Clean codeHEADmain

1 files changed, 8 insertions, 5 deletions

diff --git a/src/main.c b/src/main.c
index b26543d..051449c 100644
--- a/src/main.c
+++ b/src/main.c
@@ -12,10 +12,13 @@ char cmd[64];
 char *cmdptr=cmd;
 
 // Execute command from cmd buffer
+// This is a test function which is buggy
 void exec(){
-  if(!strncmp(cmd, "blink", strlen("exit")))
+  if(cmd == cmdptr)
+	return;
+  else if(!strncmp(cmd, "blink", 5))
 	gpio_blink_led(1);
-  else if(!strncmp(cmd, "help", strlen("help")))
+  else if(!strncmp(cmd, "help", 4))
 	tty_putstr(HELP);
   else if(cmdptr != cmd)
 	tty_putstr("Unknown command (see help)\n\r");
@@ -30,6 +33,8 @@ void main(){
 
 
   // REPL
+  // TODO: Handling arrows etc.
+  // Pressing arrow freezes the shell
   char c=tty_getchar();
   tty_putstr(MOTD);
   tty_putstr(PROMPT);
@@ -47,14 +52,12 @@ void main(){
 		cmdptr--;
 	  }
 	}
-	else{
+	else if(c>=32 && c <= 127){ // Printable char
 	  *cmdptr=c;
 	  cmdptr++;
 	  tty_putchar(c);
 	}
   }
 
-
-
   return;
 }