Cortex-M4 (STM32F4) Clock HAL Implementation. More...

#include "core/cortex-m4/clock.h"
#include "core/cortex-m4/flash_reg.h"
#include "core/cortex-m4/rcc_reg.h"
#include <stdint.h>

Include dependency graph for clock.c:

Functions
void	_toggle_hse_clock (uint8_t state)
	Initialize system clocks based on the provided configuration.
void	_toggle_hsi_clock (uint8_t state)
void	_toggle_pll_clock (uint8_t state)
void	hal_clock_init (hal_clock_config_t cfg, hal_pll_config_t pll_cfg)
	Initialize the system clock.
uint32_t	hal_clock_get_sysclk (void)
	Get the current system clock frequency in Hz.
uint32_t	hal_clock_get_ahbclk (void)
	Get the current AHB clock frequency.
uint32_t	hal_clock_get_apb1clk (void)
	Get the current APB1 clock frequency.
uint32_t	hal_clock_get_apb2clk (void)
	Get the current APB2 clock frequency.

Detailed Description

Cortex-M4 (STM32F4) Clock HAL Implementation.

Provides functions to initialize and retrieve clock frequencies including SYSCLK, AHB, APB1, and APB2 clocks.

This implementation supports HSI, HSE, and PLL clock sources.

Author: Ashutosh Vishwakarma

Date: 2025-07-21

Function Documentation

◆ _toggle_hse_clock()

void _toggle_hse_clock ( uint8_t state )

Initialize system clocks based on the provided configuration.

Enables and waits for the selected clock source (HSI, HSE, or PLL). If PLL is selected, configures PLL parameters and switches system clock source to PLL output.

Parameters

cfg	Pointer to clock configuration structure specifying source.
pll_cfg	Pointer to PLL configuration structure (used if source is PLL).

◆ _toggle_hsi_clock()

void _toggle_hsi_clock ( uint8_t state )

◆ _toggle_pll_clock()

void _toggle_pll_clock ( uint8_t state )

◆ hal_clock_get_ahbclk()

uint32_t hal_clock_get_ahbclk ( void )

Get the current AHB clock frequency.

Get the AHB bus clock frequency.

Calculated as SYSCLK divided by AHB prescaler.

Returns: AHB bus clock frequency in Hertz.

◆ hal_clock_get_apb1clk()

uint32_t hal_clock_get_apb1clk ( void )

Get the current APB1 clock frequency.

Get the APB1 bus clock frequency.

Calculated as SYSCLK divided by APB1 prescaler.

Returns: APB1 bus clock frequency in Hertz.

◆ hal_clock_get_apb2clk()

uint32_t hal_clock_get_apb2clk ( void )

Get the current APB2 clock frequency.

Get the APB2 bus clock frequency.

Calculated as SYSCLK divided by APB2 prescaler.

Returns: APB2 bus clock frequency in Hertz.

◆ hal_clock_get_sysclk()

uint32_t hal_clock_get_sysclk ( void )

Get the current system clock frequency in Hz.

Get the system clock frequency (SYSCLK).

Detects the current SYSCLK source and calculates frequency based on configured clock source and PLL parameters.

Returns: SYSCLK frequency in Hertz.

◆ hal_clock_init()

void hal_clock_init	(	hal_clock_config_t *	cfg,
		hal_pll_config_t *	pll_cfg )

Initialize the system clock.