STM32F769I_DISCOVERY_LOW_LEVEL Private Functions

Functions
static void	I2Cx_MspInit (I2C_HandleTypeDef *i2c_handler)
	Initializes I2C MSP.
static void	I2Cx_Init (I2C_HandleTypeDef *i2c_handler)
	Initializes I2C HAL.
static HAL_StatusTypeDef	I2Cx_ReadMultiple (I2C_HandleTypeDef *i2c_handler, uint8_t Addr, uint16_t Reg, uint16_t MemAddress, uint8_t *Buffer, uint16_t Length)
	Reads multiple data.
static HAL_StatusTypeDef	I2Cx_WriteMultiple (I2C_HandleTypeDef *i2c_handler, uint8_t Addr, uint16_t Reg, uint16_t MemAddress, uint8_t *Buffer, uint16_t Length)
	Writes a value in a register of the device through BUS in using DMA mode.
static HAL_StatusTypeDef	I2Cx_IsDeviceReady (I2C_HandleTypeDef *i2c_handler, uint16_t DevAddress, uint32_t Trials)
	Checks if target device is ready for communication.
static void	I2Cx_Error (I2C_HandleTypeDef *i2c_handler, uint8_t Addr)
	Manages error callback by re-initializing I2C.

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Function Documentation

static void I2Cx_Error	(	I2C_HandleTypeDef *	i2c_handler,
		uint8_t	Addr
	)		[static]

Manages error callback by re-initializing I2C.

Parameters:

i2c_handler	: I2C handler
Addr,:	I2C Address

Return values:

None

Definition at line 533 of file stm32f769i_discovery.c.

References I2Cx_Init().

Referenced by I2Cx_ReadMultiple(), and I2Cx_WriteMultiple().

static void I2Cx_Init

(

I2C_HandleTypeDef *

i2c_handler

)

[static]

Initializes I2C HAL.

Parameters:

i2c_handler

: I2C handler

Return values:

None

Definition at line 435 of file stm32f769i_discovery.c.

References DISCOVERY_AUDIO_I2Cx, DISCOVERY_EXT_I2Cx, hI2cAudioHandler, and I2Cx_MspInit().

Referenced by AUDIO_IO_Init(), EEPROM_IO_Init(), HDMI_IO_Init(), I2Cx_Error(), and TS_IO_Init().

static HAL_StatusTypeDef I2Cx_IsDeviceReady	(	I2C_HandleTypeDef *	i2c_handler,
		uint16_t	DevAddress,
		uint32_t	Trials
	)		[static]

Checks if target device is ready for communication.

Note:

This function is used with Memory devices

Parameters:

i2c_handler	: I2C handler
DevAddress,:	Target device address
Trials,:	Number of trials

Return values:

HAL

status

Definition at line 522 of file stm32f769i_discovery.c.

Referenced by EEPROM_IO_IsDeviceReady().

static void I2Cx_MspInit

(

I2C_HandleTypeDef *

i2c_handler

)

[static]

Initializes I2C MSP.

Parameters:

i2c_handler

: I2C handler

Return values:

None

Definition at line 350 of file stm32f769i_discovery.c.

References DISCOVERY_AUDIO_I2Cx_CLK_ENABLE, DISCOVERY_AUDIO_I2Cx_ER_IRQn, DISCOVERY_AUDIO_I2Cx_EV_IRQn, DISCOVERY_AUDIO_I2Cx_FORCE_RESET, DISCOVERY_AUDIO_I2Cx_RELEASE_RESET, DISCOVERY_AUDIO_I2Cx_SCL_AF, DISCOVERY_AUDIO_I2Cx_SCL_GPIO_CLK_ENABLE, DISCOVERY_AUDIO_I2Cx_SCL_GPIO_PORT, DISCOVERY_AUDIO_I2Cx_SCL_PIN, DISCOVERY_AUDIO_I2Cx_SDA_AF, DISCOVERY_AUDIO_I2Cx_SDA_GPIO_CLK_ENABLE, DISCOVERY_AUDIO_I2Cx_SDA_GPIO_PORT, DISCOVERY_AUDIO_I2Cx_SDA_PIN, DISCOVERY_EXT_I2Cx_CLK_ENABLE, DISCOVERY_EXT_I2Cx_ER_IRQn, DISCOVERY_EXT_I2Cx_EV_IRQn, DISCOVERY_EXT_I2Cx_FORCE_RESET, DISCOVERY_EXT_I2Cx_RELEASE_RESET, DISCOVERY_EXT_I2Cx_SCL_PIN, DISCOVERY_EXT_I2Cx_SCL_SDA_AF, DISCOVERY_EXT_I2Cx_SCL_SDA_GPIO_CLK_ENABLE, DISCOVERY_EXT_I2Cx_SCL_SDA_GPIO_PORT, DISCOVERY_EXT_I2Cx_SDA_PIN, and hI2cAudioHandler.

Referenced by I2Cx_Init().

static HAL_StatusTypeDef I2Cx_ReadMultiple	(	I2C_HandleTypeDef *	i2c_handler,
		uint8_t	Addr,
		uint16_t	Reg,
		uint16_t	MemAddress,
		uint8_t *	Buffer,
		uint16_t	Length
	)		[static]

Reads multiple data.

Parameters:

i2c_handler	: I2C handler
Addr,:	I2C address
Reg,:	Reg address
MemAddress,:	memory address
Buffer,:	Pointer to data buffer
Length,:	Length of the data

Return values:

HAL

status

Definition at line 473 of file stm32f769i_discovery.c.

References I2Cx_Error().

Referenced by AUDIO_IO_Read(), EEPROM_IO_ReadData(), HDMI_IO_Read(), TS_IO_Read(), and TS_IO_ReadMultiple().

static HAL_StatusTypeDef I2Cx_WriteMultiple	(	I2C_HandleTypeDef *	i2c_handler,
		uint8_t	Addr,
		uint16_t	Reg,
		uint16_t	MemAddress,
		uint8_t *	Buffer,
		uint16_t	Length
	)		[static]

Writes a value in a register of the device through BUS in using DMA mode.

Parameters:

i2c_handler	: I2C handler
Addr,:	Device address on BUS Bus.
Reg,:	The target register address to write
MemAddress,:	memory address
Buffer,:	The target register value to be written
Length,:	buffer size to be written

Return values:

HAL

status

Definition at line 499 of file stm32f769i_discovery.c.

References I2Cx_Error().

Referenced by AUDIO_IO_Write(), EEPROM_IO_WriteData(), HDMI_IO_Write(), TS_IO_Write(), and TS_IO_WriteMultiple().