?
一个完整的工程哪能少的了串口命令调试器，本文介绍移植linenoise串口调试器到ARM ， 源码：http://github.com/antirez/linenoise? ；linenoise 是git的大神编写的命令交互调试器，在windows中是用SecureCRT ，ptty等串口调试软件很方便的进行命令交互，其中最大的特色当然是命令补全（我也是看中命令补全功能才做此移植） 。
1、获取源码后需要对内部API进行修改 ，将其中关于 STDIN等相关命令注释不用 ，write、read等函数需要修改到 本地串口上；
下是我修改后的源码：
/* linenoise.c -- guerrilla line editing library against the idea that a
* line editing lib needs to be 20,000 lines of C code.
*
* You can find the latest source code at:
*
* http://github.com/antirez/linenoise
*
* Does a number of crazy assumptions that happen to be true in 99.9999% of
* the 2010 UNIX computers around.
*
* ------------------------------------------------------------------------
*
* Copyright (c) 2010-2016, Salvatore Sanfilippo <antirez at gmail dot com>
* Copyright (c) 2010-2013, Pieter Noordhuis <pcnoordhuis at gmail dot com>
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ------------------------------------------------------------------------
*
* References:
* - http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
* - http://www.3waylabs.com/nw/WWW/products/wizcon/vt220.html
*
* Todo list:
* - Filter bogus Ctrl+<char> combinations.
* - Win32 support
*
* Bloat:
* - History search like Ctrl+r in read_uartline?
*
* List of escape sequences used by this program, we do everything just
* with three sequences. In order to be so cheap we may have some
* flickering effect with some slow terminal, but the lesser sequences
* the more compatible.
*
* EL (Erase Line)
* Sequence: ESC [ n K
* Effect: if n is 0 or missing, clear from cursor to end of line
* Effect: if n is 1, clear from beginning of line to cursor
* Effect: if n is 2, clear entire line
*
* CUF (CUrsor Forward)
* Sequence: ESC [ n C
* Effect: moves cursor forward n chars
*
* CUB (CUrsor Backward)
* Sequence: ESC [ n D
* Effect: moves cursor backward n chars
*
* The following is used to get the terminal width if getting
* the width with the TIOCGWINSZ ioctl fails
*
* DSR (Device Status Report)
* Sequence: ESC [ 6 n
* Effect: reports the current cusor position as ESC [ n ; m R
* where n is the row and m is the column
*
* When multi line mode is enabled, we also use an additional escape
* sequence. However multi line editing is disabled by default.
*
* CUU (Cursor Up)
* Sequence: ESC [ n A
* Effect: moves cursor up of n chars.
*
* CUD (Cursor Down)
* Sequence: ESC [ n B
* Effect: moves cursor down of n chars.
*
* When linenoiseClearScreen() is called, two additional escape sequences
* are used in order to clear the screen and position the cursor at home
* position.
*
* CUP (Cursor position)
* Sequence: ESC [ H
* Effect: moves the cursor to upper left corner
*
* ED (Erase display)
* Sequence: ESC [ 2 J
* Effect: clear the whole screen
*
*/
#include <termios.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include "linenoise.h"
#include "esp_system.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#define LINENOISE_DEFAULT_HISTORY_MAX_LEN 10
#define LINENOISE_MAX_LINE 128
//static char *unsupported_term[] = {"dumb","cons25","emacs",NULL};
static linenoiseCompletionCallback *completionCallback = NULL;
static linenoiseHintsCallback *hintsCallback = NULL;
static linenoiseFreeHintsCallback *freeHintsCallback = NULL;
//static struct termios orig_termios; /* In order to restore at exit.*/
static int maskmode = 0; /* Show "***" instead of input. For passwords. */
//static int rawmode = 0; /* For atexit() function to check if restore is needed*/
static int mlmode = 0; /* Multi line mode. Default is single line. */
//static int atexit_registered = 0; /* Register atexit just 1 time. */
static int history_max_len = LINENOISE_DEFAULT_HISTORY_MAX_LEN;
static int history_len = 0;
static char **history = NULL;
//struct history
/* The linenoiseState structure represents the state during line editing.
* We pass this state to functions implementing specific editing
* functionalities. */
struct linenoiseState {
// int ifd; /* Terminal stdin file descriptor. */
int ofd; /* Terminal stdout file descriptor. */
char *buf; /* Edited line buffer. */
size_t buflen; /* Edited line buffer size. */
const char *prompt; /* Prompt to display. */
size_t plen; /* Prompt length. */
size_t pos; /* Current cursor position. */
size_t oldpos; /* Previous refresh cursor position. */
size_t len; /* Current edited line length. */
size_t cols; /* Number of columns in terminal. */
size_t maxrows; /* Maximum num of rows used so far (multiline mode) */
int history_index; /* The history index we are currently editing. */
};
enum KEY_ACTION{
KEY_NULL = 0, /* NULL */
CTRL_A = 1, /* Ctrl+a */
CTRL_B = 2, /* Ctrl-b */
CTRL_C = 3, /* Ctrl-c */
CTRL_D = 4, /* Ctrl-d */
CTRL_E = 5, /* Ctrl-e */
CTRL_F = 6, /* Ctrl-f */
CTRL_H = 8, /* Ctrl-h */
TAB = 9, /* Tab */
CTRL_K = 11, /* Ctrl+k */
CTRL_L = 12, /* Ctrl+l */
ENTER = 13, /* Enter */
CTRL_N = 14, /* Ctrl-n */
CTRL_P = 16, /* Ctrl-p */
CTRL_T = 20, /* Ctrl-t */
CTRL_U = 21, /* Ctrl+u */
CTRL_W = 23, /* Ctrl+w */
ESC = 27, /* Escape */
BACKSPACE = 127 /* Backspace */
};
//static void linenoiseAtExit(void);
int linenoiseHistoryAdd(const char *line);
static void refreshLine(struct linenoiseState *l);
/* Debugging macro. */
#if 0
FILE *lndebug_fp = NULL;
#define lndebug(...) \
do { \
if (lndebug_fp == NULL) { \
lndebug_fp = fopen("/tmp/lndebug.txt","a"); \
fprintf(lndebug_fp, \
"[%d %d %d] p: %d, rows: %d, rpos: %d, max: %d, oldmax: %d\n", \
(int)l->len,(int)l->pos,(int)l->oldpos,plen,rows,rpos, \
(int)l->maxrows,old_rows); \
} \
fprintf(lndebug_fp, ", " __VA_ARGS__); \
fflush(lndebug_fp); \
} while (0)
#else
#define lndebug(fmt, ...)
