diff options
Diffstat (limited to 'comhan.c')
| -rw-r--r-- | comhan.c | 40 |
1 files changed, 36 insertions, 4 deletions
@@ -30,8 +30,9 @@ #define CMD_TERMINATE 14
#define CMD_SETPRI 15
#define CMD_DISPATCH 16
+#define CLOCK 17
-#define NUM_CMDS 17
+#define NUM_CMDS 18
int length; /* Length of the command line. */
unsigned sp_save; /* A stack save for mod 4 dispatch. */
@@ -44,12 +45,12 @@ char *cmds[] = { "version", "date", "directory", "stop", "help", "prompt", "alias", "show",
"allocate", "free", "load", "resume",
"run", "suspend", "terminate", "setpriority",
- "dispatch", NULL};
+ "dispatch", "clock", NULL};
char *aliases[] = {" ", " ", " ", " ",
" ", " ", " ", " ",
" ", " ", " ", " ",
" ", " ", " ", " ",
- " ", NULL};
+ " ", " ", NULL};
/*
* comhan() This is the command handler for the MPX OS.
@@ -91,6 +92,7 @@ void comhan() { case CMD_TERMINATE: cmd_terminate(args); break;
case CMD_SETPRI: cmd_setpri(args); break;
case CMD_DISPATCH: cmd_dispatch(); break;
+ case CLOCK: cmd_clock(args); break;
default:
printf("Can't recognize.\n");
break;
@@ -123,7 +125,7 @@ int get_cmd(char cmd[]){ int set_args(char buffer[], char *args[]) {
/* use string tok to set the contents of args from buffer
and return the number of args (will go into argc) */
- char separators[5] = " =/,"; //Characters that separate tokens
+ char separators[5] = " =/,:"; //Characters that separate tokens
int i = 0; //loop control
args[i] = strtok(buffer, separators); //Get first token
@@ -236,6 +238,7 @@ void cmd_help(char *args[]) { help[CMD_TERMINATE] = "terminate name Terminates the process called name";
help[CMD_SETPRI] = "setpriority name=ppp Sets the priority of process name";
help[CMD_DISPATCH] = "dispatch Runs each process once";
+ help[CLOCK] = "clock [stop|start] Perform clock operations";
// print header
printf( " Name Use \n");
@@ -698,3 +701,32 @@ void cmd_dispatch() { dispatch();
return;
}
+
+/*
+ * stop, start, set, or show the clock based on args[1]
+ */
+void cmd_clock(char *args[]){
+ int hr, m, s;
+ int ret;
+ // decide what clock operation to perform
+ if (strcmp(args[1], "stop") == 0) {
+ stop_clock();
+ return;
+ } else if (strcmp(args[1], "start") == 0) {
+ start_clock();
+ return;
+ } else if (strcmp(args[1], "") == 0) {
+ read_clock(&hr, &m, &s);
+ printf("The current time is %d:%d:%d\n", hr, m, s);
+ return;
+ } else {
+ // the remaining case is to set the clock
+ // parse the input - should be "hh:mm:ss"
+ ret = set_clock(atoi(args[1]), atoi(args[2]), atoi(args[3]));
+ // call sys_sppt's set_clock(hr, mn, s)
+ // if set_clock returns -1 print error message
+ if (ret == -1) {
+ printf("Error setting clock\n");
+ }
+ }
+}
|