48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
#pragma once
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#include "../../../../util/queue.h"
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#include "../../../../smp/condiction.h"
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#include "stdbool.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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// Default buffer size for serial input
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#ifndef PIC_SERIAL_DEFAULT_BUFFERSIZE
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#define PIC_SERIAL_DEFAULT_BUFFERSIZE 16
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#endif
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// Serial port state.
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//
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// Line protocol defaults to 8N1 (8 bits, no parity, one stop bit)
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typedef struct {
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int port; // IO Port
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int irq; // IRQ, 0 for disable
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bool ok; // Is the port usable?
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queue_Queue buffer; // input byte buffer
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smp_Condition *cond; // input wait condiction
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} pic_serial_Port;
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extern pic_serial_Port pic_serial_COM1, pic_serial_COM2;
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// Init initializes a serial port. Returns true if success.
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//
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// TODO lineFlags is ignored by now, always 8N1
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bool pic_serial_Init(pic_serial_Port *port, int baudrate, int lineFlags);
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// InitInput initializes input for a serial port. Returns true if success.
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bool pic_serial_InitInput(pic_serial_Port *port);
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// Write writes a string to a serial port, if the port is usable.
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//
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// Writes n chars. If n is 0, writes until it reaches NUL.
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void pic_serial_Write(pic_serial_Port *port, const char *str, int n);
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#ifdef __cplusplus
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}
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#endif
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