#endif
/* ======================= Low level terminal handling ====================== */
/*External interface to internal interface*/
Lowlevelterminal write_uart=NULL;
Lowlevelterminal read_uart=NULL;
read_timeout read_fcnt=NULL;
void linenoiseTerminal(Lowlevelterminal w ,Lowlevelterminal r)
{
write_uart =w;read_uart =r;
}
void linenoisefcnt(read_timeout fcnt)
{
read_fcnt =fcnt;
}
/* Enable "mask mode". When it is enabled, instead of the input that
* the user is typing, the terminal will just display a corresponding
* number of asterisks, like "****". This is useful for passwords and other
* secrets that should not be displayed. */
void linenoiseMaskModeEnable(void) {
maskmode = 1;
}
/* Disable mask mode. */
void linenoiseMaskModeDisable(void) {
maskmode = 0;
}
/* Set if to use or not the multi line mode. */
void linenoiseSetMultiLine(int ml) {
mlmode = ml;
}
#ifdef STDIN_FILENO
/* Return true if the terminal name is in the list of terminals we know are
* not able to understand basic escape sequences. */
static int isUnsupportedTerm(void) {
char *term = getenv("TERM");
int j;
if (term == NULL) return 0;
for (j = 0; unsupported_term[j]; j++)
if (!strcasecmp(term,unsupported_term[j])) return 1;
return 0;
}
/* Raw mode: 1960 magic shit. */
static int enableRawMode(int fd) {
struct termios raw;
if (!isatty(STDIN_FILENO)) goto fatal;
if (!atexit_registered) {
atexit(linenoiseAtExit);
atexit_registered = 1;
}
if (tcgetattr(fd,&orig_termios) == -1) goto fatal;
raw = orig_termios; /* modify the original mode */
/* input modes: no break, no CR to NL, no parity check, no strip char,
* no start/stop output control. */
raw.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
/* output modes - disable post processing */
raw.c_oflag &= ~(OPOST);
/* control modes - set 8 bit chars */
raw.c_cflag |= (CS8);
/* local modes - choing off, canonical off, no extended functions,
* no signal chars (^Z,^C) */
raw.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
/* control chars - set return condition: min number of bytes and timer.
* We want read_uart to return every single byte, without timeout. */
raw.c_cc[VMIN] = 1; raw.c_cc[VTIME] = 0; /* 1 byte, no timer */
/* put terminal in raw mode after flushing */
if (tcsetattr(fd,TCSAFLUSH,&raw) < 0) goto fatal;
rawmode = 1;
return 0;
fatal:
errno = ENOTTY;
return -1;
}
static void disableRawMode(int fd) {
/* Don't even check the return value as it's too late. */
if (rawmode && tcsetattr(fd,TCSAFLUSH,&orig_termios) != -1)
rawmode = 0;
}
#endif
/* Use the ESC [6n escape sequence to query the horizontal cursor position
* and return it. On error -1 is returned, on success the position of the
* cursor. */
static int getCursorPosition(int fd) {
char buf[32];
int cols, rows;
unsigned int i = 0;
// ESP_LOGE(TAG, "write_uart 1!");
/* Report cursor location */
if (write_uart(fd, "\x1b[6n", 4) != 4) return -1;
// ESP_LOGE(TAG, "write_uart 2!");
read_fcnt(fd,100); //10 tick delay
/* read_uart the response: ESC [ rows ; cols R */
while (i < sizeof(buf)-1) {
if (read_uart(fd,buf+i,1) != 1) break;
if (buf[i] == 'R') break;
i++;
vTaskDelay(10 / portTICK_PERIOD_MS);
}
buf[i] = '\0';
// ESP_LOGE(TAG, "write_uart 3!");
/* Parse it. */
if (buf[0] != ESC || buf[1] != '[') return -1;
if (sscanf(buf+2,"%d;%d",&rows,&cols) != 2) return -1;
// ESP_LOGE(TAG, "write_uart 4!");
return cols;
}
/* Try to get the number of columns in the current terminal, or assume 80
* if it fails. */
static int getColumns(int fd) {
// struct winsize ws;
// if (ioctl(1, TIOCGWINSZ, &ws) == -1 || ws.ws_col == 0) {
/* ioctl() failed. Try to query the terminal itself. */
int start, cols;
/* Get the initial position so we can restore it later. */
start = getCursorPosition(fd);
if (start == -1) goto failed;
// ESP_LOGE(TAG, "getCursorPosition!");
/* Go to right margin and get position. */
if (write_uart(fd,"\x1b[999C",6) != 6) goto failed;
cols = getCursorPosition(fd);
if (cols == -1) goto failed;
/* Restore position. */
if (cols > start) {
char seq[32];
snprintf(seq,32,"\x1b[%dD",cols-start);
if (write_uart(fd,seq,strlen(seq)) == -1) {
/* Can't recover... */
}
}
return cols;
// } else {
// return ws.ws_col;
// }
failed:
return 80;
}
/* Clear the screen. Used to handle ctrl+l */
void linenoiseClearScreen(int fd) {
if (write_uart(fd,"\x1b[H\x1b[2J",7) <= 0) {
/* nothing to do, just to avoid warning. */
}
}
/* Beep, used for completion when there is nothing to complete or when all
* the choices were alread_uarty shown. */
static void linenoiseBeep(int fd) {
write_uart(fd,"\x7",1);
// fprintf(stderr, "\x7");
// fflush(stderr);
}
/* ============================== Completion ================================ */
/* Free a list of completion option populated by linenoiseAddCompletion(). */
static void freeCompletions(linenoiseCompletions *lc) {
size_t i;
for (i = 0; i < lc->len; i++)
free(lc->cvec[i]);
if (lc->cvec != NULL)
free(lc->cvec);
}
/* This is an helper function for linenoiseEdit() and is called when the
* user types the <tab> key in order to complete the string currently in the
* input.
