基于飞凌ok6410
串口调试工具3.0，两根usb转串口，一根用于终端调试，一根接串口扩展的com1,com1接pc实现串口助手
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <errno.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <termios.h>
#include <stdlib.h>
/*鎵撳紑涓插彛鍑芥暟*/
int open_port(int fd,int comport)
{
char *dev[]={"/dev/ttySAC0","/dev/ttySAC1","/dev/ttySAC2"};
long vdisable;
if (comport==1)//涓插彛 1
{
fd = open( "/dev/ttySAC0", O_RDWR|O_NOCTTY|O_NDELAY);
if (-1 == fd)
{
perror("Can't Open Serial Port0");
return(-1);
}
}
else if(comport==2)//涓插彛 2
{
fd = open( "/dev/ttySAC1", O_RDWR|O_NOCTTY|O_NDELAY);
if (-1 == fd)
{
perror("Can't Open Serial Port1");
return(-1);
}
}
else if (comport==3)//涓插彛 3
{
fd = open( "/dev/ttySAC2", O_RDWR|O_NOCTTY|O_NDELAY);
if (-1 == fd)
{
perror("Can't Open Serial Port2");
return(-1);
}
}
/*鎭㈠涓插彛涓洪樆濉炵姸鎬?/
if(fcntl(fd, F_SETFL, 0)<0)
printf("fcntl failed!\n");
else
printf("fcntl=%d\n",fcntl(fd, F_SETFL,0));
/*娴嬭瘯鏄惁涓虹粓绔澶?/
if(isatty(STDIN_FILENO)==0)
printf("standard input is not a terminal device\n");
else
printf("isatty success!\n");
printf("fd-open=%d\n",fd);
return fd;
}
int set_opt(int fd,int nSpeed, int nBits, char nEvent, int nStop)
{
struct termios newtio,oldtio;
/*淇濆瓨娴嬭瘯鐜版湁涓插彛鍙傛暟璁剧疆,鍦ㄨ繖閲屽鏋滀覆鍙ｅ彿绛夊嚭閿?浼氭湁鐩稿叧鐨勫嚭閿欎俊鎭?/
if ( tcgetattr( fd,&oldtio) != 0)
{
perror("SetupSerial 1");
return -1;
}
bzero( &newtio, sizeof( newtio ) );
/*姝ラ涓€,璁剧疆瀛楃澶у皬*/
newtio.c_cflag |= CLOCAL | CREAD;
newtio.c_cflag &= ~CSIZE;
/*璁剧疆鍋滄浣?/
switch( nBits )
{
case 7:
newtio.c_cflag |= CS7;
break;
case 8:
newtio.c_cflag |= CS8;
break;
}
/*璁剧疆濂囧伓鏍￠獙浣?/
switch( nEvent )
{
case 'O': //濂囨暟
newtio.c_cflag |= PARENB;
newtio.c_cflag |= PARODD;
newtio.c_iflag |= (INPCK | ISTRIP);
break;
case 'E': //鍋舵暟
newtio.c_iflag |= (INPCK | ISTRIP);
newtio.c_cflag |= PARENB;
newtio.c_cflag &= ~PARODD;
break;
case 'N': //鏃犲鍋舵牎楠屼綅
newtio.c_cflag &= ~PARENB;
break;
}
/*璁剧疆娉㈢壒鐜?/
switch( nSpeed )
{
case 2400:
cfsetispeed(&newtio, B2400);
cfsetospeed(&newtio, B2400);
break;
case 4800:
cfsetispeed(&newtio, B4800);
cfsetospeed(&newtio, B4800);
break;
case 9600:
cfsetispeed(&newtio, B9600);
cfsetospeed(&newtio, B9600);
break;
case 115200:
cfsetispeed(&newtio, B115200);
cfsetospeed(&newtio, B115200);
break;
case 460800:
cfsetispeed(&newtio, B460800);
cfsetospeed(&newtio, B460800);
break;
default:
cfsetispeed(&newtio, B9600);
cfsetospeed(&newtio, B9600);
break;
}
/*璁剧疆鍋滄浣?/
if( nStop == 1 )
newtio.c_cflag &= ~CSTOPB;
else if ( nStop == 2 )
newtio.c_cflag |= CSTOPB;
/*璁剧疆绛夊緟鏃堕棿鍜屾渶灏忔帴鏀跺瓧绗?/
newtio.c_cc[VTIME] = 0;
newtio.c_cc[VMIN] = 0;
/*澶勭悊鏈帴鏀跺瓧绗?/
tcflush(fd,TCIFLUSH);
/*婵€娲绘柊閰嶇疆*/
if((tcsetattr(fd,TCSANOW,&newtio))!=0)
{
perror("com set error");
return -1;
}
printf("set done!\n");
return 0;
}
int main(void)
{
int fd;
int nwrite,i,nread;
//char buff[]="Hello\n";
if((fd=open_port(fd,2))<0)
{
//鎵撳紑涓插彛
perror("open_port error");
return;
}
if((i=set_opt(fd,115200,8,'N',1))<0)
{//璁剧疆涓插彛
perror("set_opt error");
return;
}
printf("fd=%d\n",fd);
for(i=0; i<100; i++)
{
char buff[]="11\n";
printf("nread=%d,%s\n",nread,buff);
printf("--------This is yuanlai de buff---------\n");
nwrite=write(fd,buff,sizeof(buff));//鍐欎覆鍙?
