stm32l4_clock.h File Reference

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Macros
#define	STM32_CLOCK_BUS_AHB1   0x048
#define	STM32_CLOCK_BUS_AHB2   0x04c
#define	STM32_CLOCK_BUS_AHB3   0x050
#define	STM32_CLOCK_BUS_APB1   0x058
#define	STM32_CLOCK_BUS_APB1_2   0x05c
#define	STM32_CLOCK_BUS_APB2   0x060
#define	STM32_PERIPH_BUS_MIN   STM32_CLOCK_BUS_AHB1
#define	STM32_PERIPH_BUS_MAX   STM32_CLOCK_BUS_APB2
#define	STM32_SRC_HSI   0x001
#define	STM32_SRC_HSI48   0x002
#define	STM32_SRC_LSE   0x003
#define	STM32_SRC_LSI   0x004
#define	STM32_SRC_MSI   0x005
#define	STM32_SRC_SYSCLK   0x006
#define	STM32_SRC_PCLK   0x007
#define	STM32_SRC_PLL_P   0x008
#define	STM32_SRC_PLL_Q   0x009
#define	STM32_SRC_PLL_R   0x00a
#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_CLOCK(val, mask, shift, reg)
	STM32 clock configuration bit field. More...
#define	CCIPR_REG   0x88
	RCC_CCIPR register offset. More...
#define	CCIPR2_REG   0x9C
#define	BDCR_REG   0x90
	RCC_BDCR register offset. More...
#define	USART1_SEL(val)   STM32_CLOCK(val, 3, 0, CCIPR_REG)
	Device domain clocks selection helpers. More...
#define	USART2_SEL(val)   STM32_CLOCK(val, 3, 2, CCIPR_REG)
#define	USART3_SEL(val)   STM32_CLOCK(val, 3, 4, CCIPR_REG)
#define	UART4_SEL(val)   STM32_CLOCK(val, 3, 6, CCIPR_REG)
#define	UART5_SEL(val)   STM32_CLOCK(val, 3, 8, CCIPR_REG)
#define	LPUART1_SEL(val)   STM32_CLOCK(val, 3, 10, CCIPR_REG)
#define	I2C1_SEL(val)   STM32_CLOCK(val, 3, 12, CCIPR_REG)
#define	I2C2_SEL(val)   STM32_CLOCK(val, 3, 14, CCIPR_REG)
#define	I2C3_SEL(val)   STM32_CLOCK(val, 3, 16, CCIPR_REG)
#define	LPTIM1_SEL(val)   STM32_CLOCK(val, 3, 18, CCIPR_REG)
#define	LPTIM2_SEL(val)   STM32_CLOCK(val, 3, 20, CCIPR_REG)
#define	SAI1_SEL(val)   STM32_CLOCK(val, 3, 22, CCIPR_REG)
#define	SAI2_SEL(val)   STM32_CLOCK(val, 3, 24, CCIPR_REG)
#define	CLK48_SEL(val)   STM32_CLOCK(val, 3, 26, CCIPR_REG)
#define	ADC_SEL(val)   STM32_CLOCK(val, 3, 28, CCIPR_REG)
#define	SWPMI1_SEL(val)   STM32_CLOCK(val, 1, 30, CCIPR_REG)
#define	DFSDM1_SEL(val)   STM32_CLOCK(val, 1, 31, CCIPR_REG)
#define	I2C4_SEL(val)   STM32_CLOCK(val, 3, 0, CCIPR2_REG)
#define	DFSDM_SEL(val)   STM32_CLOCK(val, 1, 2, CCIPR2_REG)
#define	ADFSDM_SEL(val)   STM32_CLOCK(val, 3, 3, CCIPR2_REG)
#define	DSI_SEL(val)   STM32_CLOCK(val, 1, 12, CCIPR2_REG)
#define	SDMMC_SEL(val)   STM32_CLOCK(val, 1, 14, CCIPR2_REG)
#define	OSPI_SEL(val)   STM32_CLOCK(val, 3, 20, CCIPR2_REG)
#define	RTC_SEL(val)   STM32_CLOCK(val, 3, 8, BDCR_REG)
#define	NO_SEL   0xFF

Macro Definition Documentation

ADC_SEL

#define ADC_SEL

(

val

)

STM32_CLOCK(val, 3, 28, CCIPR_REG)

ADFSDM_SEL

#define ADFSDM_SEL

(

val

)

STM32_CLOCK(val, 3, 3, CCIPR2_REG)

BDCR_REG

#define BDCR_REG   0x90

RCC_BDCR register offset.

CCIPR2_REG

#define CCIPR2_REG   0x9C

CCIPR_REG

#define CCIPR_REG   0x88

RCC_CCIPR register offset.

