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stm32l0: add rcc_set_msi_range.

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This commit is contained in:
Guillaume Revaillot 2019-01-30 14:53:20 +01:00 committed by Karl Palsson
parent 9051480e7f
commit 6953138a28
2 changed files with 13 additions and 0 deletions
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2
include/libopencm3/stm32/l0/rcc.h
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@ -693,6 +693,8 @@ void rcc_set_ppre1(uint32_t ppre1);
void rcc_set_hpre(uint32_t hpre);
void rcc_clock_setup_pll(const struct rcc_clock_scale *clock);
void rcc_set_msi_range(uint32_t msi_range);
END_DECLS
/**@}*/

11
lib/stm32/l0/rcc.c
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@ -391,6 +391,17 @@ void rcc_set_hpre(uint32_t hpre)
RCC_CFGR = reg | (hpre << RCC_CFGR_HPRE_SHIFT);
}
/*---------------------------------------------------------------------------*/
/** @brief Set the range of the MSI oscillator
*
* @param range desired range @ref rcc_icscr_msirange
*/
void rcc_set_msi_range(uint32_t msi_range)
{
uint32_t reg32 = RCC_ICSCR & ~(RCC_ICSCR_MSIRANGE_MASK << RCC_ICSCR_MSIRANGE_SHIFT);
RCC_ICSCR = reg32 | (msi_range << RCC_ICSCR_MSIRANGE_SHIFT);
}
/**
* Set up sysclock with PLL from HSI16
* @param clock full struct with desired parameters