Defines
#define	__LL_I2C_FREQ_HZ_TO_MHZ(__PCLK__) (uint32_t)((__PCLK__)/1000000U)
	Convert Peripheral Clock Frequency in Mhz.
#define	__LL_I2C_FREQ_MHZ_TO_HZ(__PCLK__) (uint32_t)((__PCLK__)*1000000U)
	Convert Peripheral Clock Frequency in Hz.
#define	__LL_I2C_RISE_TIME(__FREQRANGE__, __SPEED__) (uint32_t)(((__SPEED__) <= LL_I2C_MAX_SPEED_STANDARD) ? ((__FREQRANGE__) + 1U) : ((((__FREQRANGE__) * 300U) / 1000U) + 1U))
	Compute I2C Clock rising time.
#define	__LL_I2C_SPEED_TO_CCR(__PCLK__, __SPEED__, __DUTYCYCLE__)
	Compute Speed clock range to a Clock Control Register (I2C_CCR_CCR) value.
#define	__LL_I2C_SPEED_STANDARD_TO_CCR(__PCLK__, __SPEED__) (uint32_t)(((((__PCLK__)/((__SPEED__) << 1U)) & I2C_CCR_CCR) < 4U)? 4U:((__PCLK__) / ((__SPEED__) << 1U)))
	Compute Speed Standard clock range to a Clock Control Register (I2C_CCR_CCR) value.
#define	__LL_I2C_SPEED_FAST_TO_CCR(__PCLK__, __SPEED__, __DUTYCYCLE__)
	Compute Speed Fast clock range to a Clock Control Register (I2C_CCR_CCR) value.
#define	__LL_I2C_10BIT_ADDRESS(__ADDRESS__) ((uint8_t)((uint16_t)((__ADDRESS__) & (uint16_t)(0x00FF))))
	Get the Least significant bits of a 10-Bits address.
#define	__LL_I2C_10BIT_HEADER_WRITE(__ADDRESS__) ((uint8_t)((uint16_t)((uint16_t)(((uint16_t)((__ADDRESS__) & (uint16_t)(0x0300))) >> 7) \| (uint16_t)(0xF0))))
	Convert a 10-Bits address to a 10-Bits header with Write direction.
#define	__LL_I2C_10BIT_HEADER_READ(__ADDRESS__) ((uint8_t)((uint16_t)((uint16_t)(((uint16_t)((__ADDRESS__) & (uint16_t)(0x0300))) >> 7) \| (uint16_t)(0xF1))))
	Convert a 10-Bits address to a 10-Bits header with Read direction.

Define Documentation

#define __LL_I2C_10BIT_ADDRESS ( __ADDRESS__ ) ((uint8_t)((uint16_t)((__ADDRESS__) & (uint16_t)(0x00FF))))

Get the Least significant bits of a 10-Bits address.

Parameters:

__ADDRESS__ This parameter must be a value of a 10-Bits slave address.

Return values:

Value between Min_Data=0x00 and Max_Data=0xFF

Definition at line 332 of file stm32f4xx_ll_i2c.h.

#define __LL_I2C_10BIT_HEADER_READ ( __ADDRESS__ ) ((uint8_t)((uint16_t)((uint16_t)(((uint16_t)((__ADDRESS__) & (uint16_t)(0x0300))) >> 7) | (uint16_t)(0xF1))))

Convert a 10-Bits address to a 10-Bits header with Read direction.

Parameters:

__ADDRESS__ This parameter must be a value of a 10-Bits slave address.

Return values:

Value between Min_Data=0xF1 and Max_Data=0xF7

Definition at line 346 of file stm32f4xx_ll_i2c.h.

#define __LL_I2C_10BIT_HEADER_WRITE ( __ADDRESS__ ) ((uint8_t)((uint16_t)((uint16_t)(((uint16_t)((__ADDRESS__) & (uint16_t)(0x0300))) >> 7) | (uint16_t)(0xF0))))

Convert a 10-Bits address to a 10-Bits header with Write direction.

Parameters:

__ADDRESS__ This parameter must be a value of a 10-Bits slave address.

Return values:

Value between Min_Data=0xF0 and Max_Data=0xF6

Definition at line 339 of file stm32f4xx_ll_i2c.h.

#define __LL_I2C_FREQ_HZ_TO_MHZ ( __PCLK__ ) (uint32_t)((__PCLK__)/1000000U)

Convert Peripheral Clock Frequency in Mhz.

Parameters:

__PCLK__ This parameter must be a value of peripheral clock (in Hz).

Return values:

Value of peripheral clock (in Mhz)

Definition at line 276 of file stm32f4xx_ll_i2c.h.

