/**
 * @file test_adc.c
 * @brief Hardware tests for ADC
 */

#include "unity.h"
#include "kernel.h"
#include "adc_driver.h"
#include "board.h"

/* Setup */
void setUp(void) {
    kernel_init();
    board_init();
}

/* Teardown */
void tearDown(void) {
    kernel_stop();
}

/* ============================================================================
 * Test Cases
 * ============================================================================ */

/**
 * @brief Test ADC initialization
 */
void test_adc_init(void) {
    AdcConfig_t config = {
        .resolution = ADC_RESOLUTION_12BIT,
        .mode = ADC_MODE_SINGLE,
        .trigger_source = ADC_TRIGGER_SOFTWARE,
        .reference = ADC_REFERENCE_VDD,
        .enable_dma = false,
        .conversion_frequency = 1000,
        .channel_count = 1,
        .channels = {
            {.channel = 0, .sampling_time = ADC_SAMPLING_28_5_CYCLES}
        }
    };

    TEST_ASSERT_EQUAL(KERNEL_OK, adc_init(0, &config));
}

/**
 * @brief Test ADC conversion
 */
void test_adc_conversion(void) {
    uint16_t value = 0;

    TEST_ASSERT_EQUAL(KERNEL_OK, adc_read_channel(0, 0, &value, 1000));
    TEST_ASSERT_GREATER_OR_EQUAL(0, value);
    TEST_ASSERT_LESS_OR_EQUAL(4095, value);  /* 12-bit resolution */
}

/**
 * @brief Test ADC voltage conversion
 */
void test_adc_voltage_conversion(void) {
    /* Test voltage conversion */
    float voltage = adc_convert_to_voltage(2048, ADC_RESOLUTION_12BIT, 3.3f);
    TEST_ASSERT_FLOAT_WITHIN(0.1f, 1.65f, voltage);
}

/* ============================================================================
 * Test Runner
 * ============================================================================ */
int main(void) {
    UNITY_BEGIN();

    RUN_TEST(test_adc_init);
    RUN_TEST(test_adc_conversion);
    RUN_TEST(test_adc_voltage_conversion);

    return UNITY_END();
}