Diff: HC06_bluetooth.h

Revision:

0:78b84e1ce9df

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HC06_bluetooth.h	Tue Feb 18 21:16:23 2020 +0000
@@ -0,0 +1,154 @@
+#ifndef HC06_BLUETOOTH_H
+#define HC06_BLUETOOTH_H
+
+Serial bt(PTE16, PTE17);
+
+char bt_c;
+char bt_buffer[80];
+char bt_name[80];
+int bt_pin;
+int bt_count;
+int i;
+int action;
+int bt_baud[10]={0,1200,2400,4800,9600,19200,38400,57600,115200,230400};
+int bt_baud_select=4;
+
+int bt_baud_decode(int baud)
+{
+    int target_baud;
+    target_baud=0;
+    if(baud >= 1 && baud <= 9)
+    {
+        target_baud=baud;
+    }
+    else
+    {
+        for(int i = 1; i <=9, i++)
+        {
+            if(baud ==  bt_baud(i))
+            {
+                target_baud=baud;           
+            }
+        }
+    }
+    if(target_baud >0)
+    {
+        return(bt_baud(target_baud));
+    }
+    else
+    {
+        return(-1);   
+    }    
+}
+
+int bt_baud(int baud);
+{
+    int target_baud;
+    target_baud=bt_baud_decode(baud);
+    if(target_baud > 0)
+    {
+        bt.baud(bt_baud(target_baud));
+        return(bt_baud(target_baud));
+    }
+    else
+    {
+        return(-1);   
+    }     
+}
+
+int bt_find_baud()
+{
+    
+    for(bt_baud_select=1; bt_baud_select<=9; bt_baud_select++)
+    {
+//        pc.printf("Trying case %1i: %i baud\n",bt_baud_select,bt_baud[bt_baud_select]);
+        bt.baud(bt_baud[bt_baud_select]);
+//        pc.printf("Sending \"AT\"\n");
+        bt_count=0;
+        bt_buffer[0]=0;
+        bt_buffer[1]=0;
+        bt.printf("AT");  /*ask bluetooth for response, expect "OK" */
+//        bt.printf("AT\r\n");  /*ask bluetooth for response, expect "OK" */
+
+        for( i=0; i<10000000; i++)
+        {
+            if(bt.readable())
+            {
+                bt_buffer[bt_count]=bt.getc();
+                pc.putc(bt_buffer[bt_count]);
+                if(bt_count==0 && bt_buffer[0]=='O')
+                    {bt_count++;}
+                if(bt_count==1 && bt_buffer[1]=='K')
+                    {bt_count++; break;}
+            }
+        }
+        if(bt_buffer[0]=='O' && bt_buffer[1]=='K')
+        {
+//            pc.printf("\nReceived \"OK\" at case %1i: %i baud\n",bt_baud_select,bt_baud[bt_baud_select]);
+            break;
+        }
+        else
+        {
+//             pc.printf("\nFailed to receive \"OK\" at case %1i: %i baud\n",bt_baud_select,bt_baud[bt_baud_select]);
+        }           
+    }
+    if(bt_baud_select > 9)
+    {
+//        pc.printf("Unable to identify HC-06 Bluetooth baud rate.\nShutting down.\n");
+        return(-1);
+    }
+    else
+    {
+        return(bt_baud[bt_baud_select]);
+    }        
+}
+
+int bt_default_baud(int baud);
+{
+    int target_baud;
+    target_baud=lcd_baud_decode(baud);
+    if(target_baud < 0)
+    {
+        return(-1);   
+    }  
+    bt_baud(bt_find_baud());
+    bt.printf("AT+BAUD%1i",target_baud);
+    bt_baud(target_baud);
+    for( i=0; i<10000000; i++)
+    {
+        if(bt.readable())
+        {
+            bt.getc();
+        }
+    } 
+    return(bt_baud[target_baud]);
+}
+
+int bt_device_name(char bt_name[])
+{
+    bt.printf("AT+NAME%s",bt_name);
+    for( i=0; i<10000000; i++)
+    {
+        if(bt.readable())
+        {
+            bt.getc();
+        }
+    }        
+}
+
+int bt_set_pin(int bt_pin)
+{
+    if(bt_pin < 0 || bt_pin > 9999) {return(-1);}
+    bt.printf("AT+PIN%04i",bt_pin);
+    for( i=0; i<10000000; i++)
+    {
+        if(bt.readable())
+        {
+            bt.getc();
+        }
+    }  
+
+}
+
+
+#endif //HC06_BLUETOOTH_H
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