FreeCalypso > hg > freecalypso-tools
view rvinterf/asyncshell/at.c @ 619:f82551c77e58
libserial-newlnx: ASYNC_LOW_LATENCY patch reverted
Reports from Das Signal indicate that loadtools performance on Debian
is about the same as on Slackware, and that including or omitting the
ASYNC_LOW_LATENCY patch from Serg makes no difference. Because the
patch in question does not appear to be necessary, it is being reverted
until and unless someone other than Serg reports an actual real-world
system on which loadtools operation times are slowed compared to the
Mother's Slackware reference and on which Slackware-like performance
can be restored by setting the ASYNC_LOW_LATENCY flag.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Thu, 27 Feb 2020 01:09:48 +0000 |
parents | 10f4062e049b |
children |
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/* * Functions for the AT-over-RVTMUX interface */ #include <sys/types.h> #include <sys/errno.h> #include <stdio.h> #include <ctype.h> #include <string.h> #include <strings.h> #include <stdlib.h> #include <unistd.h> #include "pktmux.h" #include "limits.h" #include "exitcodes.h" extern char *rvinterf_ttyport; extern u_char rvi_msg[]; extern int rvi_msg_len; extern int oneshot_nowait; extern int sock; send_string_to_ati(str) char *str; { unsigned len; u_char sendpkt[MAX_PKT_TO_TARGET+1]; len = strlen(str); if (len + 1 > MAX_PKT_TO_TARGET) { printf("error: max pkt to target limit exceeded\n"); return(ERROR_USAGE); } /* fill out the packet */ sendpkt[0] = RVT_AT_HEADER; strcpy(sendpkt + 1, str); /* send it! */ send_pkt_to_target(sendpkt, len + 1); return(0); } send_unterm_string_to_ati(str) char *str; { unsigned len; u_char sendpkt[MAX_PKT_TO_TARGET+1]; len = strlen(str); if (len + 2 > MAX_PKT_TO_TARGET) { printf("error: max pkt to target limit exceeded\n"); return(ERROR_USAGE); } /* fill out the packet */ sendpkt[0] = RVT_AT_HEADER; sendpkt[1] = 0x01; strcpy(sendpkt + 2, str); /* send it! */ send_pkt_to_target(sendpkt, len + 2); return(0); } void cmd_sendat(arg) char *arg; { while (isspace(*arg)) arg++; if (!*arg) { printf("error: missing string argument\n"); return; } ati_rx_control(1); send_string_to_ati(arg); } void cmd_unterm(arg) char *arg; { while (isspace(*arg)) arg++; if (!*arg) { printf("error: missing string argument\n"); return; } ati_rx_control(1); send_unterm_string_to_ati(arg); } oneshot_at_command(cmd) char *cmd; { fd_set fds; int rc; if (!oneshot_nowait) { if (rvinterf_ttyport) usleep(30000); init(); /* to catch the response properly */ ati_rx_control(1); } rc = send_string_to_ati(cmd); if (rc) exit(rc); if (oneshot_nowait) exit(0); /* wait for response */ for (;;) { FD_ZERO(&fds); FD_SET(sock, &fds); rc = select(sock+1, &fds, 0, 0, 0); if (rc < 0) { if (errno == EINTR) continue; perror("select"); exit(ERROR_UNIX); } if (FD_ISSET(sock, &fds)) handle_rvinterf_input(); } } cmd_str_oneshot(argc, argv) char **argv; { return oneshot_at_command(argv[1]); } cmd_unterm_oneshot(argc, argv) char **argv; { return send_unterm_string_to_ati(argv[1]); } void oneshot_at_check_response() { if (rvi_msg_len == 4 && !strncmp(rvi_msg + 2, "OK", 2)) exit(0); if (rvi_msg_len == 4 && !strncmp(rvi_msg + 2, "> ", 2)) exit(0); if (rvi_msg_len == 7 && !strncmp(rvi_msg + 2, "ERROR", 5)) exit(ERROR_TARGET); if (rvi_msg_len == 6 && !strncmp(rvi_msg + 2, "BUSY", 4)) exit(ERROR_TARGET); if (rvi_msg_len == 12 && !strncmp(rvi_msg + 2, "NO CARRIER", 10)) exit(ERROR_TARGET); if (rvi_msg_len >= 12 && !strncmp(rvi_msg + 2, "+CME ERROR", 10)) exit(ERROR_TARGET); if (rvi_msg_len >= 12 && !strncmp(rvi_msg + 2, "+CMS ERROR", 10)) exit(ERROR_TARGET); }