nread=read(fd,buff,1024);
//printf("nwrite=%d,%s\n",nwrite,buff);
printf("nread=%d,%s\n",nread,buff);
printf("--------THIS IS CHANGED DUFF-----\n");
sleep(1);
}
close(fd);
return;
}
----------------------------------------------
下面是 友善的 GPRS + 串口 程序。。当做笔记了。。哈哈
----------------------------------------------------
这有个友善的串口例程，参考下吧，用gcc编译可以在linux下用
# include <stdio.h>
# include <stdlib.h>
# include <termio.h>
# include <unistd.h>
# include <fcntl.h>
# include <getopt.h>
# include <time.h>
# include <errno.h>
# include <string.h>
int CommFd, TtyFd;
static void Error(const char *Msg)
{
fprintf (stderr, "%s\n", Msg);
fprintf (stderr, "strerror() is %s\n", strerror(errno));
exit(1);
}
static void Warning(const char *Msg)
{
fprintf (stderr, "Warning: %s\n", Msg);
}
static int SerialSpeed(const char *SpeedString)
{
int SpeedNumber = atoi(SpeedString);
# define TestSpeed(Speed) if (SpeedNumber == Speed) return B##Speed
TestSpeed(1200);
TestSpeed(2400);
TestSpeed(4800);
TestSpeed(9600);
TestSpeed(19200);
TestSpeed(38400);
TestSpeed(57600);
TestSpeed(115200);
TestSpeed(230400);
Error("Bad speed");
return -1;
}
static void PrintUsage(void)
{
fprintf(stderr, "comtest - interactive program of comm port\n");
fprintf(stderr, "press [ESC] 3 times to quit\n\n");
fprintf(stderr, "Usage: comtest [-d device] [-t tty] [-s speed] [-7] [-c] [-x] [-o] [-h]\n");
fprintf(stderr, " -7 7 bit\n");
fprintf(stderr, " -x hex mode\n");
fprintf(stderr, " -o output to stdout too\n");
fprintf(stderr, " -c stdout output use color\n");
fprintf(stderr, " -h print this help\n");
exit(-1);
}
static inline void WaitFdWriteable(int Fd)
{
fd_set WriteSetFD;
FD_ZERO(&WriteSetFD);
FD_SET(Fd, &WriteSetFD);
if (select(Fd + 1, NULL, &WriteSetFD, NULL, NULL) < 0) {
Error(strerror(errno));
}
}
int sendUart(char c)
{
WaitFdWriteable(CommFd);
return write(CommFd, &c, 1);
}
char recUart()
{
char c='\0';
if (FD_ISSET(CommFd, &ReadSetFD))
{
if(read(CommFd, &c, 1) == 1) return c;
else printf("No data to receive.\n");
}
}
int main(int argc, char **argv)
{
struct termios TtyAttr;
struct termios BackupTtyAttr;
int DeviceSpeed = B115200;
int TtySpeed = B115200;
int ByteBits = CS8;
const char *DeviceName = "/dev/ttyS0";
const char *TtyName = "/dev/tty";
int OutputHex = 0;
int OutputToStdout = 0;
int UseColor = 0;
printf("Now we start.\n");
opterr = 0;
for (;;) {
int c = getopt(argc, argv, "d:s:t:7xoch");
if (c == -1)
break;
switch(c) {
case 'd':
DeviceName = optarg;
break;
case 't':
TtyName = optarg;
break;
