helos1/driver/irq/pic/serial/serial.h

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#pragma once
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#include "../../../../util/queue.h"
#include "../../../../smp/condiction.h"
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#include "stdbool.h"
#ifdef __cplusplus
extern "C" {
#endif
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// Default buffer size for serial input
#ifndef PIC_SERIAL_DEFAULT_BUFFERSIZE
#define PIC_SERIAL_DEFAULT_BUFFERSIZE 128
#endif
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// Serial port state.
//
// Line protocol defaults to 8N1 (8 bits, no parity, one stop bit)
typedef struct {
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
smp_Condition *cond; // input wait condiction
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} pic_serial_Port;
extern pic_serial_Port pic_serial_COM1, pic_serial_COM2;
// Init initializes a serial port. Returns true if success.
//
// TODO lineFlags is ignored by now, always 8N1
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.
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.
//
// Writes n chars. If n is 0, writes until it reaches NUL.
void pic_serial_Write(pic_serial_Port *port, const char *str, int n);
#ifdef __cplusplus
}
#endif