Private Functions

Functions
static void	I2C1_Init (uint32_t user)
	Discovery I2C1 Bus initialization.
static void	I2C1_MspInit (I2C_HandleTypeDef *hi2c)
	Discovery I2C1 MSP Initialization.
void	I2C1_DeInit (uint32_t user)
	Discovery I2C1 Bus Deinitialization.
static void	I2C1_MspDeInit (I2C_HandleTypeDef *hi2c)
	Discovery I2C1 MSP DeInitialization.
static void	I2C1_WriteData (uint16_t Addr, uint16_t Reg, uint16_t RegSize, uint8_t Value)
	Write a value in a register of the device through BUS.
static HAL_StatusTypeDef	I2C1_WriteBuffer (uint16_t Addr, uint16_t Reg, uint16_t RegSize, uint8_t *pBuffer, uint16_t Length)
	Write a value in a register of the device through BUS.
static uint8_t	I2C1_ReadData (uint16_t Addr, uint16_t Reg, uint16_t RegSize)
	Read a register of the device through BUS.
static uint8_t	I2C1_isDeviceReady (uint16_t Addr, uint32_t Trials)
	Checks if target device is ready for communication.
static HAL_StatusTypeDef	I2C1_ReadBuffer (uint16_t Addr, uint16_t Reg, uint16_t RegSize, uint8_t *pBuffer, uint16_t Length)
	Reads multiple data on the BUS.
static void	I2C1_Error (void)
	Discovery I2C1 error treatment function.
static HAL_StatusTypeDef	I2C1_ReadMultiple (uint8_t Addr, uint16_t Reg, uint16_t MemAddress, uint8_t *Buffer, uint16_t Length)
	Reads multiple data.
static HAL_StatusTypeDef	I2C1_WriteMultiple (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.
void	MFX_IO_Init (void)
	Initializes MFX low level.
void	MFX_IO_DeInit (void)
	Deinitializes MFX low level.
void	MFX_IO_ITConfig (void)
	Configures MFX low level interrupt.
void	MFX_IO_EnableWakeupPin (void)
	Configures MFX wke up pin.
void	MFX_IO_Wakeup (void)
	Wakeup MFX.
void	MFX_IO_Write (uint16_t Addr, uint8_t Reg, uint8_t Value)
	MFX writes single data.
uint8_t	MFX_IO_Read (uint16_t Addr, uint8_t Reg)
	MFX reads single data.
uint16_t	MFX_IO_ReadMultiple (uint16_t Addr, uint8_t Reg, uint8_t *Buffer, uint16_t Length)
	MFX reads multiple data.
void	MFX_IO_WriteMultiple (uint16_t Addr, uint8_t Reg, uint8_t *Buffer, uint16_t Length)
	MFX writes multiple data.
void	MFX_IO_Delay (uint32_t Delay)
	MFX delay.
void	AUDIO_IO_Init (void)
	Initializes Audio low level.
void	AUDIO_IO_DeInit (void)
	Deinitializes Audio low level.
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	AUDIO_IO_Delay (uint32_t Delay)
	AUDIO Codec delay.
void	TS_IO_Init (void)
	Initializes Touchscreen low level.
void	TS_IO_Write (uint8_t Addr, uint8_t Reg, uint8_t Value)
	Writes a single data.
uint8_t	TS_IO_Read (uint8_t Addr, uint8_t Reg)
	Reads a single data.
uint16_t	TS_IO_ReadMultiple (uint8_t Addr, uint8_t Reg, uint8_t *Buffer, uint16_t Length)
	Reads multiple data with I2C communication channel from TouchScreen.
void	TS_IO_WriteMultiple (uint8_t Addr, uint8_t Reg, uint8_t *Buffer, uint16_t Length)
	Writes multiple data with I2C communication channel from MCU to TouchScreen.
void	TS_IO_Delay (uint32_t Delay)
	Delay function used in TouchScreen low level driver.
void	CAMERA_IO_Init (void)
	Initializes Camera low level.
void	CAMERA_IO_Write (uint8_t Addr, uint8_t Reg, uint8_t Value)
	Camera writes single data.
uint8_t	CAMERA_IO_Read (uint8_t Addr, uint8_t Reg)
	Camera reads single data.
void	CAMERA_Delay (uint32_t Delay)
	Camera delay.

---

Function Documentation

void AUDIO_IO_DeInit

(

void

)

Deinitializes Audio low level.

Return values:

None

Definition at line 1140 of file stm32l4r9i_discovery.c.

