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circuits_uart

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Discover and use UARTs and serial ports in Elixir

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circuits_uart src erlcmd.h
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src/erlcmd.h 

// SPDX-FileCopyrightText: 2016 Frank Hunleth

//

// SPDX-License-Identifier: Apache-2.0

//

#ifndef ERLCMD_H

#define ERLCMD_H



#include <ei.h>



#ifdef __WIN32__

#include <windows.h>

#endif



/*

 * Erlang request/response processing

 */

#define ERLCMD_BUF_SIZE 32768 + 30 // Large size is to support large UART writes

struct erlcmd

{

    char buffer[ERLCMD_BUF_SIZE];

    size_t index;



    void (*request_handler)(const char *emsg, void *cookie);

    void *cookie;



#ifdef __WIN32__

    HANDLE h;

    OVERLAPPED overlapped;



    HANDLE stdin_reader_thread;

    HANDLE stdin_read_pipe;

    HANDLE stdin_write_pipe;

    BOOL running;

#endif

};



void erlcmd_init(struct erlcmd *handler,

		 void (*request_handler)(const char *req, void *cookie),

		 void *cookie);

void erlcmd_send(char *response, size_t len);

int erlcmd_process(struct erlcmd *handler);



#ifdef __WIN32__

HANDLE erlcmd_wfmo_event(struct erlcmd *handler);

#endif



#endif