Referenced by LL_I2C_ConfigSpeed(), and LL_I2C_SetPeriphClock().

#define __LL_I2C_FREQ_MHZ_TO_HZ ( __PCLK__ ) (uint32_t)((__PCLK__)*1000000U)

Convert Peripheral Clock Frequency in Hz.

Parameters:

__PCLK__ This parameter must be a value of peripheral clock (in Mhz).

Return values:

Value of peripheral clock (in Hz)

Definition at line 283 of file stm32f4xx_ll_i2c.h.

Referenced by LL_I2C_GetPeriphClock().

#define __LL_I2C_RISE_TIME	(	__FREQRANGE__,
		__SPEED__
	)	(uint32_t)(((__SPEED__) <= LL_I2C_MAX_SPEED_STANDARD) ? ((__FREQRANGE__) + 1U) : ((((__FREQRANGE__) * 300U) / 1000U) + 1U))

Compute I2C Clock rising time.

Parameters:

__FREQRANGE__	This parameter must be a value of peripheral clock (in Mhz).
__SPEED__	This parameter must be a value lower than 400kHz (in Hz).

Return values:

Value between Min_Data=0x02 and Max_Data=0x3F

Definition at line 291 of file stm32f4xx_ll_i2c.h.

Referenced by LL_I2C_ConfigSpeed().

#define __LL_I2C_SPEED_FAST_TO_CCR	(	__PCLK__,
		__SPEED__,
		__DUTYCYCLE__
	)

Value:

(uint32_t)(((__DUTYCYCLE__) == LL_I2C_DUTYCYCLE_2)? \
                                                                            (((((__PCLK__) / ((__SPEED__) * 3U)) & I2C_CCR_CCR) == 0U)? 1U:((__PCLK__) / ((__SPEED__) * 3U))) : \
                                                                            (((((__PCLK__) / ((__SPEED__) * 25U)) & I2C_CCR_CCR) == 0U)? 1U:((__PCLK__) / ((__SPEED__) * 25U))))

Compute Speed Fast clock range to a Clock Control Register (I2C_CCR_CCR) value.

Parameters:

__PCLK__	This parameter must be a value of peripheral clock (in Hz).
__SPEED__	This parameter must be a value between Min_Data=100Khz and Max_Data=400Khz (in Hz).
__DUTYCYCLE__	This parameter can be one of the following values: LL_I2C_DUTYCYCLE_2 LL_I2C_DUTYCYCLE_16_9

Return values:

Value between Min_Data=0x001 and Max_Data=0xFFF

Definition at line 323 of file stm32f4xx_ll_i2c.h.

#define __LL_I2C_SPEED_STANDARD_TO_CCR	(	__PCLK__,
		__SPEED__
	)	(uint32_t)(((((__PCLK__)/((__SPEED__) << 1U)) & I2C_CCR_CCR) < 4U)? 4U:((__PCLK__) / ((__SPEED__) << 1U)))

Compute Speed Standard clock range to a Clock Control Register (I2C_CCR_CCR) value.

Parameters:

__PCLK__	This parameter must be a value of peripheral clock (in Hz).
__SPEED__	This parameter must be a value lower than 100kHz (in Hz).

Return values:

Value between Min_Data=0x004 and Max_Data=0xFFF.

Definition at line 312 of file stm32f4xx_ll_i2c.h.

#define __LL_I2C_SPEED_TO_CCR	(	__PCLK__,
		__SPEED__,
		__DUTYCYCLE__
	)

Value:

(uint32_t)(((__SPEED__) <= LL_I2C_MAX_SPEED_STANDARD)? \
                                                                                  (__LL_I2C_SPEED_STANDARD_TO_CCR((__PCLK__), (__SPEED__))) : \
                                                                                  (__LL_I2C_SPEED_FAST_TO_CCR((__PCLK__), (__SPEED__), (__DUTYCYCLE__))))

Compute Speed clock range to a Clock Control Register (I2C_CCR_CCR) value.

Parameters:

__PCLK__	This parameter must be a value of peripheral clock (in Hz).
__SPEED__	This parameter must be a value lower than 400kHz (in Hz).
__DUTYCYCLE__	This parameter can be one of the following values: LL_I2C_DUTYCYCLE_2 LL_I2C_DUTYCYCLE_16_9

Return values:

Value between Min_Data=0x004 and Max_Data=0xFFF, except in FAST DUTY mode where Min_Data=0x001.

Definition at line 302 of file stm32f4xx_ll_i2c.h.

Defines

Define Documentation