I improved the antenna status widget to also change antennas for bands. The protocol for this device has not been published, so I had to snoop on the RS-232 traffic to find out how to talk to it. Here is the new code:<\/p>\n\n\n\n
#include <stdio.h>\n#include <string.h>\n#include <stdlib.h>\n#include <fcntl.h>\n#include <unistd.h>\n#include <termios.h>\n#include <gtk\/gtk.h>\n\n\/\/ Define the antenna names\n#define ANTENNA1 \"6m beam\"\n#define ANTENNA2 \"WARC beam\"\n#define ANTENNA3 \"20-15-10 stack\"\n#define ANTENNA4 \"40m beam\"\n#define ANTENNA5 \"No antenna\"\n#define ANTENNA6 \"BOG NE\"\n#define ANTENNA7 \"BOG SW\"\n#define ANTENNA8 \"BOG NW\"\n#define ANTENNA9 \"BOG SE\"\n#define ANTENNA10 \"No antenna\"\n#define ANTENNA11 \"No antenna\"\n#define ANTENNA12 \"No antenna\"\n#define MAX_ANTENNAS 12\n\n\/\/ Device for BM5\n#define DEVICE \"\/dev\/serial\/by-id\/usb-FTDI_FT232R_USB_UART_B003ISA1-if00-port0\"\n\n\/\/ Update every 100 msec\n#define UPDATE 100\n\nchar *antennas[] = {ANTENNA1, ANTENNA2, ANTENNA3, ANTENNA4, ANTENNA5, ANTENNA6, \n ANTENNA7, ANTENNA8, ANTENNA9, ANTENNA10, ANTENNA11, ANTENNA12};\n\n#define MAX_SM 11\nchar *stack_match[] = {\"No antenna\", \"Top antenna\", \"Mid antenna\", \"Top+mid antennas\",\n \"Bottom antenna\", \"Top+bot antennas\", \"Mid+bot antennas\",\n \"All antennas\", \"AUX\", \"Unknown\", \"Phase\"}; \n\n\/*\n * RX antenna control:\n *\n * BOG NE = antenna 6 (no antenna; no relays selected)\n * BOG SW = antenna 7 (select relay 9)\n * BOG NW = antenna 8 (select relay 10)\n * BOG SE = antenna 9 (select relay 11)\n *\n * BOG selected for can be selected for 160, 80, 75, and 60. TX antenna is unaffected (radio -> acom -> inv L)\n *\n * Numbers below (6, 7, 8, 9) refer to antenna numbers defined in bandmaster V. Bands 40 - 6m are always\n * unchanged. Remember bandmaster uses hexadecimal everywhere.\n *\n *\/\nchar *bogs[] = {\"[R29T09H060606060402030203020301]\\r\", \"[R29T09H070707070402030203020301]\\r\",\n \"[R29T09H080808080402030203020301]\\r\", \"[R29T09H090909090402030203020301]\\r\"};\n\nint fd, tx_on = 0;\nGtkWidget *ant, *sm;\n\nstruct packet {\n unsigned char cmd;\n unsigned char dst;\n unsigned char src;\n unsigned char channel;\n int len;\n unsigned char data[256];\n};\n\nint read_untilcr(int fd, char *buf, int maxlen) {\n \n int pos = 0, bytes_rd;\n \n while(1) {\n if((bytes_rd = read(fd, buf + pos, 1)) < 0) return -1;\n if(bytes_rd == 0) {\n sleep(1); \/\/ could be less than 1sec\n continue;\n }\n if(!pos && (*buf == '\\r' || *buf == '\\n')) continue;\n if(pos == maxlen) return -1;\n if(buf[pos] == '\\r') break;\n pos++;\n }\n buf[pos] = '\\0';\n return pos;\n}\n\nint parse_packet(char *str, struct packet *packet) {\n \n memset((void *) packet, 0, sizeof(struct packet));\n if(sscanf(str, \"[T%2xR%2x%2xH%2xM%[^]]\", &(packet->cmd), &(packet->dst), &(packet->src), &(packet->channel), &(packet->data)) != 5) return -1;\n return 0;\n}\n\nvoid set_tty() {\n \n struct termios param;\n \n if(tcgetattr(fd, ¶m) < 0) {\n fprintf(stderr, \"Status get failed.\\n\");\n exit(1);\n }\n \n param.c_cflag &= ~PARENB;\n param.c_cflag &= ~CSTOPB;\n param.c_cflag |= CS8;\n param.c_cflag &= ~CRTSCTS;\n param.c_cflag |= CREAD | CLOCAL;\n param.c_lflag &= ~ICANON;\n param.c_lflag &= ~ECHO;\n param.c_lflag &= ~ECHOE;\n param.c_lflag &= ~ECHONL;\n param.c_lflag &= ~ISIG;\n param.c_iflag &= ~(IXON | IXOFF | IXANY);\n param.