/*
** ============================================================================
**
** FILE
**  Id: EZLink_Modem_cmd.c, v2.0
**
** DESCRIPTION
**  EZLink Modem Demo main file 
**
** COPYRIGHT
**  Copyright 2006 Integration Associates Inc.  All rights reserved.
**
** LIMITED USE LICENSE.  
**  By using this software, the user agrees to the terms of the 
**  following license.  If the user does not agree to these terms, 
**  then this software should be returned within 30 days and a full 
**  refund of the purchase price or license fee will provided.  
**  Integration Associates hereby grants a license to the user on the 
**  following terms and conditions:  The user may use, copy, modify, 
**  revise, translate, abridge, condense, expand, collect, compile, 
**  link, recast, distribute, transform or adapt this software solely 
**  in connection with the development of products incorporating 
**  integrated circuits sold by Integration Associates.  Any other use 
**  for any other purpose is expressly prohibited with the prior written 
**  consent of Integration Associates.
**
** Any copy or modification made must satisfy the following conditions:
** 
** 1. Both the copyright notice and this permission notice appear in all copies of the software, 
**    derivative works or modified versions, and any portions thereof, and that both notices 
**    appear in supporting documentation.
**
** 2. All copies of the software shall contain the following acknowledgement: "Portions of this 
**    software are used under license from Integration Associates Inc. and are copyrighted."
**
** 3  Neither the name of Integration Associates Inc. nor any of its subsidiaries may be used 
**    to endorse or promote products derived from this software without specific prior written 
**    permission.
**
** THIS SOFTWARE IS PROVIDED BY "AS IS" AND ALL WARRANTIES OF ANY KIND, INCLUDING THE IMPLIED 
** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR USE, ARE EXPRESSLY DISCLAIMED.  THE DEVELOPER 
** SHALL NOT BE LIABLE FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.  
** THIS SOFTWARE MAY NOT BE USED IN PRODUCTS INTENDED FOR USE IN IMPLANTATION OR OTHER DIRECT 
** LIFE SUPPORT APPLICATIONS WHERE MALFUNCTION MAY RESULT IN THE DIRECT PHYSICAL HARM OR INJURY 
** TO PERSONS.  ALL SUCH IS USE IS EXPRESSLY PROHIBITED.
**
** ============================================================================
*/

//===============================================================================================
// Radio modem
// ASCIII command interpreter
//===============================================================================================

int cis;            // CMD interpreter status
int iparam;         // command parameter, 0-255
long lparam;        // command parameter, 0-65535

void CMD_init(void)
  {
  cis = 0;
  }

void printAbout(void)
  {
  printf("\r\nEZLink demo");
  printf("\r\nRadio modem V");
  printf(FW_VERSION);
  printf("\r\nIntegration, 2008\r\n");
  }

void printOK(void)
  {
  printf("\n\rOK\n\r>");
  }

void printHelp(void)
  {
  printf("\r\nF=n      : Set the rf channel (0-");
  printf(MAX_FREQ);
  printf(")");
  printf("\r\nD=n      : Set the rf datarate (e.g.: 9600)");
  printf("\r\nP=n      : Set the rf output power (0-7)");
  printf("\r\nS?       : Print the current settings");
  printf("\r\nI        : Print firmware version information");
  printOK();
  }

void CmdExec(char CMD)                                          // CMD character interpreter
  {
  if ((CMD != '\n') && (CMD != ' '))                            // don't use <space> and <LF>
  switch (cis)                                                  // cis: Command Interpreter Status
    {
    case 0:                                                     // cis=0: basic state
      switch (CMD)
        {
        case '\r':
          printOK();
          break;
        case '?':
          cis = 1;
          break;
        case 'I': case 'i':
          cis = 2;
          break;
        case 'S': case 's':
          cis = 3;
          break;
        case 'F': case 'f':
          cis = 10;
          iparam = 0;
          break;
        case 'D': case 'd':
          cis = 20;
          lparam = 0;
          break;
        case 'P': case 'p':
          cis = 30;
          iparam = 0;
          break;
        default:
          cis = 255;
          break;
        }
      break;
    case 1:                                                     // cis=2: "?" arrived: print help
      if (CMD == '\r')
        {
        printHelp();
        cis = 0;
        break;
        }
      else cis = 255;
      break;
    case 2:                                                     // cis=2: "I" arrived: print version info
      if (CMD == '\r')
        {
        printAbout();
        cis = 0;
        break;
        }
      else cis = 255;
      break;
    case 3:                                                     // cis=2: "S" arrived: print current settings
      switch (CMD)
        {
        case '=': break;
        case '?': break;
        case '\r':
          printf("\r\nChannel : %U", read_EEPROM(EE_rf_ch));
          lparam = read_EEPROM(EE_rf_dr + 1);
          lparam = lparam << 8;
          lparam += read_EEPROM(EE_rf_dr);
          printf("\r\nDatarate: %Lu", lparam);
          printf("\r\nRF power: %U", read_EEPROM(EE_rf_pwr));
          printOK();
          cis = 0;
          break;
        default:
          cis = 255;
          break;
        }
      break;
    case 10:                                                    // cis=3: "F" arrived: frequency setting
      switch (CMD)
        {
        case '=': break;
        case '0': case '1': case '2': case '3': case '4':
        case '5': case '6': case '7': case '8': case '9':
          iparam = iparam * 10 + CMD - '0';
          break;
        case '\r':
		  if( iparam > FREQ_maxid )
		  {
			iparam = 0;
		  }
	      Frequency_cmd = set_frq(iparam);
          send_cmd(Frequency_cmd);
          printOK();
          cis = 0;
	      break;
        default:
          cis = 255;
          break;
        }
      break;
    case 20:                                                    // cis=3: "D" arrived: datarate setting
      switch (CMD)
        {
        case '=': break;
        case '0': case '1': case '2': case '3': case '4':
        case '5': case '6': case '7': case '8': case '9':
          lparam = lparam * 10 + CMD - '0';
          break;
        case '\r':
          Data_rate_cmd = set_dr(lparam);
          send_cmd(Data_rate_cmd);
          printOK();
          cis = 0;
          break;
        default:
          cis = 255;
          break;
        }
      break;
    case 30:                                                    // cis=3: "P" arrived: output power setting
      switch (CMD)
        {
        case '=': break;
        case '0': case '1': case '2': case '3': case '4':
        case '5': case '6': case '7': case '8': case '9':
          iparam = iparam * 10 + CMD - '0';
          break;
        case '\r':
          Transmitter_control_cmd = set_tx(RF_DEV, iparam);
          send_cmd(Transmitter_control_cmd);
          printOK();
          cis = 0;
          break;
        default:
          cis = 255;
          break;
        }
      break;

    case 255:                                                   // Bad command or parameter
      if (CMD == 0x0D)
        {
        printf("\n\rERROR\n\r>");
        cis = 0;
        }
      break;
    }
  }