X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fnet%2Fax25.c;h=d2c2639b105805a79385722277cdf4081cf6618e;hb=0638e6c0ca69a05d5d023186abebe63645210b1b;hp=889136595f52997830d310eb5cf342bce1d6f12e;hpb=63a35af8aab90ed049447a2837666a52f13b9598;p=bertos.git

diff --git a/bertos/net/ax25.c b/bertos/net/ax25.c
index 88913659..d2c2639b 100644
--- a/bertos/net/ax25.c
+++ b/bertos/net/ax25.c
@@ -63,7 +63,6 @@ static void ax25_decode(AX25Ctx *ctx)
 	uint8_t *buf = ctx->buf;
 
 	DECODE_CALL(buf, msg.dst.call);
-	ASSERT(!(*buf & 0x01));
 	msg.dst.ssid = (*buf++ >> 1) & 0x0F;
 
 	DECODE_CALL(buf, msg.src.call);
@@ -112,6 +111,17 @@ static void ax25_decode(AX25Ctx *ctx)
 		ctx->hook(&msg);
 }
 
+
+/**
+ * Check if there are any AX25 messages to be processed.
+ * This function read available characters from the medium and search for
+ * any AX25 messages.
+ * If a message is found it is decoded and the linked callback executed.
+ * This function may be blocking if there are no available chars and the KFile
+ * used in \a ctx to access the medium is configured in blocking mode.
+ *
+ * \param ctx AX25 context to operate on.
+ */
 void ax25_poll(AX25Ctx *ctx)
 {
 	int c;
@@ -201,6 +211,16 @@ static void ax25_sendCall(AX25Ctx *ctx, const AX25Call *addr)
 			ax25_putchar(ctx, ' ' << 1);
 }
 
+/**
+ * Send an AX25 frame on the channel.
+ * \param ctx AX25 context to operate on.
+ * \param dst the destination callsign for the frame, \see AX25_CALL
+ *        for a handy way to create a callsign on the fly.
+ * \param src the source callsign for the frame, \see AX25_CALL
+ *        for a handy way to create a callsign on the fly.
+ * \param _buf payload buffer.
+ * \param len length of the payload.
+ */
 void ax25_send(AX25Ctx *ctx, const AX25Call *dst, const AX25Call *src, const void *_buf, size_t len)
 {
 	const uint8_t *buf = (const uint8_t *)_buf;
@@ -233,6 +253,14 @@ void ax25_send(AX25Ctx *ctx, const AX25Call *dst, const AX25Call *src, const voi
 	kfile_putc(HDLC_FLAG, ctx->ch);
 }
 
+
+/**
+ * Init the AX25 protocol decoder.
+ *
+ * \param ctx AX25 context to init.
+ * \param channel Used to gain access to the physical medium
+ * \param hook Callback function called when a message is received
+ */
 void ax25_init(AX25Ctx *ctx, KFile *channel, ax25_callback_t hook)
 {
 	ASSERT(ctx);