Added a MSTP monitor build for BACnet Development Kit. Use 'make BUILD=monitor' with Makefile. Uses second serial port at 115200, and can be monitored using mstpcap utility.

bacnet-stack/ports/bdk-atxx4-mstp/Makefile

@@ -155,6 +155,10 @@ ifeq (${BUILD},release)
 OPTIMIZATION = -Os $(OPTIMIZE_FLAGS)
 DEBUGGING = -DNDEBUG
 endif
+ifeq (${BUILD},monitor)
+OPTIMIZATION = -Os $(OPTIMIZE_FLAGS)
+DEBUGGING = -DNDEBUG -DMSTP_MONITOR
+endif
 
 ## BACnet options
 BFLAGS = -DBACDL_MSTP
@@ -271,7 +275,7 @@ AVRDUDE_WRITE_FLASH = -e -U flash:w:$(TARGET).hex
 AVRDUDE_INSTALL = $(AVRDUDE_WRITE_FLASH)
 #AVRDUDE_INSTALL += $(AVRDUDE_WRITE_FUSES)
 
-## Objects that must be built in order to link
+## Objects not in library that must be built in order to link
 OBJECTS = $(COBJ) $(DEMOOBJ)
 
 ## Build

bacnet-stack/ports/bdk-atxx4-mstp/bacnet.c

@@ -31,6 +31,7 @@
 #include "nvdata.h"
 #include "rs485.h"
 #include "input.h"
+#include "adc.h"
 /* BACnet Stack includes */
 #include "datalink.h"
 #include "npdu.h"

bacnet-stack/ports/bdk-atxx4-mstp/rs485.c

@@ -108,6 +108,9 @@ ISR(USART0_RX_vect)
     if (BIT_CHECK(UCSR0A, RXC0)) {
         /* data is available */
         data_byte = UDR0;
+#ifdef MSTP_MONITOR
+        UDR1 = data_byte;
+#endif
         (void) FIFO_Put(&Receive_Buffer, data_byte);
         timer_elapsed_start(&Silence_Timer);
     }
@@ -144,6 +147,9 @@ void rs485_bytes_send(
     while (nbytes) {
         /* Send the data byte */
         UDR0 = *buffer;
+#ifdef MSTP_MONITOR
+        UDR1 = *buffer;
+#endif
         while (!BIT_CHECK(UCSR0A, UDRE0)) {
             /* do nothing - wait until Tx buffer is empty */
         }

bacnet-stack/ports/bdk-atxx4-mstp/test.c

@@ -39,9 +39,24 @@ static uint8_t MSTP_MAC_Address;
 void test_init(
     void)
 {
+#ifdef MSTP_MONITOR
+    serial_baud_rate_set(115200);
+#else
+    serial_baud_rate_set(9600);
+#endif
     timer_interval_start_seconds(&Test_Timer, 1);
 }
 
+#ifdef MSTP_MONITOR
+void test_task(
+    void)
+{
+    if (timer_interval_expired(&Test_Timer)) {
+        timer_interval_reset(&Test_Timer);
+        MSTP_MAC_Address = MSTP_MAC_Address;
+    }
+}
+#else
 void test_task(
     void)
 {
@@ -81,3 +96,4 @@ void test_task(
         serial_byte_transmit_complete();
     }
 }
+#endif