Index - libavr

Index

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A
	API
	API Functions memmon.h std_tlv.h task_tlv.h
	API Functions-Helpers
	API Functions-Scheduler Operations
	API Variables task_sched.h task_tlv.h
	auto_watchdog.h
B
	BAUD_TO_UBRR
	BV
C
	Configuration Macros task_sched.h task_tlv.h tbouncer.h
	CYCLES_TO_MUSECS
D
	Data Types memmon.h task_tlv.h
	delay, sched_task
	delay_count, memmon_spec
	delay_div, memmon_spec
	dstadr, ttlv_s_inm_header
E
	Enumerations i2chelper.h mcp23018.h std_tlv.h task_tlv.h
F
	Function Definition Macros
	Functions i2chelper.h mcp23018.h mcp4x.h memmon.h spihelper.h std_tlv.h task_sched.h task_tlv.h tbouncer.h watchdog.h
G
	Global Variables
H
	h, sched_time
	handler, sched_task
	Helper Macros
I
	I2C Module State/Result Codes
	I2C_ACTIVE
	I2C_DISABLED
	I2C_E_ARB_LOST
	I2C_E_FSM
	I2C_E_LENGTH
	I2C_E_NOT_ACK
	I2C_E_STATE
	I2C_E_UNSPECIFIED
	I2C_IS_ACTIVE
	I2C_IS_READY
	I2C_READY
	i2c_request_state
	i2c_slave_addr
	i2c_state
	i2c_task_cats
	i2chelper.h
	i2chelper_mstr_init
	i2chelper_request
	i2chelper_shutdown
	index ttlv_msg_inm_reg ttlv_msg_inm_regpair ttlv_msg_reg ttlv_msg_regpair
L
	l, sched_time
	length, ttlv_s_header
	Logical Registers

When this header is included in a firmware code file, the watchdog timer will be automatically disabled (via WATCHDOG_DISABLE_ON_MCU_RESET) during firmware initialization, before main is called.

Converts a baud rate to an UBRR register value that can be passed to ttlv_init.

Utility macro that maps a bit number to an integer value with (only) the corresponding bit set to 1.

Converts a given number of CPU clock cycles to the duration in microseconds of that many clock cycles at the current clock frequency (given by the F_CPU macro).

sched_time delay

Execution delay of the task instance.

uint8_t delay_count

Used internally by the memory monitor task to keep track of the number of task executions since the lastest notification was sent.

uint8_t delay_div

Notification rate divisor to apply to the monitor.

uint8_t dstadr

INM address of the destination node.

uint16_t h

The bigtick count field.

sched_task_handler handler

Pointer to the task handler procedure.

NOTE: The error codes are those with names starting with “I2C_E_”.

module is currently performing an operation

module is disabled

lost I2C master arbitration

hardware generated unexpected status code

I2C length error (bytes to transmit and receive both zero)

received unexpected negative acknowledgement

attempted operation not allowed in current module state

unspecified error

Evaluates to a true value if and only if the I2C module is busy with an ongoing operation.

Evaluates to a true value if and only if the I2C module is initialized and ready to begin a new operation.

module is idle and ready to begin a new operation

extern volatile i2c_state i2c_request_state

Contains a state code representing the current state of the I2C module.

typedef uint8_t i2c_slave_addr

The type of I2C slave addresses.

typedef uint8_t i2c_state

The type of state and result codes for the I2C module.

extern volatile sched_catflags i2c_task_cats

Tasks in the categories indicated by this sched_catflags value will be notified by the I2C module’s ISR when a request operation finishes (either successfully or with an error).

Asynchronous, interrupt-driven I2C (aka TWI) helper module.

void i2chelper_mstr_init( uint8_t twbr,
sched_catflags task_cats )

Configures the I2C module for master mode (the only one currently implemented).

i2c_state i2chelper_request( i2c_slave_addr addr,
uint8_t n_out,
volatile const uint8_t * bfr_out,
uint8_t n_in,
volatile uint8_t * bfr_in )

Initiates an I2C request operation consisting of a transmit phase followed by a receive phase.

void i2chelper_shutdown( void )

Shuts down the I2C module.

ttlv_reg_index index

uint8_t l

The smalltick count field.

uint8_t length

TLV length field.