rt-thread/bsp/stm32_radio/remote.c

/*
+-----------------------
|
| <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѧϰң<EFBFBD><EFBFBD>
|
| Chang Logs:
| Date           Author       Notes
| 2010-01-02     aozima       The bate version.
| 2010-02-10     aozima       change printf string <EFBFBD><EFBFBD><EFBFBD><EFBFBD> to english.
+----------------------------------------------------
*/

#include <rtthread.h>
#include <dfs_posix.h>
#include <stm32f10x.h>

/* <20>ض<EFBFBD><D8B6><EFBFBD>printf */
#define printf                   rt_kprintf
/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƫ<EFBFBD><C6AB>,<2C><>λ0.01ms */
#define remote_deviation         15
#define remote_code_len_max      100


/* <20><><EFBFBD><EFBFBD>ģʽ 0:û<><C3BB><EFBFBD><EFBFBD>,1:<3A><>ѧϰ,2:<3A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
unsigned int rem_mode = 0;

static unsigned int first_tick = 0;
static unsigned int rx_count = 0;
static unsigned short rm_code[remote_code_len_max];

struct rem_codes_typedef
{
    unsigned int len;
    unsigned short rem_code[remote_code_len_max];
};
struct rem_codes_typedef * p_rem_code_src = RT_NULL;

static const char  str1[]="KEY_UP";     /* <20><> */
static const char  str2[]="KEY_DOWN";   /* <20><> */
static const char  str3[]="KEY_LEFT";   /* <20><> */
static const char  str4[]="KEY_RIGHT";  /* <20><> */
static const char  str5[]="KEY_ENTER";  /* ȷ<><C8B7> */
static const char  str6[]="KEY_RETURN"; /* <20><><EFBFBD><EFBFBD> */
static const char * desc_key[6]= {str1,str2,str3,str4,str5,str6};


/* tim5 configure */
static void TIM5_Configuration(void)
{
    /* ʱ<>Ӽ<EFBFBD><D3BC><EFBFBD>Ƶ<EFBFBD><C6B5><EFBFBD><EFBFBD> */
    {
        TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
        /* Time Base configuration */
        /* 72M/720 = 0.01ms */
        TIM_TimeBaseStructure.TIM_Prescaler = 720-1;
        //<2F><><EFBFBD><EFBFBD>ģʽ:<3A><><EFBFBD>ϼ<EFBFBD><CFBC><EFBFBD>
        TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
        TIM_TimeBaseStructure.TIM_Period = 0xFFFF;
        TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
        //<2F><><EFBFBD>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼֵ
        TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;

        TIM_TimeBaseInit(TIM5, &TIM_TimeBaseStructure);
    }

    /* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
    {
        TIM_ICInitTypeDef  TIM_ICInitStructure;

        TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;/* ÿ<>μ<EFBFBD><CEBC>⵽<EFBFBD><E2B5BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CDB4><EFBFBD>һ<EFBFBD>β<EFBFBD><CEB2><EFBFBD> */
        TIM_ICInitStructure.TIM_ICFilter    = 8;/* <20>˲<EFBFBD> */

        TIM_ICInitStructure.TIM_Channel     = TIM_Channel_3;//ѡ<><D1A1>ͨ<EFBFBD><CDA8>3
        TIM_ICInitStructure.TIM_ICPolarity  = TIM_ICPolarity_Falling;//<2F>½<EFBFBD><C2BD><EFBFBD>
        TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;//ͨ<><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѡ<EFBFBD><D1A1>
        TIM_ICInit(TIM5, &TIM_ICInitStructure);

        TIM_ICInitStructure.TIM_Channel     = TIM_Channel_4;//ѡ<><D1A1>ͨ<EFBFBD><CDA8>3
        TIM_ICInitStructure.TIM_ICPolarity  = TIM_ICPolarity_Rising;//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_IndirectTI;//ͨ<><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѡ<EFBFBD><D1A1>
        TIM_ICInit(TIM5, &TIM_ICInitStructure);
    }