*
* The state of the editing is encapsulated into the pointed linenoiseState
* structure as described in the structure definition. */
static int completeLine(struct linenoiseState *ls) {
linenoiseCompletions lc = { 0, NULL };
int nread_uart, nwritten;
char c = 0;
completionCallback(ls->buf,&lc);
if (lc.len == 0) {
linenoiseBeep(ls->ofd);
} else {
size_t stop = 0, i = 0;
while(!stop) {
/* Show completion or original buffer */
if (i < lc.len) {
struct linenoiseState saved = *ls;
ls->len = ls->pos = strlen(lc.cvec[i]);
ls->buf = lc.cvec[i];
refreshLine(ls);
ls->len = saved.len;
ls->pos = saved.pos;
ls->buf = saved.buf;
} else {
refreshLine(ls);
}
read_fcnt(ls->ofd,0);//
nread_uart = read_uart(ls->ofd,&c,1);
if (nread_uart <= 0) {
freeCompletions(&lc);
return -1;
}
switch(c) {
case 9: /* tab */
i = (i+1) % (lc.len+1);
if (i == lc.len) linenoiseBeep(ls->ofd);
break;
case 27: /* escape */
/* Re-show original buffer */
if (i < lc.len) refreshLine(ls);
stop = 1;
break;
default:
/* Update buffer and return */
if (i < lc.len) {
nwritten = snprintf(ls->buf,ls->buflen,"%s",lc.cvec[i]);
ls->len = ls->pos = nwritten;
}
stop = 1;
break;
}
}
}
freeCompletions(&lc);
return c; /* Return last read_uart character */
}
/* Register a callback function to be called for tab-completion. */
void linenoiseSetCompletionCallback(linenoiseCompletionCallback *fn) {
completionCallback = fn;
}
/* Register a hits function to be called to show hits to the user at the
* right of the prompt. */
void linenoiseSetHintsCallback(linenoiseHintsCallback *fn) {
hintsCallback = fn;
}
/* Register a function to free the hints returned by the hints callback
* registered with linenoiseSetHintsCallback(). */
void linenoiseSetFreeHintsCallback(linenoiseFreeHintsCallback *fn) {
freeHintsCallback = fn;
}
/* This function is used by the callback function registered by the user
* in order to add completion options given the input string when the
* user typed <tab>. See the example.c source code for a very easy to
* understand example. */
void linenoiseAddCompletion(linenoiseCompletions *lc, const char *str) {
size_t len = strlen(str);
char *copy, **cvec;
copy = malloc(len+1);
if (copy == NULL) return;
memcpy(copy,str,len+1);
cvec = realloc(lc->cvec,sizeof(char*)*(lc->len+1));
if (cvec == NULL) {
free(copy);
return;
}
lc->cvec = cvec;
lc->cvec[lc->len++] = copy;
}
/* =========================== Line editing ================================= */
/* We define a very simple "append buffer" structure, that is an heap
* allocated string where we can append to. This is useful in order to
* write_uart all the escape sequences in a buffer and flush them to the standard
* output in a single call, to avoid flickering effects. */
struct abuf {
char *b;
int len;
};
static void abInit(struct abuf *ab) {
ab->b = NULL;
ab->len = 0;
}
static void abAppend(struct abuf *ab, const char *s, int len) {
char *new = (char*)realloc(ab->b,ab->len+len);
if (new == NULL) return;
memcpy(new+ab->len,s,len);
ab->b = new;
ab->len += len;
}
static void abFree(struct abuf *ab) {
free(ab->b);
}
/* Helper of refreshSingleLine() and refreshMultiLine() to show hints
* to the right of the prompt. */
void refreshShowHints(struct abuf *ab, struct linenoiseState *l, int plen) {
char seq[64];
if (hintsCallback && plen+l->len < l->cols) {
int color = -1, bold = 0;
char *hint = hintsCallback(l->buf,&color,&bold);
if (hint) {
int hintlen = strlen(hint);
int hintmaxlen = l->cols-(plen+l->len);
if (hintlen > hintmaxlen) hintlen = hintmaxlen;
if (bold == 1 && color == -1) color = 37;
if (color != -1 || bold != 0)
snprintf(seq,64,"\033[%d;%d;49m",bold,color);
else
seq[0] = '\0';
abAppend(ab,seq,strlen(seq));
abAppend(ab,hint,hintlen);
if (color != -1 || bold != 0)
abAppend(ab,"\033[0m",4);
/* Call the function to free the hint returned. */
if (freeHintsCallback) freeHintsCallback(hint);
}
}
}
/* Single line low level line refresh.
*
* Rewrite_uart the currently edited line accordingly to the buffer content,
* cursor position, and number of columns of the terminal. */
static void refreshSingleLine(struct linenoiseState *l) {
char seq[64];
size_t plen = strlen(l->prompt);
int fd = l->ofd;
char *buf = l->buf;
size_t len = l->len;
size_t pos = l->pos;
struct abuf ab;
while((plen+pos) >= l->cols) {
buf++;
len--;
pos--;
}
while (plen+len > l->cols) {
len--;
}
abInit(&ab);
/* Cursor to left edge */
snprintf(seq,64,"\r");
abAppend(&ab,seq,strlen(seq));
/* write_uart the prompt and the current buffer content */
abAppend(&ab,l->prompt,strlen(l->prompt));
if (maskmode == 1) {
while (len--) abAppend(&ab,"*",1);
} else {
abAppend(&ab,buf,len);
}
/* Show hits if any. */
refreshShowHints(&ab,l,plen);
/* Erase to right */
snprintf(seq,64,"\x1b[0K");
abAppend(&ab,seq,strlen(seq));
/* Move cursor to original position. */
snprintf(seq,64,"\r\x1b[%dC", (int)(pos+plen));
abAppend(&ab,seq,strlen(seq));
if (write_uart(fd,ab.b,ab.len) == -1) {} /* Can't recover from write_uart error. */
abFree(&ab);
}
/* Multi line low level line refresh.
