I2C Peripheral

I2C peripheral interface. More...

Collaboration diagram for I2C Peripheral:

Data Structures
struct	i2c_transfer_info_t
	Synchronization state between I2C ISR and read/write functions. More...

Enumerations
enum	{ kI2CGlitchFilterWidth_ns = 50 }
	Default width of glitches to filter in nanoseconds. More...
enum	{ kI2CGlitchFilterMaxCycles = 31 }

Functions
static bool	i2c_poll_for_activity (const peripheral_descriptor_t *self)
	I2C slave poll for activity function.
static status_t	i2c_full_init (const peripheral_descriptor_t *self, serial_byte_receive_func_t function)
	I2C slave init function.
static void	i2c_full_shutdown (const peripheral_descriptor_t *self)
	I2C slave shutdown function.
static void	i2c_peripheral_init (uint32_t instance)
	I2C slave internal init function.
status_t	i2c_write (const peripheral_descriptor_t *self, const uint8_t *buffer, uint32_t byteCount)
	I2C slave writing data function.
static void	i2c_initial_data_sink (uint8_t sink_byte, uint32_t instance)
static void	i2c_data_sink (uint8_t sink_byte, uint32_t instance)
static void	i2c_data_source (uint8_t *source_byte)
static void	i2c_set_glitch_filter_width (I2C_Type *base, uint32_t busClock_Hz, uint32_t glitchWidth_ns)
static void	i2c_SlaveIRQHandler (uint32_t instance)
void	I2C0_IRQHandler (void)
	Implementation of I2C0 handler named in startup code. More...
void	I2C1_IRQHandler (void)
	Implementation of I2C1 handler named in startup code. More...
static uint8_t	i2c_DummyRead (volatile I2C_Type *base)

Variables
const peripheral_control_interface_t	g_i2cControlInterface
	I2C slave control interface information. More...
const peripheral_byte_inteface_t	g_i2cByteInterface = {.init = NULL, .write = i2c_write }
	I2C slave byte interface information. More...
static i2c_transfer_info_t	s_i2cInfo
	Global state for the I2C slave peripheral interface. More...
static bool	s_i2cActivity [FSL_FEATURE_SOC_I2C_COUNT] = { false }
	Global state for the I2C slave peripheral interface.
static const uint32_t	g_i2cBaseAddr [] = I2C_BASE_ADDRS
static bool	s_i2cIntialized [FSL_FEATURE_SOC_I2C_COUNT] = { false }
static serial_byte_receive_func_t	s_i2c_app_data_sink_callback
	I2C slave receiving data call back function.

Usage Information

I2C peripheral interface.

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Data Structure Documentation

struct i2c_transfer_info_t

Synchronization state between I2C ISR and read/write functions.

Data Fields
const uint8_t *	writeData
	The applications data to write.
volatile uint32_t	bytesToTransfer
	The total number of bytes to be transmitted.
void(*	data_source )(uint8_t *source_byte)
void(*	data_sink )(uint8_t sink_byte, uint32_t instance)

Enumeration Type Documentation

anonymous enum

Default width of glitches to filter in nanoseconds.

Enumerator
kI2CGlitchFilterWidth_ns	Width of glitches to filter in nanoseconds.

anonymous enum

Enumerator
kI2CGlitchFilterMaxCycles	Max cycles supported to set glitch filter.

Function Documentation

void I2C0_IRQHandler

(

void

)

Implementation of I2C0 handler named in startup code.

Passes instance to generic I2C IRQ handler.

void I2C1_IRQHandler

(

void

)

Implementation of I2C1 handler named in startup code.

Passes instance to generic I2C IRQ handler.

Variable Documentation

const peripheral_byte_inteface_t g_i2cByteInterface = {.init = NULL, .write = i2c_write }

I2C slave byte interface information.

Byte I/O interface for the I2C peripheral driver.

const peripheral_control_interface_t g_i2cControlInterface

Initial value:

= {
    .pollForActivity = i2c_poll_for_activity, .init = i2c_full_init, .shutdown = i2c_full_shutdown, .pump = 0
}

I2C slave control interface information.

Control interface for the I2C peripheral driver.

i2c_transfer_info_t s_i2cInfo

static

Initial value:

= {
    .writeData = 0, .bytesToTransfer = 0, .data_source = i2c_data_source, .data_sink = i2c_initial_data_sink
}

Global state for the I2C slave peripheral interface.