    /* <20><><EFBFBD>봥<EFBFBD><EBB4A5>Դѡ<D4B4><D1A1>:<3A>ⲿ<EFBFBD><E2B2BF><EFBFBD>봥<EFBFBD><EBB4A5> */
    TIM_SelectInputTrigger(TIM5, TIM_TS_ETRF);//TIM_TS_ETRF <20>ⲿ<EFBFBD><E2B2BF><EFBFBD><EFBFBD>
    /* <20><>ģʽ-<2D><>λģʽ */
    /* TIM_SlaveMode_Reset 4:ѡ<>еĴ<D0B5><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(TRGI)<29><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>³<EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><D2B2><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>¼Ĵ<C2BC><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ź<EFBFBD> */
    TIM_SelectSlaveMode(TIM5, TIM_SlaveMode_Reset);
    TIM_SelectMasterSlaveMode(TIM5, TIM_MasterSlaveMode_Enable);

    /* TIM enable counter */
    TIM_Cmd(TIM5, ENABLE);

    /* Enable the CC3 and CC4 Interrupt Request */
    TIM_ITConfig(TIM5, TIM_IT_CC3, ENABLE);
    TIM_ITConfig(TIM5, TIM_IT_CC4, ENABLE);
}

static void NVIC_Configuration(void)
{
    NVIC_InitTypeDef NVIC_InitStructure;

    /* Enable the TIM5 global Interrupt */
    NVIC_InitStructure.NVIC_IRQChannel = TIM5_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
}

static void RCC_Configuration(void)
{
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);

    /* TIM5 clock enable */
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5, ENABLE);

    /* clock enable */
    RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA ,ENABLE);
}

static void GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    /* TIM5 channel 3 pin (PA.02) configuration */
    GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;

    GPIO_Init(GPIOA, &GPIO_InitStructure);
}

void rem_start(void)
{
    RCC_Configuration();
    GPIO_Configuration();

    /* configure TIM5 for remote and encoder */
    NVIC_Configuration();
    TIM5_Configuration();

    p_rem_code_src = rt_malloc( sizeof(struct rem_codes_typedef)*6 );
    if( p_rem_code_src != RT_NULL)
    {
        rt_memset(p_rem_code_src,0, sizeof(struct rem_codes_typedef)*6 );

        /* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ */
        {
            int fd,size;
            char buf[7];/* <20>ļ<EFBFBD><C4BC><EFBFBD>ȡ<EFBFBD><C8A1>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD> #####\r\n */
            unsigned int i;
            unsigned short tmp;
            unsigned int read_index = 0;
            unsigned int EOF_flag = 1;

            printf("\r\ndecode remote codes");
            fd = open("/resource/remote.txt",O_RDONLY,0);
            if( fd>0 )
            {
                printf("\r/resource/remote.txt open succeed");
                while( EOF_flag )
                {
                    /* <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD> */
                    size = read(fd,buf,7);
                    if( (size == 7) && (buf[5]=='\r') && buf[6]=='\n' )
                    {
                        /* ת<><D7AA><EFBFBD>õ<EFBFBD><C3B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݳ<EFBFBD><DDB3><EFBFBD> */
                        tmp =   (buf[0]-'0')*10000
                                + (buf[1]-'0')*1000
                                + (buf[2]-'0')*100
                                + (buf[3]-'0')*10
                                + (buf[4]-'0');
                        if( tmp<100 )
                        {
                            unsigned int code_len = tmp;
                            p_rem_code_src[read_index].len = code_len;
                            /* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȷ<EFBFBD><C8B7><EFBFBD> <20>Ϳ<EFBFBD>ʼ<EFBFBD><CABC><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
                            for(i=0; i<code_len; i++)
                            {
                                size = read(fd,buf,7);
                                if( (size == 7) && (buf[5]=='\r') && buf[6]=='\n' )
                                {
                                    /* ת<><D7AA><EFBFBD>õ<EFBFBD><C3B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
                                    tmp =   (buf[0]-'0')*10000
                                            + (buf[1]-'0')*1000
                                            + (buf[2]-'0')*100
                                            + (buf[3]-'0')*10
                                            + (buf[4]-'0');
                                    p_rem_code_src[read_index].rem_code[i] = tmp;
                                }
                            }
                            read_index++;
                        }
                    }
                    else
                    {
                        EOF_flag = 0;
                    }
                }//while( EOF_flag )

