STM32F401 DISCOVERY LOW LEVEL Private Functions

Functions
uint32_t	BSP_GetVersion (void)
	This method returns the STM32F401 DISCO BSP Driver revision.
void	BSP_LED_Init (Led_TypeDef Led)
	Configures LED GPIO.
void	BSP_LED_On (Led_TypeDef Led)
	Turns selected LED On.
void	BSP_LED_Off (Led_TypeDef Led)
	Turns selected LED Off.
void	BSP_LED_Toggle (Led_TypeDef Led)
	Toggles the selected LED.
void	BSP_PB_Init (Button_TypeDef Button, ButtonMode_TypeDef ButtonMode)
	Configures Button GPIO and EXTI Line.
uint32_t	BSP_PB_GetState (Button_TypeDef Button)
	Returns the selected Button state.
static void	I2Cx_WriteData (uint16_t Addr, uint8_t Reg, uint8_t Value)
	Writes a value in a register of the device through BUS.
static uint8_t	I2Cx_ReadData (uint16_t Addr, uint8_t Reg)
	Reads a register of the device through BUS.
static void	I2Cx_MspInit (I2C_HandleTypeDef *hi2c)
	I2Cx MSP Init.
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	SPIx_MspInit (SPI_HandleTypeDef *hspi)
	SPI MSP Init.
void	GYRO_IO_Write (uint8_t *pBuffer, uint8_t WriteAddr, uint16_t NumByteToWrite)
	Writes one byte to the GYRO.
void	GYRO_IO_Read (uint8_t *pBuffer, uint8_t ReadAddr, uint16_t NumByteToRead)
	Reads a block of data from the GYRO.
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.
void	COMPASSACCELERO_IO_Write (uint16_t DeviceAddr, uint8_t RegisterAddr, uint8_t Value)
	Writes one byte to the COMPASS / ACCELERO.
uint8_t	COMPASSACCELERO_IO_Read (uint16_t DeviceAddr, uint8_t RegisterAddr)
	Reads a block of data from the COMPASS / ACCELERO.

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Function Documentation

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 659 of file stm32f401_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 648 of file stm32f401_discovery.c.

References I2Cx_WriteData().

uint32_t BSP_GetVersion

(

void

)

This method returns the STM32F401 DISCO BSP Driver revision.

Return values:

version,:

0xXYZR (8bits for each decimal, R for RC)

Definition at line 159 of file stm32f401_discovery.c.

References __STM32F401_DISCO_BSP_VERSION.

void BSP_LED_Init

(

Led_TypeDef

Led

)

Configures LED GPIO.

Parameters:

Led,:

Specifies the Led to be configured. This parameter can be one of following parameters: LED4 LED3 LED5 LED6

Definition at line 173 of file stm32f401_discovery.c.

References GPIO_PIN, GPIO_PORT, and LEDx_GPIO_CLK_ENABLE.

void BSP_LED_Off

(

Led_TypeDef

Led

)

Turns selected LED Off.

Parameters:

Led,:

Specifies the Led to be set off. This parameter can be one of following parameters: LED4 LED3 LED5 LED6

Definition at line 214 of file stm32f401_discovery.c.

References GPIO_PIN, and GPIO_PORT.

void BSP_LED_On

(

Led_TypeDef

Led

)

Turns selected LED On.

Parameters:

Led,:

Specifies the Led to be set on. This parameter can be one of following parameters: LED4 LED3 LED5 LED6

Definition at line 200 of file stm32f401_discovery.c.

References GPIO_PIN, and GPIO_PORT.

void BSP_LED_Toggle

(

Led_TypeDef

Led

)

Toggles the selected LED.

Parameters:

Led,:

Specifies the Led to be toggled. This parameter can be one of following parameters: LED4 LED3 LED5 LED6

Definition at line 228 of file stm32f401_discovery.c.

References GPIO_PIN, and GPIO_PORT.

uint32_t BSP_PB_GetState

(

Button_TypeDef

Button

)

Returns the selected Button state.

Parameters:

Button,:

Specifies the Button to be checked. This parameter should be: BUTTON_KEY

Return values:

The	Button GPIO pin value.

Definition at line 280 of file stm32f401_discovery.c.

References BUTTON_PIN, and BUTTON_PORT.

void BSP_PB_Init	(	Button_TypeDef	Button,
		ButtonMode_TypeDef	ButtonMode
	)

Configures Button GPIO and EXTI Line.

