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96 lines
1.7 KiB
96 lines
1.7 KiB
/** @file ir_uart.h
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@author Michael Hayes
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@date 10 December 2004
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@defgroup IR_uart Infrared uart driver
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Here's a simple application that transmits the ASCII code '?' repeatedly.
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@code
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#include "ir_uart.h"
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void main (void)
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{
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system_init ();
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ir_uart_init ();
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while (1)
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{
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ir_uart_putc ('?');
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}
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}
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@endcode
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Here's another simple application that receives data bytes.
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@code
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#include "ir_uart.h"
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void main (void)
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{
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system_init ();
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ir_uart_init ();
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while (1)
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{
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if (ir_uart_read_ready_p ())
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{
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char ch;
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ch = ir_uart_getc ();
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// Process the received byte.
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}
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}
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}
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@endcode
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*/
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#ifndef IR_UART_H
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#define IR_UART_H
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#include "system.h"
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#ifndef IR_UART_BAUD_RATE
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#define IR_UART_BAUD_RATE 2400
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#endif
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/* Return non-zero if there is a character ready to be read. */
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bool
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ir_uart_read_ready_p (void);
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/* Read character from IR_UART. This blocks if nothing
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is available to read. */
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int8_t
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ir_uart_getc (void);
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/* Return non-zero if a character can be written without blocking. */
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bool
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ir_uart_write_ready_p (void);
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/* Return non-zero if transmitter finished. */
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bool
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ir_uart_write_finished_p (void);
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/* Write character to IR_UART. This returns zero if
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the character could not be written. */
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int8_t
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ir_uart_putc (char ch);
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/* Write string to IR_UART. */
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void
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ir_uart_puts (const char *str);
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/* Initialise ir_uart and set baud rate. */
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uint8_t
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ir_uart_init (void);
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#endif
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