                /* <20>ж<EFBFBD><D0B6>Ƿ<EFBFBD><C7B7><EFBFBD>ȷ<EFBFBD><C8B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD> */
                if ( p_rem_code_src[0].len > 0 && p_rem_code_src[0].len < remote_code_len_max )
                {
                    /* <20><><EFBFBD>ù<EFBFBD><C3B9><EFBFBD>ģʽΪ<CABD><CEAA><EFBFBD><EFBFBD>ʶ<EFBFBD><CAB6>ģʽ */
                    rem_mode = 2;
                    printf("\r\ndecode succeed,The remote enable\r\n");
                }
                else
                {
                    /* <20><><EFBFBD>ù<EFBFBD><C3B9><EFBFBD>ģʽΪ<CABD><CEAA><EFBFBD><EFBFBD>ʶ<EFBFBD><CAB6>ģʽ */
                    rem_mode = 0;
                    printf("\r\nrem_codes decode fail,The remote disable\r\n");
                }
            }
            else
            {
                printf("\rrem_codes /resource/remote.txt open fail! fd:%d\r\nThe remote disbale.\r\nplease run rem_study()\r\n",fd);
            }
            close(fd);
        }/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ */

    }
    else
    {
        rem_mode = 0;
        printf("\r\nmalloc rem_codes[] fail!!!\r\nThe remote disable!");
    }
}

#include <rtgui/event.h>
void rem_encoder(struct rtgui_event_kbd * p)
{
    struct rtgui_event_kbd * p_kbd_event = p;

    /* <20><><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݱ<EFBFBD><DDB1><EFBFBD><EFBFBD><EFBFBD> */
    if( (rem_mode==2) && (rt_tick_get()>first_tick+10) && (rx_count > 0) )
    {
        /* <20>ֶ<EFBFBD><D6B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
        rm_code[0] = 0;
        rx_count = 0;

        /* ƥ<>䲶<EFBFBD><E4B2B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
        {
            unsigned int tmp;
            unsigned int err_flag = 0;
            unsigned int rem_cmp_n = 6;

            /* ѭ<><D1AD>ƥ<EFBFBD><C6A5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>KEY */
            while( rem_cmp_n )
            {
                unsigned int tmp2 = p_rem_code_src[ 6-rem_cmp_n ].len;
                //printf("\r\nrem_cmp_n:%d  tmp2:%d",rem_cmp_n,tmp2);
                if( tmp2 )
                {

                    for(tmp=0; tmp<tmp2; tmp++)
                    {
                        /* <20>жϲ<D0B6><CFB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD>ƫ<EFBFBD><C6AB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Χ<EFBFBD><CEA7> */
                        if( !( (rm_code[tmp] < p_rem_code_src[6-rem_cmp_n].rem_code[tmp]+remote_deviation)
                                && (rm_code[tmp] > p_rem_code_src[6-rem_cmp_n].rem_code[tmp]-remote_deviation)) )
                        {
                            err_flag = 1;
                        }
                    }
                }
                else
                {
                    err_flag = 1;
                    printf("\r\nThe rem codes len is 0.");
                }

                if( err_flag==0 )
                {
                    /* <20>Ա<EFBFBD>ȫ<EFBFBD><C8AB><EFBFBD><EFBFBD><EFBFBD>ݷ<EFBFBD><DDB7><EFBFBD> */
                    printf("\r\nmatch key: %s",desc_key[6-rem_cmp_n]);
                    switch( rem_cmp_n )
                    {
                    case 6:
                        p_kbd_event->key  = RTGUIK_UP;
                        break;
                    case 5:
                        p_kbd_event->key  = RTGUIK_DOWN;
                        break;
                    case 4:
                        p_kbd_event->key  = RTGUIK_LEFT;
                        break;
                    case 3:
                        p_kbd_event->key  = RTGUIK_RIGHT;
                        break;
                    case 2:
                        p_kbd_event->key  = RTGUIK_RETURN;
                        break;
                    case 1:
                        p_kbd_event->key  = RTGUIK_HOME;
                        break;
                    default:
                        break;
                    }
                    rem_cmp_n = 0;
                }
                else
                {
                    /* <20>ԱȲ<D4B1><C8B2><EFBFBD><EFBFBD><EFBFBD>,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<2C>Խ<EFBFBD><D4BD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD>ζԱ<CEB6> */
                    err_flag = 0;
                    rem_cmp_n --;
                }

