Add sleep option

Signed-off-by: Andrew 'Necromant' Andrianov <andrew@ncrmnt.org>

diff --git a/main.c b/main.c
index 1a84c2d..f6b1643 100644 (file)
--- a/main.c
+++ b/main.c
@@ -126,6 +126,7 @@ static struct option long_options[] =
        {"gpio",    required_argument, 0, 'g'},
        {"in",      optional_argument, 0, 'i'},
        {"out",     required_argument, 0, 'o'},
+       {"sleep",   required_argument, 0, 's'},
        {"read",    no_argument,       0, 'r'},
        {0, 0, 0, 0}
 };
@@ -140,10 +141,14 @@ void usage(const char *self)
               "\t -i/--in       - configure GPIO as input\n"
               "\t -o/--out v    - configure GPIO as output with value v\n"
               "\t -r/--read v   - Read current GPIO value\n\n"
+              "\t -s/--sleep v  - Delay for v ms\n\n"
               "Examples: \n"
               "\t%s --gpio=1 --out 1\n"
-              "\t%s --gpio=0 --out 0 --gpio=1 --in\n"
-              "\n", self, self, self);
+              "\t%s --gpio=0 --out 0 --gpio=1 --in\n\n"
+              "All arguments are executed from left to right, you can add \n"
+              "delays using --sleep v option. e.g. \n"
+              "\t%s --gpio=0 --out 0 --sleep 1000 --gpio=0 --out 1\n"
+              "\n", self, self, self, self);
 }
 
 extern usb_dev_handle *nc_usb_open(int vendor, int product, char *vendor_name, char *product_name, char *serial);
@@ -177,7 +182,7 @@ int main(int argc, char* argv[])
        while(1) {
                int option_index = 0;
 
-               c = getopt_long (argc, argv, "hg:i:o:r:",
+               c = getopt_long (argc, argv, "hg:i:o:r:s:",
                                 long_options, &option_index);
 
                /* Detect the end of the options. */
@@ -211,6 +216,12 @@ int main(int argc, char* argv[])
                        gpio_out(h, gpio, v); 
                        break;
                }
+               case 's':
+               {
+                       unsigned long n = atoi(optarg);
+                       usleep(n*1000);
+                       break;
+               }
                case 'r': 
                {
                        check_handle(&h);