struct aw_serial_dcb {
  uint32_t  baud_rate;
  uint32_t  byte_size:4;
  uint32_t  f_parity:1;
  uint32_t  parity:1;
  uint32_t  stop_bits:2;
  uint32_t  f_ctsflow:1;
  uint32_t  f_rtsctrl:2;
  uint32_t  f_dsrsensitivity:1;
  uint32_t  f_dsrflow:1;
  uint32_t  f_dtrctrl:2;
  uint32_t  f_outx:1;
  uint32_t  f_inx:1;
  uint32_t  f_fast_respond_recv:1;
  uint32_t  f_dummy:14;
  uint16_t  xon_lim;
  uint16_t  xoff_lim;
  char      xon_char;
  char      xoff_char;
};

struct aw_serial_timeout {
    uint32_t  rd_timeout;
    uint32_t  rd_interval_timeout;
}

#include "aworks.h"
#include "aw_task.h"
#include "aw_delay.h"
#include "aw_serial.h"
#include "aw_ioctl.h"
#include "aw_fcntl.h"
#include "aw_application_autoconf.h"
#include "aw_unistd.h"
#include "aw_vdebug.h"
#include "rtk_autoconf.h"
/**
 * rief 串口 demo
 * 
eturn 無
 */
aw_local void* __task_handle (void *parg)
{
    char                      buf[32];
    int                       len = 0;
    struct  aw_serial_dcb     dcb;
    aw_err_t                  ret;
    struct aw_serial_timeout  timeout;
    int                       fd;


    fd = aw_open(CONFIG_DEMO_SERIAL_DEVICE_NAME,AW_O_RDWR,0);
    if(fd < 0){
        aw_kprintf("serial open failed
");
        aw_close(fd);
        return 0;
    }


    /* 獲取dcb的默認配置 */
    ret = aw_serial_dcb_get(fd, &dcb);
    if (AW_OK != ret) {
        aw_kprintf("serial get dcb failed: %d 
",ret);
        aw_close(fd);
        return 0;
    }


    /* 配置串口波特率為115200，8個數據位，1位停止位，無奇偶校驗 */
    dcb.baud_rate = 115200;
    dcb.byte_size = 8;
    dcb.stop_bits = AW_SERIAL_ONESTOPBIT;
    dcb.f_parity = AW_FALSE;
    ret = aw_serial_dcb_set(fd, &dcb);
    if (AW_OK != ret) {
        aw_kprintf("serial set dcb failed: %d 
",ret);
        aw_close(fd);
        return 0;
    }


    /* 配置串口超時 */
    ret = aw_serial_timeout_get(fd, &timeout);
    if (AW_OK != ret) {
        aw_kprintf("serial get timeout failed: %d 
",ret);
        aw_close(fd);
        return 0;
    }


    timeout.rd_timeout = 1000;          /* 讀總超時為1s */
    timeout.rd_interval_timeout = 50;   /* 碼間超時為50ms */
    ret = aw_serial_timeout_set(fd, &timeout);
    if (AW_OK != ret) {
        aw_kprintf("serial set dcb failed: %d 
",ret);
        aw_close(fd);
        return 0;
    }


    /* 收到什么數據就發送什么數據 */
    AW_FOREVER {
        /* 讀取數據 */
        memset(buf, 0, sizeof(buf));
        len = aw_read(fd, buf, sizeof(buf));
        if (len > 0) {
            aw_write(fd, buf, len);
            aw_kprintf("%s
",buf);
        }
    }


    aw_close(fd);
    return 0;
}




AW_TASK_DECL(serial_tsk, 4096);
/******************************************************************************/
void demo_serial_int_entry (void)
{
    aw_task_id_t    tsk;


    tsk = AW_TASK_INIT( serial_tsk,
                       "Serial int demo",
                        12,
                        4096,
                        __task_handle,
                        (void *)NULL);
    if (tsk == NULL) {
        aw_kprintf("Serial int demo task create failed
");
        return;
    }


    if (aw_task_startup(tsk) != AW_OK) {
        AW_TASK_TERMINATE(serial_tsk);
    }
}