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 *    used to endorse or promote products derived from this software
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/**
 * @file parameters.cpp
 *
 * @author Beat Kueng <beat-kueng@gmx.net>
 */

#include "parameters.h"

#include <px4_log.h>

namespace battery_status
{

void initialize_parameter_handles(ParameterHandles &parameter_handles)
{
	parameter_handles.battery_voltage_scaling = param_find("BAT_CNT_V_VOLT");
	parameter_handles.battery_current_scaling = param_find("BAT_CNT_V_CURR");
	parameter_handles.battery_current_offset = param_find("BAT_V_OFFS_CURR");
	parameter_handles.battery_v_div = param_find("BAT_V_DIV");
	parameter_handles.battery_a_per_v = param_find("BAT_A_PER_V");
	parameter_handles.battery_source = param_find("BAT_SOURCE");
	parameter_handles.battery_adc_channel = param_find("BAT_ADC_CHANNEL");
}

int update_parameters(const ParameterHandles &parameter_handles, Parameters &parameters)
{
	int ret = PX4_OK;

	const char *paramerr = "FAIL PARM LOAD";

	/* scaling of ADC ticks to battery voltage */
	if (param_get(parameter_handles.battery_voltage_scaling, &(parameters.battery_voltage_scaling)) != OK) {
		PX4_WARN("%s", paramerr);

	} else if (parameters.battery_voltage_scaling < 0.0f) {
		/* apply scaling according to defaults if set to default */
		parameters.battery_voltage_scaling = (3.3f / 4096);
		param_set_no_notification(parameter_handles.battery_voltage_scaling, &parameters.battery_voltage_scaling);
	}

	/* scaling of ADC ticks to battery current */
	if (param_get(parameter_handles.battery_current_scaling, &(parameters.battery_current_scaling)) != OK) {
		PX4_WARN("%s", paramerr);

	} else if (parameters.battery_current_scaling < 0.0f) {
		/* apply scaling according to defaults if set to default */
		parameters.battery_current_scaling = (3.3f / 4096);
		param_set_no_notification(parameter_handles.battery_current_scaling, &parameters.battery_current_scaling);
	}

	if (param_get(parameter_handles.battery_current_offset, &(parameters.battery_current_offset)) != OK) {
		PX4_WARN("%s", paramerr);

	}

	if (param_get(parameter_handles.battery_v_div, &(parameters.battery_v_div)) != OK) {
		PX4_WARN("%s", paramerr);
		parameters.battery_v_div = 0.0f;

	} else if (parameters.battery_v_div <= 0.0f) {
		/* apply scaling according to defaults if set to default */

		parameters.battery_v_div = BOARD_BATTERY1_V_DIV;
		param_set_no_notification(parameter_handles.battery_v_div, &parameters.battery_v_div);
	}

	if (param_get(parameter_handles.battery_a_per_v, &(parameters.battery_a_per_v)) != OK) {
		PX4_WARN("%s", paramerr);
		parameters.battery_a_per_v = 0.0f;

	} else if (parameters.battery_a_per_v <= 0.0f) {
		/* apply scaling according to defaults if set to default */

		parameters.battery_a_per_v = BOARD_BATTERY1_A_PER_V;
		param_set_no_notification(parameter_handles.battery_a_per_v, &parameters.battery_a_per_v);
	}

	param_get(parameter_handles.battery_source,      &(parameters.battery_source));
	param_get(parameter_handles.battery_adc_channel, &(parameters.battery_adc_channel));

	return ret;
}

} /* namespace battery_status */