将Windows串行程序移植到Linux

我没有得到任何答案我的上一个问题（ 在Debian Gnu / Linux中的Usb-serial编写和读取数据问题 ）所以我现在正在尝试不同的方法。

我将我的仪表插入Windows，运行专有程序并检查COM端口设置设置是否在这里 。

然后我根据这篇文章写了一些代码。 这就是我所拥有的

#include  #include  #include  #include  #include  #include  #define DEVICE "/dev/ttyUSB0" #define WRITE_SPEED B1200 #define READ_SPEED B1200 #define PARITY ~PARENB #define STOPBITS ~CSTOPB #define DATASIZE CS8 #define HARDWARE_FLOW_CONTROL ~CRTSCTS #define RECEIVER CREAD #define MODEM_CONTROL_LINES CLOCAL #define START_STOP_INPUT_CONTROL IXON #define START_STOP_OUTPUT_CONTROL IXOFF #define ANY_CHARACTER_RESTORE_STOPPED_OUTPUT ~IXANY #define CANONICAL_MODE ~ICANON #define PRINT_ECHO ECHO #define ECHO_NEW_LINE ECHONL #define ERASE_CHARACTER ECHOE #define APPLICATION_DEFINED_CHARACTER IEXTEN #define GENERATE_SIGNALS ISIG #define OUTPUT_PROCESSING OPOST #define SEND_TIMES_COUNT 1 #define SLEEP_TIME 0 unsigned int HEX_DATA_INPUT[] = {0xFF, 0x3A, 0x32, 0x34, 0x31, 0x3B, 0x30, 0x3B, 0x36, 0x35, 0x34, 0x30, 0x35, 0x0D}; unsigned int HEX_DATA_OUTPUT[] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; int HEX_DATA_SIZE = 14; /*setup terminal fd - terminal file descriptor returns 0 if everything fine and not 0 otherwise */ int setupTerminal(int fd) { int ret = 0; struct termios SerialPortSettings; tcgetattr(fd, &SerialPortSettings); cfsetispeed(&SerialPortSettings, WRITE_SPEED); cfsetospeed(&SerialPortSettings, READ_SPEED); SerialPortSettings.c_cflag &= STOPBITS; SerialPortSettings.c_cflag &= ~CSIZE; SerialPortSettings.c_cflag |= DATASIZE; SerialPortSettings.c_cflag &= HARDWARE_FLOW_CONTROL; SerialPortSettings.c_cflag |= RECEIVER | MODEM_CONTROL_LINES; SerialPortSettings.c_iflag &= (START_STOP_INPUT_CONTROL | START_STOP_OUTPUT_CONTROL | ANY_CHARACTER_RESTORE_STOPPED_OUTPUT); SerialPortSettings.c_iflag &= (CANONICAL_MODE | PRINT_ECHO | ECHO_NEW_LINE | ERASE_CHARACTER| APPLICATION_DEFINED_CHARACTER | GENERATE_SIGNALS); SerialPortSettings.c_oflag &= OUTPUT_PROCESSING; if((tcsetattr(fd, TCSANOW, &SerialPortSettings)) != 0) { /*Error while changing port settings*/ printf("Error in setting attributes. Error text:%s\n", strerror(errno)); ret = errno; } } int main(int argc, char **argv) { int ret = 0; /*We are opening serila-usb port here*/ int fd = open(DEVICE, O_RDWR | O_NOCTTY | O_NONBLOCK | O_NDELAY); if(fd != -1) { /*port has been opened successfully*/ if(setupTerminal(fd) == 0) { /*Terminal has been st up correctly*/ /*discard old data in the buffer*/ tcflush(fd, TCIFLUSH); /*writing data to the port*/ int writeRet = -1; int i = 0; for(i = 0; i < SEND_TIMES_COUNT; ++i) { writeRet = write(fd, HEX_DATA_INPUT, HEX_DATA_SIZE * sizeof(unsigned int)); printf("writeRet=%d\n", writeRet); } if(writeRet != -1) { /*writing to the port succeffull*/ /*Delay before reading data*/ sleep(SLEEP_TIME); int readRet = read(fd, HEX_DATA_OUTPUT, HEX_DATA_SIZE * sizeof(unsigned int)); if(readRet != -1) { /*reading from the port successfully*/ printf("readRet=%d\n", readRet); } else { /*Error while reading from the port*/ printf("error while reading from the port. Error code:%d; Error message:%s\n", errno, strerror(errno)); ret = errno; } } else { /*Error while writing data to the port*/ printf("writing to the port failed. Error text: %\n", strerror(errno)); ret = errno; } } else { printf("error opening %s. Error message:%s\n", DEVICE, strerror(errno)); ret = errno; } } else { printf("error opening port. Error number: %d; error text: %s\n", errno, strerror(errno)); ret = errno; } int cdf = close(fd); printf("cdf=%d\n", cdf); printf("press any key to exit\n"); getchar(); return ret; } 

这段代码允许我成功地将56 bytes写入端口，但是读取尝试给出了error 11 “资源temproary不可用” 。 我想这是因为我对termios结构的错误设置，但我不知道哪个。 在Windows中，我使用软件“串口监视器”跟踪设备和专有程序之间的数据交换，跟踪文件位于此处名称exchange.xlsx我试图在程序中设置端口，就像专有程序所做的那样根据此文件中的信息，但没有运气。 你能帮我找一下我的错误在哪里吗？