#ifndef DMA_HPP
#define DMA_HPP

#include "global_variable.h"
#include "reg_dma.h"
#include "reg_gpdma_gen.h"
#include "reg_nvic.h"
#include "reg_rcc.h"
#include "stm32u575xx.h"

#define LINK_LIST_SIZE 32

// 65kb * 32 = 2MB, the max size of link list is 2MB

class Dma {
  private:
    DMA_TypeDef *dma = nullptr;
    DMA_Channel_TypeDef *dma_channel = nullptr;
    reg_gpdma_ch_t *reg_ch = nullptr;
    reg_gpdma_t *reg_dma = nullptr;
    list_node_s link_list_p[LINK_LIST_SIZE] = {0};
    bool initialized = false;
    uint32_t (*user_tc_cb)() = nullptr;
    uint32_t (*user_err_cb)() = nullptr;

  public:
    Dma(DMA_TypeDef *_dma, DMA_Channel_TypeDef *_dma_channel);

    hal_status_e start(uint32_t src, uint32_t dst, uint32_t size, uint32_t (*tc_cb)() = nullptr,
                       uint32_t (*err_cb)() = nullptr);
    hal_status_e init(uint8_t request_source, dma_data_width_e src_width,
                      dma_data_width_e dst_width, ll_state_e src_inc, ll_state_e dst_inc,
                      dma_type_e src_type, dma_type_e dst_type, uint32_t max_transfer_size);
    hal_status_e stop();
    hal_status_e reset();
    void interrupt();
    uint32_t get_dst_addr();
};

#endif