looking for SAML21 TCC's non ASF code

[arul]

Hi,

I want sample code of TCC for SAM L21. Please share if anyone have...



Regards,
Arul

[ataradov]

I only have the code for D21. It is essentially the same code, but APBxMASK is located in MCLK, not in PM. And clock enabling will look something like this:

Code: [Select]

  GCLK->PCHCTRL[TCC0_GCLK_ID].reg = GCLK_PCHCTRL_GEN(0) | GCLK_PCHCTRL_CHEN;
  while (0 == (GCLK->PCHCTRL[TCC0_GCLK_ID].reg & GCLK_PCHCTRL_CHEN));

Also, TCC has many modes. The code below is for simple PWM.

Code: [Select]

void APP_PwmInit(void)
{
  HAL_GPIO_R_out();
  HAL_GPIO_R_pmuxen(PORT_PMUX_PMUXE_F_Val);

  HAL_GPIO_G_out();
  HAL_GPIO_G_pmuxen(PORT_PMUX_PMUXE_F_Val);

  HAL_GPIO_B_out();
  HAL_GPIO_B_pmuxen(PORT_PMUX_PMUXE_F_Val);

  HAL_GPIO_W_out();
  HAL_GPIO_W_pmuxen(PORT_PMUX_PMUXE_F_Val);

  PM->APBCMASK.reg |= PM_APBCMASK_TCC0;

  GCLK->CLKCTRL.reg = GCLK_CLKCTRL_ID(26/*TCC0_GCLK_ID & TCC1_GCLK_ID*/) |
      GCLK_CLKCTRL_CLKEN | GCLK_CLKCTRL_GEN(0);

  TCC0->CTRLA.reg =
      TCC_CTRLA_PRESCALER(TCC_CTRLA_PRESCALER_DIV1_Val) |
      TCC_CTRLA_PRESCSYNC(TCC_CTRLA_PRESCSYNC_PRESC_Val);

  TCC0->WAVE.reg = TCC_WAVE_WAVEGEN(TCC_WAVE_WAVEGEN_NPWM_Val);

  TCC0->PER.reg = PWM_TOP;

  TCC0->CTRLA.reg |= TCC_CTRLA_ENABLE;
}

static void pwmUpdatePwmChannels(void)
{
  TCC0->CTRLA.reg &= ~TCC_CTRLA_ENABLE;

  TCC0->COUNT.reg = 0;

  TCC0->CC[0].reg = 111;
  TCC0->CC[1].reg = 222;
  TCC0->CC[2].reg = 333;
  TCC0->CC[3].reg = 444;

  TCC0->CTRLA.reg |= TCC_CTRLA_ENABLE;
}