FreeCalypso > hg > freecalypso-tools
view uptools/atcmd/smsend_cmgw.c @ 407:19e5a3e2f9c0
fcup-settime: moved time() retrieval a little closer to the output
A fundamental problem with all simple time transfer tools is that there is
always some delay between the time retrieval on the source system and that
transmitted time being set on the destination, and the resulting time
on the destination system is off by that delay amount. This delay cannot
be fully eliminated when working in a simple environment like ours,
but we should make our best effort to minimize it. In the present case,
moving the atinterf_init() call before the time() retrieval should make
a teensy-tiny improvement.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sat, 11 Aug 2018 21:52:17 +0000 |
parents | 89fe66cb60f6 |
children | dc2fd8e6f42c |
line wrap: on
line source
/* * The handling of +CMGW responses and send-after-write for fcup-smsend * family is implemented here. */ #include <sys/types.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include "../../rvinterf/include/exitcodes.h" #include "resp_parse.h" extern char at_response[]; extern int sms_write_mode; struct saw_rec { unsigned msgid; struct saw_rec *next; }; struct saw_rec *sendafterwr_head, **sendafterwr_tail = &sendafterwr_head; add_sendafterwr_record(msgid) unsigned msgid; { struct saw_rec *rec; rec = malloc(sizeof(struct saw_rec)); if (!rec) { perror("malloc for send-after-write record"); exit(ERROR_UNIX); } rec->msgid = msgid; rec->next = 0; *sendafterwr_tail = rec; sendafterwr_tail = &rec->next; } cmgw_callback() { struct resp_field fields[1]; int cc; /* skip empty lines */ if (!at_response[1]) return; /* if not empty, it MUST be +CMGW */ if (strncmp(at_response+1, "+CMGW: ", 7)) { fprintf(stderr, "error: response from target is not +CMGW\n"); exit(ERROR_TARGET); } if (sms_write_mode == 2) { puts(at_response+1); return; } if (parse_structured_response(at_response+8, fields, 1) != 1) { malformed: fprintf(stderr, "error: malformed +CMGW response\n"); exit(ERROR_TARGET); } if (fields[0].type != RESP_FIELD_NUMBER) goto malformed; add_sendafterwr_record(fields[0].num); } sendafterwr_process() { struct saw_rec *rec; char cmss_cmd[32]; if (!sendafterwr_head) { fprintf(stderr, "error: no +CMGW response received from target\n"); exit(ERROR_TARGET); } if (sendafterwr_head->next) atinterf_exec_cmd_needok("AT+CMMS=1", 0, 0); for (rec = sendafterwr_head; rec; rec = rec->next) { sprintf(cmss_cmd, "AT+CMSS=%u", rec->msgid); atinterf_exec_cmd_needok(cmss_cmd, 0, 0); } if (sendafterwr_head->next) atinterf_exec_cmd_needok("AT+CMMS=0", 0, 0); }