cc2530 hangs after several minutes of tx over the serial port

Hi Nick,

From your explanation it is kind of hard to understand what exactly going on...

Can you be more specific please...

Have you used breakpoints to observe what's going on with the CPU when it "hangs"?

What exactly happens when it "hangs" (is it trying to execute some specific line, some sort of infinite loop, or

it just jumps to unknown address in the code memory and hangs there)?

What happens inside uart0 ISR?

Br,

Igor

As Igor is stating, what happens with the ISR? Can you set a breakpoint the ISR, and see if it gets hit?
Are all the necessary UART interrupts enabled correcty? 
What software are you using, Z-Stack, TIMAC, CC2530 Software Examples?

LPRF Rocks the World

Thanks to Igor and LPRF rocks the World ( it does! )

1. Basic RF, Light Switch, cc2530, IAR 8051  8.10, modules cc2530BB

2 Code is based on "Light switch" example and actually is reduced to a init and sending a small packet ( 10 characters ) in a loop to a serial port

3. Scenario NO  ISR is used for TX

It works sometimes for 5 minutes but hangs. I am toggling the line in the same loop and it stops also ( scope as a monitor). Debugger shows that

I am stuck on line while( !UTX0IF ) :

void send_Char_to_uart(unsigned char i)
{
 
    U0DBUF = i;  
 
    while(!UTX0IF)        //    << here
       ;
     UTX0IF = 0;
 
}

Registers when "stuck" on UTX0IF :

IEN0 = 0x84

IEN1 = 0x00

IEN2 = 0x01

TCON = 0xA5

IRCON = 0x04

U0BAUD = 0xD8

UOUCR = 0x42

UOGCR = 0x0B

U0CSR = 0xC2

If I comment out "offensive" line and restart, then character is being printed on a term for several minutes, then printing stops but toggling in the loop continues and data is loaded to U0DBUF ( I can step code ).So processor stays operational.

I have repeated the same with ISR driven tx ( DL 212 ) with the same result

I think I have to use even more simple example but could not locate any.

Here is the call

void appAgent(void)
{
   
  uint8 txbuff[APP_PAYLOAD_LENGTH];

 
  for(uint8 i = 0;i<10;i++)
    testb[i] = 0x41 + i;
 
  for(;;)
  {
   send_Char_to_uart('y');

 //  charbuff(testb,10);

    halMcuWaitMs(5);

        TOGGLE_07;
  }

Not sure if this helps to get the picture. Thank you in advance

Nick

Hi Nick,

Please refer to DN112.

Meanwhile I'll look into your code to see what's wrong there.

Br,

Igor