*
* Rewrite_uart the currently edited line accordingly to the buffer content,
* cursor position, and number of columns of the terminal. */
static void refreshMultiLine(struct linenoiseState *l) {
char seq[64];
int plen = strlen(l->prompt);
int rows = (plen+l->len+l->cols-1)/l->cols; /* rows used by current buf. */
int rpos = (plen+l->oldpos+l->cols)/l->cols; /* cursor relative row. */
int rpos2; /* rpos after refresh. */
int col; /* colum position, zero-based. */
int old_rows = l->maxrows;
int fd = l->ofd, j;
struct abuf ab;
/* Update maxrows if needed. */
if (rows > (int)l->maxrows) l->maxrows = rows;
/* First step: clear all the lines used before. To do so start by
* going to the last row. */
abInit(&ab);
if (old_rows-rpos > 0) {
lndebug("go down %d", old_rows-rpos);
snprintf(seq,64,"\x1b[%dB", old_rows-rpos);
abAppend(&ab,seq,strlen(seq));
}
/* Now for every row clear it, go up. */
for (j = 0; j < old_rows-1; j++) {
lndebug("clear+up");
snprintf(seq,64,"\r\x1b[0K\x1b[1A");
abAppend(&ab,seq,strlen(seq));
}
/* Clean the top line. */
lndebug("clear");
snprintf(seq,64,"\r\x1b[0K");
abAppend(&ab,seq,strlen(seq));
/* write_uart the prompt and the current buffer content */
abAppend(&ab,l->prompt,strlen(l->prompt));
if (maskmode == 1) {
unsigned int i;
for (i = 0; i < l->len; i++) abAppend(&ab,"*",1);
} else {
abAppend(&ab,l->buf,l->len);
}
/* Show hits if any. */
refreshShowHints(&ab,l,plen);
/* If we are at the very end of the screen with our prompt, we need to
* emit a newline and move the prompt to the first column. */
if (l->pos &&
l->pos == l->len &&
(l->pos+plen) % l->cols == 0)
{
lndebug("<newline>");
abAppend(&ab,"\n",1);
snprintf(seq,64,"\r");
abAppend(&ab,seq,strlen(seq));
rows++;
if (rows > (int)l->maxrows) l->maxrows = rows;
}
/* Move cursor to right position. */
rpos2 = (plen+l->pos+l->cols)/l->cols; /* current cursor relative row. */
lndebug("rpos2 %d", rpos2);
/* Go up till we reach the expected positon. */
if (rows-rpos2 > 0) {
lndebug("go-up %d", rows-rpos2);
snprintf(seq,64,"\x1b[%dA", rows-rpos2);
abAppend(&ab,seq,strlen(seq));
}
/* Set column. */
col = (plen+(int)l->pos) % (int)l->cols;
lndebug("set col %d", 1+col);
if (col)
snprintf(seq,64,"\r\x1b[%dC", col);
else
snprintf(seq,64,"\r");
abAppend(&ab,seq,strlen(seq));
lndebug("\n");
l->oldpos = l->pos;
if (write_uart(fd,ab.b,ab.len) == -1) {} /* Can't recover from write_uart error. */
abFree(&ab);
}
/* Calls the two low level functions refreshSingleLine() or
* refreshMultiLine() according to the selected mode. */
static void refreshLine(struct linenoiseState *l) {
if (mlmode)
refreshMultiLine(l);
else
refreshSingleLine(l);
}
/* Insert the character 'c' at cursor current position.
*
* On error writing to the terminal -1 is returned, otherwise 0. */
int linenoiseEditInsert(struct linenoiseState *l, char c) {
if (l->len < l->buflen) {
if (l->len == l->pos) {
l->buf[l->pos] = c;
l->pos++;
l->len++;
l->buf[l->len] = '\0';
if ((!mlmode && l->plen+l->len < l->cols && !hintsCallback)) {
/* Avoid a full update of the line in the
* trivial case. */
char d = (maskmode==1) ? '*' : c;
if (write_uart(l->ofd,&d,1) == -1) return -1;
} else {
refreshLine(l);
}
} else {
memmove(l->buf+l->pos+1,l->buf+l->pos,l->len-l->pos);
l->buf[l->pos] = c;
l->len++;
l->pos++;
l->buf[l->len] = '\0';
refreshLine(l);
}
}
return 0;
}
/* Move cursor on the left. */
void linenoiseEditMoveLeft(struct linenoiseState *l) {
if (l->pos > 0) {
l->pos--;
refreshLine(l);
}
}
/* Move cursor on the right. */
void linenoiseEditMoveRight(struct linenoiseState *l) {
if (l->pos != l->len) {
l->pos++;
refreshLine(l);
}
}
/* Move cursor to the start of the line. */
void linenoiseEditMoveHome(struct linenoiseState *l) {
if (l->pos != 0) {
l->pos = 0;
refreshLine(l);
}
}
/* Move cursor to the end of the line. */
void linenoiseEditMoveEnd(struct linenoiseState *l) {
if (l->pos != l->len) {
l->pos = l->len;
refreshLine(l);
}
}
// static char * strdup(const char *s)
// {
// size_t len = strlen(s) +1;
// void *new = malloc(len);
// if (new == NULL)
// return NULL;
// return (char *)memcpy(new,s,len);
// }
/* Substitute the currently edited line with the next or previous history
* entry as specified by 'dir'. */
#define LINENOISE_HISTORY_NEXT 0
#define LINENOISE_HISTORY_PREV 1
void linenoiseEditHistoryNext(struct linenoiseState *l, int dir) {
if (history_len > 1) {
/* Update the current history entry before to
* overwrite_uart it with the next one. */
free(history[history_len - 1 - l->history_index]);
history[history_len - 1 - l->history_index] = strdup(l->buf);
/* Show the new entry */
l->history_index += (dir == LINENOISE_HISTORY_PREV) ? 1 : -1;
if (l->history_index < 0) {
l->history_index = 0;
return;
} else if (l->history_index >= history_len) {
l->history_index = history_len-1;
return;
}
strncpy(l->buf,history[history_len - 1 - l->history_index],l->buflen);
l->buf[l->buflen-1] = '\0';
l->len = l->pos = strlen(l->buf);
refreshLine(l);
}
}
/* Delete the character at the right of the cursor without altering the cursor
* position. Basically this is what happens with the "Delete" keyboard key. */
void linenoiseEditDelete(struct linenoiseState *l) {
if (l->len > 0 && l->pos < l->len) {
memmove(l->buf+l->pos,l->buf+l->pos+1,l->len-l->pos-1);
l->len--;
l->buf[l->len] = '\0';
refreshLine(l);
}
}
/* Backspace implementation. */
void linenoiseEditBackspace(struct linenoiseState *l) {
if (l->pos > 0 && l->len > 0) {
memmove(l->buf+l->pos-1,l->buf+l->pos,l->len-l->pos);
l->pos--;
l->len--;
l->buf[l->len] = '\0';
refreshLine(l);
}
}
/* Delete the previosu word, maintaining the cursor at the start of the
* current word. */
void linenoiseEditDeletePrevWord(struct linenoiseState *l) {
size_t old_pos = l->pos;
size_t diff;
while (l->pos > 0 && l->buf[l->pos-1] == ' ')
l->pos--;
while (l->pos > 0 && l->buf[l->pos-1] != ' ')
l->pos--;
diff = old_pos - l->pos;
memmove(l->buf+l->pos,l->buf+old_pos,l->len-old_pos+1);
l->len -= diff;
refreshLine(l);
}
/* This function is the core of the line editing capability of linenoise.
* It expects 'fd' to be alread_uarty in "raw mode" so that every key pressed
* will be returned ASAP to read_uart().
*
* The resulting string is put into 'buf' when the user type enter, or
* when ctrl+d is typed.