Parameters:

Button,:	Specifies the Button to be configured. This parameter should be: BUTTON_KEY
ButtonMode,:	Specifies Button mode. This parameter can be one of following parameters: BUTTON_MODE_GPIO: Button will be used as simple IO BUTTON_MODE_EXTI: Button will be connected to EXTI line with interrupt generation capability

Definition at line 243 of file stm32f401_discovery.c.

References BUTTON_IRQn, BUTTON_MODE_EXTI, BUTTON_MODE_GPIO, BUTTON_PIN, BUTTON_PORT, and BUTTONx_GPIO_CLK_ENABLE.

uint8_t COMPASSACCELERO_IO_Read	(	uint16_t	DeviceAddr,
		uint8_t	RegisterAddr
	)

Reads a block of data from the COMPASS / ACCELERO.

Parameters:

DeviceAddr,:	the slave address to be programmed(ACC_I2C_ADDRESS or MAG_I2C_ADDRESS).
RegisterAddr,:	the COMPASS / ACCELERO internal address register to read from

Return values:

COMPASS

/ ACCELERO register value

Definition at line 726 of file stm32f401_discovery.c.

References I2Cx_ReadData().

void COMPASSACCELERO_IO_Write	(	uint16_t	DeviceAddr,
		uint8_t	RegisterAddr,
		uint8_t	Value
	)

Writes one byte to the COMPASS / ACCELERO.

Parameters:

DeviceAddr,:	the slave address to be programmed
RegisterAddr,:	the COMPASS / ACCELERO register to be written
Value,:	Data to be written

Definition at line 714 of file stm32f401_discovery.c.

References I2Cx_WriteData().

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

Reads a block of data from the GYRO.

Parameters:

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

Definition at line 570 of file stm32f401_discovery.c.

References DUMMY_BYTE, GYRO_CS_HIGH, GYRO_CS_LOW, MULTIPLEBYTE_CMD, READWRITE_CMD, and SPIx_WriteRead().

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

Writes one byte to the GYRO.

Parameters:

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

Definition at line 536 of file stm32f401_discovery.c.

References GYRO_CS_HIGH, GYRO_CS_LOW, MULTIPLEBYTE_CMD, and SPIx_WriteRead().

static void I2Cx_MspInit

(

I2C_HandleTypeDef *

hi2c

)

[static]

I2Cx MSP Init.

Parameters:

hi2c,:

I2C handle

Definition at line 372 of file stm32f401_discovery.c.

References DISCOVERY_I2Cx_AF, DISCOVERY_I2Cx_CLOCK_ENABLE, DISCOVERY_I2Cx_ER_IRQn, DISCOVERY_I2Cx_EV_IRQn, DISCOVERY_I2Cx_FORCE_RESET, DISCOVERY_I2Cx_GPIO_CLK_ENABLE, DISCOVERY_I2Cx_GPIO_PORT, DISCOVERY_I2Cx_RELEASE_RESET, DISCOVERY_I2Cx_SCL_PIN, and DISCOVERY_I2Cx_SDA_PIN.

Referenced by I2Cx_Init().

static uint8_t I2Cx_ReadData	(	uint16_t	Addr,
		uint8_t	Reg
	)		[static]

Reads a register of the device through BUS.

Parameters:

Addr,:	Device address on BUS Bus.
Reg,:	The target register address to write

Return values:

Data	read at register address

Definition at line 340 of file stm32f401_discovery.c.

References I2cHandle, I2Cx_Error(), and I2cxTimeout.

Referenced by AUDIO_IO_Read(), and COMPASSACCELERO_IO_Read().

static void I2Cx_WriteData	(	uint16_t	Addr,
		uint8_t	Reg,
		uint8_t	Value
	)		[static]

Writes 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

Definition at line 320 of file stm32f401_discovery.c.

References I2cHandle, I2Cx_Error(), and I2cxTimeout.

Referenced by AUDIO_IO_Write(), and COMPASSACCELERO_IO_Write().

static void SPIx_MspInit

(

SPI_HandleTypeDef *

hspi

)

[static]

SPI MSP Init.

Parameters:

hspi,:

SPI handle

Definition at line 476 of file stm32f401_discovery.c.

References DISCOVERY_SPIx_AF, DISCOVERY_SPIx_CLOCK_ENABLE, DISCOVERY_SPIx_GPIO_CLK_ENABLE, DISCOVERY_SPIx_GPIO_PORT, DISCOVERY_SPIx_MISO_PIN, DISCOVERY_SPIx_MOSI_PIN, and DISCOVERY_SPIx_SCK_PIN.

Referenced by SPIx_Init().

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 446 of file stm32f401_discovery.c.

References SpiHandle, SPIx_Error(), and SpixTimeout.

Referenced by GYRO_IO_Read(), and GYRO_IO_Write().