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stm32: added peripheral clock get helpers for all stm32 platforms.

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Allows for abstraction for code that's dependent on knowing the source clock
for a peripheral. Implemented a few core peripherals that tend to have clock
tree differences between platforms (USART, timers, I2C, SPI).
This commit is contained in:
Brian Viele
2020-03-06 00:57:21 -05:00
committed by Karl Palsson
parent df55d45cc1
commit e41ac6ea71
24 changed files with 860 additions and 94 deletions
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5
include/libopencm3/stm32/l0/rcc.h
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@@ -709,11 +709,14 @@ void rcc_clock_setup_pll(const struct rcc_clock_scale *clock);
void rcc_set_msi_range(uint32_t msi_range);
void rcc_set_peripheral_clk_sel(uint32_t periph, uint32_t sel);
void rcc_set_lptim1_sel(uint32_t lptim1_sel);
void rcc_set_lpuart1_sel(uint32_t lpupart1_sel);
void rcc_set_usart1_sel(uint32_t usart1_sel);
void rcc_set_usart2_sel(uint32_t usart2_sel);
uint32_t rcc_get_usart_clk_freq(uint32_t usart);
uint32_t rcc_get_timer_clk_freq(uint32_t timer);
uint32_t rcc_get_i2c_clk_freq(uint32_t i2c);
uint32_t rcc_get_spi_clk_freq(uint32_t spi);
END_DECLS