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Merge pull request #11896 from fjmolinas/pr_stm32l4_stmclk_hsemsi

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cpu/stm32l4/stmclk: fix HSE overwrite when MSI is enabled
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MichelRottleuthner 2019-07-30 18:46:17 +02:00 committed by GitHub
commit bd576e7839
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1 changed files with 1 additions and 1 deletions
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cpu/stm32l4/stmclk.c
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@ -133,7 +133,7 @@ void stmclk_init_sysclk(void)
#if ((CLOCK_HSE == 0) || CLOCK_MSI_ENABLE)
/* reset clock to MSI with 48MHz, disables all other clocks */
RCC->CR = (RCC_CR_MSIRANGE_11 | RCC_CR_MSION | RCC_CR_MSIRGSEL);
RCC->CR |= (RCC_CR_MSIRANGE_11 | RCC_CR_MSION | RCC_CR_MSIRGSEL);
while (!(RCC->CR & RCC_CR_MSIRDY)) {}
/* select the MSI clock for the 48MHz clock tree (USB, RNG) */
RCC->CCIPR = (RCC_CCIPR_CLK48SEL_0 | RCC_CCIPR_CLK48SEL_1);