Common CPU definitions for the STM32 family. More...

Detailed Description

Common CPU definitions for the STM32 family.

Author: Hauke Petersen hauke.nosp@m..pet.nosp@m.ersen.nosp@m.@fu-.nosp@m.berli.nosp@m.n.de; Vincent Dupont vince.nosp@m.nt@o.nosp@m.takey.nosp@m.s.co.nosp@m.m

Definition in file cpu_common.h.

#include <stdint.h>
#include "cpu_conf.h"

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#define	CPUID_LEN (12U)
	Length of the CPU_ID in octets. More...

#define	CPUID_ADDR (UID_BASE)
	Starting address of the CPU ID.

enum	bus_t { AHB , APB1 , APB2 , BUS_NUMOF }
	CPU specific LSI clock speed. More...

uint32_t	periph_apb_clk (bus_t bus)
	Get the actual bus clock frequency for the APB buses. More...

uint32_t	periph_timer_clk (bus_t bus)
	Get the actual timer clock frequency. More...

void	periph_clk_en (bus_t bus, uint32_t mask)
	Enable the given peripheral clock. More...

void	periph_clk_dis (bus_t bus, uint32_t mask)
	Disable the given peripheral clock. More...

void	periph_lpclk_en (bus_t bus, uint32_t mask)
	Enable the given peripheral clock in low power mode. More...

void	periph_lpclk_dis (bus_t bus, uint32_t mask)
	Disable the given peripheral clock in low power mode. More...

Macro Definition Documentation

◆ CPUID_LEN

#define CPUID_LEN (12U)

Length of the CPU_ID in octets.

This is the same for all members of the stm32 family

Definition at line 41 of file cpu_common.h.

Enumeration Type Documentation

◆ bus_t

enum bus_t

CPU specific LSI clock speed.

Available peripheral buses

Enumerator
AHB	Advanced High-performance Bus.
APB1	Advanced Peripheral Bus 1
APB2	Advanced Peripheral Bus 2
BUS_NUMOF	number of buses

Definition at line 176 of file cpu_common.h.

Function Documentation

◆ periph_apb_clk()

uint32_t periph_apb_clk ( bus_t bus )

Get the actual bus clock frequency for the APB buses.

Parameters

[in] bus target APBx bus

Returns: bus clock frequency in Hz

◆ periph_clk_dis()

void periph_clk_dis	(	bus_t	bus,
		uint32_t	mask
	)

Disable the given peripheral clock.

Parameters

[in]	bus	bus the peripheral is connected to
[in]	mask	bit in the RCC enable register

◆ periph_clk_en()

void periph_clk_en	(	bus_t	bus,
		uint32_t	mask
	)

Enable the given peripheral clock.

Parameters

[in]	bus	bus the peripheral is connected to
[in]	mask	bit in the RCC enable register

◆ periph_lpclk_dis()

void periph_lpclk_dis	(	bus_t	bus,
		uint32_t	mask
	)

Disable the given peripheral clock in low power mode.

Parameters

[in]	bus	bus the peripheral is connected to
[in]	mask	bit in the RCC enable register

◆ periph_lpclk_en()

void periph_lpclk_en	(	bus_t	bus,
		uint32_t	mask
	)

Enable the given peripheral clock in low power mode.

Parameters

[in]	bus	bus the peripheral is connected to
[in]	mask	bit in the RCC enable register

◆ periph_timer_clk()

uint32_t periph_timer_clk ( bus_t bus )

Get the actual timer clock frequency.

Parameters

[in] bus corresponding APBx bus

Returns: timer clock frequency in Hz