            }
        }
    }//<2F><><EFBFBD><EFBFBD>ң<EFBFBD><D2A3>ƥ<EFBFBD><C6A5>
}

/* remote isr */
void remote_isr(void)
{
    static unsigned int clr_flag = 1;
    unsigned int tick_now  = rt_tick_get();

    /* <20><><EFBFBD><EFBFBD>ң<EFBFBD><D2A3><EFBFBD>½<EFBFBD><C2BD><EFBFBD> */
    if(TIM_GetITStatus(TIM5, TIM_IT_CC3) == SET)
    {
        switch( rem_mode )
        {
        case 0://δ<><CEB4><EFBFBD><EFBFBD>
            break;
        case 1://<2F><>ѧϰ
            if( (rx_count==0) || (rx_count>90) || (tick_now>first_tick+10) )
            {
                //<2F><>Ҫ<EFBFBD><D2AA>0
                rx_count = 0;
                clr_flag = 1;
            }
            if( rx_count < remote_code_len_max )
            {
                rm_code[rx_count++] = TIM_GetCapture3(TIM5);
            }
            break;
        case 2://<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
            if( (rx_count>90) || tick_now>first_tick+10 )
            {
                rx_count = 0;
                clr_flag = 1;
            }
            if(rx_count < remote_code_len_max )
            {
                rm_code[rx_count++] = TIM_GetCapture3(TIM5);
            }
            break;
        default:
            rem_mode = 0;//<2F><><EFBFBD><EFBFBD>ģʽΪδ<CEAA><CEB4><EFBFBD><EFBFBD>
            break;
        }
        TIM_ClearITPendingBit(TIM5, TIM_IT_CC3);
    }

    /* <20><><EFBFBD><EFBFBD>ң<EFBFBD><D2A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
    if(TIM_GetITStatus(TIM5, TIM_IT_CC4) == SET)
    {
        switch( rem_mode )
        {
        case 0://δ<><CEB4><EFBFBD><EFBFBD>
            break;
        case 1://<2F><>ѧϰ
            if( rx_count < remote_code_len_max )
            {
                rm_code[rx_count++] = TIM_GetCapture4(TIM5);
            }
            break;
        case 2://<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
            if( rx_count < remote_code_len_max )
            {
                rm_code[rx_count++] = TIM_GetCapture4(TIM5);
            }
            break;
        default:
            rem_mode = 0;//<2F><><EFBFBD><EFBFBD>ģʽΪδ<CEAA><CEB4><EFBFBD><EFBFBD>
            break;
        }
        TIM_ClearITPendingBit(TIM5, TIM_IT_CC4);
    }

    //<2F><><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>
    first_tick = tick_now;
    //<2F><><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD>ü<EFBFBD><C3BC><EFBFBD><EFBFBD><EFBFBD>
    if( clr_flag )
    {
        //<2F><><EFBFBD>ü<EFBFBD><C3BC><EFBFBD><EFBFBD><EFBFBD>
        TIM_SetCounter(TIM5,0);
        clr_flag = 0;
    }
}

#include <finsh.h>
/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѧϰ<D1A7><CFB0><EFBFBD><EFBFBD> */
int rem_study(void)
{
    unsigned int i;

    int fd,size;
    unsigned char tmp_buf[ (remote_code_len_max+1)*7 ];

    rem_mode = 1;
    rx_count = 0;
    printf("\r\nremote studing.....");
    fd = open("/resource/remote.txt",O_WRONLY | O_TRUNC,0);
    if( !(fd<0) )
    {
        printf("\r\n/resource/remote.txt create succeed.");
    }
    else
    {
        printf("\r/resource/remote.txt create fail.\r\nabort.");
        return -1;
    }

