FreeCalypso > hg > freecalypso-tools
view loadtools/initscript.c @ 497:74610c4f10f7
target-utils: added 10 ms delay at the end of abb_power_off()
The deosmification of the ABB access code (replacement of osmo_delay_ms()
bogus delays with correctly-timed ones, which are significantly shorter)
had one annoying side effect: when executing the poweroff command from
any of the programs, one last '=' prompt character was being sent (and
received by the x86 host) as the Calypso board powers off. With delays
being shorter now, the abb_power_off() function was returning and the
standalone program's main loop was printing its prompt before the Iota chip
fully executed the switch-off sequence!
I thought about inserting an endless tight loop at the end of the
abb_power_off() function, but the implemented solution of a 10 ms delay
is a little nicer IMO because if the DEVOFF operation doesn't happen for
some reason in a manual hacking scenario, there won't be an artificial
blocker in the form of a tight loop keeping us from further poking around.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sat, 25 May 2019 20:44:05 +0000 |
parents | e7502631a0f9 |
children |
line wrap: on
line source
/* * This module has been copied from ltscript.c, ltdispatch.c and ltpassthru.c: * here we implement the init-script functionality for fc-xram. */ #include <sys/param.h> #include <stdio.h> #include <string.h> #include <strings.h> #include <stdlib.h> extern char default_helpers_dir[]; extern int cmd_baud(); static loadagent_cmd(argc, argv) char **argv; { if (tpinterf_make_cmd(argv) < 0) { fprintf(stderr, "error: unable to form target command\n"); return(-1); } if (tpinterf_send_cmd() < 0) return(-1); return tpinterf_pass_output(1); } static struct cmdtab { char *cmd; int minargs; int maxargs; int (*func)(); } cmdtab[] = { {"baud", 1, 1, cmd_baud}, {"w8", 2, 2, loadagent_cmd}, {"w16", 2, 2, loadagent_cmd}, {"w32", 2, 2, loadagent_cmd}, {0, 0, 0, 0} }; static dispatch_cmd(cmd) char *cmd; { char *argv[10]; char *cp, **ap; struct cmdtab *tp; for (cp = cmd; isspace(*cp); cp++) ; if (!*cp || *cp == '#') return(0); printf("init-script command: %s\n", cp); argv[0] = cp; while (*cp && !isspace(*cp)) cp++; if (*cp) *cp++ = '\0'; for (tp = cmdtab; tp->cmd; tp++) if (!strcmp(tp->cmd, argv[0])) break; if (!tp->func) { fprintf(stderr, "error: no such command\n"); return(-1); } for (ap = argv + 1; ; ) { while (isspace(*cp)) cp++; if (!*cp || *cp == '#') break; if (ap - argv - 1 >= tp->maxargs) { fprintf(stderr, "error: too many arguments\n"); return(-1); } *ap++ = cp; while (*cp && !isspace(*cp)) cp++; if (*cp) *cp++ = '\0'; } if (ap - argv - 1 < tp->minargs) { fprintf(stderr, "error: too few arguments\n"); return(-1); } *ap = 0; return tp->func(ap - argv, argv); } exec_init_script(script_name) char *script_name; { char pathbuf[MAXPATHLEN], *openfname; FILE *f; char linebuf[512], *cp; int lineno, retval = 0; if (index(script_name, '/')) openfname = script_name; else { sprintf(pathbuf, "%s/%s", default_helpers_dir, script_name); openfname = pathbuf; } f = fopen(openfname, "r"); if (!f) { perror(openfname); return(-1); } for (lineno = 1; fgets(linebuf, sizeof linebuf, f); lineno++) { cp = index(linebuf, '\n'); if (!cp) { fprintf(stderr, "%s line %d: missing newline\n", openfname, lineno); fclose(f); return(-1); } *cp = '\0'; retval = dispatch_cmd(linebuf); if (retval) break; } fclose(f); return(retval); }