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL); \n param.c_oflag &= ~OPOST;\n param.c_oflag &= ~ONLCR;\n cfsetispeed(¶m, B57600);\n cfsetospeed(¶m, B57600);\n \n if(tcsetattr(fd, TCSANOW, ¶m) < 0) {\n fprintf(stderr, \"Status set failed.\\n\");\n exit(1);\n }\n}\n\nstatic gboolean update_band_info(void *asd) {\n \n int len, antenna, relay;\n struct packet packet;\n char buf[512];\n \n if((len = read_untilcr(fd, buf, sizeof(buf))) < 0) {\n fprintf(stderr, \"Read error.\\n\");\n exit(1);\n }\n \n if(parse_packet(buf, &packet) < 0) {\n printf(\"Incomplete packet -- skipping.\\n\");\n return 1;\n }\n \n switch(packet.cmd) {\n case 0xc4: \/\/ C4 = Bandmaster 5 status\n if(sscanf(packet.data, \"%2x01EEEEEEEEEEEE%4x\", &antenna, &relay) != 2) {\n printf(\"Error extracting antenna & relay information.\");\n antenna = 99;\n }\n if(antenna > 0 && antenna < MAX_ANTENNAS)\n sprintf(buf, \"<span color='blue'>%s (relays = %x)<\/span>\", antennas[antenna-1], relay);\n else\n sprintf(buf, \"<span color='red'>Unknown<\/span>\");\n gtk_label_set_markup(GTK_LABEL(ant), buf);\n break;\n case 0x45: \/\/ Stack match\n sscanf(packet.data, \"%2x\", &antenna);\n if(antenna >= 128) {\n antenna -= 128; \/\/ transmitting\n tx_on = 1;\n } else tx_on = 0;\n if(antenna >= 0 && antenna < MAX_SM)\n sprintf(buf, \"<span color='blue'>%s (%s)<\/span>\", stack_match[antenna], tx_on?\"TX\":\"RX\");\n else\n strcpy(buf, \"<span color='red'>Unknown state<\/span>\");\n gtk_label_set_markup(GTK_LABEL(sm), buf);\n break;\n case 0x13: \/\/ decoder data\n printf(\"Decoder data ignored.\\n\");\n break;\n default:\n printf(\"Unknown packet (%x) - ignored.\\n\", packet.cmd);\n }\n return 1;\n}\n\nvoid closewin(GtkWidget *win, gpointer data) {\n\n gtk_main_quit();\n}\n\nvoid bog_ne(GtkWidget *win, gpointer data) {\n\n if(!tx_on) {\n printf(\"BOG NE selected\\n\");\n write(fd, bogs[0], strlen(bogs[0]));\n }\n}\n\nvoid bog_sw(GtkWidget *win, gpointer data) {\n\n if(!tx_on) {\n printf(\"BOG SW selected\\n\");\n write(fd, bogs[1], strlen(bogs[1]));\n }\n}\n\nvoid bog_nw(GtkWidget *win, gpointer data) {\n\n if(!tx_on) {\n printf(\"BOG NW selected\\n\");\n write(fd, bogs[2], strlen(bogs[2]));\n }\n}\n\nvoid bog_se(GtkWidget *win, gpointer data) {\n\n if(!tx_on) {\n printf(\"BOG SE selected\\n\");\n write(fd, bogs[3], strlen(bogs[3]));\n }\n}\n\nint main(int argc, char *argv[]) {\n\n GtkWidget *window;\n GtkWidget *ant_label, *sm_label, *hbox1, *hbox2, *hbox3, *vbox, *button1, *button2, *button3, *button4;\n\n gtk_init(&argc, &argv);\n window = gtk_window_new(GTK_WINDOW_TOPLEVEL);\n gtk_window_set_title(GTK_WINDOW(window), \"Antenna Status\");\n gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);\n gtk_window_set_default_size(GTK_WINDOW(window), 350, 80);\n g_signal_connect(G_OBJECT(window), \"destroy\", G_CALLBACK(closewin), NULL);\n\n ant_label = gtk_label_new(\"Antenna:\");\n gtk_label_set_xalign(GTK_LABEL(ant_label), 0.0); \/\/ 0 = left, 1 = right\n sm_label = gtk_label_new(\"Stack match:\");\n gtk_label_set_xalign(GTK_LABEL(sm_label), 0.0);\n ant = gtk_label_new(\"-----\");\n gtk_label_set_xalign(GTK_LABEL(ant), 0.5);\n sm = gtk_label_new(\"-----\");\n gtk_label_set_xalign(GTK_LABEL(sm), 0.5);\n\n hbox1 = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 2);\n hbox2 = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 2);\n hbox3 = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 2);\n \n vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 2);\n\n gtk_box_pack_start(GTK_BOX(hbox1), ant_label, TRUE, TRUE, 5);\n