Moved the iam_send to demo/handler/s_iam.c to keep application code out of the core encode/decode library.

bacnet-stack/demo/handler/s_iam.c

@@ -27,8 +27,6 @@
 #include <errno.h>
 #include <string.h>
 #include "config.h"
-#include "config.h"
-#include "txbuf.h"
 #include "bacdef.h"
 #include "bacdcode.h"
 #include "address.h"
@@ -40,34 +38,49 @@
 #include "iam.h"
 /* some demo stuff needed */
 #include "handlers.h"
-#include "txbuf.h"
 
-void Send_I_Am(
+int iam_encode_pdu(
-    uint8_t * buffer)
+    uint8_t * buffer,
+    BACNET_ADDRESS * dest,
+    BACNET_NPDU_DATA * npdu_data)
 {
     int len = 0;
     int pdu_len = 0;
-    BACNET_ADDRESS dest;
-    int bytes_sent = 0;
-    BACNET_NPDU_DATA npdu_data;
 
     /* I-Am is a global broadcast */
-    datalink_get_broadcast_address(&dest);
+    datalink_get_broadcast_address(dest);
     /* encode the NPDU portion of the packet */
-    npdu_encode_npdu_data(&npdu_data, false, MESSAGE_PRIORITY_NORMAL);
+    npdu_encode_npdu_data(npdu_data, false, MESSAGE_PRIORITY_NORMAL);
-    pdu_len = npdu_encode_pdu(&buffer[0], &dest, NULL, &npdu_data);
+    pdu_len = npdu_encode_pdu(&buffer[0], dest, NULL, npdu_data);
     /* encode the APDU portion of the packet */
     len =
         iam_encode_apdu(&buffer[pdu_len], Device_Object_Instance_Number(),
         MAX_APDU, SEGMENTATION_NONE, Device_Vendor_Identifier());
     pdu_len += len;
+
+    return pdu_len;
+}
+
+void Send_I_Am(
+    uint8_t * buffer)
+{
+    int pdu_len = 0;
+    BACNET_ADDRESS dest;
+    int bytes_sent = 0;
+    BACNET_NPDU_DATA npdu_data;
+
+    /* are we are forbidden to send? */
+    if (!dcc_communication_enabled())
+        return 0;
+    /* encode the data */
+    pdu_len = iam_encode_pdu(buffer, &dest, &npdu_data);
     /* send data */
     bytes_sent = datalink_send_pdu(&dest, &npdu_data, &buffer[0], pdu_len);
+
 #if PRINT_ENABLED
     if (bytes_sent <= 0)
         fprintf(stderr, "Failed to Send I-Am Reply (%s)!\n",
             strerror(errno));
 #endif
-
+    return bytes_sent;
-    return;
 }

bacnet-stack/include/client.h

@@ -41,6 +41,10 @@ extern "C" {
 /* unconfirmed requests */
     void Send_I_Am(
         uint8_t * buffer);
+    int iam_encode_pdu(
+        uint8_t * buffer,
+        BACNET_ADDRESS * dest,
+        BACNET_NPDU_DATA * npdu_data);
 
     void Send_WhoIs(
         int32_t low_limit,

bacnet-stack/ports/atmega168/dlmstp.c

@@ -44,7 +44,7 @@
 #include "bits.h"
 #include "bacaddr.h"
 /* special optimization - I-Am response in this module */
-#include "iam.h"
+#include "client.h"
 #include "txbuf.h"
 
 /* This file has been customized for use with small microprocessors */
@@ -277,7 +277,7 @@ void dlmstp_fill_bacnet_address(
 }
 
 /* I Am from handler */
-extern bool Send_I_Am;
+extern bool Send_I_Am_Flag;
 
 /* look at any of the unconfirmed message bits and encode if set */
 static uint16_t dlmstp_encode_unconfirmed_frame(
@@ -287,8 +287,8 @@ static uint16_t dlmstp_encode_unconfirmed_frame(
     BACNET_NPDU_DATA npdu_data;
     uint16_t len = 0;
 
-    if (Send_I_Am) {
+    if (Send_I_Am_Flag) {
-        Send_I_Am = false;
+        Send_I_Am_Flag = false;
         TransmitPacket = Handler_Transmit_Buffer;
         len = iam_encode_pdu(&TransmitPacket[0], &dest, &npdu_data);
     }

bacnet-stack/ports/atmega168/h_whois.c

@@ -37,7 +37,7 @@
 #include "client.h"
 #include "txbuf.h"
 
-bool Send_I_Am = true;
+bool Send_I_Am_Flag = true;
 
 void handler_who_is(
     uint8_t * service_request,
@@ -54,7 +54,7 @@ void handler_who_is(
         whois_decode_service_request(service_request, service_len, &low_limit,
         &high_limit);
     if (len == 0) {
-        Send_I_Am = true;
+        Send_I_Am_Flag = true;
     } else if (len != -1) {
         /* is my device id within the limits? */
         target_device = Device_Object_Instance_Number();
@@ -63,7 +63,7 @@ void handler_who_is(
             /* BACnet wildcard is the max instance number - everyone responds */
             ((BACNET_MAX_INSTANCE >= (uint32_t) low_limit) &&
                 (BACNET_MAX_INSTANCE <= (uint32_t) high_limit))) {
-            Send_I_Am = true;
+            Send_I_Am_Flag = true;
         }
     }
 

bacnet-stack/ports/atmega168/main.c

@@ -37,7 +37,7 @@
 #include "av.h"
 
 /* From the WhoIs hander - performed by the DLMSTP module */
-extern bool Send_I_Am;
+extern bool Send_I_Am_Flag;
 /* local version override */
 const char *BACnet_Version = "1.0";
 
@@ -134,7 +134,7 @@ static void input_switch_read(
             dlmstp_set_mac_address(Address_Switch);
 #endif
             Device_Set_Object_Instance_Number(86000 + Address_Switch);
-            Send_I_Am = true;
+            Send_I_Am_Flag = true;
         }
     }
 }