Diff: main.cpp

Revision:

0:985e576cf826

Child:

1:24c0ddc2b2f0

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Aug 27 18:16:55 2014 +0000
@@ -0,0 +1,46 @@
+#include "mbed.h"
+#include <SimpleModbus.h>
+
+#define baud 9600
+#define timeout 1000
+#define polling 200 // the scan rate
+#define retry_count 10
+#define TxEnablePin 2
+#define LED 13
+
+enum {
+    PACKET1,
+    PACKET2,
+    TOTAL_NO_OF_PACKETS // leave this last entry
+};
+Packet packets[TOTAL_NO_OF_PACKETS];
+packetPointer packet1 = &packets[PACKET1];
+packetPointer packet2 = &packets[PACKET2];
+unsigned int readRegs[2];
+unsigned int writeRegs[2];
+
+void setup()
+{
+    modbus_construct(packet1, 1, READ_HOLDING_REGISTERS, 0, 2, readRegs);
+    modbus_construct(packet2, 1, PRESET_MULTIPLE_REGISTERS, 2, 2, writeRegs);
+    modbus_configure(timeout, polling, retry_count, packets, TOTAL_NO_OF_PACKETS);
+
+}
+
+void loop()
+{
+    modbus_update();
+
+	writeRegs[0] = 255;
+//    writeRegs[1] = analogRead(A1); // update data to be written to arduino slave
+//
+//    if (readRegs[0]==255) digitalWrite(LED, HIGH);
+//    else digitalWrite(LED, LOW);
+
+}
+
+int main()
+{
+    setup();
+    while(1) loop();
+}