/**
* \brief Enable the internal voltage regulator.
*
* \param p_supc Pointer to a SUPC instance.
*/
void supc_enable_voltage_regulator(Supc *p_supc)
{
#if (SAM3U || SAM3XA)
uint32_t ul_mr = p_supc->SUPC_MR & (~(SUPC_MR_KEY_Msk | SUPC_MR_VDDIORDYONREG));
p_supc->SUPC_MR = SUPC_MR_KEY(SUPC_KEY) | ul_mr | SUPC_MR_VDDIORDYONREG;
#else
uint32_t ul_mr = p_supc->SUPC_MR & (~(SUPC_MR_KEY_Msk | SUPC_MR_ONREG));
p_supc->SUPC_MR = SUPC_MR_KEY(SUPC_KEY) | ul_mr | SUPC_MR_ONREG;
#endif
}
/**
* \brief Switch slow clock source selection to external 32k (Xtal or Bypass) oscillator.
* This function disables the PLLs.
*
* \note Switching sclk back to 32krc is only possible by shutting down the VDDIO power supply.
*
* \param ul_bypass 0 for Xtal, 1 for bypass.
*/
void supc_switch_sclk_to_32kxtal(Supc *p_supc, uint32_t ul_bypass)
{
/* Set Bypass mode if required */
if (ul_bypass == 1) {
p_supc->SUPC_MR |= SUPC_MR_KEY(SUPC_KEY) | SUPC_MR_OSCBYPASS;
}
p_supc->SUPC_CR |= SUPC_CR_KEY(SUPC_KEY) | SUPC_CR_XTALSEL;
}
void brick_enable_brownout_detection(void) {
SUPC->SUPC_MR |= SUPC_MR_KEY(0xA5) | SUPC_MR_BODDIS_ENABLE;
// SUPC->SUPC_SMMR |= SUPC_SMMR_SMSMPL_CSM | SUPC_SMMR_SMTH_3_2V | SUPC_SMMR_SMIEN_ENABLE;
volatile uint32_t tmp = SUPC->SUPC_SR; // clear sms and smos
NVIC_DisableIRQ(SUPC_IRQn);
NVIC_ClearPendingIRQ(SUPC_IRQn);
NVIC_SetPriority(SUPC_IRQn, 0);
NVIC_EnableIRQ(SUPC_IRQn);
}
/**
* \brief Switch slow clock source selection to external 32k (Xtal or Bypass).
*
* \note This function disables the PLLs.
*
* \note Switching SCLK back to 32krc is only possible by shutting down the VDDIO
* power supply.
*
* \param ul_bypass 0 for Xtal, 1 for bypass.
*/
void pmc_switch_sclk_to_32kxtal(uint32_t ul_bypass)
{
/* Set Bypass mode if required */
if (ul_bypass == 1) {
SUPC->SUPC_MR |= SUPC_MR_KEY(SUPC_KEY_VALUE) |
SUPC_MR_OSCBYPASS;
}
SUPC->SUPC_CR |= SUPC_CR_KEY(SUPC_KEY_VALUE) | SUPC_CR_XTALSEL;
}
/**
* \brief Disable the assertion of core reset signal when a brownout detection occurs.
*
* \param p_supc Pointer to a SUPC instance.
*/
void supc_disable_brownout_reset(Supc *p_supc)
{
uint32_t ul_mr = p_supc->SUPC_MR & (~(SUPC_MR_KEY_Msk | SUPC_MR_BODRSTEN));
p_supc->SUPC_MR = SUPC_MR_KEY(SUPC_KEY) | ul_mr;
}
/**
* \brief Disable the core brownout detector.
*
* \param p_supc Pointer to a SUPC instance.
*/
void supc_disable_brownout_detector(Supc *p_supc)
{
uint32_t ul_mr = p_supc->SUPC_MR & (~(SUPC_MR_KEY_Msk | SUPC_MR_BODDIS));
p_supc->SUPC_MR = SUPC_MR_KEY(SUPC_KEY) | ul_mr | SUPC_MR_BODDIS;
}
