slipdev.h

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/*
 * SPDX-FileCopyrightText: 2015-2017 Freie Universität Berlin
 * SPDX-License-Identifier: LGPL-2.1-only
 */
 
#pragma once



 
#include <stdint.h>
 
#include "cib.h"
#include "event.h"
#include "net/netdev.h"
#include "periph/uart.h"
#include "chunked_ringbuffer.h"
#include "sched.h"
 
#ifdef __cplusplus
extern "C" {
#endif

#ifdef CONFIG_SLIPDEV_BUFSIZE_EXP
#define CONFIG_SLIPDEV_BUFSIZE (1 << CONFIG_SLIPDEV_BUFSIZE_EXP)
#endif
 
#ifndef CONFIG_SLIPDEV_BUFSIZE
#define CONFIG_SLIPDEV_BUFSIZE (2048U)
#endif

typedef enum {
    SLIPDEV_STATE_NONE = 0,
    SLIPDEV_STATE_UNKNOWN,
    SLIPDEV_STATE_NET,
    SLIPDEV_STATE_NET_ESC,
    SLIPDEV_STATE_STDIN,
    SLIPDEV_STATE_STDIN_ESC,
    SLIPDEV_STATE_CONFIG,
    SLIPDEV_STATE_CONFIG_ESC,
    SLIPDEV_STATE_STANDBY,
    SLIPDEV_STATE_SLEEP,
} slipdev_state_t;

typedef struct {
    uart_t uart;        
    uint32_t baudrate;  
} slipdev_params_t;

typedef struct {
#if IS_USED(MODULE_SLIPDEV_NET)
    netdev_t netdev;                        
    chunk_ringbuf_t rb;                     
                                            /* Written to from interrupts (with irq_disable */
                                            /* to prevent any simultaneous writes),         */
                                            /* consumed exclusively in the network stack's  */
                                            /* loop at _isr.                                */
 
    uint8_t rxmem[CONFIG_SLIPDEV_BUFSIZE];  
#endif
 
#if IS_USED(MODULE_SLIPDEV_CONFIG)
    chunk_ringbuf_t rb_config;                      
    uint8_t rxmem_config[CONFIG_SLIPDEV_BUFSIZE];   
    event_t rxevent;                                
#endif
 
    slipdev_params_t config;                
    slipdev_state_t state;
} slipdev_t;

void slipdev_setup(slipdev_t *dev, const slipdev_params_t *params, uint8_t index);

void slipdev_coap_set_event_queue(event_queue_t *q);

void slipdev_coap_unset_event_queue(void);

void unicoap_slipdev_recv_handler(event_t * event);
 

int slipdev_coap_recv(uint8_t *buf, size_t buf_size, slipdev_t *dev);

void slipdev_coap_send(const iolist_t *iolist,  const slipdev_t *dev);
 
#ifdef __cplusplus
}
#endif