/software: TI-RTOS

Hi everyone, I am a new for this work of UART. I working with cc13xx and a device of my company. This is a switchboard with which I have to turn on / off led through the serial. Can anybody give me some clue? Thanks so much!

over 6 years ago

0 ToddMullanix over 6 years ago

TI__Guru* 96960 points

Mario,

Have you tried building and running the UART Echo example?

Todd

0 Mark Felberg over 6 years ago in reply to ToddMullanix

Guru 19990 points

Yes, Can you help me?

0 ToddMullanix over 6 years ago in reply to Mark Felberg

TI__Guru* 96960 points

I'm not really sure what you are asking for.

0 Mark Felberg over 6 years ago in reply to ToddMullanix

Guru 19990 points

A little example, can you do it?

0 ToddMullanix over 6 years ago in reply to Mark Felberg

TI__Guru* 96960 points

I changed the UART Echo by adding the following between the UART_read and UART_write.

while (1) {
UART_read(uart, &input, 1);
switch (input) {
case 't':
GPIO_toggle(Board_GPIO_LED0);
break;
case 'e':
GPIO_write(Board_GPIO_LED0, Board_GPIO_LED_ON);
break;
case 'd':
GPIO_write(Board_GPIO_LED0, Board_GPIO_LED_OFF);
break;
default:
break;
}
UART_write(uart, &input, 1);

When you type in 't' the LED is toggled. 'e' enables it (turns it on). 'd' disables it (turns if off).

0 Mark Felberg over 6 years ago in reply to ToddMullanix

Guru 19990 points

hello-world1.c

#include "contiki.h"
#include "dev/serial-line.h"
#include "dev/leds.h"
#include "dev/cc26xx-uart.h"
#include <stdio.h>
#include <stdint.h>

PROCESS(test_serial, "Serial line test process");
AUTOSTART_PROCESSES(&test_serial);
/*-------------------------------------------------------*/
PROCESS_THREAD(test_serial, ev, data){ 
PROCESS_BEGIN();
 
 printf("Wait\n");
 leds_on(LEDS_YELLOW);
 
 while(1){
	 PROCESS_WAIT_EVENT_UNTIL((ev==serial_line_input_byte));
     printf("Insert the character! \n");
 if(ev == 0) {
   printf("Led off!\n");
   leds_off(LEDS_YELLOW);
   ev=1;
   } else if(ev == 1) {
	   printf("Led on!\n");
	   leds_toggle(LEDS_YELLOW);
	   ev=0;
 }}
   PROCESS_END();
   }
 /*--------------------------------------------------------------------------*/

Hi man,

If I use Contiki OS, I create this code but on Uart if write 1 don't success nothing. Can yuo help me?

0 ToddMullanix over 6 years ago in reply to Mark Felberg

TI__Guru* 96960 points

Can you start a new thread since this is a different question.

Thanks,
Todd

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RTOS: UART Communication