uart = uart_no;

switch (uart) {

case 1:

tx_mux = string(MUX_DIR) + string(UART1_TX_MUX);

rx_mux = string(MUX_DIR) + string(UART1_RX_MUX);

ct_mux = string(MUX_DIR) + string(UART1_CT_MUX);

rt_mux = string(MUX_DIR) + string(UART1_RT_MUX);

tx_mode = UART1_MODE;

rx_mode = UART1_MODE;

ct_mode = UART1_MODE;

rt_mode = UART1_MODE;

file = UART1_FILE;

//default:

// cerr << "invalid uart no.: " << uart_no << '\n';

}

ofstream fd;

fd.open(tx_mux.c_str());

fd << tx_mode;

fd.close();

fd.open(rx_mux.c_str());

fd << rx_mode;

fd.close();

fd.open(ct_mux.c_str());

fd << ct_mode;

fd.close();

fd.open(rt_mux.c_str());

fd << rt_mode;

fd.close();

memset(&tio, 0, sizeof(tio));

tio.c_iflag = 0;

tio.c_oflag = 0;

tio.c_cflag = CS8|CREAD|CLOCAL;

tio.c_lflag = 0;

tio.c_cc[VMIN] = 1;

tio.c_cc[VTIME] = 5;

com_fd = open(file.c_str(), O_RDWR | O_NOCTTY | O_NDELAY);

if (com_fd < 0) {

cerr << "Cannot open serial port\n";

exit(1);

}

cfsetospeed(&tio,B115200);

cfsetispeed(&tio,B115200);

tcsetattr(com_fd,TCSANOW,&tio);

fcntl(com_fd, F_SETFL, 0);

cout << "bd;iagjb\n";

int wr = write(com_fd, message, length);

cout << "adkmnvbdjkbgajki\n";

if (wr < 0) {

cerr << "Error transmitting to uart" << uart << '\n';

return false;

}

return true;

int rd = read(com_fd, message, length);

if (rd < 0) {

cerr << "Error receiving from uart" << uart << '\n';

return false;

}

return true;

char buf[5] = {'h', 'e', 'l', 'l', 'o'};

Uart test = Uart(1);

test.transmit(buf, 5);