stm32u0_clock.h File Reference

#include "stm32_common_clocks.h"

Go to the source code of this file.

Macros
#define	STM32_CLOCK_BUS_AHB1   0x48
	Bus gatting clocks.
#define	STM32_CLOCK_BUS_IOP   0x4C
#define	STM32_CLOCK_BUS_APB1   0x58
#define	STM32_CLOCK_BUS_APB1_2   0x60
#define	STM32_PERIPH_BUS_MIN   STM32_CLOCK_BUS_AHB1
#define	STM32_PERIPH_BUS_MAX   STM32_CLOCK_BUS_APB1_2
#define	STM32_SRC_HSI   (STM32_SRC_LSI + 1)
	Domain clocks.
#define	STM32_SRC_HSI48   (STM32_SRC_HSI + 1)
#define	STM32_SRC_MSI   (STM32_SRC_HSI48 + 1)
#define	STM32_SRC_HSE   (STM32_SRC_MSI + 1)
#define	STM32_SRC_PCLK   (STM32_SRC_HSE + 1)
	Peripheral bus clock.
#define	STM32_SRC_PLL_P   (STM32_SRC_PCLK + 1)
	PLL clock outputs.
#define	STM32_SRC_PLL_Q   (STM32_SRC_PLL_P + 1)
#define	STM32_SRC_PLL_R   (STM32_SRC_PLL_Q + 1)
#define	STM32_CLOCK_REG_MASK   0xFFU
#define	STM32_CLOCK_REG_SHIFT   0U
#define	STM32_CLOCK_SHIFT_MASK   0x1FU
#define	STM32_CLOCK_SHIFT_SHIFT   8U
#define	STM32_CLOCK_MASK_MASK   0x7U
#define	STM32_CLOCK_MASK_SHIFT   13U
#define	STM32_CLOCK_VAL_MASK   0x7U
#define	STM32_CLOCK_VAL_SHIFT   16U
#define	STM32_DOMAIN_CLOCK(val, mask, shift, reg)
	STM32 clock configuration bit field.
#define	CCIPR_REG   0x88
	RCC_CCIPR register offset.
#define	BDCR_REG   0x90
	RCC_BDCR register offset.
#define	USART1_SEL(val)
	Device domain clocks selection helpers.
#define	USART2_SEL(val)
#define	LPUART3_SEL(val)
#define	LPUART2_SEL(val)
#define	LPUART1_SEL(val)
#define	I2C1_SEL(val)
#define	I2C3_SEL(val)
#define	LPTIM1_SEL(val)
#define	LPTIM2_SEL(val)
#define	LPTIM3_SEL(val)
#define	TIM1_SEL(val)
#define	TIM15_SEL(val)
#define	CLK48_SEL(val)
#define	ADC_SEL(val)
#define	RTC_SEL(val)
	BDCR devices.

Macro Definition Documentation

ADC_SEL

#define ADC_SEL

(

val

)

Value:

STM32_DOMAIN_CLOCK(val, 3, 28, CCIPR_REG)

BDCR_REG

#define BDCR_REG   0x90

RCC_BDCR register offset.

CCIPR_REG

#define CCIPR_REG   0x88

RCC_CCIPR register offset.

CLK48_SEL

#define CLK48_SEL

(

val

)

Value:

STM32_DOMAIN_CLOCK(val, 3, 26, CCIPR_REG)

I2C1_SEL

#define I2C1_SEL

(

val

)

Value:

STM32_DOMAIN_CLOCK(val, 3, 12, CCIPR_REG)

I2C3_SEL

#define I2C3_SEL

(

val

)

Value:

STM32_DOMAIN_CLOCK(val, 3, 16, CCIPR_REG)

LPTIM1_SEL

#define LPTIM1_SEL

(

val

)

Value:

STM32_DOMAIN_CLOCK(val, 3, 18, CCIPR_REG)

LPTIM2_SEL

#define LPTIM2_SEL

(

val

)

Value:

STM32_DOMAIN_CLOCK(val, 3, 20, CCIPR_REG)

LPTIM3_SEL

#define LPTIM3_SEL

(

val

)

Value:

STM32_DOMAIN_CLOCK(val, 3, 22, CCIPR_REG)

LPUART1_SEL

#define LPUART1_SEL

(

val

)

Value:

STM32_DOMAIN_CLOCK(val, 3, 10, CCIPR_REG)

LPUART2_SEL

#define LPUART2_SEL

(

val

)

Value:

STM32_DOMAIN_CLOCK(val, 3, 8, CCIPR_REG)

LPUART3_SEL

#define LPUART3_SEL

(

val

)

Value:

STM32_DOMAIN_CLOCK(val, 3, 6, CCIPR_REG)

RTC_SEL

#define RTC_SEL

(

val

)

Value:

STM32_DOMAIN_CLOCK(val, 3, 8, BDCR_REG)

BDCR devices.

