Initial support for ATmega328P (Arduino Duemilanove).

[bertos.git] / bertos / net / ax25.c

diff --git a/bertos/net/ax25.c b/bertos/net/ax25.c
index 889136595f52997830d310eb5cf342bce1d6f12e..d2c2639b105805a79385722277cdf4081cf6618e 100644 (file)
--- 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);