1 files changed, 41 insertions, 0 deletions

diff --git a/shell.c b/shell.c
new file mode 100644
index 0000000..dc8d10d
--- /dev/null
+++ b/shell.c
@@ -0,0 +1,41 @@
+#include "shell.h"
+#include <stddef.h>
+#include <string.h>
+#include <stdio.h>
+#include "tshield/tshield.h"
+
+#define MAX_ARGS 5
+#define IN_LENGTH 80
+
+static int process_command(int argc, char **argv);
+
+void shell() {
+  char in[IN_LENGTH];
+  int argc;
+  char *argv[MAX_ARGS];
+
+  while(1) {
+    printf ("root@arduino$ ");
+
+    fgets(in, IN_LENGTH, stdin);
+
+    argc = 0;
+    char *p = strtok (in," \n\r");
+    while (p != NULL && argc < MAX_ARGS) {
+      argv[argc] = p;
+      argc += 1;
+      p = strtok(NULL, " \n\r");
+    }
+    printf("%d\n", process_command(argc, argv));
+  }
+}
+
+static int process_command(int argc, char **argv) {
+  if (argc < 1) return -1;
+
+  if (strcmp(argv[0], "led") == 0) {
+    return 0;
+  }
+
+  return -1;
+}
\ No newline at end of file