/**************************************************************************//**
* @brief Configure trace output for energyAware Profiler
* @note Enabling trace will add 80uA current for the EFM32_Gxxx_STK.
* DK's needs to be initialized with SPI-mode:
* @verbatim BSP_Init(BSP_INIT_DK_SPI); @endverbatim
*****************************************************************************/
void BSP_TraceSwoSetup(void)
{
/* Enable GPIO clock */
CMU->HFPERCLKEN0 |= CMU_HFPERCLKEN0_GPIO;
/* Enable Serial wire output pin */
GPIO->ROUTE |= GPIO_ROUTE_SWOPEN;
/* Set correct location */
GPIO->ROUTE = (GPIO->ROUTE & ~(_GPIO_ROUTE_SWLOCATION_MASK)) | BSP_TRACE_SWO_LOCATION;
/* Enable output on correct pin. */
TRACE_ENABLE_PINS();
/* Enable debug clock AUXHFRCO */
CMU->OSCENCMD = CMU_OSCENCMD_AUXHFRCOEN;
/* Wait until clock is ready */
while (!(CMU->STATUS & CMU_STATUS_AUXHFRCORDY)) ;
// Check if trace already enabled, if so assume that an external debugger
// is in control and skip further setup.
if ( !( CoreDebug->DEMCR & CoreDebug_DEMCR_TRCENA_Msk ) ) {
/* Enable trace in core debug */
CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk;
/* Enable PC and IRQ sampling output */
DWT->CTRL = 0x400113FF;
/* Set TPIU prescaler to 16. */
TPI->ACPR = 0xf;
/* Set protocol to NRZ */
TPI->SPPR = 2;
/* Disable continuous formatting */
TPI->FFCR = 0x100;
/* Unlock ITM and output data */
ITM->LAR = 0xC5ACCE55;
ITM->TCR = 0x10009;
}
}
/**************************************************************************//**
* @brief Configure trace output for energyAware Profiler
* @note Enabling trace will add a 80uA current for the EFM32_Gxxx_STK.
* DK's needs to be initialized with SPI-mode:
* @verbatim BSP_Init(BSP_Init_SPI); @endverbatim
*****************************************************************************/
void BSP_TraceSwoSetup(void)
{
/* Debug logic registers */
volatile uint32_t *dwt_ctrl = (uint32_t *) 0xE0001000;
volatile uint32_t *tpiu_prescaler = (uint32_t *) 0xE0040010;
volatile uint32_t *tpiu_protocol = (uint32_t *) 0xE00400F0;
/* Enable GPIO clock */
CMU->HFPERCLKEN0 |= CMU_HFPERCLKEN0_GPIO;
/* Enable Serial wire output pin */
GPIO->ROUTE |= GPIO_ROUTE_SWOPEN;
/* Set correct location */
GPIO->ROUTE = (GPIO->ROUTE & ~(_GPIO_ROUTE_SWLOCATION_MASK)) | BSP_TRACE_SWO_LOCATION;
/* Enable output on correct pin. */
TRACE_ENABLE_PINS();
/* Enable debug clock AUXHFRCO */
CMU->OSCENCMD = CMU_OSCENCMD_AUXHFRCOEN;
/* Wait until clock is ready */
while (!(CMU->STATUS & CMU_STATUS_AUXHFRCORDY)) ;
/* Enable trace in core debug */
CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk;
/* Enable PC and IRQ sampling output */
*dwt_ctrl = 0x400113FF;
/* Set TPIU prescaler to 16. */
*tpiu_prescaler = 0xf;
/* Set protocol to NRZ */
*tpiu_protocol = 2;
/* Unlock ITM and output data */
ITM->LAR = 0xC5ACCE55;
ITM->TCR = 0x10009;
}