STM32_CLOCK_BUS_AHB1

#define STM32_CLOCK_BUS_AHB1   0x48

Bus gatting clocks.

STM32_CLOCK_BUS_APB1

#define STM32_CLOCK_BUS_APB1   0x58

STM32_CLOCK_BUS_APB1_2

#define STM32_CLOCK_BUS_APB1_2   0x60

STM32_CLOCK_BUS_IOP

#define STM32_CLOCK_BUS_IOP   0x4C

STM32_CLOCK_MASK_MASK

#define STM32_CLOCK_MASK_MASK   0x7U

STM32_CLOCK_MASK_SHIFT

#define STM32_CLOCK_MASK_SHIFT   13U

STM32_CLOCK_REG_MASK

#define STM32_CLOCK_REG_MASK   0xFFU

STM32_CLOCK_REG_SHIFT

#define STM32_CLOCK_REG_SHIFT   0U

STM32_CLOCK_SHIFT_MASK

#define STM32_CLOCK_SHIFT_MASK   0x1FU

STM32_CLOCK_SHIFT_SHIFT

#define STM32_CLOCK_SHIFT_SHIFT   8U

STM32_CLOCK_VAL_MASK

#define STM32_CLOCK_VAL_MASK   0x7U

STM32_CLOCK_VAL_SHIFT

#define STM32_CLOCK_VAL_SHIFT   16U

STM32_DOMAIN_CLOCK

#define STM32_DOMAIN_CLOCK	(		val,
			mask,
			shift,
			reg )

Value:

        ((((reg) & STM32_CLOCK_REG_MASK) << STM32_CLOCK_REG_SHIFT) |            \
         (((shift) & STM32_CLOCK_SHIFT_MASK) << STM32_CLOCK_SHIFT_SHIFT) |      \
         (((mask) & STM32_CLOCK_MASK_MASK) << STM32_CLOCK_MASK_SHIFT) |         \
         (((val) & STM32_CLOCK_VAL_MASK) << STM32_CLOCK_VAL_SHIFT))

STM32 clock configuration bit field.

• reg (1/2/3) [ 0 : 7 ]
• shift (0..31) [ 8 : 12 ]
• mask (0x1, 0x3, 0x7) [ 13 : 15 ]
• val (0..7) [ 16 : 18 ]

Parameters

reg	RCC_CCIPRx register offset
shift	Position within RCC_CCIPRx.
mask	Mask for the RCC_CCIPRx field.
val	Clock value (0, 1, ... 7).

STM32_PERIPH_BUS_MAX

#define STM32_PERIPH_BUS_MAX   STM32_CLOCK_BUS_APB1_2

STM32_PERIPH_BUS_MIN

#define STM32_PERIPH_BUS_MIN   STM32_CLOCK_BUS_AHB1

STM32_SRC_HSE

#define STM32_SRC_HSE   (STM32_SRC_MSI + 1)

STM32_SRC_HSI

#define STM32_SRC_HSI   (STM32_SRC_LSI + 1)

Domain clocks.

System clock Fixed clocks

STM32_SRC_HSI48

#define STM32_SRC_HSI48   (STM32_SRC_HSI + 1)

STM32_SRC_MSI

#define STM32_SRC_MSI   (STM32_SRC_HSI48 + 1)

STM32_SRC_PCLK

#define STM32_SRC_PCLK   (STM32_SRC_HSE + 1)

Peripheral bus clock.

STM32_SRC_PLL_P

#define STM32_SRC_PLL_P   (STM32_SRC_PCLK + 1)

PLL clock outputs.

STM32_SRC_PLL_Q

#define STM32_SRC_PLL_Q   (STM32_SRC_PLL_P + 1)

STM32_SRC_PLL_R

#define STM32_SRC_PLL_R   (STM32_SRC_PLL_Q + 1)

TIM15_SEL

#define TIM15_SEL

(

val

)

Value:

STM32_DOMAIN_CLOCK(val, 1, 25, CCIPR_REG)

TIM1_SEL

#define TIM1_SEL

(

val

)

Value:

STM32_DOMAIN_CLOCK(val, 1, 24, CCIPR_REG)

USART1_SEL

#define USART1_SEL

(

val

)

Value:

STM32_DOMAIN_CLOCK(val, 3, 0, CCIPR_REG)

Device domain clocks selection helpers.

CCIPR devices

USART2_SEL

#define USART2_SEL

(

val

)

Value:

STM32_DOMAIN_CLOCK(val, 3, 2, CCIPR_REG)