*
* The function returns the length of the current buffer. */
static int linenoiseEdit(int std_fd, char *buf, size_t buflen, const char *prompt)
{
struct linenoiseState l;
/* Populate the linenoise state that we pass to functions implementing
* specific editing functionalities. */
l.ofd = std_fd;
l.buf = buf;
l.buflen = buflen;
l.prompt = prompt;
l.plen = strlen(prompt);
l.oldpos = l.pos = 0;
l.len = 0;
l.cols = getColumns(std_fd);
l.maxrows = 0;
l.history_index = 0;
/* Buffer starts empty. */
l.buf[0] = '\0';
l.buflen--; /* Make sure there is always space for the nulterm */
/* The latest history entry is always our current buffer, that
* initially is just an empty string. */
linenoiseHistoryAdd("");
// ESP_LOGE(TAG, "linenoiseHistoryAdd!");
if (write_uart(l.ofd,(char*)prompt,l.plen) == -1) return -1;
// ESP_LOGE(TAG, "write_uart!");
while(1) {
int8_t c;
int nread_uart;
char seq[3];
read_fcnt(l.ofd,0);
vTaskDelay(10 / portTICK_PERIOD_MS);
nread_uart = read_uart(l.ofd,(char*)&c,1);
if (nread_uart <= 0) return l.len;
/* Only autocomplete when the callback is set. It returns < 0 when
* there was an error read_uarting from fd. Otherwise it will return the
* character that should be handled next. */
if (c == 9 && completionCallback != NULL) {
c = completeLine(&l);
/* Return on errors */
if (c < 0) return l.len;
/* read_uart next character when 0 */
if (c == 0) continue;
}
switch(c) {
case ENTER: /* enter */
history_len--;
free(history[history_len]);
if (mlmode) linenoiseEditMoveEnd(&l);
if (hintsCallback) {
/* Force a refresh without hints to leave the previous
* line as the user typed it after a newline. */
linenoiseHintsCallback *hc = hintsCallback;
hintsCallback = NULL;
refreshLine(&l);
hintsCallback = hc;
}
return (int)l.len;
case CTRL_C: /* ctrl-c */
errno =11;// EAGAIN;
return -1;
case BACKSPACE: /* backspace */
case 8: /* ctrl-h */
linenoiseEditBackspace(&l);
break;
case CTRL_D: /* ctrl-d, remove char at right of cursor, or if the
line is empty, act as end-of-file. */
if (l.len > 0) {
linenoiseEditDelete(&l);
} else {
history_len--;
free(history[history_len]);
return -1;
}
break;
case CTRL_T: /* ctrl-t, swaps current character with previous. */
if (l.pos > 0 && l.pos < l.len) {
int aux = buf[l.pos-1];
buf[l.pos-1] = buf[l.pos];
buf[l.pos] = aux;
if (l.pos != l.len-1) l.pos++;
refreshLine(&l);
}
break;
case CTRL_B: /* ctrl-b */
linenoiseEditMoveLeft(&l);
break;
case CTRL_F: /* ctrl-f */
linenoiseEditMoveRight(&l);
break;
case CTRL_P: /* ctrl-p */
linenoiseEditHistoryNext(&l, LINENOISE_HISTORY_PREV);
break;
case CTRL_N: /* ctrl-n */
linenoiseEditHistoryNext(&l, LINENOISE_HISTORY_NEXT);
break;
case ESC: /* escape sequence */
/* read_uart the next two bytes representing the escape sequence.
* Use two calls to handle slow terminals returning the two
* chars at different times. */
read_fcnt(l.ofd,0);
if (read_uart(l.ofd,seq,1) == -1) break;
if (read_uart(l.ofd,seq+1,1) == -1) break;
/* ESC [ sequences. */
if (seq[0] == '[') {
if (seq[1] >= '0' && seq[1] <= '9') {
/* Extended escape, read_uart additional byte. */
if (read_uart(l.ofd,seq+2,1) == -1) break;
if (seq[2] == '~') {
switch(seq[1]) {
case '3': /* Delete key. */
linenoiseEditDelete(&l);
break;
}
}
} else {
switch(seq[1]) {
case 'A': /* Up */
linenoiseEditHistoryNext(&l, LINENOISE_HISTORY_PREV);
break;
case 'B': /* Down */
linenoiseEditHistoryNext(&l, LINENOISE_HISTORY_NEXT);
break;
case 'C': /* Right */
linenoiseEditMoveRight(&l);
break;
case 'D': /* Left */
linenoiseEditMoveLeft(&l);
break;
case 'H': /* Home */
linenoiseEditMoveHome(&l);
break;
case 'F': /* End*/
linenoiseEditMoveEnd(&l);
break;
}
}
}
/* ESC O sequences. */
else if (seq[0] == 'O') {
switch(seq[1]) {
case 'H': /* Home */
linenoiseEditMoveHome(&l);
break;
case 'F': /* End*/
linenoiseEditMoveEnd(&l);
break;
}
}
break;
default:
if (linenoiseEditInsert(&l,c)) return -1;
break;
case CTRL_U: /* Ctrl+u, delete the whole line. */
buf[0] = '\0';
l.pos = l.len = 0;
refreshLine(&l);
break;
case CTRL_K: /* Ctrl+k, delete from current to end of line. */
buf[l.pos] = '\0';
l.len = l.pos;
refreshLine(&l);
break;
case CTRL_A: /* Ctrl+a, go to the start of the line */
linenoiseEditMoveHome(&l);
break;
case CTRL_E: /* ctrl+e, go to the end of the line */
linenoiseEditMoveEnd(&l);
break;
case CTRL_L: /* ctrl+l, clear screen */
linenoiseClearScreen(l.ofd);
refreshLine(&l);
break;
case CTRL_W: /* ctrl+w, delete previous word */
linenoiseEditDeletePrevWord(&l);
break;
}
}
// return l.len;
}
/* This special mode is used by linenoise in order to print scan codes
* on screen for debugging / development purposes. It is implemented
* by the linenoise_example program using the --keycodes option. */
void linenoisePrintKeyCodes(int fd) {
char quit[4];
// printf("Linenoise key codes debugging mode.\n"
// "Press keys to see scan codes. Type 'quit' at any time to exit.\n");
// if (enableRawMode(STDIN_FILENO) == -1) return;
memset(quit,' ',4);
while(1) {
char c;
int nread_uart;
read_fcnt(fd,10);
nread_uart = read_uart(fd,&c,1);
if (nread_uart <= 0) continue;
memmove(quit,quit+1,sizeof(quit)-1); /* shift string to left. */
quit[sizeof(quit)-1] = c; /* Insert current char on the right. */
if (memcmp(quit,"quit",sizeof(quit)) == 0) break;
// printf("'%c' %02x (%d) (type quit to exit)\n",
// isprint(c) ? c : '?', (int)c, (int)c);
// printf("\r"); /* Go left edge manually, we are in raw mode. */
// fflush(stdout);
}
// disableRawMode(STDIN_FILENO);
}
/* This function calls the line editing function linenoiseEdit() using
* the STDIN file descriptor set in raw mode. */
static int linenoiseRaw(int fd,char *buf, size_t buflen, const char *prompt) {
int count;
if (buflen == 0) {
errno = EINVAL;
return -1;
}
// if (enableRawMode(STDIN_FILENO) == -1) return -1;
count = linenoiseEdit(fd, buf, buflen, prompt);
// disableRawMode(STDIN_FILENO);
return count;
}
/* This function is called when linenoise() is called with the standard
* input file descriptor not attached to a TTY. So for example when the
* program using linenoise is called in pipe or with a file redirected
* to its standard input. In this case, we want to be able to return the
* line regardless of its length (by default we are limited to 4k). */
//static char *linenoiseNoTTY(void) {
// char *line = NULL;
// size_t len = 0, maxlen = 0;
// while(1) {
// if (len == maxlen) {
// if (maxlen == 0) maxlen = 16;
// maxlen *= 2;
// char *oldval = line;
// line = realloc(line,maxlen);
// if (line == NULL) {
// if (oldval) free(oldval);
// return NULL;
// }
// }
// int c = fgetc(stdin);
// if (c == EOF || c == '\n') {
// if (c == EOF && len == 0) {
// free(line);
// return NULL;
// } else {
// line[len] = '\0';
// return line;
// }
// } else {
// line[len] = c;
// len++;
// }
// }
//}
/* The high level function that is the main API of the linenoise library.
