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Check if power source is already configured on STM32H7 #428

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Check if power source is already configured on STM32H7 #428

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6 changes: 4 additions & 2 deletions hal/stm32h7.c
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Original file line number Diff line number Diff line change
Expand Up @@ -627,8 +627,10 @@ static void clock_pll_on(int powersave)
uint32_t cpu_freq, plln, pllm, pllq, pllp, pllr, hpre, d1cpre, d1ppre;
uint32_t d2ppre1, d2ppre2, d3ppre, flash_waitstates;

PWR_CR3 |= PWR_CR3_LDOEN;
while ((PWR_CSR1 & PWR_CSR1_ACTVOSRDY) == 0) {};
if((PWR_CR3 & (PWR_CR3_LDOEN | PWR_CR3_SCUEN)) == (PWR_CR3_LDOEN | PWR_CR3_SCUEN)) {
PWR_CR3 |= PWR_CR3_LDOEN;
while ((PWR_CSR1 & PWR_CSR1_ACTVOSRDY) == 0) {};
}

PWR_D3CR |= (PWR_D3CR_VOS_SCALE_1 << PWR_D3CR_VOS_SHIFT);
/* Delay after setting the voltage scaling */
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