Added port for ATmega8 - but not quite small enough yet. Compiled for ATmega168 (but at 8734 bytes of flash).

2008-09-27 22:19:23 +00:00
parent 437de29ce7
commit 67a7cdbc12
23 changed files with 4645 additions and 0 deletions
@@ -0,0 +1,123 @@
+/*####COPYRIGHTBEGIN####
+ -------------------------------------------
+ Copyright (C) 2007 Steve Karg
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 2
+ of the License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to:
+ The Free Software Foundation, Inc.
+ 59 Temple Place - Suite 330
+ Boston, MA  02111-1307, USA.
+
+ As a special exception, if other files instantiate templates or
+ use macros or inline functions from this file, or you compile
+ this file and link it with other works to produce a work based
+ on this file, this file does not by itself cause the resulting
+ work to be covered by the GNU General Public License. However
+ the source code for this file must still be made available in
+ accordance with section (3) of the GNU General Public License.
+
+ This exception does not invalidate any other reasons why a work
+ based on this file might be covered by the GNU General Public
+ License.
+ -------------------------------------------
+####COPYRIGHTEND####*/
+#include <stdbool.h>
+#include <stdint.h>
+#include <stddef.h>
+#include "bits.h"
+#include "apdu.h"
+#include "bacdef.h"
+#include "bacdcode.h"
+#include "bacenum.h"
+#include "handlers.h"
+
+bool apdu_service_supported(
+    BACNET_SERVICES_SUPPORTED service_supported)
+{
+    bool status = false;
+
+    if (service_supported == SERVICE_SUPPORTED_READ_PROPERTY) {
+        status = true;
+    }
+
+    return status;
+}
+
+uint16_t apdu_decode_confirmed_service_request(
+    uint8_t * apdu,     /* APDU data */
+    uint16_t apdu_len,
+    BACNET_CONFIRMED_SERVICE_DATA * service_data,
+    uint8_t * service_choice,
+    uint8_t ** service_request,
+    uint16_t * service_request_len)
+{
+    uint16_t len = 0;   /* counts where we are in PDU */
+
+    service_data->segmented_message = (apdu[0] & BIT3) ? true : false;
+    service_data->more_follows = (apdu[0] & BIT2) ? true : false;
+    service_data->segmented_response_accepted =
+        (apdu[0] & BIT1) ? true : false;
+    service_data->max_segs = decode_max_segs(apdu[1]);
+    service_data->max_resp = decode_max_apdu(apdu[1]);
+    service_data->invoke_id = apdu[2];
+    len = 3;
+    if (service_data->segmented_message) {
+        service_data->sequence_number = apdu[len++];
+        service_data->proposed_window_number = apdu[len++];
+    }
+    *service_choice = apdu[len++];
+    *service_request = &apdu[len];
+    *service_request_len = apdu_len - len;
+
+    return len;
+}
+
+void apdu_handler(
+    BACNET_ADDRESS * src,
+    uint8_t * apdu,     /* APDU data */
+    uint16_t apdu_len)
+{
+    BACNET_CONFIRMED_SERVICE_DATA service_data = { 0 };
+    uint8_t service_choice = 0;
+    uint8_t *service_request = NULL;
+    uint16_t service_request_len = 0;
+    uint16_t len = 0;   /* counts where we are in PDU */
+
+    if (apdu) {
+        /* PDU Type */
+        switch (apdu[0] & 0xF0) {
+            case PDU_TYPE_CONFIRMED_SERVICE_REQUEST:
+                len = apdu_decode_confirmed_service_request(&apdu[0],   /* APDU data */
+                    apdu_len, &service_data, &service_choice, &service_request,
+                    &service_request_len);
+                if (service_choice == SERVICE_CONFIRMED_READ_PROPERTY) {
+                    handler_read_property(service_request, service_request_len,
+                        src, &service_data);
+                } else {
+                    handler_unrecognized_service(service_request,
+                        service_request_len, src, &service_data);
+                }
+                break;
+            case PDU_TYPE_UNCONFIRMED_SERVICE_REQUEST:
+            case PDU_TYPE_SIMPLE_ACK:
+            case PDU_TYPE_COMPLEX_ACK:
+            case PDU_TYPE_SEGMENT_ACK:
+            case PDU_TYPE_ERROR:
+            case PDU_TYPE_REJECT:
+            case PDU_TYPE_ABORT:
+            default:
+                break;
+        }
+    }
+    return;
+}