* This function checks if the terminal has basic capabilities, just checking
* for a blacklist of stupid terminals, and later either calls the line
* editing function or uses dummy fgets() so that you will be able to type
* something even in the most desperate of the conditions. */
char *linenoise(int fd,const char *prompt) {
char buf[LINENOISE_MAX_LINE];
int count;
// if (!isatty(STDIN_FILENO)) {
// /* Not a tty: read_uart from file / pipe. In this mode we don't want any
// * limit to the line size, so we call a function to handle that. */
// return linenoiseNoTTY();
// } else if (isUnsupportedTerm()) {
// size_t len;
// printf("%s",prompt);
// fflush(stdout);
// if (fgets(buf,LINENOISE_MAX_LINE,stdin) == NULL) return NULL;
// len = strlen(buf);
// while(len && (buf[len-1] == '\n' || buf[len-1] == '\r')) {
// len--;
// buf[len] = '\0';
// }
// return strdup(buf);
// } else
{
count = linenoiseRaw(fd,buf,LINENOISE_MAX_LINE,prompt);
if (count == -1) return NULL;
return strdup(buf);
}
}
/* This is just a wrapper the user may want to call in order to make sure
* the linenoise returned buffer is freed with the same allocator it was
* created with. Useful when the main program is using an alternative
* allocator. */
void linenoiseFree(void *ptr) {
free(ptr);
}
/* ================================ History ================================= */
/* Free the history, but does not reset it. Only used when we have to
* exit() to avoid memory leaks are reported by valgrind & co. */
//static void freeHistory(void) {
// if (history) {
// int j;
// for (j = 0; j < history_len; j++)
// free(history[j]);
// free(history);
// }
//}
/* At exit we'll try to fix the terminal to the initial conditions. */
//static void linenoiseAtExit(void) {
disableRawMode(STDIN_FILENO);
// freeHistory();
//}
/* This is the API call to add a new entry in the linenoise history.
* It uses a fixed array of char pointers that are shifted (memmoved)
* when the history max length is reached in order to remove the older
* entry and make room for the new one, so it is not exactly suitable for huge
* histories, but will work well for a few hundred of entries.
*
* Using a circular buffer is smarter, but a bit more complex to handle. */
int linenoiseHistoryAdd(const char *line) {
char *linecopy;
if (history_max_len == 0) return 0;
/* Initialization on first call. */
if (history == NULL) {
history = malloc(sizeof(char*)*history_max_len);
if (history == NULL) return 0;
memset(history,0,(sizeof(char*)*history_max_len));
}
/* Don't add duplicated lines. */
if (history_len && !strcmp(history[history_len-1], line)) return 0;
/* Add an heap allocated copy of the line in the history.
* If we reached the max length, remove the older line. */
linecopy = strdup(line);
if (!linecopy) return 0;
if (history_len == history_max_len) {
free(history[0]);
memmove(history,history+1,sizeof(char*)*(history_max_len-1));
history_len--;
}
history[history_len] = linecopy;
history_len++;
return 1;
}
/* Set the maximum length for the history. This function can be called even
* if there is alread_uarty some history, the function will make sure to retain
* just the latest 'len' elements if the new history length value is smaller
* than the amount of items alread_uarty inside the history. */
int linenoiseHistorySetMaxLen(int len) {
char **new;
if (len < 1) return 0;
if (history) {
int tocopy = history_len;
new = malloc(sizeof(char*)*len);
if (new == NULL) return 0;
/* If we can't copy everything, free the elements we'll not use. */
if (len < tocopy) {
int j;
for (j = 0; j < tocopy-len; j++) free(history[j]);
tocopy = len;
}
memset(new,0,sizeof(char*)*len);
memcpy(new,history+(history_len-tocopy), sizeof(char*)*tocopy);
free(history);
history = new;
}
history_max_len = len;
if (history_len > history_max_len)
history_len = history_max_len;
return 1;
}
/* Save the history in the specified file. On success 0 is returned
* otherwise -1 is returned. */
int linenoiseHistorySave(const char *filename) {
// mode_t old_umask = umask(S_IXUSR|S_IRWXG|S_IRWXO);
// FILE *fp;
// int j;
// fp = fopen(filename,"w");
// umask(old_umask);
// if (fp == NULL) return -1;
// chmod(filename,S_IRUSR|S_IWUSR);
// for (j = 0; j < history_len; j++)
// fprintf(fp,"%s\n",history[j]);
// fclose(fp);
return 0;
}
/* Load the history from the specified file. If the file does not exist
* zero is returned and no operation is performed.