case 's':
if (optarg[0] == 'd') {
DeviceSpeed = SerialSpeed(optarg + 1);
} else if (optarg[0] == 't') {
TtySpeed = SerialSpeed(optarg + 1);
} else
TtySpeed = DeviceSpeed = SerialSpeed(optarg);
break;
case 'o':
OutputToStdout = 1;
break;
case '7':
ByteBits = CS7;
break;
case 'x':
OutputHex = 1;
break;
case 'c':
UseColor = 1;
break;
case '?':
case 'h':
default:
PrintUsage();
}
}
if (optind != argc)
PrintUsage();
CommFd = open(DeviceName, O_RDWR, 0);
if (CommFd < 0)
Error("Unable to open device");
if (fcntl(CommFd, F_SETFL, O_NONBLOCK) < 0)
Error("Unable set to NONBLOCK mode");
memset(&TtyAttr, 0, sizeof(struct termios));
TtyAttr.c_iflag = IGNPAR;
TtyAttr.c_cflag = DeviceSpeed | HUPCL | ByteBits | CREAD | CLOCAL;
TtyAttr.c_cc[VMIN] = 1;
if (tcsetattr(CommFd, TCSANOW, &TtyAttr) < 0)
Warning("Unable to set comm port");
TtyFd = open(TtyName, O_RDWR | O_NDELAY, 0);
if (TtyFd < 0)
Error("Unable to open tty");
TtyAttr.c_cflag = TtySpeed | HUPCL | ByteBits | CREAD | CLOCAL;
if (tcgetattr(TtyFd, &BackupTtyAttr) < 0)
Error("Unable to get tty");
if (tcsetattr(TtyFd, TCSANOW, &TtyAttr) < 0)
Error("Unable to set tty");
for (;;) {
unsigned char Char = 0;
fd_set ReadSetFD;
void OutputStdChar(FILE *File) {
char Buffer[10];
int Len = sprintf(Buffer, OutputHex ? "%.2X " : "%c", Char);
fwrite(Buffer, 1, Len, File);
}
FD_ZERO(&ReadSetFD);
FD_SET(CommFd, &ReadSetFD);
FD_SET( TtyFd, &ReadSetFD);
# define max(x,y) ( ((x) >= (y)) ? (x) : (y) )
if (select(max(CommFd, TtyFd) + 1, &ReadSetFD, NULL, NULL, NULL) < 0) {
Error(strerror(errno));
}
# undef max
if (FD_ISSET(CommFd, &ReadSetFD)) {
while (read(CommFd, &Char, 1) == 1) {
WaitFdWriteable(TtyFd);
if (write(TtyFd, &Char, 1) < 0) {
Error(strerror(errno));
}
if (OutputToStdout) {
if (UseColor)
fwrite("\x1b[01;34m", 1, 8, stdout);
OutputStdChar(stdout);
if (UseColor)
fwrite("\x1b[00m", 1, 8, stdout);
fflush(stdout);
}
}
}
if (FD_ISSET(TtyFd, &ReadSetFD)) {
while (read(TtyFd, &Char, 1) == 1) {
static int EscKeyCount = 0;
WaitFdWriteable(CommFd);
if (write(CommFd, &Char, 1) < 0) {
Error(strerror(errno));
}
if (OutputToStdout) {
if (UseColor)
fwrite("\x1b[01;31m", 1, 8, stderr);
OutputStdChar(stderr);
if (UseColor)
fwrite("\x1b[00m", 1, 8, stderr);
fflush(stderr);
}
if (Char == '\x1b') {
EscKeyCount ++;
if (EscKeyCount >= 3)
goto ExitLabel;
} else
EscKeyCount = 0;
}
}
}
ExitLabel:
if (tcsetattr(TtyFd, TCSANOW, &BackupTtyAttr) < 0)
Error("Unable to set tty");
return 0;
}
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