References AUDIO_I2C_ADDRESS, AUDIO_IO_Read(), AUDIO_IO_Write(), BSP_I2C_AUDIO_USER, CODEC_AUDIO_POWER_OFF, and I2C1_DeInit().

void AUDIO_IO_Delay

(

uint32_t

Delay

)

AUDIO Codec delay.

Parameters:

Delay,:

Delay in ms

Return values:

None

Definition at line 1202 of file stm32l4r9i_discovery.c.

void AUDIO_IO_Init

(

void

)

Initializes Audio low level.

Return values:

None

Definition at line 1101 of file stm32l4r9i_discovery.c.

References AUDIO_I2C_ADDRESS, AUDIO_IO_Read(), AUDIO_IO_Write(), AUDIO_RESET_PIN, BSP_I2C_AUDIO_USER, BSP_IO_ConfigPin(), BSP_IO_Init(), CODEC_AUDIO_POWER_OFF, CODEC_AUDIO_POWER_ON, and I2C1_Init().

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 1188 of file stm32l4r9i_discovery.c.

References I2C1_ReadBuffer().

Referenced by AUDIO_IO_DeInit(), and AUDIO_IO_Init().

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

Return values:

None

Definition at line 1177 of file stm32l4r9i_discovery.c.

References I2C1_WriteBuffer().

Referenced by AUDIO_IO_DeInit(), and AUDIO_IO_Init().

void CAMERA_Delay

(

uint32_t

Delay

)

Camera delay.

Parameters:

Delay,:

Delay in ms

Return values:

None

Definition at line 1325 of file stm32l4r9i_discovery.c.

void CAMERA_IO_Init

(

void

)

Initializes Camera low level.

Return values:

None

Definition at line 1288 of file stm32l4r9i_discovery.c.

References BSP_I2C_CAMERA_USER, and I2C1_Init().

uint8_t CAMERA_IO_Read	(	uint8_t	Addr,
		uint8_t	Reg
	)

Camera reads single data.

Parameters:

Addr,:	I2C address
Reg,:	Register address

Return values:

Read

data

Definition at line 1311 of file stm32l4r9i_discovery.c.

References I2C1_ReadMultiple().

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

Camera writes single data.

Parameters:

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

Return values:

None

Definition at line 1300 of file stm32l4r9i_discovery.c.

References I2C1_WriteMultiple().

void I2C1_DeInit

(

uint32_t

user

)

Discovery I2C1 Bus Deinitialization.

Return values:

None

Definition at line 613 of file stm32l4r9i_discovery.c.

References BSP_I2C_NO_USER, I2C1_MspDeInit(), I2c1Handle, and v_bspI2cUsers.

Referenced by AUDIO_IO_DeInit(), I2C1_Error(), and MFX_IO_DeInit().

static void I2C1_Error

(

void

)

[static]

Discovery I2C1 error treatment function.

Return values:

None

Definition at line 839 of file stm32l4r9i_discovery.c.

References BSP_ErrorHandler(), BSP_I2C_ALL_USERS, I2C1_DeInit(), I2C1_Init(), and v_bspI2cUsers.

Referenced by I2C1_isDeviceReady(), I2C1_ReadBuffer(), I2C1_ReadData(), I2C1_ReadMultiple(), I2C1_WriteBuffer(), I2C1_WriteData(), and I2C1_WriteMultiple().

static void I2C1_Init

(

uint32_t

user

)

[static]

Discovery I2C1 Bus initialization.

Return values:

None

Definition at line 529 of file stm32l4r9i_discovery.c.

References I2C1_MspInit(), I2c1Handle, and v_bspI2cUsers.

Referenced by AUDIO_IO_Init(), CAMERA_IO_Init(), I2C1_Error(), MFX_IO_Init(), and TS_IO_Init().

static uint8_t I2C1_isDeviceReady	(	uint16_t	Addr,
		uint32_t	Trials
	)		[static]

Checks if target device is ready for communication.

Note:

This function is used with Memory devices

Parameters:

Addr,:	Target device address
Trials,:	Number of trials

Return values:

HAL

status

Definition at line 774 of file stm32l4r9i_discovery.c.

References I2C1_Error(), and I2c1Handle.

Referenced by MFX_IO_Init().

static void I2C1_MspDeInit

(

I2C_HandleTypeDef *

hi2c

)

[static]

Discovery I2C1 MSP DeInitialization.

Parameters:

hi2c,:

I2C1 handle

Return values:

None

Definition at line 636 of file stm32l4r9i_discovery.c.