*
* If the file exists and the operation succeeded 0 is returned, otherwise
* on error -1 is returned. */
int linenoiseHistoryLoad(const char *filename) {
// if(filename==NULL){ //use local SRAM
// /*A maximum of 5 histories can be saved*/
//
// }
// else{// use file
// FILE *fp = fopen(filename,"r");
// char buf[LINENOISE_MAX_LINE];
// if (fp == NULL) return -1;
// while (fgets(buf,LINENOISE_MAX_LINE,fp) != NULL) {
// char *p;
// p = strchr(buf,'\r');
// if (!p) p = strchr(buf,'\n');
// if (p) *p = '\0';
// linenoiseHistoryAdd(buf);
// }
// fclose(fp);
// }
return 0;
}
为了保持代码的低耦合性，新增了2个函数，外部初始化时需要对该两个函数进行初始化，否则可能运行死机；
typedef?int?(*?Lowlevelterminal)(int?,char?*?,int?);
typedef?void?(*read_timeout)(int?,unsigned?int?);
注册底层传输输入、输出 函数
void?linenoiseTerminal(Lowlevelterminal?w?,Lowlevelterminal?r);
注册 底层 串口读取等待超时时间；
void?linenoisefcnt(read_timeout?fcnt);
?
修改好linenoise 源码后，需要添加我们的命令了，命令包含自动补全功能 ；自动补全 提示 ；
这里新建一个cmd.h 文件
#ifndef _CMD_H_
#define _CMD_H_
#include "stdint.h"
#include "linenoise.h"
typedef int (* getch)(char * ,int ,unsigned short);
typedef int (* cprintf)(char const * ,...);
typedef int (* cput)(char * ,int);
typedef enum {
LocalSerial =0x0,
Network =0x1
} tty_type;
#define ARGC_SIZEMAX 32
struct tty
{
tty_type type;
char **argv;
int argc;
getch getc;
cprintf printf;
cput put;
void *vpt;
char flag;
int login_flag;
unsigned short timeout;
};
typedef int (* cmdhandle)(struct tty *ptty);
typedef struct _cmdt
{
char *name;
cmdhandle handle;
char *help_t;
char *help_f;
char *help_hint;
}cmdt;
typedef struct _cmdt_list
{
cmdt **pcmdt;
int cmdt_size;
}cmdt_list;
#define c_isblank(c) (c == ' ' || c == '\t')
cmdt_list *cmd_main_list(void);
int cmd_main_listlen(void);
int cmd_tty(char *cmdline,struct tty *ptty);
struct tty* open_tty(void);
int delete_tty(struct tty* ptty);
int tty_getstring(struct tty *ptty, char *buf, int buflen);
void completion(const char *buf, linenoiseCompletions *lc) ;
char *hints(const char *buf, int *color, int *bold);
int cwrite(int fd,char *c,int len);
int cread(int fd ,char *c,int len);
void cfcnt(int fd,unsigned int timetick);
#endif
?cmd.c 文件存放 命令结构体 ，命令补全； 命令解析等函数
#include <stdio.h>
#include "cmd.h"
#include "cmd_bspsys.h"
cmdt *main_help_cmdt[] =
{
&cmd_main_help,
};
cmdt *normal_cmdt[] =
{
&cmd_clear,
&cmd_bspCpuTask,
&cmd_reset,
};
cmdt_list main_cmdt_list[] =
{
{main_help_cmdt, sizeof(main_help_cmdt) / sizeof(main_help_cmdt[0])},
{normal_cmdt, sizeof(normal_cmdt) / sizeof(normal_cmdt[0])},
};
cmdt_list *cmd_main_list(void)
{
return main_cmdt_list;
}
int cmd_main_listlen(void)
{
return sizeof(main_cmdt_list) / sizeof(main_cmdt_list[0]);
}
int parse_line (char *line, char *argv[])
{
int nargs = 0;
while (nargs < ARGC_SIZEMAX) {
/* skip any white space */
while (c_isblank(*line))
++line;
if (*line == '\0') { /* end of line, no more args */
argv[nargs] = NULL;
return nargs;
}
argv[nargs++] = line; /* begin of argument string */
/* find end of string */
while (*line && !c_isblank(*line))
++line;
if (*line == '\0') { /* end of line, no more args */
argv[nargs] = NULL;
return nargs;
}
*line++ = '\0'; /* terminate current arg */
}
return nargs;
}
cmdhandle shell_find_cmd(struct tty *ptty, cmdt_list *pcmdt_list, int size)
{
int i, j;
for(i = 0; i < size; i++){
if(pcmdt_list[i].pcmdt == NULL) {
continue;
}
for(j = 0; j < pcmdt_list[i].cmdt_size; j++){
if(pcmdt_list[i].pcmdt[j]->name == NULL){
continue;
}
if(strcmp(pcmdt_list[i].pcmdt[j]->name, ptty->argv[0]) == 0){
return pcmdt_list[i].pcmdt[j]->handle;
}
}
}
return NULL;
}
int shell_run_cmd(struct tty * ptty, cmdhandle handle)
{
if (handle == NULL){
ptty->printf("Command undefined,try help\r\n");
return -1;
}else{
return handle(ptty);
}
}
int shell_run(struct tty *ptty)
{
cmdhandle handle;
handle = shell_find_cmd(ptty,
cmd_main_list(),
cmd_main_listlen());
return shell_run_cmd(ptty, handle);
}
#define USER_PASSWD "admin"
int cmd_tty(char *cmdline,struct tty *ptty)
{
int ret =-1;
ptty->argv = (char **) malloc(ARGC_SIZEMAX*sizeof(char *));
if(ptty->argv==NULL){
return ret;
}
ret =1;
ptty->argc =parse_line(cmdline,ptty->argv);
if(ptty->argc!=0){
if((ptty->login_flag&0x80)==0){
if ((strcmp(ptty->argv[0], USER_PASSWD) == 0)){
ptty->login_flag|=0x80;
ptty->printf("\033[2Apassword: **************************\r\n");
ptty->printf("password: **************************");
ptty->printf("\033[2J\033[0;0H \r\n");
}else{
ptty->login_flag++;
if((ptty->login_flag&0x7f)>=10){
ptty->printf("password retry >10 !\r\n");
ptty->login_flag=0;
ret =-2;
}
}
}
else if((strcmp(ptty->argv[0], "quit") == 0)
|| (strcmp(ptty->argv[0], "exit") == 0)){
ptty->login_flag=0;
ret =-2;
}else {
shell_run(ptty);
ret =0;
}
}
free(ptty->argv);
return ret;
}
struct tty* open_tty(void)
{
struct tty *ptty =malloc(sizeof(struct tty));
if(ptty!=NULL){
ptty->argc =0;
ptty->login_flag =0;
ptty->flag =0;
}
return ptty;
}
int delete_tty(struct tty* ptty)
{
free(ptty);
return 0;
}
void completion(const char *buf, linenoiseCompletions *lc) {