CLK48_SEL

#define CLK48_SEL

(

val

)

STM32_CLOCK(val, 3, 26, CCIPR_REG)

DFSDM1_SEL

#define DFSDM1_SEL

(

val

)

STM32_CLOCK(val, 1, 31, CCIPR_REG)

DFSDM_SEL

#define DFSDM_SEL

(

val

)

STM32_CLOCK(val, 1, 2, CCIPR2_REG)

DSI_SEL

#define DSI_SEL

(

val

)

STM32_CLOCK(val, 1, 12, CCIPR2_REG)

I2C1_SEL

#define I2C1_SEL

(

val

)

STM32_CLOCK(val, 3, 12, CCIPR_REG)

I2C2_SEL

#define I2C2_SEL

(

val

)

STM32_CLOCK(val, 3, 14, CCIPR_REG)

I2C3_SEL

#define I2C3_SEL

(

val

)

STM32_CLOCK(val, 3, 16, CCIPR_REG)

I2C4_SEL

#define I2C4_SEL

(

val

)

STM32_CLOCK(val, 3, 0, CCIPR2_REG)

CCIPR2 devices

LPTIM1_SEL

#define LPTIM1_SEL

(

val

)

STM32_CLOCK(val, 3, 18, CCIPR_REG)

LPTIM2_SEL

#define LPTIM2_SEL

(

val

)

STM32_CLOCK(val, 3, 20, CCIPR_REG)

LPUART1_SEL

#define LPUART1_SEL

(

val

)

STM32_CLOCK(val, 3, 10, CCIPR_REG)

NO_SEL

#define NO_SEL   0xFF

Dummy: Add a specificier when no selection is possible

OSPI_SEL

#define OSPI_SEL

(

val

)

STM32_CLOCK(val, 3, 20, CCIPR2_REG)

RTC_SEL

#define RTC_SEL

(

val

)

STM32_CLOCK(val, 3, 8, BDCR_REG)

BDCR devices

SAI1_SEL

#define SAI1_SEL

(

val

)

STM32_CLOCK(val, 3, 22, CCIPR_REG)

SAI2_SEL

#define SAI2_SEL

(

val

)

STM32_CLOCK(val, 3, 24, CCIPR_REG)

SDMMC_SEL

#define SDMMC_SEL

(

val

)

STM32_CLOCK(val, 1, 14, CCIPR2_REG)

STM32_CLOCK

#define STM32_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_CLOCK_BUS_AHB1

#define STM32_CLOCK_BUS_AHB1   0x048

Bus clocks

STM32_CLOCK_BUS_AHB2

#define STM32_CLOCK_BUS_AHB2   0x04c

STM32_CLOCK_BUS_AHB3

#define STM32_CLOCK_BUS_AHB3   0x050

STM32_CLOCK_BUS_APB1

#define STM32_CLOCK_BUS_APB1   0x058

STM32_CLOCK_BUS_APB1_2

#define STM32_CLOCK_BUS_APB1_2   0x05c

STM32_CLOCK_BUS_APB2

#define STM32_CLOCK_BUS_APB2   0x060

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_PERIPH_BUS_MAX

#define STM32_PERIPH_BUS_MAX   STM32_CLOCK_BUS_APB2

STM32_PERIPH_BUS_MIN

#define STM32_PERIPH_BUS_MIN   STM32_CLOCK_BUS_AHB1

STM32_SRC_HSI

#define STM32_SRC_HSI   0x001

Domain clocks Fixed clocks

STM32_SRC_HSI48

#define STM32_SRC_HSI48   0x002

STM32_SRC_LSE

#define STM32_SRC_LSE   0x003

STM32_SRC_LSI

#define STM32_SRC_LSI   0x004

STM32_SRC_MSI

#define STM32_SRC_MSI   0x005

STM32_SRC_PCLK

#define STM32_SRC_PCLK   0x007

Bus clock

STM32_SRC_PLL_P

#define STM32_SRC_PLL_P   0x008

PLL clock outputs

STM32_SRC_PLL_Q

#define STM32_SRC_PLL_Q   0x009

STM32_SRC_PLL_R

#define STM32_SRC_PLL_R   0x00a

STM32_SRC_SYSCLK

#define STM32_SRC_SYSCLK   0x006

System clock

SWPMI1_SEL

#define SWPMI1_SEL

(

val

)

STM32_CLOCK(val, 1, 30, CCIPR_REG)

UART4_SEL

#define UART4_SEL

(

val

)

STM32_CLOCK(val, 3, 6, CCIPR_REG)

UART5_SEL

#define UART5_SEL

(

val

)

STM32_CLOCK(val, 3, 8, CCIPR_REG)

USART1_SEL

#define USART1_SEL

(

val

)

STM32_CLOCK(val, 3, 0, CCIPR_REG)

Device domain clocks selection helpers.

CCIPR devices

USART2_SEL

#define USART2_SEL

(

val

)

STM32_CLOCK(val, 3, 2, CCIPR_REG)

USART3_SEL

#define USART3_SEL

(

val

)

STM32_CLOCK(val, 3, 4, CCIPR_REG)