Referenced by I2C1_DeInit().

static void I2C1_MspInit

(

I2C_HandleTypeDef *

hi2c

)

[static]

Discovery I2C1 MSP Initialization.

Parameters:

hi2c,:

I2C1 handle

Return values:

None

Definition at line 561 of file stm32l4r9i_discovery.c.

Referenced by I2C1_Init().

static HAL_StatusTypeDef I2C1_ReadBuffer	(	uint16_t	Addr,
		uint16_t	Reg,
		uint16_t	RegSize,
		uint8_t *	pBuffer,
		uint16_t	Length
	)		[static]

Reads multiple data on the BUS.

Parameters:

Addr,:	I2C Address
Reg,:	Reg Address
RegSize	: The target register size (can be 8BIT or 16BIT)
pBuffer,:	pointer to read data buffer
Length,:	length of the data

Return values:

0	if no problems to read multiple data

Definition at line 809 of file stm32l4r9i_discovery.c.

References I2C1_Error(), I2c1Handle, and I2c1Timeout.

Referenced by AUDIO_IO_Read(), and MFX_IO_ReadMultiple().

static uint8_t I2C1_ReadData	(	uint16_t	Addr,
		uint16_t	Reg,
		uint16_t	RegSize
	)		[static]

Read a register of the device through BUS.

Parameters:

Addr,:	Device address on BUS
Reg,:	The target register address to read
RegSize,:	The target register size (can be 8BIT or 16BIT)

Return values:

read	register value

Definition at line 740 of file stm32l4r9i_discovery.c.

References I2C1_Error(), I2c1Handle, and I2c1Timeout.

Referenced by MFX_IO_Read(), and TS_IO_Read().

static HAL_StatusTypeDef I2C1_ReadMultiple	(	uint8_t	Addr,
		uint16_t	Reg,
		uint16_t	MemAddress,
		uint8_t *	Buffer,
		uint16_t	Length
	)		[static]

Reads multiple data.

Parameters:

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 862 of file stm32l4r9i_discovery.c.

References I2C1_Error(), I2c1Handle, and I2c1Timeout.

Referenced by CAMERA_IO_Read(), and TS_IO_ReadMultiple().

static HAL_StatusTypeDef I2C1_WriteBuffer	(	uint16_t	Addr,
		uint16_t	Reg,
		uint16_t	RegSize,
		uint8_t *	pBuffer,
		uint16_t	Length
	)		[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
RegSize,:	The target register size (can be 8BIT or 16BIT)
pBuffer,:	The target register value to be written
Length,:	buffer size to be written

Return values:

None

Definition at line 707 of file stm32l4r9i_discovery.c.

References I2C1_Error(), I2c1Handle, and I2c1Timeout.

Referenced by AUDIO_IO_Write(), and MFX_IO_WriteMultiple().

static void I2C1_WriteData	(	uint16_t	Addr,
		uint16_t	Reg,
		uint16_t	RegSize,
		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
RegSize,:	The target register size (can be 8BIT or 16BIT)
Value,:	The target register value to be written

Return values:

None

Definition at line 674 of file stm32l4r9i_discovery.c.

References I2C1_Error(), I2c1Handle, and I2c1Timeout.

Referenced by MFX_IO_Write().

static HAL_StatusTypeDef I2C1_WriteMultiple	(	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.

Parameters:

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 900 of file stm32l4r9i_discovery.c.

References I2C1_Error(), I2c1Handle, and I2c1Timeout.

Referenced by CAMERA_IO_Write(), TS_IO_Write(), and TS_IO_WriteMultiple().

void MFX_IO_DeInit

(

void

)

Deinitializes MFX low level.

Return values:

None

Definition at line 955 of file stm32l4r9i_discovery.c.

References BSP_I2C_MFX_USER, I2C1_DeInit(), MFX_INT_EXTI_IRQn, MFX_INT_GPIO_CLK_ENABLE, MFX_INT_GPIO_PORT, MFX_INT_PIN, MFX_WAKEUP_GPIO_CLK_ENABLE, MFX_WAKEUP_GPIO_PORT, and MFX_WAKEUP_PIN.

void MFX_IO_Delay

(

uint32_t

Delay

)

MFX delay.

Parameters:

Delay,:

Delay in ms

Return values:

None

Definition at line 1090 of file stm32l4r9i_discovery.c.

void MFX_IO_EnableWakeupPin

(

void

)

Configures MFX wke up pin.

Return values:

None

Definition at line 1005 of file stm32l4r9i_discovery.c.

