STM32F4 DISCOVERY LOW LEVEL BUS Functions

Functions
static uint8_t	SPIx_WriteRead (uint8_t Byte)
	Sends a Byte through the SPI interface and return the Byte received from the SPI bus.
static void	I2Cx_WriteData (uint8_t Addr, uint8_t Reg, uint8_t Value)
	Write a value in a register of the device through BUS.
static uint8_t	I2Cx_ReadData (uint8_t Addr, uint8_t Reg)
	Read a register of the device through BUS.
static void	I2Cx_Error (uint8_t Addr)
	Manages error callback by re-initializing I2C.
void	ACCELERO_IO_ITConfig (void)
	Configures the Accelerometer INT2.
void	ACCELERO_IO_Write (uint8_t *pBuffer, uint8_t WriteAddr, uint16_t NumByteToWrite)
	Writes one byte to the Accelerometer.
void	ACCELERO_IO_Read (uint8_t *pBuffer, uint8_t ReadAddr, uint16_t NumByteToRead)
	Reads a block of data from the Accelerometer.
void	AUDIO_IO_Write (uint8_t Addr, uint8_t Reg, uint8_t Value)
	Writes a single data.
uint8_t	AUDIO_IO_Read (uint8_t Addr, uint8_t Reg)
	Reads a single data.

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Function Documentation

void ACCELERO_IO_ITConfig

(

void

)

Configures the Accelerometer INT2.

EXTI0 is already used by user button so INT1 is not configured here.

Definition at line 535 of file stm32f4_discovery.c.

References ACCELERO_INT2_EXTI_IRQn, ACCELERO_INT2_PIN, ACCELERO_INT_GPIO_CLK_ENABLE, and ACCELERO_INT_GPIO_PORT.

void ACCELERO_IO_Read	(	uint8_t *	pBuffer,
		uint8_t	ReadAddr,
		uint16_t	NumByteToRead
	)

Reads a block of data from the Accelerometer.

Parameters:

pBuffer,:	pointer to the buffer that receives the data read from the Accelerometer.
ReadAddr,:	Accelerometer's internal address to read from.
NumByteToRead,:	number of bytes to read from the Accelerometer.

Definition at line 594 of file stm32f4_discovery.c.

References ACCELERO_CS_HIGH, ACCELERO_CS_LOW, DUMMY_BYTE, MULTIPLEBYTE_CMD, READWRITE_CMD, and SPIx_WriteRead().

void ACCELERO_IO_Write	(	uint8_t *	pBuffer,
		uint8_t	WriteAddr,
		uint16_t	NumByteToWrite
	)

Writes one byte to the Accelerometer.

Parameters:

pBuffer,:	pointer to the buffer containing the data to be written to the Accelerometer.
WriteAddr,:	Accelerometer's internal address to write to.
NumByteToWrite,:	Number of bytes to write.

Definition at line 560 of file stm32f4_discovery.c.

References ACCELERO_CS_HIGH, ACCELERO_CS_LOW, MULTIPLEBYTE_CMD, and SPIx_WriteRead().

uint8_t AUDIO_IO_Read	(	uint8_t	Addr,
		uint8_t	Reg
	)

Reads a single data.

Parameters:

Addr,:	I2C address
Reg,:	Reg address

Return values:

Data	to be read

Definition at line 682 of file stm32f4_discovery.c.

References I2Cx_ReadData().

void AUDIO_IO_Write	(	uint8_t	Addr,
		uint8_t	Reg,
		uint8_t	Value
	)

Writes a single data.

Parameters:

Addr,:	I2C address
Reg,:	Reg address
Value,:	Data to be written

Definition at line 671 of file stm32f4_discovery.c.

References I2Cx_WriteData().

static void I2Cx_Error

(

uint8_t

Addr

)

[static]

Manages error callback by re-initializing I2C.

Parameters:

Addr,:

I2C Address

Definition at line 456 of file stm32f4_discovery.c.

References I2cHandle, and I2Cx_Init().

Referenced by I2Cx_ReadData(), and I2Cx_WriteData().

static uint8_t I2Cx_ReadData	(	uint8_t	Addr,
		uint8_t	Reg
	)		[static]

Read a register of the device through BUS.

Parameters:

Addr,:	Device address on BUS
Reg,:	The target register address to read

Return values:

HAL

status

Definition at line 436 of file stm32f4_discovery.c.

References I2cHandle, I2Cx_Error(), and I2cxTimeout.

Referenced by AUDIO_IO_Read().

static void I2Cx_WriteData	(	uint8_t	Addr,
		uint8_t	Reg,
		uint8_t	Value
	)		[static]

Write a value in a register of the device through BUS.

Parameters:

Addr,:	Device address on BUS Bus.
Reg,:	The target register address to write
Value,:	The target register value to be written

Return values:

HAL

status

Definition at line 416 of file stm32f4_discovery.c.

References I2cHandle, I2Cx_Error(), and I2cxTimeout.

Referenced by AUDIO_IO_Write().

static uint8_t SPIx_WriteRead

(

uint8_t

Byte

)

[static]

Sends a Byte through the SPI interface and return the Byte received from the SPI bus.

Parameters:

Byte,:

Byte send.

Return values:

The	received byte value

Definition at line 340 of file stm32f4_discovery.c.

References SpiHandle, SPIx_Error(), and SpixTimeout.

Referenced by ACCELERO_IO_Read(), and ACCELERO_IO_Write().