/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : bsp_adc.c
  * @brief          : bsp adc functions
  * @author         : TuxMonkey
  * @date           : 2025/11/22
  * @version        : v1.0
  ******************************************************************************
  * @attention      : Pay attention to enable the adc
  ******************************************************************************
  */
/* USER CODE END Header */

/* Includes ------------------------------------------------------------------*/
#include "bsp_adc.h"
#include "adc.h"
#include <stdbool.h>

/**
 * @brief ADC sampling voltage array
 */
__attribute__((section(".dma_buffer"), aligned(32))) volatile uint16_t ADC_Voltage_Val[BSP_ADC_CHANNEL_COUNT];

static bool bsp_adc_started = false;

/**
  * @brief  Configures the ADC.
  * @param  None
  * @retval None
  */
void BSP_ADC_Init(void)
{
    if (bsp_adc_started)
    {
        return;
    }

    (void) HAL_ADCEx_Calibration_Start(&hadc1, ADC_CALIB_OFFSET, ADC_SINGLE_ENDED);
    if (HAL_ADC_Start_DMA(&hadc1, (uint32_t *) ADC_Voltage_Val, BSP_ADC_CHANNEL_COUNT) == HAL_OK)
    {
        bsp_adc_started = true;
    }
}

//------------------------------------------------------------------------------

/**
  * @brief  USER get current voltage.
  * @param  None
  * @retval Voltage
  */
float USER_ADC_Voltage_Update(void)
{
    float voltage = ((float) ADC_Voltage_Val[BSP_ADC_BOARD_VOLTAGE_INDEX] * 3.3f / 65535.0f) * 11.0f;
    return voltage;
}

//------------------------------------------------------------------------------

uint16_t BSP_ADC_GetRaw(uint32_t index)
{
    if (index >= BSP_ADC_CHANNEL_COUNT)
    {
        return 0U;
    }

    return ADC_Voltage_Val[index];
}

uint16_t BSP_ADC_GetJoystickRaw(void)
{
    return BSP_ADC_GetRaw(BSP_ADC_JOYSTICK_INDEX);
}

uint16_t BSP_ADC_GetJoystickRaw12(void)
{
    return (uint16_t) (BSP_ADC_GetJoystickRaw() >> 4U);
}

float BSP_ADC_GetJoystickVoltage(void)
{
    return (float) BSP_ADC_GetJoystickRaw() * 3.3f / 65535.0f;
}