direct-ir.c File Reference

Functions

void dir_rx_c (void)

C core for the rx byte received interrupt.

void dir_rx_handler (void)

assembler wrapper for the rx byte received interrupt.

void dir_rxerror_c (void)

C core for the rx error interrupt.

void dir_rxerror_handler (void)

assembler wrapper for the rx error interrupt.

void dir_tx_handler (void)

assembler tx byte sent interrupt. More...

void dir_txend_handler (void)

assembler tx end interrupt. More...

void dir_init (void)

initialize IR port.

void dir_shutdown (void)

shutdown IR port.

size_t dir_write (void* const buf,size_t len)

write to IR port, blocking. More...

size_t dir_read (void* buf,size_t len)

read from IR port, blocking. More...

void dir_fflush (void)

flush input buffer.

Variables

unsigned char dir_rx_buf [RX_BUF_SIZE]

rx buffer.

unsigned char* dir_rx_end

rx buffer end (last+1).

unsigned char* volatile dir_rx_write

ptr to next byte to write in rx irq.

unsigned char* dir_rx_read

ptr to next byte to read.

volatile int dir_rx_state

rx error flag.

unsigned char* dir_tx_end

tx buffer end (last+1).

unsigned char* volatile dir_tx_read

ptr to next byte to be sent.

unsigned char* dir_tx_verify

ptr to compare sent bytes with received ones. More...

volatile int dir_tx_state

transmission state.

Function Documentation

void dir_tx_handler (void)

assembler tx byte sent interrupt.

write next byte if there's one left, otherwise unhook irq.

void dir_txend_handler (void)

assembler tx end interrupt.

shutdown transmission

size_t dir_write (void * const buf, size_t len)

write to IR port, blocking.

Parameters:: buf - data to transmit; len - number of bytes to transmit

Returns:: number of bytes written, -1 indicates error.

size_t dir_read (void * buf, size_t len)

read from IR port, blocking.

Parameters:: buf - allocated receive buffer; len - number of bytes to read

Returns:: number of bytes read, -1 indicates error.

Variable Documentation

unsigned char* dir_tx_verify

ptr to compare sent bytes with received ones.

null: don't compare.

direct-ir.c File Reference

Defines