References MFX_WAKEUP_GPIO_CLK_ENABLE, MFX_WAKEUP_GPIO_PORT, and MFX_WAKEUP_PIN.

void MFX_IO_Init

(

void

)

Initializes MFX low level.

Return values:

None

Definition at line 940 of file stm32l4r9i_discovery.c.

References BSP_ErrorHandler(), BSP_I2C_MFX_USER, I2C1_Init(), I2C1_isDeviceReady(), and IO_I2C_ADDRESS.

void MFX_IO_ITConfig

(

void

)

Configures MFX low level interrupt.

Return values:

None

Definition at line 982 of file stm32l4r9i_discovery.c.

References MFX_INT_EXTI_IRQn, MFX_INT_GPIO_CLK_ENABLE, MFX_INT_GPIO_PORT, and MFX_INT_PIN.

Referenced by BSP_JOY_Init(), and BSP_TS_ITConfig().

uint8_t MFX_IO_Read	(	uint16_t	Addr,
		uint8_t	Reg
	)

MFX reads single data.

Parameters:

Addr,:	I2C address
Reg,:	Register address

Return values:

Read

data

Definition at line 1054 of file stm32l4r9i_discovery.c.

References I2C1_ReadData().

uint16_t MFX_IO_ReadMultiple	(	uint16_t	Addr,
		uint8_t	Reg,
		uint8_t *	Buffer,
		uint16_t	Length
	)

MFX reads multiple data.

Parameters:

Addr,:	I2C address
Reg,:	Register address
Buffer,:	Pointer to data buffer
Length,:	Length of the data

Return values:

Number

of read data

Definition at line 1067 of file stm32l4r9i_discovery.c.

References I2C1_ReadBuffer().

void MFX_IO_Wakeup

(

void

)

Wakeup MFX.

Return values:

None

Definition at line 1024 of file stm32l4r9i_discovery.c.

References MFX_WAKEUP_GPIO_PORT, and MFX_WAKEUP_PIN.

void MFX_IO_Write	(	uint16_t	Addr,
		uint8_t	Reg,
		uint8_t	Value
	)

MFX writes single data.

Parameters:

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

Return values:

None

Definition at line 1043 of file stm32l4r9i_discovery.c.

References I2C1_WriteData().

Referenced by BSP_CAMERA_Init().

void MFX_IO_WriteMultiple	(	uint16_t	Addr,
		uint8_t	Reg,
		uint8_t *	Buffer,
		uint16_t	Length
	)

MFX writes multiple data.

Parameters:

Addr,:	I2C address
Reg,:	Register address
Buffer,:	Pointer to data buffer
Length,:	Length of the data

Return values:

None

Definition at line 1080 of file stm32l4r9i_discovery.c.

References I2C1_WriteBuffer().

void TS_IO_Delay

(

uint32_t

Delay

)

Delay function used in TouchScreen low level driver.

Parameters:

Delay,:

Delay in ms

Return values:

None

Definition at line 1277 of file stm32l4r9i_discovery.c.

void TS_IO_Init

(

void

)

Initializes Touchscreen low level.

Return values:

None

Definition at line 1216 of file stm32l4r9i_discovery.c.

References BSP_I2C_TS_USER, and I2C1_Init().

uint8_t TS_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 1239 of file stm32l4r9i_discovery.c.

References I2C1_ReadData().

Referenced by BSP_TS_Init().

uint16_t TS_IO_ReadMultiple	(	uint8_t	Addr,
		uint8_t	Reg,
		uint8_t *	Buffer,
		uint16_t	Length
	)

Reads multiple data with I2C communication channel from TouchScreen.

Parameters:

Addr,:	I2C address
Reg,:	Register address
Buffer,:	Pointer to data buffer
Length,:	Length of the data

Return values:

Number

of read data

Definition at line 1253 of file stm32l4r9i_discovery.c.

References I2C1_ReadMultiple().

void TS_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

Return values:

None

Definition at line 1228 of file stm32l4r9i_discovery.c.

References I2C1_WriteMultiple().

void TS_IO_WriteMultiple	(	uint8_t	Addr,
		uint8_t	Reg,
		uint8_t *	Buffer,
		uint16_t	Length
	)

Writes multiple data with I2C communication channel from MCU to TouchScreen.

Parameters:

Addr,:	I2C address
Reg,:	Register address
Buffer,:	Pointer to data buffer
Length,:	Length of the data

Return values:

None

Definition at line 1267 of file stm32l4r9i_discovery.c.

References I2C1_WriteMultiple().