driver_em4095_basic.c

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#include "driver_em4095_basic.h"
 
static em4095_handle_t gs_handle;                                                                 
static volatile uint8_t gs_flag;                                                                  
static void (*gs_callback)(em4095_mode_t mode, em4095_decode_t *buf, uint16_t len) = NULL;        

static void a_receive_callback(em4095_mode_t mode, em4095_decode_t *buf, uint16_t len)
{
    switch (mode)
    {
        case EM4095_MODE_READ :
        {
            gs_flag = 1;
            if (gs_callback != NULL)
            {
                gs_callback(mode, buf, len);
            }
 
            break;
        }
        case EM4095_MODE_WRITE :
        {
            gs_flag = 1;
            if (gs_callback != NULL)
            {
                gs_callback(mode, buf, len);
            }
 
            break;
        }
        default :
        {
            em4095_interface_debug_print("em4095: irq unknown mode.\n");
 
            break;
        }
    }
}

uint8_t em4095_basic_irq_handler(void)
{
    if (em4095_irq_handler(&gs_handle) != 0)
    {
        return 1;
    }
 
    return 0;
}

uint8_t em4095_basic_init(void (*callback)(em4095_mode_t mode, em4095_decode_t *buf, uint16_t len))
{
    uint8_t res;
 
    /* link interface function */
    DRIVER_EM4095_LINK_INIT(&gs_handle, em4095_handle_t);
    DRIVER_EM4095_LINK_SHD_GPIO_INIT(&gs_handle, em4095_interface_shd_gpio_init);
    DRIVER_EM4095_LINK_SHD_GPIO_DEINIT(&gs_handle, em4095_interface_shd_gpio_deinit);
    DRIVER_EM4095_LINK_SHD_GPIO_WRITE(&gs_handle, em4095_interface_shd_gpio_write);
    DRIVER_EM4095_LINK_MOD_GPIO_INIT(&gs_handle, em4095_interface_mod_gpio_init);
    DRIVER_EM4095_LINK_MOD_GPIO_DEINIT(&gs_handle, em4095_interface_mod_gpio_deinit);
    DRIVER_EM4095_LINK_MOD_GPIO_WRITE(&gs_handle, em4095_interface_mod_gpio_write);
    DRIVER_EM4095_LINK_DEMOD_GPIO_INIT(&gs_handle, em4095_interface_demod_gpio_init);
    DRIVER_EM4095_LINK_DEMOD_GPIO_DEINIT(&gs_handle, em4095_interface_demod_gpio_deinit);
    DRIVER_EM4095_LINK_DEMOD_GPIO_READ(&gs_handle, em4095_interface_demod_gpio_read);
    DRIVER_EM4095_LINK_TIMESTAMP_READ(&gs_handle, em4095_interface_timestamp_read);
    DRIVER_EM4095_LINK_DELAY_MS(&gs_handle, em4095_interface_delay_ms);
    DRIVER_EM4095_LINK_DEBUG_PRINT(&gs_handle, em4095_interface_debug_print);
    DRIVER_EM4095_LINK_RECEIVE_CALLBACK(&gs_handle, a_receive_callback);
    gs_callback = callback;
 
    /* init */
    res = em4095_init(&gs_handle);
    if (res != 0)
    {
        em4095_interface_debug_print("em4095: init failed.\n");
 
        return 1;
    }
 
    /* set default div */
    res = em4095_set_div(&gs_handle, EM4095_BASIC_DEFAULT_DIV);
    if (res != 0)
    {
        em4095_interface_debug_print("em4095: set div failed.\n");
        (void)em4095_deinit(&gs_handle);
 
        return 1;
    }
 
    /* power down */
    res = em4095_power_down(&gs_handle);
    if (res != 0)
    {
        em4095_interface_debug_print("em4095: power down failed.\n");
        (void)em4095_deinit(&gs_handle);
 
        return 1;
    }
 
    return 0;
}

uint8_t em4095_basic_set_div(uint32_t clock_div)
{
    uint8_t res;
    
    /* set div */
    res = em4095_set_div(&gs_handle, clock_div);
    if (res != 0)
    {
        return 1;
    }
    
    return 0;
}

uint8_t em4095_basic_read(uint8_t *buf, uint16_t len)
{
    uint8_t res;
    uint16_t l;
    uint32_t timeout;
 
    /* init 0 */
    gs_flag = 0;
 
    /* read */
    res = em4095_read(&gs_handle, len);
    if (res != 0)
    {
        return 1;
    }
 
    /* power on */
    res = em4095_power_on(&gs_handle);
    if (res != 0)
    {
        return 1;
    }
 
    /* set timeout 5s */
    timeout = 500;
 
    /* check timeout */
    while (timeout != 0)
    {
        /* check the flag */
        if (gs_flag != 0)
        {
            break;
        }
 
        /* timeout -- */
        timeout--;
 
        /* delay 10ms */
        em4095_interface_delay_ms(10);
    }
 
    /* check the timeout */
    if (timeout == 0)
    {
        return 1;
    }
 
    /* copy to buffer */
    res = em4095_copy_decode_buffer(&gs_handle, buf, &l);
    if (res != 0)
    {
        return 1;
    }
 
    /* check length */
    if (l != len)
    {
        return 1;
    }
 
    return 0;
}

uint8_t em4095_basic_write(uint8_t *buf, uint16_t len)
{
    uint8_t res;
    uint32_t timeout;
 
    /* init 0 */
    gs_flag = 0;
 
    /* write */
    res = em4095_write(&gs_handle, buf, len);
    if (res != 0)
    {
        return 1;
    }
 
    /* power on */
    res = em4095_power_on(&gs_handle);
    if (res != 0)
    {
        return 1;
    }
 
    /* set timeout 5s */
    timeout = 500;
 
    /* check timeout */
    while (timeout != 0)
    {
        /* check the flag */
        if (gs_flag != 0)
        {
            break;
        }
 
        /* timeout -- */
        timeout--;
 
        /* delay 10ms */
        em4095_interface_delay_ms(10);
    }
 
    /* check the timeout */
    if (timeout == 0)
    {
        return 1;
    }
 
    return 0;
}

uint8_t em4095_basic_deinit(void)
{
    if (em4095_deinit(&gs_handle) != 0)
    {
        return 1;
    }
    gs_callback = NULL;
 
    return 0;
}