driver_ads1115_interrupt.c

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#include "driver_ads1115_interrupt.h"
 
static ads1115_handle_t gs_handle;        

uint8_t ads1115_interrupt_init(ads1115_address_t addr, ads1115_channel_t channel, ads1115_compare_t compare, 
                               float f_high_threshold, float f_low_threshold)
{
    uint8_t res;
    int16_t high_threshold;
    int16_t low_threshold;
    
    /* link interface function */
    DRIVER_ADS1115_LINK_INIT(&gs_handle, ads1115_handle_t); 
    DRIVER_ADS1115_LINK_IIC_INIT(&gs_handle, ads1115_interface_iic_init);
    DRIVER_ADS1115_LINK_IIC_DEINIT(&gs_handle, ads1115_interface_iic_deinit);
    DRIVER_ADS1115_LINK_IIC_READ(&gs_handle, ads1115_interface_iic_read);
    DRIVER_ADS1115_LINK_IIC_WRITE(&gs_handle, ads1115_interface_iic_write);
    DRIVER_ADS1115_LINK_DELAY_MS(&gs_handle, ads1115_interface_delay_ms);
    DRIVER_ADS1115_LINK_DEBUG_PRINT(&gs_handle, ads1115_interface_debug_print);
    
    /* set addr pin */
    res = ads1115_set_addr_pin(&gs_handle, addr);
    if (res != 0)
    {
        ads1115_interface_debug_print("ads1115: set addr failed.\n");
        
        return 1;
    }
    
    /* ads1115 init */
    res = ads1115_init(&gs_handle);
    if (res != 0)
    {
        ads1115_interface_debug_print("ads1115: init failed.\n");
        
        return 1;
    }
    
    /* set channel */
    res = ads1115_set_channel(&gs_handle, channel);
    if (res != 0)
    {
        ads1115_interface_debug_print("ads1115: set channel failed.\n");
        (void)ads1115_deinit(&gs_handle);
        
        return 1;
    }
    
    /* set default range */
    res = ads1115_set_range(&gs_handle, ADS1115_INTERRUPT_DEFAULT_RANGE);
    if (res != 0)
    {
        ads1115_interface_debug_print("ads1115: set range failed.\n");
        (void)ads1115_deinit(&gs_handle);
        
        return 1;
    }
    
    /* set default alert pin */
    res = ads1115_set_alert_pin(&gs_handle, ADS1115_INTERRUPT_DEFAULT_ALERT_PIN);
    if (res != 0)
    {
        ads1115_interface_debug_print("ads1115: set alert pin failed.\n");
        (void)ads1115_deinit(&gs_handle);
        
        return 1;
    }
    
    /* set default compare mode */
    res = ads1115_set_compare_mode(&gs_handle, compare);
    if (res != 0)
    {
        ads1115_interface_debug_print("ads1115: set compare mode failed.\n");
        (void)ads1115_deinit(&gs_handle);
        
        return 1;
    }
    
    /* set default rate */
    res = ads1115_set_rate(&gs_handle, ADS1115_INTERRUPT_DEFAULT_RATE);
    if (res != 0)
    {
        ads1115_interface_debug_print("ads1115: set rate failed.\n");
        (void)ads1115_deinit(&gs_handle);
        
        return 1;
    }
    
    /* set default comparator queue */
    res = ads1115_set_comparator_queue(&gs_handle, ADS1115_INTERRUPT_DEFAULT_COMPARATOR_QUEUE);
    if (res != 0)
    {
        ads1115_interface_debug_print("ads1115: set comparator queue failed.\n");
        (void)ads1115_deinit(&gs_handle);
        
        return 1;
    }
    
    /* enable compare */
    res = ads1115_set_compare(&gs_handle, ADS1115_BOOL_TRUE);
    if (res != 0)
    {
        ads1115_interface_debug_print("ads1115: set compare failed.\n");
        (void)ads1115_deinit(&gs_handle);
        
        return 1;
    }
    
    /* convert to register */
    res = ads1115_convert_to_register(&gs_handle, f_high_threshold, (int16_t *)&high_threshold);
    if (res != 0)
    {
        ads1115_interface_debug_print("ads1115: convert to high threshold register failed.\n");
        (void)ads1115_deinit(&gs_handle);
        
        return 1;
    }
    
    /* convert to register */
    res = ads1115_convert_to_register(&gs_handle, f_low_threshold, (int16_t *)&low_threshold);
    if (res != 0)
    {
        ads1115_interface_debug_print("ads1115: convert to low threshold register failed.\n");
        (void)ads1115_deinit(&gs_handle);
        
        return 1;
    }
    
    /* set compare threshold */
    res = ads1115_set_compare_threshold(&gs_handle, high_threshold, low_threshold);
    if (res != 0)
    {
        ads1115_interface_debug_print("ads1115: set compare threshold failed.\n");
        (void)ads1115_deinit(&gs_handle);
        
        return 1;
    }
    
    /* start continuous read */
    res = ads1115_start_continuous_read(&gs_handle);
    if (res != 0)
    {
        ads1115_interface_debug_print("ads1115: start continues read mode failed.\n");
        (void)ads1115_deinit(&gs_handle);
        
        return 1;
    }
 
    return 0;
}

uint8_t ads1115_interrupt_read(float *s)
{
    int16_t raw;
  
    /* read data */
    if (ads1115_continuous_read(&gs_handle, (int16_t *)&raw, s) != 0)
    {
        return 1;
    }
    else
    {
        return 0;
    }
}

uint8_t ads1115_interrupt_deinit(void)
{
    uint8_t res;
    
    /* stop continuous read */
    res = ads1115_stop_continuous_read(&gs_handle);
    if (res != 0)
    {
        return 1;
    }
    
    /* deinit ads1115 */
    res = ads1115_deinit(&gs_handle);
    if (res != 0)
    {
        return 1;
    }
    
    return 0;
}