CC2530: SFD

Hi,

This code can be used to configure the CC2530 to output the SFD_SYNC, CLK, and DATA signals.

// in ZMain.c

/* RF observable control register value to output Sniffer CLK signal */
#define RFC_OBS_CTRL_SNIF_CLK     0x09
                
/* RF observable control register value to output Sniffer DATA signal */
#define RFC_OBS_CTRL_SNIF_DATA    0x08

/* RF observable control register value to output SFD_SYNC signal */
#define RFC_OBS_CTRL_SFD_SYNC     0x0F

/* OBSSELn register value to select RF observable 0 */
#define OBSSEL_OBS_CTRL0             0xFB

/* OBSSELn register value to select RF observable 1 */
#define OBSSEL_OBS_CTRL1             0xFC

/* OBSSELn register value to select RF observable 2 */
#define OBSSEL_OBS_CTRL2             0xFD

...

int main( void )
{
...
  // Output control signals to OBSSEL0, OBSSEL1, and OBSSEL4 pins
  // You may use any of the OBSSEL0-5 pins here instead
  RFC_OBS_CTRL0 = RFC_OBS_CTRL_SNIF_CLK;
  OBSSEL0              = OBSSEL_OBS_CTRL0;

  RFC_OBS_CTRL1 = RFC_OBS_CTRL_SNIF_DATA;
  OBSSEL1              = OBSSEL_OBS_CTRL1;

  RFC_OBS_CTRL2 = RFC_OBS_CTRL_SFD_SYNC;
  OBSSEL4              = OBSSEL_OBS_CTRL2;

  MDMTEST1 |= 0x04;  
...
}

Note: if you are using an end device that goes to sleep, you need call this code again after it comes out of sleep, i.e. in halSleep().