zain aftab

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9 years, 1 month ago.

rs232 in k64f

Hi all, I am doing serial communication with mbed, I have interfaced modem with lpc1768 and k64f. I am getting fine result with lpc1768 but k64f is not showing expected results. I am sending "AT" commands from mbed to modem, and then I am receiving the results. Lpc1768 is displaying the fine results on terminal, but k64f is receiving the garbage value.

include the mbed library with this snippet

#include "mbed.h"


int main()
{
 char buf[100];
    char r[25];
    xbee.baud(9600);
    xbee.format(8,Serial::None,1);
xbee.printf("AT$sr\n");

wait(1);
int i=0;
while(1)

{
while(!xbee.readable()){
          
      
        ;}
  if(xbee.readable())
    {
        r[i] = xbee.getc();
       printf("%c ",r[i]);
        i++; 
     }
    i=0;
}
  }

In both devices baud rate is 9600 which is actually the baud rate of the modem. My code for both of the devices is similar as well:

You can see that it is a very simple code, I am sending the at command to receive the wireless signals, and then I am waiting for the results. Lpc1768 is displaying the expected results, but k64f is not receiving the data in proper format.

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