add -R as workaround for Raspberry Pi

diff --git a/hmland.c b/hmland.c
index eaf852154aad51d7859d93e128fba70b61967b3d..15b46ab7a5c4b0dbfd2404a55fd2f14b393c95ea 100644 (file)
--- a/hmland.c
+++ b/hmland.c
@@ -55,6 +55,7 @@ static int verbose = 0;
 #define        FLAG_COMMA_AFTER        (1<<3)
 #define        FLAG_NL                 (1<<4)
 #define        FLAG_IGNORE_COMMAS      (1<<5)
+#define        FLAG_PERIODIC_WAKEUP    (1<<6)
 
 #define CHECK_SPACE(x)         if ((*outpos + x) > outend) { fprintf(stderr, "Not enough space!\n"); return 0; }
 #define CHECK_AVAIL(x)         if ((*inpos + x) > inend) { fprintf(stderr, "Not enough input available!\n"); return 0; }
@@ -324,9 +325,11 @@ static int hmlan_parse_in(int fd, void *data)
        return 1;
 }
 
-static int comm(int fd_in, int fd_out, int master_socket)
+static int comm(int fd_in, int fd_out, int master_socket, int flags)
 {
        struct hmcfgusb_dev *dev;
+       uint8_t out[0x40]; //FIXME!!!
+       int poll_timeout = 3600;
        int quit = 0;
 
        hmcfgusb_set_debug(debug);
@@ -351,12 +354,17 @@ static int comm(int fd_in, int fd_out, int master_socket)
                }
        }
 
-       hmcfgusb_send(dev, (unsigned char*)"K", 1, 1);
+       if (flags & FLAG_PERIODIC_WAKEUP)
+               poll_timeout = 1;
+
+       memset(out, 0, sizeof(out));
+       out[0] = 'K';
+       hmcfgusb_send(dev, out, sizeof(out), 1);
 
        while(!quit) {
                int fd;
 
-               fd = hmcfgusb_poll(dev, 3600);
+               fd = hmcfgusb_poll(dev, poll_timeout);
                if (fd >= 0) {
                        if (fd == master_socket) {
                                int client;
@@ -375,6 +383,9 @@ static int comm(int fd_in, int fd_out, int master_socket)
                        if (errno) {
                                perror("hmcfgusb_poll");
                                quit = 1;
+                       } else {
+                               /* periodically wakeup the device */
+                               hmcfgusb_send_null_frame(dev);
                        }
                }
        }
@@ -535,7 +546,7 @@ static int socket_server(char *iface, int port, int flags)
                                        (client_addr & 0x000000ff));
                }
 
-               comm(client, client, sock);
+               comm(client, client, sock, flags);
 
                shutdown(client, SHUT_RDWR);
                close(client);
@@ -553,9 +564,9 @@ static int socket_server(char *iface, int port, int flags)
        return EXIT_SUCCESS;
 }
 
-static int interactive_server(void)
+static int interactive_server(int flags)
 {
-       if (!comm(STDIN_FILENO, STDOUT_FILENO, -1))
+       if (!comm(STDIN_FILENO, STDOUT_FILENO, -1, flags))
                return EXIT_FAILURE;
 
        return EXIT_SUCCESS;
@@ -572,6 +583,7 @@ void hmlan_syntax(char *prog)
        fprintf(stderr, "\t-l ip\tlisten on given IP address only (for example 127.0.0.1)\n");
        fprintf(stderr, "\t-P\tcreate PID file " PID_FILE " in daemon mode\n");
        fprintf(stderr, "\t-p n\tlisten on port n (default 1000)\n");
+       fprintf(stderr, "\t-R\twakeup the device (and USB-bus) every second (fix for e.g. Raspberry Pi)\n");
        fprintf(stderr, "\t-v\tverbose mode\n");
 
 }
@@ -585,7 +597,7 @@ int main(int argc, char **argv)
        char *ep;
        int opt;
 
-       while((opt = getopt(argc, argv, "DdhiPp:l:v")) != -1) {
+       while((opt = getopt(argc, argv, "DdhiPp:Rl:v")) != -1) {
                switch (opt) {
                        case 'D':
                                debug = 1;
@@ -607,6 +619,9 @@ int main(int argc, char **argv)
                                        exit(EXIT_FAILURE);
                                }
                                break;
+                       case 'R':
+                               flags |= FLAG_PERIODIC_WAKEUP;
+                               break;
                        case 'l':
                                iface = optarg;
                                break;
@@ -624,7 +639,7 @@ int main(int argc, char **argv)
        }
        
        if (interactive) {
-               return interactive_server();
+               return interactive_server(flags);
        } else {
                return socket_server(iface, port, flags);
        }