FreeCalypso > hg > freecalypso-tools
view loadtools/tpinterf2.c @ 995:74024eb17e04
fc-loadtool help: improve language regarding 16 MiB flash chips
In FC project history, 16 MiB flash originally meant Pirelli DP-L10.
Then we got FCDEV3B with the same flash (our own design), but now we are
discovering more Calypso devices that used such large flash, both late
Calypso era (Sony Ericsson K2x0) as well as much earlier ones (FIC FLUID
devices.txt file with 2004 dates, Leonardo+ rev 5). Hence we need to
migrate to more generic or neutral language in associated documentation,
without giving elevated status to specific examples that drove our
early project history.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sun, 03 Dec 2023 21:11:12 +0000 |
parents | 8d7dcfd9df53 |
children |
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/* * This module provides a more advanced target interface function * than tpinterf.c - programmatic capture of target responses. * It is linked by some of our programs, but not all. */ #include <sys/types.h> #include <sys/time.h> #include <sys/errno.h> #include <stdio.h> #include <string.h> #include <strings.h> #include <stdlib.h> #include <unistd.h> extern int errno; extern int target_fd; /* * This functions reads the serial output from the target until a * '=' prompt is received. All intermediate output is parsed into * lines and passed to a callback function. * * The callback function is called with a pointer to each received * line, stored in a buffer ending in NUL, with CRLF stripped. * The callback function is expected to return an int. If the * callback return value is negative, this function returns immediately * with that negative value. If the callback return value is positive * or zero, it is added to an accumulator. * * Termination: this function returns when it has received a '=' at * the beginning of a line (return value is the callback return * accumulator, or 0 if no lines came), if the callback returns a * negative value (that value is returned), or if an error is detected * within this function (return value -1, and an error message * printed on stderr). */ tpinterf_capture_output(timeout, callback) int timeout; /* seconds */ int (*callback)(); { char buf[512], *cp; char line[1024], *dp = line; fd_set fds; struct timeval tv; int cc, linelen = 0; int totout = 0, cbret; for (;;) { FD_ZERO(&fds); FD_SET(target_fd, &fds); tv.tv_sec = timeout; tv.tv_usec = 0; cc = select(target_fd+1, &fds, NULL, NULL, &tv); if (cc < 0) { if (errno == EINTR) continue; perror("select"); return(-1); } if (cc < 1) { fprintf(stderr, "error: timeout waiting for \'=\' prompt from target\n"); return(-1); } cc = read(target_fd, buf, sizeof buf); if (cc <= 0) { perror("read after successful select"); return(-1); } for (cp = buf; cc; cp++) { cc--; if (*cp == '=' && !linelen && !cc) return(totout); if (*cp == '\r') continue; if (*cp == '\n') { *dp = '\0'; cbret = callback(line); if (cbret < 0) return(cbret); totout += cbret; dp = line; linelen = 0; continue; } *dp++ = *cp; linelen++; if (linelen >= sizeof line) { fprintf(stderr, "error: target response line length exceeds buffer\n"); return(-1); } } } } /* single line response capture mechanism */ /* same line buffer size as in tpinterf_capture_output() */ char target_response_line[1024]; static oneline_catcher(linein) char *linein; { strcpy(target_response_line, linein); return(1); } tpinterf_capture_output_oneline(timeout) { return tpinterf_capture_output(timeout, oneline_catcher); }