gtk_box_pack_start(GTK_BOX(hbox1), ant, TRUE, TRUE, 5);\n\n gtk_box_pack_start(GTK_BOX(hbox2), sm_label, TRUE, TRUE, 5);\n gtk_box_pack_start(GTK_BOX(hbox2), sm, TRUE, TRUE, 5);\n\n gtk_box_pack_start(GTK_BOX(vbox), hbox1, TRUE, TRUE, 5);\n gtk_box_pack_start(GTK_BOX(vbox), hbox2, TRUE, TRUE, 5);\n\n button1 = gtk_button_new_with_label(\"BOG NE\");\n button2 = gtk_button_new_with_label(\"BOG SW\");\n button3 = gtk_button_new_with_label(\"BOG NW\");\n button4 = gtk_button_new_with_label(\"BOG SE\");\n gtk_box_pack_start(GTK_BOX(hbox3), button1, TRUE, TRUE, 5);\n gtk_box_pack_start(GTK_BOX(hbox3), button2, TRUE, TRUE, 5);\n gtk_box_pack_start(GTK_BOX(hbox3), button3, TRUE, TRUE, 5);\n gtk_box_pack_start(GTK_BOX(hbox3), button4, TRUE, TRUE, 5);\n\n gtk_box_pack_start(GTK_BOX(vbox), hbox3, TRUE, TRUE, 5);\n\n gtk_container_add(GTK_CONTAINER(window), vbox);\n g_signal_connect(button1, \"clicked\", G_CALLBACK(bog_ne), NULL);\n g_signal_connect(button2, \"clicked\", G_CALLBACK(bog_sw), NULL);\n g_signal_connect(button3, \"clicked\", G_CALLBACK(bog_nw), NULL);\n g_signal_connect(button4, \"clicked\", G_CALLBACK(bog_se), NULL);\n\n if((fd = open(DEVICE, O_RDWR)) < 0) {\n fprintf(stderr, \"Can't open device.\\n\");\n exit(1);\n }\n set_tty();\n\n bog_ne(NULL, NULL); \/\/ BOG NE is the default on start up\n\n g_timeout_add(UPDATE, update_band_info, NULL);\n\n gtk_widget_show_all(window);\n gtk_main();\n\n close(fd);\n return 0;\n}<\/code><\/pre>\n\n\n\nIn addition to performing automatic antenna switching for my tower (40 m – 6 m), it now can switch between four receive antennas for 160 m – 60m. You probably guessed that these are four BOGs oriented NE, SW, NW, SE.<\/p>\n\n\n\n
The previously described ft8cmp code and the above code are now both on github.com:<\/p>\n\n\n\n
https:\/\/github.com\/jmeloranta\/ft8cmp.git\n<\/a>https:\/\/github.com\/jmeloranta\/antenna-widget.git<\/a><\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"I improved the antenna status widget to also change antennas for bands. The protocol for this device has not been published, so I had to snoop on the RS-232 traffic to find out how to talk to it. Here is the new code: In addition to performing automatic antenna switching for my tower (40 m […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-135","post","type-post","status-publish","format-standard","hentry","category-ham_radio"],"_links":{"self":[{"href":"http:\/\/aa6kj.hopto.org\/wp\/index.php?rest_route=\/wp\/v2\/posts\/135","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/aa6kj.hopto.org\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/aa6kj.hopto.org\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/aa6kj.hopto.org\/wp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/aa6kj.hopto.org\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=135"}],"version-history":[{"count":4,"href":"http:\/\/aa6kj.hopto.org\/wp\/index.php?rest_route=\/wp\/v2\/posts\/135\/revisions"}],"predecessor-version":[{"id":140,"href":"http:\/\/aa6kj.hopto.org\/wp\/index.php?rest_route=\/wp\/v2\/posts\/135\/revisions\/140"}],"wp:attachment":[{"href":"http:\/\/aa6kj.hopto.org\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=135"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/aa6kj.hopto.org\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=135"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/aa6kj.hopto.org\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=135"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}