Diff: main.cpp

Revision:

0:8864eb729b32

Child:

1:450535d62644

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri May 10 07:10:39 2019 +0000
@@ -0,0 +1,60 @@
+#include "mbed.h"
+ 
+Serial pc(USBTX, USBRX);
+Serial modbus(PB_9, PB_8,9600);//(tx,rx,baud)
+ 
+DigitalOut DE_RE(PB_0);
+
+ 
+void PC_callback() {
+    // Note: you need to actually read from the serial to clear the RX interrupt
+    //modbus.printf("PC_callback\r\n");
+    modbus.putc(pc.getc());
+} 
+void MODBUS_callback() {
+    //pc.printf("MODBUS_callback\r\n");
+    pc.putc(modbus.getc());
+}
+ 
+int main() {
+    pc.attach(&PC_callback);
+    modbus.attach(&MODBUS_callback);
+    while(1) {
+        
+        /*
+        if(pc.readable()) {
+            modbus.putc(pc.getc());
+            pc_activity = !pc_activity;
+        }
+        */
+        DE_RE=1;
+        
+        modbus.putc(0x01);
+        modbus.putc(0x03);
+        modbus.putc(0x00);
+        modbus.putc(0x00);
+        modbus.putc(0x00);
+        modbus.putc(0x01);
+        modbus.putc(0x84);
+        modbus.putc(0x0A);
+        //wait(3);
+        wait_ms(2);
+        DE_RE =0 ;
+        /*    
+        modbus.putc(0x31);
+        //}
+        //DE_RE =0 ;
+        //wait(0.1);
+        
+        
+        if(modbus.readable()>0) {
+            pc.printf("modbus read something\r\n");
+            pc.putc(modbus.getc());
+        } else{
+            pc.printf("modbus read nothing\r\n");
+        }
+        
+        */
+        wait(10);
+    }
+}
\ No newline at end of file