LingYun Studio embeded system framwork software, such as thirdparty build shell and lingyun library
guowenxue
2022-04-14 f100b562fdb496adce766d80fdc9d99b1fbf8b54
booster/comport.c
@@ -4,11 +4,11 @@
 *
 *       Filename:  cp_comport.c
 *    Description:  It's the comport operate library.
 *
 *
 *        Version:  2.0.0(10/17/2018~)
 *         Author:  Guo Wenxue <guowenxue@gmail.com>
 *      ChangeLog:  1, Release initial version on "10/17/2018 03:33:25 PM"
 *
 *
 ********************************************************************************/
#include    "comport.h"
@@ -21,10 +21,10 @@
/*
/*
 *  description: Open the serial port
 *
 *   input args: $comport:  corresponding comport point
 *   input args: $comport:  corresponding comport point
 *               $dev_name:  The comport device name path, such as '/dev/ttyS3'
 *               $baudrate:  The baudrate, such as 115200
 *               $settings:  The databit,parity,stopbit,flowctrl settings, such as '8N1N'
@@ -80,7 +80,7 @@
            goto CleanUp;
        }
    }
    else
    else
    {
        rv = -5;
        goto CleanUp;
@@ -88,7 +88,7 @@
    if (0 != tcgetattr(comport->fd, &old_cfg))
    {
        rv = -6;          // Failed to get Com settings
        rv = -6;          // Failed to get Com settings
        goto CleanUp;
    }
@@ -123,11 +123,11 @@
    /* Set the parity */
    switch (comport->parity)
    {
        case 0x01:               // Odd
        case 0x01:               // Odd
            new_cfg.c_cflag |= (PARENB | PARODD);
            new_cfg.c_cflag |= (INPCK | ISTRIP);
            break;
        case 0x02:               // Even
        case 0x02:               // Even
            new_cfg.c_cflag |= PARENB;
            new_cfg.c_cflag &= ~PARODD;;
            new_cfg.c_cflag |= (INPCK | ISTRIP);
@@ -153,7 +153,7 @@
    /* Set flow control */
    switch (comport->flowctrl)
    {
        case 1:                  // Software control
        case 1:                  // Software control
        case 3:
            new_cfg.c_cflag &= ~(CRTSCTS);
            new_cfg.c_iflag |= (IXON | IXOFF);
@@ -276,7 +276,7 @@
    tcflush(comport->fd, TCIFLUSH);
    if (0 != tcsetattr(comport->fd, TCSANOW, &new_cfg))
    {
        rv = -7;          // Failed to set device com port settings
        rv = -7;          // Failed to set device com port settings
        goto CleanUp;
    }
@@ -292,8 +292,8 @@
/*
 *  description: close comport
 *   input args: $comport:  corresponding comport point
 *  description: close comport
 *   input args: $comport:  corresponding comport point
 */
void comport_close(comport_t *comport)
@@ -355,10 +355,10 @@
          {
             rv = -4;
             goto CleanUp;
          }
          }
   
   left_bytes -= rv;
   ptr += rv;
   left_bytes -= rv;
   ptr += rv;
    }
    rv = 0;
@@ -407,21 +407,21 @@
        iRet = select(comport->fd + 1, &rdfds, 0, &exfds, &stTime);
        if (0 == iRet)
        {
            rv = 0;
            rv = 0;
            goto CleanUp;
        }
        else if (0 < iRet)
        {
            if (0 != FD_ISSET(comport->fd, &exfds))
            {
                rv = -6;
                rv = -6;
                COM_PRINT("Error checking recv status.\n");
                goto CleanUp;
            }
            if (0 == FD_ISSET(comport->fd, &rdfds))
            {
                rv = 0;
                rv = 0;
                COM_PRINT("No incoming data.\n");
                goto CleanUp;
            }
@@ -431,12 +431,12 @@
            if (EINTR == errno)
            {
                COM_PRINT("catch interrupt signal.\n");
                rv = 0;
                rv = 0;
            }
            else
            {
                COM_PRINT("Check recv status failure.\n");
                rv = -7;
                rv = -7;
            }
            goto CleanUp;
@@ -480,7 +480,7 @@
/**************************************************************************************
 *  Description: Set the comport databit,parity,stopbit,flowctrl into the comport structure
 *   Input Args: comport: the comport_t pointer
 *               settings: The databit/parity/stopbit/flowctrl settings as like "8N1N"
 *               settings: The databit/parity/stopbit/flowctrl settings as like "8N1N"
 *  Output Args: NONE
 * Return Value: NONE
 *************************************************************************************/