em_dbg.c

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/***************************************************************************/
#include "em_dbg.h"

#if defined( CoreDebug_DHCSR_C_DEBUGEN_Msk )

#include "em_assert.h"
#include "em_cmu.h"
#include "em_gpio.h"

/***************************************************************************/
/***************************************************************************/
/*******************************************************************************
 **************************   GLOBAL FUNCTIONS   *******************************
 ******************************************************************************/

#if defined( GPIO_ROUTE_SWOPEN ) || defined( GPIO_ROUTEPEN_SWVPEN )
/***************************************************************************/
void DBG_SWOEnable(unsigned int location)
{
  int port;
  int pin;

  EFM_ASSERT(location < AFCHANLOC_MAX);

#if defined ( AF_DBG_SWO_PORT )
  port = AF_DBG_SWO_PORT(location);
  pin  = AF_DBG_SWO_PIN(location);
#elif defined (AF_DBG_SWV_PORT )
  port = AF_DBG_SWV_PORT(location);
  pin  = AF_DBG_SWV_PIN(location);
#else
#warning "AF debug port is not defined."
#endif

  /* Port/pin location not defined for device? */
  if ((pin < 0) || (port < 0))
  {
    EFM_ASSERT(0);
    return;
  }

  /* Ensure auxiliary clock going to the Cortex debug trace module is enabled */
  CMU_OscillatorEnable(cmuOsc_AUXHFRCO, true, false);

  /* Set selected pin location for SWO pin and enable it */
  GPIO_DbgLocationSet(location);
  GPIO_DbgSWOEnable(true);

  /* Configure SWO pin for output */
  GPIO_PinModeSet((GPIO_Port_TypeDef)port, pin, gpioModePushPull, 0);
}
#endif

#endif /* defined( CoreDebug_DHCSR_C_DEBUGEN_Msk ) */