Diff: README.MD

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+# n-DAP_MODBUS_FEEDER_ADC:  
+##  Firmware for a PickPlace feeder control MODBUS board that controls an RC Servo and reads ADC   
+## THIS IS PROJECT MANAGEMENT REPO FOR [mbed project](https://os.mbed.com/users/chalikias/code/n-DAP_MODBUS_FEEDER_ADC/) 
+
+
+
+### Current operation:  
+*  Does not respond to read ADC MODBUS commands  
+*  Sends the ADC value only-once after RESET  
+*  When a Modbus Byte is received:  
+   * Resets INDEX (a byte-counter) when character 0x20 is received   
+   * Responds by setting a PWM Output to [9th MODBUS byte] value, to drive an RC-Servo  
+*  Does not check for the MODBUS FUNCTION '...details', only resets a BYTE-COUNTER when received (ADDRESS BYTE) 0x20 and THEN responds on the 9th Byte (2nd MODBUS DATA byte) content
+
+## MODBUS message structure  
+#### MODBUS FUNCTION send from MASTER for 'turn-on' or 'set_rc_Servo_Angle'  (partially implemented on slave)
+```
+00 ADDRESS         0x20  
+01 FUNCTION        0x10   
+02 REGISTER1       0x00    
+03 REGISTER1       0x01   
+04 NUMBERoFREGs    0x00  
+05 NUMBERoFREGs    0x01  
+06 NUMBER OF BYTES 0x00   
+07 NUMBER OF BYTES 0x02   
+08 DATA            0x00  
+09 DATA            0x00  
+10 CRC             Xxxx  
+11 CRC             XxXX  
+```
+
+#### MODBUS COMMAND send from MASTER for 'read_pin' (not impemented yet on slave)
+```
+00 ADDRESS         0x20    
+01 COMMAND         0x04    
+02 LENGTH          0x03  
+03 DATA            0x00  
+04 DATA            0x00  
+05 DATA            0x00  
+06 CRC             XxXX  
+07 CRC             XxXX 
+``` 
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