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stm32cube: recalibrate hsi clock after reset for H7/H7RS serie #231

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stm32cube: recalibrate hsi clock after reset for H7/H7RS serie #231

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5 changes: 5 additions & 0 deletions stm32cube/stm32h7rsxx/drivers/src/stm32h7rsxx_ll_rcc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -168,7 +168,12 @@ void LL_RCC_DeInit(void)
/* Wait for HSI READY bit */
while (LL_RCC_HSI_IsReady() == 0U)
{}
/* Set HSIDIV Default value */
CLEAR_BIT(RCC->CR, RCC_CR_HSIDIV);

/* Set HSITRIM bits to the reset value */
LL_RCC_HSI_SetCalibTrimming(0x40U);

/* Reset CFGR register to select HSI as system clock */
CLEAR_REG(RCC->CFGR);

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6 changes: 6 additions & 0 deletions stm32cube/stm32h7xx/drivers/src/stm32h7xx_ll_rcc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -138,6 +138,12 @@ void LL_RCC_DeInit(void)
while (LL_RCC_HSI_IsReady() == 0U)
{}

/* Set HSIDIV Default value */
CLEAR_BIT(RCC->CR, RCC_CR_HSIDIV);

/* Set HSITRIM bits to the reset value */
LL_RCC_HSI_SetCalibTrimming(0x40U);

/* Reset CFGR register */
CLEAR_REG(RCC->CFGR);

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