Zephyr API Documentation  3.6.99
A Scalable Open Source RTOS
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stm32l0_clock.h File Reference

Go to the source code of this file.

Macros

#define STM32_CLOCK_BUS_IOP   0x02c
 Bus gatting clocks.
 
#define STM32_CLOCK_BUS_AHB1   0x030
 
#define STM32_CLOCK_BUS_APB2   0x034
 
#define STM32_CLOCK_BUS_APB1   0x038
 
#define STM32_PERIPH_BUS_MIN   STM32_CLOCK_BUS_IOP
 
#define STM32_PERIPH_BUS_MAX   STM32_CLOCK_BUS_APB1
 
#define STM32_SRC_HSE   (STM32_SRC_LSI + 1)
 Domain clocks.
 
#define STM32_SRC_HSI   (STM32_SRC_HSE + 1)
 
#define STM32_SRC_HSI48   (STM32_SRC_HSI + 1)
 
#define STM32_SRC_PCLK   (STM32_SRC_HSI48 + 1)
 Bus clock.
 
#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.
 
#define CCIPR_REG   0x4C
 RCC_CCIPR register offset.
 
#define CSR_REG   0x50
 RCC_CSR register offset.
 
#define USART1_SEL(val)   STM32_CLOCK(val, 3, 0, CCIPR_REG)
 Device domain clocks selection helpers.
 
#define USART2_SEL(val)   STM32_CLOCK(val, 3, 2, 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 I2C3_SEL(val)   STM32_CLOCK(val, 3, 16, CCIPR_REG)
 
#define LPTIM1_SEL(val)   STM32_CLOCK(val, 3, 18, CCIPR_REG)
 
#define HSI48_SEL(val)   STM32_CLOCK(val, 1, 26, CCIPR_REG)
 
#define RTC_SEL(val)   STM32_CLOCK(val, 3, 16, CSR_REG)
 CSR devices.
 

Macro Definition Documentation

◆ CCIPR_REG

#define CCIPR_REG   0x4C

RCC_CCIPR register offset.

◆ CSR_REG

#define CSR_REG   0x50

RCC_CSR register offset.

◆ HSI48_SEL

#define HSI48_SEL (   val)    STM32_CLOCK(val, 1, 26, CCIPR_REG)

◆ I2C1_SEL

#define I2C1_SEL (   val)    STM32_CLOCK(val, 3, 12, CCIPR_REG)

◆ I2C3_SEL

#define I2C3_SEL (   val)    STM32_CLOCK(val, 3, 16, CCIPR_REG)

◆ LPTIM1_SEL

#define LPTIM1_SEL (   val)    STM32_CLOCK(val, 3, 18, CCIPR_REG)

◆ LPUART1_SEL

#define LPUART1_SEL (   val)    STM32_CLOCK(val, 3, 10, CCIPR_REG)

◆ RTC_SEL

#define RTC_SEL (   val)    STM32_CLOCK(val, 3, 16, CSR_REG)

CSR devices.

◆ STM32_CLOCK

#define STM32_CLOCK (   val,
  mask,
  shift,
  reg 
)
Value:
#define STM32_CLOCK_SHIFT_SHIFT
Definition: stm32l0_clock.h:37
#define STM32_CLOCK_REG_SHIFT
Definition: stm32l0_clock.h:35
#define STM32_CLOCK_REG_MASK
Definition: stm32l0_clock.h:34
#define STM32_CLOCK_MASK_MASK
Definition: stm32l0_clock.h:38
#define STM32_CLOCK_VAL_MASK
Definition: stm32l0_clock.h:40
#define STM32_CLOCK_MASK_SHIFT
Definition: stm32l0_clock.h:39
#define STM32_CLOCK_VAL_SHIFT
Definition: stm32l0_clock.h:41
#define STM32_CLOCK_SHIFT_MASK
Definition: stm32l0_clock.h:36

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
regRCC_CCIPRx register offset
shiftPosition within RCC_CCIPRx.
maskMask for the RCC_CCIPRx field.
valClock value (0, 1, ... 7).

◆ STM32_CLOCK_BUS_AHB1

#define STM32_CLOCK_BUS_AHB1   0x030

◆ STM32_CLOCK_BUS_APB1

#define STM32_CLOCK_BUS_APB1   0x038

◆ STM32_CLOCK_BUS_APB2

#define STM32_CLOCK_BUS_APB2   0x034

◆ STM32_CLOCK_BUS_IOP

#define STM32_CLOCK_BUS_IOP   0x02c

Bus gatting clocks.

◆ 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_APB1

◆ STM32_PERIPH_BUS_MIN

#define STM32_PERIPH_BUS_MIN   STM32_CLOCK_BUS_IOP

◆ STM32_SRC_HSE

#define STM32_SRC_HSE   (STM32_SRC_LSI + 1)

Domain clocks.

System clock Fixed clocks

◆ STM32_SRC_HSI

#define STM32_SRC_HSI   (STM32_SRC_HSE + 1)

◆ STM32_SRC_HSI48

#define STM32_SRC_HSI48   (STM32_SRC_HSI + 1)

◆ STM32_SRC_PCLK

#define STM32_SRC_PCLK   (STM32_SRC_HSI48 + 1)

Bus clock.

◆ 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)