C:/EDK_Projects/Spartan3E/TestApp_MicroSD/src/term.c

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/******************************************************************************
*
*     Author: Gary Chung
*
******************************************************************************/

/******************************* Include Files *******************************/

#include "xuartlite_l.h"
#include "xio.h"
#include "string.h"
#include "fat16.h"
#include "term.h"


// Externs
extern Fat16 FS;

// Terminal line buffer
volatile char TermBuff[LINE_SIZE];

/********************************* Functions *********************************/

void Term_Clear()
{
   int i;
   xil_printf("\r");
   for(i = 0; i < 40; i++)
      xil_printf("\n");
   for(i = 0; i < 40; i++)
   {
      Term_PutChar(0x1b);
      Term_PutChar(0x5b);
      Term_PutChar(0x41);
   }
}


void Term_Echo()
{
   char *word;
   
   word = strtok(NULL, " ");
   
   while(word)
   {
      xil_printf("%s ", word);
      word = strtok(NULL, " ");
   }
   
   xil_printf("\r\n");
}

void Term_Ls()
{
   Fat16_SDPrintDir(&FS);
}


void Term_Read()
{
   char *word;
   
   word = strtok(NULL, " ");
   
   Fat16_SDReadFile(&FS, word);
}


int Term_Parse()
{
   int i;
   char *word;
   
   word = strtok(TermBuff, " ");
   
   if(!word) // User enterd an empty line
      return 2;
      
   if( !strcmp(word, "clear") )
      Term_Clear();
   
   else if( !strcmp(word, "echo") )
      Term_Echo();
      
   else if( !strcmp(word, "exit") ) {
      xil_printf("\r\n"); return 0; }
      
   else if( !strcmp(word, "read") )
      Term_Read();
      
   else if( !strcmp(word, "ls") )
      Term_Ls();
      
   else
      xil_printf("prompt: %s: command not found.\r\n", word);

   return 1;
}


int Term_Prompt()
{
   int len = 0, flag = 0, BuffCount = 0;
   char c;
   
   xil_printf("> ");

   do {
      c = XUartLite_RecvByte(STDIO_BASEADDR);
            
      if(c == '\b') // [Backspace] was pressed
      {
         Term_PutChar(' ');
         
         if(len > 0) {
            Term_PutChar('\b'); --len; }

      }
      else
         TermBuff[len++] = c;
           
   } while(c != '\r');
   
   TermBuff[--len] = '\0'; // replace '\r' with NULL
   xil_printf("\r\n");
   
   return Term_Parse();
}

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