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stm32f1: rcc: provide struct based clock helpers

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As on every other family.

Fixes: https://github.com/libopencm3/libopencm3/issues/1172
This commit is contained in:
Karl Palsson
2020-10-25 17:33:34 +00:00
parent a7902aa4d0
commit 5f051241a8
2 changed files with 233 additions and 0 deletions
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47
include/libopencm3/stm32/f1/rcc.h
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@@ -704,6 +704,45 @@ enum rcc_periph_rst {
#include <libopencm3/stm32/common/rcc_common_all.h>
enum rcc_clock_hsi {
RCC_CLOCK_HSI_24MHZ,
RCC_CLOCK_HSI_48MHZ,
RCC_CLOCK_HSI_64MHZ,
RCC_CLOCK_HSI_END
};
enum rcc_clock_hse {
RCC_CLOCK_HSE12_72MHZ,
RCC_CLOCK_HSE16_72MHZ,
RCC_CLOCK_HSE25_72MHZ,
RCC_CLOCK_HSE8_24MHZ,
RCC_CLOCK_HSE8_72MHZ,
RCC_CLOCK_HSE_END
};
/* Union of all options for f100 through to f107 */
struct rcc_clock_scale {
uint8_t pll_mul;
uint8_t pll_source;
uint8_t hpre;
uint8_t ppre1;
uint8_t ppre2;
uint8_t adcpre;
uint8_t flash_waitstates;
uint8_t prediv1; /* aka xtpre, only one bit on smaller parts */
uint8_t prediv1_source;
uint8_t prediv2;
uint8_t pll2_mul;
uint8_t pll3_mul;
uint8_t usbpre;
uint32_t ahb_frequency;
uint32_t apb1_frequency;
uint32_t apb2_frequency;
};
extern const struct rcc_clock_scale rcc_hsi_configs[RCC_CLOCK_HSI_END];
extern const struct rcc_clock_scale rcc_hse_configs[RCC_CLOCK_HSE_END];
BEGIN_DECLS
void rcc_osc_ready_int_clear(enum rcc_osc osc);
@@ -742,6 +781,14 @@ void rcc_clock_setup_in_hse_8mhz_out_72mhz(void);
void rcc_clock_setup_in_hse_12mhz_out_72mhz(void);
void rcc_clock_setup_in_hse_16mhz_out_72mhz(void);
void rcc_clock_setup_in_hse_25mhz_out_72mhz(void);
/**
* Switch sysclock to PLL with the given parameters.
* This should be usable from any point in time, but only if you have used
* library functions to manage clocks.
* @param clock full struct with desired parameters
*/
void rcc_clock_setup_pll(const struct rcc_clock_scale *clock);
void rcc_backupdomain_reset(void);
END_DECLS