size_t len = strlen(buf);
if (len == 0) {
return;
}
cmdt **pcmdt;
int array_size;
int i, j;
int list_size =cmd_main_listlen();
cmdt_list *pcmdt_list =cmd_main_list();
for(i = 0; i < list_size; i++){
array_size = pcmdt_list[i].cmdt_size;
pcmdt = pcmdt_list[i].pcmdt;
for(j = 0; j < array_size; j++){
/* Check if command starts with buf */
if (strncmp(buf, pcmdt[j]->name, len) == 0) {
linenoiseAddCompletion(lc, pcmdt[j]->name);
}
}
}
}
char *hints(const char *buf, int *color, int *bold) {
size_t len = strlen(buf);
if (len == 0) {return NULL;}
cmdt **pcmdt;
int array_size;
int i, j;
int list_size =cmd_main_listlen();
cmdt_list *pcmdt_list =cmd_main_list();
for(i = 0; i < list_size; i++){
array_size = pcmdt_list[i].cmdt_size;
pcmdt = pcmdt_list[i].pcmdt;
for(j = 0; j < array_size; j++){
if (strlen(pcmdt[j]->name) == len &&
strncmp(buf, pcmdt[j]->name, len) == 0) {
*color = 35;
*bold = 0;
return pcmdt[j]->help_hint;
}
}
}
return NULL;
}
int tty_getstring(struct tty *ptty, char *buf, int buflen)
{
char *pstr;
char c;
int cnt;
pstr = buf;
cnt = 0;
while(1)
{
if(ptty->getc(&c,1,0)!=0)
{
continue;
}
if ((c >= ' ') && (c < 0x7e))
{
*pstr = c ;
pstr++;
cnt++;
ptty->printf("%c", c);
if(cnt >= buflen - 1)
{
buf[buflen - 1] = '\0';
return 1;
}
}
else if(c == '\b')
{
if (cnt > 0)
{
pstr--;
cnt--;
ptty->printf("\b \b");
}
}
else if (c == '\r')
{
*pstr = '\0';
ptty->printf("\r\n");
return 0;
}
}
}
int cwrite(int fd,char *c,int len)
{
struct tty* ptty=(struct tty* )fd;
if(fd){
return ptty->put(c,len);
}
return fd;
}
int cread(int fd ,char *c,int len)
{
struct tty* ptty=(struct tty* )fd;
if(fd){
return ptty->getc(c,len,ptty->timeout);
}
return fd;
}
void cfcnt(int fd,unsigned int timetick)
{
struct tty* ptty=(struct tty* )fd;
if(fd){
ptty->timeout =timetick;
}
}
上一个简单的 测试函数， 其他测试命令需要自己写，然后添加到cmd 中即可
int do_clear(struct tty *ptty)
{
ptty->printf("\033[2J\033[0;0H");
return 0;
}
cmdt cmd_clear = {"clear", do_clear, "cls",
"clear: Clear screen (not supported by some terminals)\r\n"," "};下面是esp32 移植后 main。c ，其他单片机按照队形很容易移植了
#define TXD_PIN (GPIO_NUM_1)
#define RXD_PIN (GPIO_NUM_3)
static void uart0_init(void) {
const uart_config_t uart_config = {
.baud_rate = 115200,
.data_bits = UART_DATA_8_BITS,
.parity = UART_PARITY_DISABLE,
.stop_bits = UART_STOP_BITS_1,
.flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
.source_clk = UART_SCLK_APB,
};
// We won't use a buffer for sending data.
uart_driver_install(UART_NUM_0, 1024 * 2, 0, 0, NULL, 0);
uart_param_config(UART_NUM_0, &uart_config);
// uart_set_pin(UART_NUM_0,UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);
uart_set_pin(UART_NUM_0, TXD_PIN, RXD_PIN, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);
}
struct tty comtty[1];
int tty_com_getch(char *c,int len,uint16_t timetick)
{
int rlen =0;
do{
rlen =uart_read_bytes(UART_NUM_0, c, len, timetick==0?portMAX_DELAY:(timetick / portTICK_RATE_MS));
if(timetick>0&&(rlen!=len)){
return -1;
}
}while(rlen==0);
return rlen;
}
int serial_printf(char const *format , ...)
{
int len=0;
char *tty_buf =malloc(256);
if(tty_buf)
{
va_list argptr;
va_start(argptr, format);
len = vsnprintf(tty_buf, 256, format, argptr);
va_end(argptr);
if(len > 0 && len < 256)
{
uart_write_bytes(UART_NUM_0, (const char*)tty_buf, len);
vTaskDelay(5 / portTICK_PERIOD_MS);
}
free(tty_buf);
}
return len;
}
int localSerial_send(char *dat ,int len)
{
uart_write_bytes(UART_NUM_0, (const char*)dat, len);
return len;
}
// 创建 连接
struct tty * tty_com_open(void)
{
uart0_init();
struct tty* serial_tty= &comtty[0];
serial_tty->argc =0;
serial_tty->login_flag =0;
serial_tty->flag =0;
serial_tty->type = LocalSerial;
serial_tty->getc= tty_com_getch;
serial_tty->printf= serial_printf;
serial_tty->put = localSerial_send;
serial_tty->timeout =0;
linenoiseSetCompletionCallback(completion);
linenoiseSetHintsCallback(hints);
linenoiseTerminal(cwrite,cread);
linenoisefcnt(cfcnt);
return serial_tty;
}
void local_shell_proc(struct tty *ptty)
{
char *line;
while(1) {
line = linenoise((int)ptty,ptty->login_flag&0x80?"root/home:#":"passwd:#");
if(line==NULL){continue;}
ptty->printf("\r\n");
vTaskDelay(10 / portTICK_PERIOD_MS);
/* Do something with the string. */
if (line[0] != '\0' && line[0] != '/') {
// printf("echo: '%s'\r\n", line);
linenoiseHistoryAdd(line); /* Add to the history. */
cmd_tty(line,ptty);
// linenoiseHistorySave("history.txt"); /* Save the history on disk. */
} else if (!strncmp(line,"/historylen",11)) {
// The "/historylen" command will change the history len.
linenoiseHistorySetMaxLen(atoi(line+11));
} else if (!strncmp(line, "/mask", 5)) {
linenoiseMaskModeEnable();
} else if (!strncmp(line, "/unmask", 7)) {
linenoiseMaskModeDisable();
} else if (line[0] == '/') {
ptty->printf("Unreconized command: %s\n", line);
}
free(line);
}
}
void app_main(void)
{
struct tty *ptty=tty_com_open();
ptty->printf("Hello, you are using linenoise!\r\n");
local_shell_proc(ptty);
}
运行效果
?