driver_hcsr04_basic.c

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#include "driver_hcsr04_basic.h"
 
static hcsr04_handle_t gs_handle;        

uint8_t hcsr04_basic_init(void)
{
    uint8_t res;
    
    /* link interface function */
    DRIVER_HCSR04_LINK_INIT(&gs_handle, hcsr04_handle_t);
    DRIVER_HCSR04_LINK_TRIG_INIT(&gs_handle, hcsr04_interface_trig_init);
    DRIVER_HCSR04_LINK_TRIG_DEINIT(&gs_handle, hcsr04_interface_trig_deinit);
    DRIVER_HCSR04_LINK_TRIG_WRITE(&gs_handle, hcsr04_interface_trig_write);
    DRIVER_HCSR04_LINK_ECHO_INIT(&gs_handle, hcsr04_interface_echo_init);
    DRIVER_HCSR04_LINK_ECHO_DEINIT(&gs_handle, hcsr04_interface_echo_deinit);
    DRIVER_HCSR04_LINK_ECHO_WRITE(&gs_handle, hcsr04_interface_echo_read);
    DRIVER_HCSR04_LINK_TIMESTAMP_READ(&gs_handle, hcsr04_interface_timestamp_read);
    DRIVER_HCSR04_LINK_DELAY_MS(&gs_handle, hcsr04_interface_delay_ms);
    DRIVER_HCSR04_LINK_DELAY_US(&gs_handle, hcsr04_interface_delay_us);
    DRIVER_HCSR04_LINK_DEBUG_PRINT(&gs_handle, hcsr04_interface_debug_print);
    
    /* hcsr04 init */
    res = hcsr04_init(&gs_handle);
    if (res != 0)
    {
        hcsr04_interface_debug_print("hcsr04: init failed.\n");
       
        return 1;
    }
 
    return 0;
}

uint8_t hcsr04_basic_read(float *m)
{
    uint32_t time_us;
    
    /* read distance */
    if (hcsr04_read(&gs_handle, (uint32_t *)&time_us, m) != 0)
    {
        return 1;
    }
    else
    {
        return 0;
    }
}

uint8_t hcsr04_basic_deinit(void)
{
    /* close hcsr04 */
    if (hcsr04_deinit(&gs_handle) != 0)
    {
        return 1;
    }
    else
    {
        return 0;
    }
}