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Initial KISS support

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This commit is contained in:
Mark Qvist 2014-11-10 00:02:19 +01:00
parent 9addf50a33
commit 6e3d8d9987
18 changed files with 1521 additions and 164 deletions
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99
bertos/net/ax25.c
View file

@ -70,51 +70,56 @@
static void ax25_decode(AX25Ctx *ctx)
{
AX25Msg msg;
uint8_t *buf = ctx->buf;
DECODE_CALL(buf, msg.dst.call);
msg.dst.ssid = (*buf++ >> 1) & 0x0F;
DECODE_CALL(buf, msg.src.call);
msg.src.ssid = (*buf >> 1) & 0x0F;
/* Repeater addresses */
#if CONFIG_AX25_RPT_LST
for (msg.rpt_cnt = 0; !(*buf++ & 0x01) && (msg.rpt_cnt < countof(msg.rpt_lst)); msg.rpt_cnt++)
{
DECODE_CALL(buf, msg.rpt_lst[msg.rpt_cnt].call);
msg.rpt_lst[msg.rpt_cnt].ssid = (*buf >> 1) & 0x0F;
AX25_SET_REPEATED(&msg, msg.rpt_cnt, (*buf & 0x80));
}
#if SERIAL_PROTOCOL == PROTOCOL_KISS
if (ctx->hook)
ctx->hook(ctx);
#else
while (!(*buf++ & 0x01))
AX25Msg msg;
uint8_t *buf = ctx->buf;
DECODE_CALL(buf, msg.dst.call);
msg.dst.ssid = (*buf++ >> 1) & 0x0F;
DECODE_CALL(buf, msg.src.call);
msg.src.ssid = (*buf >> 1) & 0x0F;
/* Repeater addresses */
#if CONFIG_AX25_RPT_LST
for (msg.rpt_cnt = 0; !(*buf++ & 0x01) && (msg.rpt_cnt < countof(msg.rpt_lst)); msg.rpt_cnt++)
{
DECODE_CALL(buf, msg.rpt_lst[msg.rpt_cnt].call);
msg.rpt_lst[msg.rpt_cnt].ssid = (*buf >> 1) & 0x0F;
AX25_SET_REPEATED(&msg, msg.rpt_cnt, (*buf & 0x80));
}
#else
while (!(*buf++ & 0x01))
{
char rpt[6];
uint8_t ssid;
DECODE_CALL(buf, rpt);
ssid = (*buf >> 1) & 0x0F;
}
#endif
msg.ctrl = *buf++;
if (msg.ctrl != AX25_CTRL_UI)
{
char rpt[6];
uint8_t ssid;
DECODE_CALL(buf, rpt);
ssid = (*buf >> 1) & 0x0F;
return;
}
msg.pid = *buf++;
if (msg.pid != AX25_PID_NOLAYER3)
{
return;
}
msg.len = ctx->frm_len - 2 - (buf - ctx->buf);
msg.info = buf;
if (ctx->hook)
ctx->hook(&msg);
#endif
msg.ctrl = *buf++;
if (msg.ctrl != AX25_CTRL_UI)
{
return;
}
msg.pid = *buf++;
if (msg.pid != AX25_PID_NOLAYER3)
{
return;
}
msg.len = ctx->frm_len - 2 - (buf - ctx->buf);
msg.info = buf;
if (ctx->hook)
ctx->hook(&msg);
}
@ -258,6 +263,20 @@ void ax25_sendVia(AX25Ctx *ctx, const AX25Call *path, size_t path_len, const voi
kfile_putc(HDLC_FLAG, ctx->ch);
}
void ax25_sendRaw(AX25Ctx *ctx, void *_buf, size_t len) {
ctx->crc_out = CRC_CCITT_INIT_VAL;
kfile_putc(HDLC_FLAG, ctx->ch);
const uint8_t *buf = (const uint8_t *)_buf;
while (len--) ax25_putchar(ctx, *buf++);
uint8_t crcl = (ctx->crc_out & 0xff) ^ 0xff;
uint8_t crch = (ctx->crc_out >> 8) ^ 0xff;
ax25_putchar(ctx, crcl);
ax25_putchar(ctx, crch);
kfile_putc(HDLC_FLAG, ctx->ch);
}
/**
* Init the AX25 protocol decoder.
*

11
bertos/net/ax25.h
View file

@ -45,6 +45,7 @@
#ifndef NET_AX25_H
#define NET_AX25_H
#include "config.h" // Various configuration values
#include "cfg/cfg_ax25.h"
#include <cfg/compiler.h>
@ -62,11 +63,18 @@
#define AX25_CRC_CORRECT 0xF0B8
struct AX25Msg; // fwd declaration
struct AX25Ctx; // fwd declaration
/**
* Type for AX25 messages callback.
*/
typedef void (*ax25_callback_t)(struct AX25Msg *msg);
#if SERIAL_PROTOCOL == PROTOCOL_SIMPLE_SERIAL
typedef void (*ax25_callback_t)(struct AX25Msg *msg);
#endif
#if SERIAL_PROTOCOL == PROTOCOL_KISS
typedef void (*ax25_callback_t)(struct AX25Ctx *ctx);
#endif
/**
@ -170,6 +178,7 @@ typedef struct AX25Msg
void ax25_poll(AX25Ctx *ctx);
void ax25_sendVia(AX25Ctx *ctx, const AX25Call *path, size_t path_len, const void *_buf, size_t len);
void ax25_sendRaw(AX25Ctx *ctx, void *_buf, size_t len);
/**
* Send an AX25 frame on the channel.