driver_pcf8591_increment.c

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#include "driver_pcf8591_increment.h"
 
static pcf8591_handle_t gs_handle;        

uint8_t pcf8591_increment_init(pcf8591_address_t addr, pcf8591_mode_t mode)
{
    uint8_t res;
 
    /* link functions */
    DRIVER_PCF8591_LINK_INIT(&gs_handle, pcf8591_handle_t);
    DRIVER_PCF8591_LINK_IIC_INIT(&gs_handle, pcf8591_interface_iic_init);
    DRIVER_PCF8591_LINK_IIC_DEINIT(&gs_handle, pcf8591_interface_iic_deinit);
    DRIVER_PCF8591_LINK_IIC_READ_COMMAND(&gs_handle, pcf8591_interface_iic_read_cmd);
    DRIVER_PCF8591_LINK_IIC_WRITE_COMMAND(&gs_handle, pcf8591_interface_iic_write_cmd);
    DRIVER_PCF8591_LINK_DELAY_MS(&gs_handle, pcf8591_interface_delay_ms);
    DRIVER_PCF8591_LINK_DEBUG_PRINT(&gs_handle, pcf8591_interface_debug_print);
    
    /* set addr pin */
    res = pcf8591_set_addr_pin(&gs_handle, addr);
    if (res != 0)
    {
        pcf8591_interface_debug_print("pcf8591: set addr pin failed.\n");
        
        return 1;
    }
    
    /* pcf8591 init */
    res = pcf8591_init(&gs_handle);
    if (res != 0)
    {
        pcf8591_interface_debug_print("pcf8591: init failed.\n");
        
        return 1;
    }
    
    /* set mode */
    res = pcf8591_set_mode(&gs_handle, mode);
    if (res != 0)
    {
        pcf8591_interface_debug_print("pcf8591: set mode failed.\n");
        (void)pcf8591_deinit(&gs_handle);
        
        return 1;
    }
    
    /* enable auto increment */
    res = pcf8591_set_auto_increment(&gs_handle, PCF8591_BOOL_TRUE);
    if (res != 0)
    {
        pcf8591_interface_debug_print("pcf8591: set auto increment failed.\n");
        (void)pcf8591_deinit(&gs_handle);
        
        return 1;
    }
    
    /* set default reference voltage */
    res = pcf8591_set_reference_voltage(&gs_handle, PCF8591_INCREMENT_DEFAULT_REFERENCE_VOLTAGE);
    if (res != 0)
    {
        pcf8591_interface_debug_print("pcf8591: set reference voltage failed.\n");
        (void)pcf8591_deinit(&gs_handle);
        
        return 1;
    }
    
    return 0;
}

uint8_t pcf8591_increment_deinit(void)
{
    /* close pcf8591 */
    if (pcf8591_deinit(&gs_handle) != 0)
    {
        return 1;
    }
    else
    {
        return 0;
    }
}

uint8_t pcf8591_increment_read(int16_t *raw, float *adc, uint8_t *len)
{
    if (pcf8591_multiple_read(&gs_handle, raw, adc, len) != 0)
    {
        return 1;
    }
    else
    {
        return 0;
    }
}

uint8_t pcf8591_increment_write(float dac)
{
    uint8_t res;
    uint8_t data;
    
    /* convert to register data */
    res = pcf8591_dac_convert_to_register(&gs_handle, dac, (uint8_t *)&data);
    if (res != 0)
    {
        return 1;
    }
    
    /* write dac */
    if (pcf8591_write(&gs_handle, data) != 0)
    {
        return 1;
    }
    else
    {
        return 0;
    }
}