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stm32/h7: Implemented support for the LSI clock source

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dragonmux
2024-05-13 23:23:24 +01:00
committed by Piotr Esden-Tempski
parent 683c35de54
commit 26cb7f0ded
2 changed files with 12 additions and 0 deletions
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5
include/libopencm3/stm32/h7/rcc.h
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@@ -778,6 +778,11 @@ void rcc_clock_setup_pll(const struct rcc_pll_config *config);
*/ */
void rcc_clock_setup_hsi48(void); void rcc_clock_setup_hsi48(void);
/**
* Setup and bring up the LSI.
*/
void rcc_clock_setup_lsi(void);
/** /**
* Get the clock rate (in Hz) of the specified clock source. There are * Get the clock rate (in Hz) of the specified clock source. There are
* numerous clock sources and configurations on the H7, so rates for each * numerous clock sources and configurations on the H7, so rates for each

7
lib/stm32/h7/rcc.c
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@@ -230,6 +230,13 @@ void rcc_clock_setup_hsi48(void)
continue; continue;
} }
void rcc_clock_setup_lsi(void)
{
RCC_CSR |= RCC_CSR_LSION;
while (!(RCC_CSR & RCC_CSR_LSIRDY))
continue;
}
uint32_t rcc_get_bus_clk_freq(enum rcc_clock_source source) { uint32_t rcc_get_bus_clk_freq(enum rcc_clock_source source) {
uint32_t clksel; uint32_t clksel;
switch (source) { switch (source) {