/*!
    \file    mcu_config.c
    \brief   MCU type detection and dynamic configuration
    
    \version 2025-08-20, V1.0.0, MCU detection for GD32E23x
*/

#include "gd32e23x.h"
#include "board_config.h"

#define FLASH_SIZE_ADDR   (*(const uint16_t *)0x1FFFF7E0)

/* Global variables for dynamic configuration */
uint8_t g_mcu_type = 0;
usart_config_t g_usart_config = {0};

/*!
    \brief      detect MCU type and configure USART accordingly
    \param[in]  none
    \param[out] none
    \retval     none
*/
void mcu_detect_and_config(void)
{
    uint16_t flash_kb = FLASH_SIZE_ADDR;
    uint8_t size = (flash_kb >> 8) & 0xFF;
    
    /* Detect MCU type based on flash size */
    switch (size) {
        case GD32E23XF4:
            g_mcu_type = GD32E23XF4;
            /* Configure for USART0 (GD32E23XF4) */
            g_usart_config.rcu_usart = RCU_USART0;
            g_usart_config.usart_periph = USART0;
            g_usart_config.gpio_af = GPIO_AF_1;
            g_usart_config.irq_type = USART0_IRQn;
            break;
            
        case GD32E23XF6:
            g_mcu_type = GD32E23XF6;
            /* Configure for USART1 (GD32E23XF6) */
            g_usart_config.rcu_usart = RCU_USART1;
            g_usart_config.usart_periph = USART1;
            g_usart_config.gpio_af = GPIO_AF_1;
            g_usart_config.irq_type = USART1_IRQn;
            break;
            
        case GD32E23XF8:
            g_mcu_type = GD32E23XF8;
            /* Configure for USART1 (GD32E23XF8) */
            g_usart_config.rcu_usart = RCU_USART1;
            g_usart_config.usart_periph = USART1;
            g_usart_config.gpio_af = GPIO_AF_1;
            g_usart_config.irq_type = USART1_IRQn;
            break;
            
        default:
            /* Default to GD32E23XF8 configuration */
            g_mcu_type = GD32E23XF8;
            g_usart_config.rcu_usart = RCU_USART1;
            g_usart_config.usart_periph = USART1;
            g_usart_config.gpio_af = GPIO_AF_1;
            g_usart_config.irq_type = USART1_IRQn;
            break;
    }
}

/*!
    \brief      get current MCU type
    \param[in]  none
    \param[out] none
    \retval     MCU type (GD32E23XF4, GD32E23XF6, or GD32E23XF8)
*/
uint8_t get_mcu_type(void)
{
    return g_mcu_type;
}