    /* ѧϰ6<CFB0><36><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
    for( i=0; i<6; i++)
    {
        unsigned int is_ok = 1;
        printf("\r\npress key %s",desc_key[i]);
        while( is_ok==1 )
        {
            if( (rem_mode==1) && (rt_tick_get()>first_tick+10) && (rx_count > 0) )
            {
                unsigned int a,b;
                unsigned char * p = tmp_buf;

                printf("\r\n%s",desc_key[i]);

                b = rx_count;
                p_rem_code_src[i].len = rx_count;

                /* TIM disable counter */
                TIM_Cmd(TIM5, DISABLE);
                /* disable the CC3 and CC4 Interrupt Request */
                TIM_ITConfig(TIM5, TIM_IT_CC3, DISABLE);
                TIM_ITConfig(TIM5, TIM_IT_CC4, DISABLE);

                p[0] = rx_count / 10000 +'0';
                rx_count = rx_count % 10000;
                p[1] = rx_count / 1000  +'0';
                rx_count = rx_count % 1000;
                p[2] = rx_count / 100   +'0';
                rx_count = rx_count % 100;
                p[3] = rx_count / 10    +'0';
                rx_count = rx_count % 10;
                p[4] = rx_count        +'0';
                rx_count = 0;
                p[5] = '\r';
                p[6] = '\n';
                p += 7;

                rm_code[0] = 0;

                for( a=0; a<b; a++)
                {
                    /* <20>ѵ<EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD>ֱ<EFBFBD><D6B1>д<EFBFBD><D0B4><EFBFBD><EFBFBD>Ʒ<EFBFBD><C6B7><EFBFBD><EFBFBD> */
                    p_rem_code_src[i].rem_code[a] = rm_code[a];

                    /* Ȼ<><C8BB>ת<EFBFBD><D7AA><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD><C4B1><EFBFBD>ʽ #####\r\n */
                    p[0] = rm_code[a] / 10000 +'0';
                    rm_code[a] = rm_code[a] % 10000;
                    p[1] = rm_code[a] / 1000  +'0';
                    rm_code[a] = rm_code[a] % 1000;
                    p[2] = rm_code[a] / 100   +'0';
                    rm_code[a] = rm_code[a] % 100;
                    p[3] = rm_code[a] / 10   +'0';
                    rm_code[a] = rm_code[a] % 10;
                    p[4] = rm_code[a]        +'0';
                    p[5] = '\r';
                    p[6] = '\n';
                    p += 7;
                }
                size = write(fd,(char*)tmp_buf,(b+1)*7 );
                if( size==((b+1)*7) )
                {
                    printf(" file write succeed!");
                    is_ok++;
                    rt_thread_delay( 2 );

                    /* <20><><EFBFBD>´<EFBFBD><C2B4><EFBFBD> TIM5 <20><><EFBFBD>в<EFBFBD><D0B2><EFBFBD> */
                    TIM_ClearITPendingBit(TIM5, TIM_IT_CC3);
                    TIM_ClearITPendingBit(TIM5, TIM_IT_CC4);
                    /* TIM ENABLE counter */
                    TIM_Cmd(TIM5, ENABLE);
                    /* ENABLE the CC3 and CC4 Interrupt Request */
                    TIM_ITConfig(TIM5, TIM_IT_CC3, ENABLE);
                    TIM_ITConfig(TIM5, TIM_IT_CC4, ENABLE);
                }
                else
                {
                    printf(" file write fail.\r\nabort.");
                    return -1;
                }
            }
            rt_thread_delay(1);
        }//while( is_ok==1 )
    }//for( i=0; i<6; i++)
    close(fd);
    printf("\r\nremote study complete.The remote enable.\r\n");
    rem_mode = 2;
    return 0;
}
FINSH_FUNCTION_EXPORT(rem_study, rem_study);