Diff: main.cpp

Revision:

0:440ae480bff2

Child:

1:97884b766b51

diff -r 000000000000 -r 440ae480bff2 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Aug 24 01:36:23 2015 +0000
@@ -0,0 +1,115 @@
+#include "mbed.h"
+
+Ticker Read_Port;
+PortIn     DataIn(PortC, 0x000000FF);   // p21-p26
+DigitalOut Reset(PTC12);
+Serial Comm(USBTX, USBRX);
+
+#define RX_BUFF_SIZE  64
+
+int rx_write_ptr=0;
+int rx_read_ptr=0;
+int RX_buff[RX_BUFF_SIZE];
+
+int Data_avl;
+int Port_Data;
+
+void Serial_Read_callback()
+{
+    RX_buff[rx_write_ptr++]=Comm.getc();
+    if(rx_write_ptr >= RX_BUFF_SIZE)
+        rx_write_ptr=0;
+    
+}
+
+int Serial_Read()
+{
+    int temp;
+    
+    temp=RX_buff[rx_read_ptr++];
+    if(rx_read_ptr >= RX_BUFF_SIZE)
+        rx_read_ptr=0;
+    return temp;
+}
+
+int Serial_Available()
+{
+    if(rx_read_ptr != rx_write_ptr)
+        return 1;
+    else
+        return 0;
+}
+
+void Read_Port_callback()
+{
+    Port_Data=DataIn.read();
+    Data_avl=1;
+}
+
+int main()
+{
+    int ch;
+    int state=0;
+    int cmd;
+    int new_frame;
+    int run_debug;
+    Comm.baud(115200);
+    Comm.attach(&Serial_Read_callback);
+    
+    while(true)
+    {
+        if(Serial_Available())
+        {
+            ch=Serial_Read();
+            switch (state)
+            {
+                case 0:     if(ch == '<')
+                                state++;
+                            break;
+                            
+                case 1:     cmd = ch;
+                            state++;
+                            break;
+                            
+                case 2:     if(ch == '>')
+                            {
+                                state=0;
+                                new_frame =1;
+                            }    
+                            break;
+                
+                                
+            }//switch
+            
+            
+        }//Serial_available
+        
+        if(new_frame)
+        {
+            new_frame =0;
+            
+            if(cmd == 'P')
+            {
+                Read_Port.attach(&Read_Port_callback,0.1);
+                Reset=0;
+                wait(0.01);
+                Reset=1;
+                run_debug=1;
+            }
+            else if(cmd == 'X')
+            {
+                Read_Port.detach();
+                run_debug=0;
+            }   
+            
+        }
+        if(run_debug)
+        {
+            if(Data_avl)
+            {
+                Comm.printf("<%d>",Port_Data);
+            }
+        }
+        
+    }//while
+}