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tracking output PC10 on my board

yefj

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Hello, i have an EFR32FG14 board which physicly looks like in the photo bellow.
I ran The following Code where they say that PC10 is my output
In the following manual shown in the link bellow there are two places on the board where PC10 could be found as shown in the photos bollow.
Which one of them has my output signal?
Thanks.
https://www.silabs.com/documents/public/user-guides/ug318-brd4257b-user-guide.pdf
1.JPG
2.JPG
3.JPG

Code:
#include "em_device.h"
#include "em_cmu.h"
#include "em_emu.h"
#include "em_chip.h"
#include "em_gpio.h"
#include "em_timer.h"

// Desired frequency in Hz
// Min: 145 Hz, Max: 9.5 MHz with default settings
#define OUT_FREQ 1000

// Default prescale value
#define TIMER0_PRESCALE timerPrescale1

/**************************************************************************//**
 * @brief
 *    GPIO initialization
 *****************************************************************************/
void initGpio(void)
{
  // Enable GPIO clock
  CMU_ClockEnable(cmuClock_GPIO, true);

  // Configure PC10 as output
  GPIO_PinModeSet(gpioPortC, 10, gpioModePushPull, 0);
}

/**************************************************************************//**
 * @brief
 *    TIMER initialization
 *****************************************************************************/
void initTimer(void)
{
  // Enable clock for TIMER0 module
  CMU_ClockEnable(cmuClock_TIMER0, true);

  // Configure TIMER0 Compare/Capture for output compare
  TIMER_InitCC_TypeDef timerCCInit = TIMER_INITCC_DEFAULT;
  timerCCInit.mode = timerCCModeCompare;
  timerCCInit.cmoa = timerOutputActionToggle;
  TIMER_InitCC(TIMER0, 0, &timerCCInit);

  // Set route to Location 15 and enable
  // TIM0_CC0 #15 is PC10
  TIMER0->ROUTELOC0 |=  TIMER_ROUTELOC0_CC0LOC_LOC15;
  TIMER0->ROUTEPEN |= TIMER_ROUTEPEN_CC0PEN;

  // Set Top value
  // Note each overflow event constitutes 1/2 the signal period
  uint32_t topValue = CMU_ClockFreqGet(cmuClock_HFPER) / (2*OUT_FREQ * (1 << TIMER0_PRESCALE))-1;
  TIMER_TopSet(TIMER0, topValue);

  // Initialize and start timer with defined prescale
  TIMER_Init_TypeDef timerInit = TIMER_INIT_DEFAULT;
  timerInit.prescale = TIMER0_PRESCALE;
  TIMER_Init(TIMER0, &timerInit);
}

/**************************************************************************//**
 * @brief
 *    Main function
 *****************************************************************************/
int main(void)
{
  // Chip errata
  CHIP_Init();

  // Init DCDC regulator with kit specific parameters
  EMU_DCDCInit_TypeDef dcdcInit = EMU_DCDCINIT_DEFAULT;
  EMU_DCDCInit(&dcdcInit);

  // Initialization
  initGpio();
  initTimer();

  while (1) {
    EMU_EnterEM1(); // Enter EM1 (won't exit)
  }
}
 

stenzer

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Hi,

I could not find a schematic of the board to check it, but I assume PC10 is physically connected to both pins. You may test with a multimeter.

greets
 
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    yefj

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